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Cargo stuck for hours, taking 100% of the CPU #4604

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paulrouget opened this issue Oct 10, 2017 · 24 comments · Fixed by #4919
Closed

Cargo stuck for hours, taking 100% of the CPU #4604

paulrouget opened this issue Oct 10, 2017 · 24 comments · Fixed by #4919
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@paulrouget
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While working on Servo, on a regular basis, Cargo gets stuck on Updating git repository or Updating registry.

I usually have to wait few hours until it finishes. Sometimes with no error (compilation went through). Sometimes with an error (conflict of version with a dependency in my Cargo.toml and Servo's Cargo.toml).

I guess #4502 is related.

Is there anything I can do to help diagnose this problem?

@paulrouget
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I don't know if it's easily reproducible, but cargo check freeze with this: https://github.com/paulrouget/cargo-issue-4604

@paulrouget
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paulrouget commented Oct 10, 2017

By freeze, I mean, get stuck on Updating git repository https://github.com/servo/servo.

@paulrouget
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After few hours (I think 3 or 4 hours), this is what the Cargo.lock looks like: https://gist.github.com/paulrouget/385dd3d86028c698c98776d8d198e61a

The difference is the move from a local checkout of servo, webrender and webrender_api to the github repo.

@alexcrichton
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This is likely an unfortunate instance of #4066, although I'd have to dig in to be sure

@paulrouget
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This is likely an unfortunate instance of #4066, although I'd have to dig in to be sure

In this issue, you say:

We should have a hard limit for the number of steps the resolution algorithm can take before it just hard aborts and exits saying "this probably isn't gonna work".

But in this case, it works. But it takes 4 hours.

@paulrouget
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Is there any workaround?

Because every time I need to update servo in my projects, I have to run Cargo for hours before being able to do anything.

@alexcrichton
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I don't think I understand what's going on enough to recommend a workaround or know how to fix it. If it's not #4066 then Cargo may just need a tweak to a heuristic or something like that. I do not have time to investigate right now, but I can try to get around to this soon.

@aturon aturon self-assigned this Oct 16, 2017
@carols10cents
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Could this be a slow libgit operation? That is, #4261 ?

@paulrouget
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I tried to reproduce today with: #4604 (comment)

But suddenly it's fast.

What changed since last week:

  • I have a faster connection
  • maybe the content of ~/.cargo/

@paulrouget
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This is still happening.

Stuck on:

    Updating git repository `https://github.com/servo/servo`
DEBUG:cargo::sources::git::utils: skipping gc as there's only 35 pack files
DEBUG:cargo::sources::git::utils: doing a fetch for https://github.com/servo/servo
DEBUG:cargo::sources::git::utils: initiating fetch of refs/heads/*:refs/heads/* from https://github.com/servo/servo
INFO:cargo::sources::git::utils: fetch /Users/paul/.cargo/git/checkouts/servo-12bfca331f128de3/43a4f01/.git/
DEBUG:cargo::sources::git::utils: skipping gc as there's only 3 pack files
DEBUG:cargo::sources::git::utils: doing a fetch for file:///Users/paul/.cargo/git/db/servo-12bfca331f128de3
DEBUG:cargo::sources::git::utils: initiating fetch of refs/heads/*:refs/heads/* from file:///Users/paul/.cargo/git/db/servo-12bfca331f128de3

@paulrouget
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Would it be possible to work around the issue by pulling manually?

I checkout-ed commit #43a4f01 in /Users/paul/.cargo/git/checkouts/servo-12bfca331f128de3/43a4f01/ - but still, it gets stuck exactly the same way.

@paulrouget
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I attached lldb to the process and dumped the backtrace:

https://gist.github.com/paulrouget/d6e3d62c5fd03af96b3338cf9414335d

@alexcrichton
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@paulrouget it looks like it's stuck in libgit2 fetching? If that's the case I'm not sure how to debug... You could try out #4646 locally and perhaps see if progress is being made?

@paulrouget
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it looks like it's stuck in libgit2 fetching? If that's the case I'm not sure how to debug... You could try out #4646 locally and perhaps see if progress is being made?

Now this has landed, I see that it's progressing, but very very slowly. It's apparently stagnating at 1 minute per percent. The network monitor tells me it's downloading at 2 to 7 kb/s.

@paulrouget
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I can slow down a lot more. At the moment, it's around 7 minutes per percent.

@paulrouget
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paulrouget commented Nov 20, 2017

Cargo runs at 100% CPU:

Sampling process 69849 for 3 seconds with 1 millisecond of run time between samples
Sampling completed, processing symbols...
Analysis of sampling cargo (pid 69849) every 1 millisecond
Process:         cargo [69849]
Path:            /Users/paul/.rustup/toolchains/nightly-2017-11-14-x86_64-apple-darwin/bin/cargo
Load Address:    0x1045db000
Identifier:      cargo
Version:         ???
Code Type:       X86-64
Parent Process:  zsh [56467]

Date/Time:       2017-11-20 09:40:10.881 +0100
Launch Time:     2017-11-20 09:06:51.981 +0100
OS Version:      Mac OS X 10.13.1 (17B48)
Report Version:  7
Analysis Tool:   /usr/bin/sample
----

Call graph:
    762 Thread_9195248   DispatchQueue_1: com.apple.main-thread  (serial)
    + 762 start  (in cargo) + 52  [0x1045dc534]
    +   762 std::rt::lang_start::hd17fc511099cc2be  (in cargo) + 473  [0x104c25359]
    +     762 __rust_maybe_catch_panic  (in cargo) + 31  [0x104c2ffaf]
    +       762 cargo::main::h00ac1893a40041f5 (.llvm.DDAB090)  (in cargo) + 626  [0x1045e63c2]
    +         762 cargo::call_main_without_stdin::h51bc164e5c018f18 (.llvm.DDAB090)  (in cargo) + 1201  [0x1045e6011]
    +           762 cargo::execute::hcadd50a5b690d4d1 (.llvm.DDAB090)  (in cargo) + 3534  [0x1045e73fe]
    +             762 cargo::try_execute_builtin_command::ha0cdea16837d876b (.llvm.DDAB090)  (in cargo) + 2795  [0x1045e9a9b]
    +               762 cargo::build::execute::h288c61376d08943c  (in cargo) + 2720  [0x1046680e0]
    +                 762 cargo::ops::cargo_compile::compile::h0e04118861fdfead  (in cargo) + 94  [0x1046bd16e]
    +                   762 cargo::ops::cargo_compile::compile_with_exec::h48102a75b25fa388  (in cargo) + 489  [0x1046bd399]
    +                     762 cargo::ops::cargo_compile::compile_ws::h362183f616478b73  (in cargo) + 1451  [0x1046bdb2b]
    +                       762 cargo::ops::resolve::resolve_ws_precisely::ha3147c4e1cae3ce9  (in cargo) + 306  [0x1048443b2]
    +                         762 cargo::ops::resolve::resolve_with_registry::hbd27a06b4a3aeeb1 (.llvm.8BFD5AB8)  (in cargo) + 185  [0x104845359]
    +                           762 cargo::ops::resolve::resolve_with_previous::h2a3063e187f8279d  (in cargo) + 2928  [0x104846000]
    +                             762 cargo::core::resolver::resolve::hb9241e575e3f330c  (in cargo) + 663  [0x104915087]
    +                               762 cargo::core::resolver::activate_deps_loop::h1c9b917e633f691e (.llvm.49F80D0A)  (in cargo) + 424  [0x1049197f8]
    +                                 762 cargo::core::resolver::activate::h9b54c9e97ea90d66 (.llvm.49F80D0A)  (in cargo) + 6573  [0x104917e6d]
    +                                   762 _$LT$alloc..vec..Vec$LT$T$GT$$u20$as$u20$alloc..vec..SpecExtend$LT$T$C$$u20$I$GT$$GT$::from_iter::ha7d3762405001311  (in cargo) + 260  [0x104801114]
    +                                     762 _$LT$$RF$$u27$a$u20$mut$u20$I$u20$as$u20$core..iter..iterator..Iterator$GT$::next::h0603f0c9e06f8681  (in cargo) + 157  [0x104943edd]
    +                                       762 core::ops::function::impls::_$LT$impl$u20$core..ops..function..FnOnce$LT$A$GT$$u20$for$u20$$RF$$u27$a$u20$mut$u20$F$GT$::call_once::h9a71a3d2e726f15a  (in cargo) + 178  [0x1048fd3b2]
    +                                         762 _$LT$cargo..core..registry..PackageRegistry$LT$$u27$cfg$GT$$u20$as$u20$cargo..core..registry..Registry$GT$::query::h58422b1647f378eb  (in cargo) + 986  [0x10475329a]
    +                                           762 cargo::core::registry::PackageRegistry::ensure_loaded::h58281be0daa82731 (.llvm.F4F82D07)  (in cargo) + 1073  [0x1047520f1]
    +                                             762 _$LT$cargo..sources..git..source..GitSource$LT$$u27$cfg$GT$$u20$as$u20$cargo..core..source..Source$GT$::update::h5a3668887b7bbe3d  (in cargo) + 2982  [0x10475d0d6]
    +                                               762 cargo::sources::git::utils::GitDatabase::copy_to::h403aebadb5a2e85a  (in cargo) + 1030  [0x104710bf6]
    +                                                 762 cargo::sources::git::utils::GitCheckout::fetch::hdfce2914df6f34c0 (.llvm.6EB81EBA)  (in cargo) + 351  [0x10471248f]
    +                                                   762 cargo::sources::git::utils::fetch::hca35fce51a94b5c9  (in cargo) + 4874  [0x10471593a]
    +                                                     762 cargo::sources::git::utils::fetch::_$u7b$$u7b$closure$u7d$$u7d$::ha4206e8f05580b27 (.llvm.6EB81EBA)  (in cargo) + 762  [0x10471820a]
    +                                                       762 cargo::util::network::with_retry::hb11a8d90dff3afbd  (in cargo) + 477  [0x10484b21d]
    +                                                         762 git2::remote::Remote::fetch::h21204a23dfef3975  (in cargo) + 651  [0x1049a66eb]
    +                                                           762 git_remote_fetch  (in cargo) + 196  [0x1049efac4]
    +                                                             762 git_remote_download  (in cargo) + 1170  [0x1049ef962]
    +                                                               762 local_download_pack  (in cargo) + 829  [0x104a046ed]
    +                                                                 762 write_pack  (in cargo) + 1079  [0x1049dee77]
    +                                                                   287 write_one  (in cargo) + 765  [0x1049e0a3d]
    +                                                                   ! 285 git_indexer_append  (in cargo) + 561  [0x1049d0221]
    +                                                                   ! : 285 git_mwindow_free_all  (in cargo) + 58  [0x1049d62ba]
    +                                                                   ! :   285 git_mwindow_free_all_locked  (in cargo) + 138  [0x1049d635a]
    +                                                                   ! :     285 p_munmap  (in cargo) + 19  [0x104a10a13]
    +                                                                   ! :       285 __munmap  (in libsystem_kernel.dylib) + 10  [0x7fff715e7bf2]
    +                                                                   ! 2 git_indexer_append  (in cargo) + 70  [0x1049d0036]
    +                                                                   !   2 append_to_pack  (in cargo) + 128  [0x1049d0a40]
    +                                                                   !     2 p_write  (in cargo) + 46  [0x1049e790e]
    +                                                                   !       2 write  (in libsystem_kernel.dylib) + 10  [0x7fff715e9b62]
    +                                                                   159 write_one  (in cargo) + 912  [0x1049e0ad0]
    +                                                                   ! 157 git_indexer_append  (in cargo) + 561  [0x1049d0221]
    +                                                                   ! : 157 git_mwindow_free_all  (in cargo) + 58  [0x1049d62ba]
    +                                                                   ! :   157 git_mwindow_free_all_locked  (in cargo) + 138  [0x1049d635a]
    +                                                                   ! :     157 p_munmap  (in cargo) + 19  [0x104a10a13]
    +                                                                   ! :       157 __munmap  (in libsystem_kernel.dylib) + 10  [0x7fff715e7bf2]
    +                                                                   ! 1 git_indexer_append  (in cargo) + 1072  [0x1049d0420]
    +                                                                   ! : 1 git_packfile_stream_read  (in cargo) + 155  [0x1049e21eb]
    +                                                                   ! :   1 git_mwindow_open  (in cargo) + 441  [0x1049d6539]
    +                                                                   ! :     1 p_mmap  (in cargo) + 61  [0x104a109bd]
    +                                                                   ! :       1 mmap  (in libsystem_kernel.dylib) + 92  [0x7fff715e389a]
    +                                                                   ! :         1 __mmap  (in libsystem_kernel.dylib) + 10  [0x7fff715e7b32]
    +                                                                   ! 1 git_indexer_append  (in cargo) + 1643  [0x1049d065b]
    +                                                                   !   1 git2::remote_callbacks::transfer_progress_cb::he07b0955c831f978 (.llvm.3E34B4F1)  (in cargo) + 49  [0x1049a0131]
    +                                                                   !     1 cargo::sources::git::utils::fetch::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::hc046d48fc0f2b9c2 (.llvm.E13DF95F)  (in cargo) + 62  [0x1047e5ade]
    +                                                                   !       1 cargo::util::progress::Progress::tick::h16581f53cee437bd  (in cargo) + 801  [0x10471f2d1]
    +                                                                   !         1 _$LT$alloc..raw_vec..RawVec$LT$T$C$$u20$A$GT$$GT$::reserve::hc84c6756c8a0e317  (in cargo) + 79  [0x1048dc15f]
    +                                                                   !           1 __rde_realloc  (in cargo) + 81  [0x104c301f1]
    +                                                                   !             1 je_rallocx  (in cargo) + 937  [0x104c33d89]
    +                                                                   !               1 je_arena_ralloc  (in cargo) + 832  [0x104c3d1d0]
    +                                                                   !                 1 _platform_memmove$VARIANT$Haswell  (in libsystem_platform.dylib) + 183  [0x7fff7171bfd7]
    +                                                                   157 write_one  (in cargo) + 835  [0x1049e0a83]
    +                                                                   ! 155 git_indexer_append  (in cargo) + 70  [0x1049d0036]
    +                                                                   ! : 151 append_to_pack  (in cargo) + 233  [0x1049d0aa9]
    +                                                                   ! : | 151 p_munmap  (in cargo) + 19  [0x104a10a13]
    +                                                                   ! : |   151 __munmap  (in libsystem_kernel.dylib) + 10  [0x7fff715e7bf2]
    +                                                                   ! : 4 append_to_pack  (in cargo) + 128  [0x1049d0a40]
    +                                                                   ! :   4 p_write  (in cargo) + 46  [0x1049e790e]
    +                                                                   ! :     4 write  (in libsystem_kernel.dylib) + 10  [0x7fff715e9b62]
    +                                                                   ! 1 git_indexer_append  (in cargo) + 117  [0x1049d0065]
    +                                                                   ! : 1 hash_partially  (in cargo) + 67  [0x1049d0b23]
    +                                                                   ! :   1 CC_SHA1_Update  (in libcommonCrypto.dylib) + 176  [0x7fff7133a8a0]
    +                                                                   ! 1 git_indexer_append  (in cargo) + 723  [0x1049d02c3]
    +                                                                   !   1 git_packfile_unpack_header  (in cargo) + 52  [0x1049e0e24]
    +                                                                   !     1 git_mwindow_open  (in cargo) + 441  [0x1049d6539]
    +                                                                   !       1 p_mmap  (in cargo) + 61  [0x104a109bd]
    +                                                                   !         1 mmap  (in libsystem_kernel.dylib) + 92  [0x7fff715e389a]
    +                                                                   !           1 __mmap  (in libsystem_kernel.dylib) + 10  [0x7fff715e7b32]
    +                                                                   144 write_one  (in cargo) + 1075  [0x1049e0b73]
    +                                                                   ! 140 git_indexer_append  (in cargo) + 70  [0x1049d0036]
    +                                                                   ! : 139 append_to_pack  (in cargo) + 233  [0x1049d0aa9]
    +                                                                   ! : | 139 p_munmap  (in cargo) + 19  [0x104a10a13]
    +                                                                   ! : |   139 __munmap  (in libsystem_kernel.dylib) + 10  [0x7fff715e7bf2]
    +                                                                   ! : 1 append_to_pack  (in cargo) + 128  [0x1049d0a40]
    +                                                                   ! :   1 p_write  (in cargo) + 46  [0x1049e790e]
    +                                                                   ! :     1 write  (in libsystem_kernel.dylib) + 10  [0x7fff715e9b62]
    +                                                                   ! 3 git_indexer_append  (in cargo) + 561  [0x1049d0221]
    +                                                                   ! : 3 git_mwindow_free_all  (in cargo) + 58  [0x1049d62ba]
    +                                                                   ! :   3 git_mwindow_free_all_locked  (in cargo) + 138  [0x1049d635a]
    +                                                                   ! :     3 p_munmap  (in cargo) + 19  [0x104a10a13]
    +                                                                   ! :       3 __munmap  (in libsystem_kernel.dylib) + 10  [0x7fff715e7bf2]
    +                                                                   ! 1 git_indexer_append  (in cargo) + 1643  [0x1049d065b]
    +                                                                   !   1 git2::remote_callbacks::transfer_progress_cb::he07b0955c831f978 (.llvm.3E34B4F1)  (in cargo) + 49  [0x1049a0131]
    +                                                                   !     1 cargo::sources::git::utils::fetch::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::hc046d48fc0f2b9c2 (.llvm.E13DF95F)  (in cargo) + 62  [0x1047e5ade]
    +                                                                   !       1 cargo::util::progress::Progress::tick::h16581f53cee437bd  (in cargo) + 1023  [0x10471f3af]
    +                                                                   !         1 cargo::core::shell::Shell::print::ha1b950463d43512e  (in cargo) + 105  [0x104730809]
    +                                                                   !           1 _$LT$termcolor..StandardStream$u20$as$u20$termcolor..WriteColor$GT$::reset::hcdc1cf6ce0452e54  (in cargo) + 39  [0x104a22b47]
    +                                                                   !             1 _$LT$termcolor..Ansi$LT$W$GT$$GT$::write_str::h9636618a3486e2e9 (.llvm.BBB77D41)  (in cargo) + 117  [0x104a22bd5]
    +                                                                   !               1 _$LT$std..io..stdio..Stderr$u20$as$u20$std..io..Write$GT$::write::h8e5a78b66d5b22b5  (in cargo) + 38  [0x104c129d6]
    +                                                                   14 write_one  (in cargo) + 106  [0x1049e07aa]
    +                                                                   ! 8 write_one  (in cargo) + 106  [0x1049e07aa]
    +                                                                   ! : 4 write_one  (in cargo) + 106  [0x1049e07aa]
    +                                                                   ! : | 2 write_one  (in cargo) + 912  [0x1049e0ad0]
    +                                                                   ! : | + 2 git_indexer_append  (in cargo) + 561  [0x1049d0221]
    +                                                                   ! : | +   2 git_mwindow_free_all  (in cargo) + 58  [0x1049d62ba]
    +                                                                   ! : | +     2 git_mwindow_free_all_locked  (in cargo) + 138  [0x1049d635a]
    +                                                                   ! : | +       2 p_munmap  (in cargo) + 19  [0x104a10a13]
    +                                                                   ! : | +         2 __munmap  (in libsystem_kernel.dylib) + 10  [0x7fff715e7bf2]
    +                                                                   ! : | 1 write_one  (in cargo) + 765  [0x1049e0a3d]
    +                                                                   ! : | + 1 git_indexer_append  (in cargo) + 561  [0x1049d0221]
    +                                                                   ! : | +   1 git_mwindow_free_all  (in cargo) + 58  [0x1049d62ba]
    +                                                                   ! : | +     1 git_mwindow_free_all_locked  (in cargo) + 138  [0x1049d635a]
    +                                                                   ! : | +       1 p_munmap  (in cargo) + 19  [0x104a10a13]
    +                                                                   ! : | +         1 __munmap  (in libsystem_kernel.dylib) + 10  [0x7fff715e7bf2]
    +                                                                   ! : | 1 write_one  (in cargo) + 835  [0x1049e0a83]
    +                                                                   ! : |   1 git_indexer_append  (in cargo) + 70  [0x1049d0036]
    +                                                                   ! : |     1 append_to_pack  (in cargo) + 233  [0x1049d0aa9]
    +                                                                   ! : |       1 p_munmap  (in cargo) + 19  [0x104a10a13]
    +                                                                   ! : |         1 __munmap  (in libsystem_kernel.dylib) + 10  [0x7fff715e7bf2]
    +                                                                   ! : 2 write_one  (in cargo) + 912  [0x1049e0ad0]
    +                                                                   ! : | 2 git_indexer_append  (in cargo) + 561  [0x1049d0221]
    +                                                                   ! : |   2 git_mwindow_free_all  (in cargo) + 58  [0x1049d62ba]
    +                                                                   ! : |     2 git_mwindow_free_all_locked  (in cargo) + 138  [0x1049d635a]
    +                                                                   ! : |       2 p_munmap  (in cargo) + 19  [0x104a10a13]
    +                                                                   ! : |         2 __munmap  (in libsystem_kernel.dylib) + 10  [0x7fff715e7bf2]
    +                                                                   ! : 1 write_one  (in cargo) + 765  [0x1049e0a3d]
    +                                                                   ! : | 1 git_indexer_append  (in cargo) + 561  [0x1049d0221]
    +                                                                   ! : |   1 git_mwindow_free_all  (in cargo) + 58  [0x1049d62ba]
    +                                                                   ! : |     1 git_mwindow_free_all_locked  (in cargo) + 138  [0x1049d635a]
    +                                                                   ! : |       1 p_munmap  (in cargo) + 19  [0x104a10a13]
    +                                                                   ! : |         1 __munmap  (in libsystem_kernel.dylib) + 10  [0x7fff715e7bf2]
    +                                                                   ! : 1 write_one  (in cargo) + 835  [0x1049e0a83]
    +                                                                   ! :   1 git_indexer_append  (in cargo) + 70  [0x1049d0036]
    +                                                                   ! :     1 append_to_pack  (in cargo) + 233  [0x1049d0aa9]
    +                                                                   ! :       1 p_munmap  (in cargo) + 19  [0x104a10a13]
    +                                                                   ! :         1 __munmap  (in libsystem_kernel.dylib) + 10  [0x7fff715e7bf2]
    +                                                                   ! 3 write_one  (in cargo) + 835  [0x1049e0a83]
    +                                                                   ! : 3 git_indexer_append  (in cargo) + 70  [0x1049d0036]
    +                                                                   ! :   3 append_to_pack  (in cargo) + 233  [0x1049d0aa9]
    +                                                                   ! :     3 p_munmap  (in cargo) + 19  [0x104a10a13]
    +                                                                   ! :       3 __munmap  (in libsystem_kernel.dylib) + 10  [0x7fff715e7bf2]
    +                                                                   ! 2 write_one  (in cargo) + 765  [0x1049e0a3d]
    +                                                                   ! : 2 git_indexer_append  (in cargo) + 561  [0x1049d0221]
    +                                                                   ! :   2 git_mwindow_free_all  (in cargo) + 58  [0x1049d62ba]
    +                                                                   ! :     2 git_mwindow_free_all_locked  (in cargo) + 138  [0x1049d635a]
    +                                                                   ! :       2 p_munmap  (in cargo) + 19  [0x104a10a13]
    +                                                                   ! :         2 __munmap  (in libsystem_kernel.dylib) + 10  [0x7fff715e7bf2]
    +                                                                   ! 1 write_one  (in cargo) + 912  [0x1049e0ad0]
    +                                                                   !   1 git_indexer_append  (in cargo) + 561  [0x1049d0221]
    +                                                                   !     1 git_mwindow_free_all  (in cargo) + 58  [0x1049d62ba]
    +                                                                   !       1 git_mwindow_free_all_locked  (in cargo) + 138  [0x1049d635a]
    +                                                                   !         1 p_munmap  (in cargo) + 19  [0x104a10a13]
    +                                                                   !           1 __munmap  (in libsystem_kernel.dylib) + 10  [0x7fff715e7bf2]
    +                                                                   1 write_one  (in cargo) + 810  [0x1049e0a6a]
    +                                                                     1 CC_SHA1_Update  (in libcommonCrypto.dylib) + 103  [0x7fff7133a857]
    +                                                                       1 _platform_memmove$VARIANT$Haswell  (in libsystem_platform.dylib) + 77  [0x7fff7171bf6d]
    762 Thread_9195306
      762 start_wqthread  (in libsystem_pthread.dylib) + 13  [0x7fff71721c4d]
        762 _pthread_wqthread  (in libsystem_pthread.dylib) + 1552  [0x7fff7172226f]
          762 __workq_kernreturn  (in libsystem_kernel.dylib) + 10  [0x7fff715e86da]

Total number in stack (recursive counted multiple, when >=5):
        14       __munmap  (in libsystem_kernel.dylib) + 0  [0x7fff715e7be8]
        14       p_munmap  (in cargo) + 19  [0x104a10a13]
        9       git_indexer_append  (in cargo) + 561  [0x1049d0221]
        9       git_mwindow_free_all  (in cargo) + 58  [0x1049d62ba]
        9       git_mwindow_free_all_locked  (in cargo) + 138  [0x1049d635a]
        6       git_indexer_append  (in cargo) + 70  [0x1049d0036]
        5       append_to_pack  (in cargo) + 233  [0x1049d0aa9]

Sort by top of stack, same collapsed (when >= 5):
        __workq_kernreturn  (in libsystem_kernel.dylib)        762
        __munmap  (in libsystem_kernel.dylib)        749
        write  (in libsystem_kernel.dylib)        7

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    0x7fff7171f000 -     0x7fff7172afff  libsystem_pthread.dylib (301.20.1) <8AF70211-A670-3CC7-AE24-EFE9F1C2B1E5> /usr/lib/system/libsystem_pthread.dylib
    0x7fff7172b000 -     0x7fff7172eff3  libsystem_sandbox.dylib (765.21.1) <FAC0DA75-892E-3161-9D6A-2F999D8519B6> /usr/lib/system/libsystem_sandbox.dylib
    0x7fff7172f000 -     0x7fff71730ff3  libsystem_secinit.dylib (30) <F06ADB8F-9E94-34A7-B3C9-2C22FDD14BAD> /usr/lib/system/libsystem_secinit.dylib
    0x7fff71731000 -     0x7fff71738ff7  libsystem_symptoms.dylib (820.20.3) <4439B818-4C84-30E9-91B5-B7766FA74650> /usr/lib/system/libsystem_symptoms.dylib
    0x7fff71739000 -     0x7fff7174cff7  libsystem_trace.dylib (829.20.1) <878582CE-0647-31DD-92C3-AFCD5C3A714D> /usr/lib/system/libsystem_trace.dylib
    0x7fff7174e000 -     0x7fff71753ff7  libunwind.dylib (35.3) <6D4FCD49-D2A9-3233-95C7-A7635CE265F2> /usr/lib/system/libunwind.dylib
    0x7fff71754000 -     0x7fff71780ff7  libxpc.dylib (1205.20.31) <58676E88-35FD-3CF3-99BB-2A82E09F8058> /usr/lib/system/libxpc.dylib
Sample analysis of process 69849 written to file /dev/stdout

@paulrouget
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paulrouget commented Nov 20, 2017

Most of time spent in this if I read the samples right:

> write_one
  > git_indexer_append
    > git_mwindow_free_all
      > git_mwindow_free_all_locked
        > p_munmap
          > __munmap

@alexcrichton
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Ok well at least we know it's stuck in libgit2! Do you know the URL of what it's cloning? If you can create a standalone program using just git2-rs that clones it will probably be sufficient for opening a bug against libgit2

@paulrouget
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Does Cargo use https://github.com/alexcrichton/git2-rs?

If so, cargo run --example fetch https://github.com/servo/servo.git works as expected.

@alexcrichton
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Yes Cargo uses git2-rs, but Cargo likely doesn't match the exact behavior of one of the examples, but rather something may need to be extracted from Cargo's source to match its patterns.

@paulrouget
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I reduced this problem to the most minimal test case I could. I think it might have to do with disk-to-disk operations. Not sure. See https://github.com/alexcrichton/git2-rs/issues/280

alexcrichton added a commit to alexcrichton/cargo that referenced this issue Jan 8, 2018
This commit updates the handling of git checkouts from the database to use
hardlinks if possible, speeding up this operation for large repositories
significantly.

As a refresher, Cargo caches git repositories in a few locations to speed up
local usage of git repositories. Cargo has a "database" folder which is a bare
checkout of any git repository Cargo has cached historically. This database
folder contains effectively a bunch of databases for remote repos that are
updated periodically.

When actually building a crate Cargo will clone this database into a different
location, the checkouts folder. Each rev we build (ever) is cached in the
checkouts folder. This means that once a checkout directory is created it's
frozen for all of time.

This latter step is what this commit is optimizing. When checking out the
database onto the local filesystem at a particular revision. Previously we were
instructing libgit2 to fall back to a "git aware" transport which was
exceedingly slow on some systems for filesystem-to-filesystem transfers. This
optimization (we just forgot to turn it on in libgit2) is a longstanding one and
should speed this up significantly!

Closes rust-lang#4604
bors added a commit that referenced this issue Jan 8, 2018
Leverage local links on git checkouts

This commit updates the handling of git checkouts from the database to use
hardlinks if possible, speeding up this operation for large repositories
significantly.

As a refresher, Cargo caches git repositories in a few locations to speed up
local usage of git repositories. Cargo has a "database" folder which is a bare
checkout of any git repository Cargo has cached historically. This database
folder contains effectively a bunch of databases for remote repos that are
updated periodically.

When actually building a crate Cargo will clone this database into a different
location, the checkouts folder. Each rev we build (ever) is cached in the
checkouts folder. This means that once a checkout directory is created it's
frozen for all of time.

This latter step is what this commit is optimizing. When checking out the
database onto the local filesystem at a particular revision. Previously we were
instructing libgit2 to fall back to a "git aware" transport which was
exceedingly slow on some systems for filesystem-to-filesystem transfers. This
optimization (we just forgot to turn it on in libgit2) is a longstanding one and
should speed this up significantly!

Closes #4604
@bors bors closed this as completed in #4919 Jan 8, 2018
@paulrouget
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Thank you so much! This is going to make my life better :)

@alexcrichton
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It'll take a bit to get this into nightlies btw, I've opened a PR at rust-lang/rust#47280 but it may take some time to land.

@shenshouer
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shenshouer commented Oct 30, 2018

The same issue with: cargo 1.31.0-nightly (ad6e5c003 2018-09-28) and rustc 1.31.0-nightly (2c2e2c57d 2018-10-12) on MacOSX 10.14 (18A391) when checkout git repository https://github.com/maps4print/azul

Sampling process 26026 for 3 seconds with 1 millisecond of run time between samples
Sampling completed, processing symbols...
Analysis of sampling cargo (pid 26026) every 1 millisecond
Process:         cargo [26026]
Path:            /Users/shenshouer/.rustup/toolchains/nightly-x86_64-apple-darwin/bin/cargo
Load Address:    0x102da9000
Identifier:      cargo
Version:         ???
Code Type:       X86-64
Parent Process:  clion [25877]

Date/Time:       2018-10-30 23:26:17.142 +0800
Launch Time:     2018-10-30 23:12:55.183 +0800
OS Version:      Mac OS X 10.14 (18A391)
Report Version:  7
Analysis Tool:   /usr/bin/sample

Physical footprint:         2800K
Physical footprint (peak):  2808K
----

Call graph:
    2578 Thread_1968217   DispatchQueue_1: com.apple.main-thread  (serial)
    + 2578 start  (in cargo) + 52  [0x102daa734]
    +   2578 main  (in cargo) + 44  [0x102df017c]
    +     2578 std::rt::lang_start_internal::h7e35fa7b4fe23cb1  (in cargo) + 237  [0x1034fd3ed]
    +       2578 __rust_maybe_catch_panic  (in cargo) + 31  [0x10351f52f]
    +         2578 std::panicking::try::do_call::h4a9f37ca731083ce (.llvm.2541341180027714544)  (in cargo) + 24  [0x103512358]
    +           2578 std::rt::lang_start::_$u7b$$u7b$closure$u7d$$u7d$::h60875f1a135358bf  (in cargo) + 6  [0x102de5896]
    +             2578 cargo::main::h6a4ec15b04c1213b  (in cargo) + 235  [0x102dedc5b]
    +               2578 cargo::cli::main::h936dfe017da4c9f4  (in cargo) + 5530  [0x102dbdaca]
    +                 2578 cargo::commands::metadata::exec::h4255d867d07bbdf2  (in cargo) + 899  [0x102db8943]
    +                   2578 cargo::ops::cargo_output_metadata::output_metadata::h4530285e00cd2c5d  (in cargo) + 1218  [0x102f62cf2]
    +                     2578 cargo::ops::resolve::resolve_ws_precisely::h59f93a8c5149688a  (in cargo) + 221  [0x10317200d]
    +                       2578 cargo::ops::resolve::resolve_ws_with_method::he0e28571e773042e  (in cargo) + 305  [0x103172191]
    +                         2578 cargo::ops::resolve::resolve_with_registry::hff9e30fccfc0283d  (in cargo) + 197  [0x103172ab5]
    +                           2578 cargo::ops::resolve::resolve_with_previous::h8226461f70f499b9  (in cargo) + 6574  [0x10317458e]
    +                             2578 cargo::core::resolver::resolve::hbfd2f7f630ab8d85  (in cargo) + 300  [0x10316475c]
    +                               2578 cargo::core::resolver::activate_deps_loop::h79c35fd152977c25  (in cargo) + 533  [0x103165875]
    +                                 2578 cargo::core::resolver::activate::hc38d720a4b0e0074  (in cargo) + 1069  [0x10316ca0d]
    +                                   2578 cargo::core::resolver::context::Context::build_deps::h2331a4aa7ffddb3d  (in cargo) + 6542  [0x102ef987e]
    +                                     2578 _$LT$alloc..vec..Vec$LT$T$GT$$u20$as$u20$alloc..vec..SpecExtend$LT$T$C$$u20$I$GT$$GT$::from_iter::h8a71e59afc5e3143  (in cargo) + 40  [0x1031425a8]
    +                                       2578 _$LT$$RF$mut$u20$I$u20$as$u20$core..iter..iterator..Iterator$GT$::next::h0942267ad17afe7e  (in cargo) + 132  [0x102f46624]
    +                                         2578 core::ops::function::impls::_$LT$impl$u20$core..ops..function..FnOnce$LT$A$GT$$u20$for$u20$$RF$mut$u20$F$GT$::call_once::hbad11779cba7e7a3  (in cargo) + 1662  [0x102ee351e]
    +                                           2578 _$LT$cargo..core..registry..PackageRegistry$LT$$u27$cfg$GT$$u20$as$u20$cargo..core..registry..Registry$GT$::query::h9a808ca0a8a1a1a3  (in cargo) + 1556  [0x103113cd4]
    +                                             2578 cargo::core::registry::PackageRegistry::ensure_loaded::h7d223efc04e80062 (.llvm.114276866467408042)  (in cargo) + 994  [0x103112672]
    +                                               2578 _$LT$cargo..sources..git..source..GitSource$LT$$u27$cfg$GT$$u20$as$u20$cargo..core..source..Source$GT$::update::hd45c70ca2c7484ca  (in cargo) + 2709  [0x102f6dda5]
    +                                                 2578 cargo::sources::git::utils::GitRemote::checkout::hf633a207cd238cc0  (in cargo) + 2250  [0x102e5c0ea]
    +                                                   2578 cargo::sources::git::utils::fetch::h3bcd43b92793a780  (in cargo) + 5384  [0x102e62758]
    +                                                     2578 cargo::sources::git::utils::with_fetch_options::h387ecd44695c621b  (in cargo) + 455  [0x102e60287]
    +                                                       2578 cargo::sources::git::utils::with_fetch_options::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h0d04c0ace637f18e  (in cargo) + 329  [0x102e611a9]
    +                                                         2578 cargo::sources::git::utils::fetch::_$u7b$$u7b$closure$u7d$$u7d$::h6a4456a0a50d8ff0  (in cargo) + 390  [0x102e63246]
    +                                                           2578 git2::remote::Remote::fetch::hfce0f4b758befd5b  (in cargo) + 593  [0x103275fb1]
    +                                                             2578 git_remote_fetch  (in cargo) + 167  [0x1032c4fd7]
    +                                                               2578 git_remote_connect  (in cargo) + 391  [0x1032c46f7]
    +                                                                 2578 git_smart__connect  (in cargo) + 294  [0x1032e3156]
    +                                                                   2578 git_smart__store_refs  (in cargo) + 178  [0x1032e4362]
    +                                                                     2578 git_smart__recv_cb  (in cargo) + 53  [0x1032e2b95]
    +                                                                       1770 http_stream_read  (in cargo) + 560  [0x1032e0d20]
    +                                                                       ! 1448 recv_stream  (in cargo) + 30  [0x1032aa86e]
    +                                                                       ! : 723 stransport_read  (in cargo) + 40  [0x1032e8508]
    +                                                                       ! : | 400 giterr_clear  (in cargo) + 11  [0x1032975eb]
    +                                                                       ! : | + 285 git__global_state  (in cargo) + 104,27,...  [0x10329c4c8,0x10329c47b,...]
    +                                                                       ! : | + 61 git__global_state  (in cargo) + 27  [0x10329c47b]
    +                                                                       ! : | + ! 61 pthread_getspecific  (in libsystem_pthread.dylib) + 0,9  [0x7fff7122d7c5,0x7fff7122d7ce]
    +                                                                       ! : | + 54 DYLD-STUB$$pthread_getspecific  (in cargo) + 0  [0x103557316]
    +                                                                       ! : | 184 giterr_clear  (in cargo) + 4,83,...  [0x1032975e4,0x103297633,...]
    +                                                                       ! : | 89 giterr_clear  (in cargo) + 88  [0x103297638]
    +                                                                       ! : | + 89 __error  (in libsystem_kernel.dylib) + 0,23,...  [0x7fff7117655d,0x7fff71176574,...]
    +                                                                       ! : | 50 DYLD-STUB$$__error  (in cargo) + 0  [0x103556f98]
    +                                                                       ! : 430 stransport_read  (in cargo) + 24  [0x1032e84f8]
    +                                                                       ! : | 430 SSLRead  (in Security) + 91,0,...  [0x7fff4fa23b74,0x7fff4fa23b19,...]
    +                                                                       ! : 252 stransport_read  (in cargo) + 35,4,...  [0x1032e8503,0x1032e84e4,...]
    +                                                                       ! : 43 DYLD-STUB$$SSLRead  (in cargo) + 0  [0x103556ee4]
    +                                                                       ! 271 recv_stream  (in cargo) + 6,21,...  [0x1032aa856,0x1032aa865,...]
    +                                                                       ! 51 gitno_recv  (in cargo) + 4  [0x1032aa7a4]
    +                                                                       407 http_stream_read  (in cargo) + 658  [0x1032e0d82]
    +                                                                       ! 407 http_parser_execute  (in cargo) + 12,20,...  [0x1032e86ec,0x1032e86f4,...]
    +                                                                       400 http_stream_read  (in cargo) + 677,574,...  [0x1032e0d95,0x1032e0d2e,...]
    +                                                                       1 gitno_recv  (in cargo) + 5  [0x1032aa7a5]
    2578 Thread_1968218
      2578 start_wqthread  (in libsystem_pthread.dylib) + 13  [0x7fff7122e415]
        2578 _pthread_wqthread  (in libsystem_pthread.dylib) + 446  [0x7fff7122e641]
          2578 __workq_kernreturn  (in libsystem_kernel.dylib) + 10  [0x7fff711775be]

Total number in stack (recursive counted multiple, when >=5):

Sort by top of stack, same collapsed (when >= 5):
        __workq_kernreturn  (in libsystem_kernel.dylib)        2578
        SSLRead  (in Security)        430
        http_parser_execute  (in cargo)        407
        http_stream_read  (in cargo)        400
        git__global_state  (in cargo)        285
        recv_stream  (in cargo)        271
        stransport_read  (in cargo)        252
        giterr_clear  (in cargo)        184
        __error  (in libsystem_kernel.dylib)        89
        pthread_getspecific  (in libsystem_pthread.dylib)        61
        DYLD-STUB$$pthread_getspecific  (in cargo)        54
        gitno_recv  (in cargo)        52
        DYLD-STUB$$__error  (in cargo)        50
        DYLD-STUB$$SSLRead  (in cargo)        43

Binary Images:
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       0x10e69f000 -        0x10e71d6a7  dyld (625.13) <D6387150-2FB8-3066-868D-72E1B1C43982> /usr/lib/dyld
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    0x7fff40958000 -     0x7fff40bcffd7  libBLAS.dylib (1243.200.4) <76710990-AE2B-300E-88BB-797ABAD74956> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
    0x7fff40bd0000 -     0x7fff40c42fe7  libBNNS.dylib (38.200.5) <5F3A4021-8FF8-30E8-B84A-AA2BD70F4151> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBNNS.dylib
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    0x7fff41000000 -     0x7fff41005ff3  libQuadrature.dylib (3.200.2) <6FFAC142-415D-3AF0-BC09-336302F11934> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libQuadrature.dylib
    0x7fff41006000 -     0x7fff41083ffb  libSparse.dylib (79.200.5) <0D7E71A4-10D2-3979-B386-D2426ADAF6D7> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libSparse.dylib
    0x7fff41084000 -     0x7fff41097ffb  libSparseBLAS.dylib (1243.200.4) <00D6FC17-B739-3259-90A4-92AC8BBE03D6> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libSparseBLAS.dylib
    0x7fff41098000 -     0x7fff4127cff3  libvDSP.dylib (671.201.1) <716585BD-04D7-30A9-B315-689184275E38> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvDSP.dylib
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    0x7fff6e138000 -     0x7fff6e2fbff7  libFosl_dynamic.dylib (18.3.2) <6EF1CB2A-2BDA-3458-B631-F794D72660FD> /usr/lib/libFosl_dynamic.dylib
    0x7fff6e351000 -     0x7fff6e370ffb  libMobileGestalt.dylib (645.200.76) <A2C32318-0E35-3963-B9B7-E1E92AD33BA6> /usr/lib/libMobileGestalt.dylib
    0x7fff6e371000 -     0x7fff6e371fff  libOpenScriptingUtil.dylib (178) <2EEBF84D-9E00-3570-AC0C-C49C8D25A8BF> /usr/lib/libOpenScriptingUtil.dylib
    0x7fff6e4b2000 -     0x7fff6e4b3ffb  libSystem.B.dylib (1252.200.5) <D5133811-9D66-3DEB-9521-0A67347C9A54> /usr/lib/libSystem.B.dylib
    0x7fff6e53d000 -     0x7fff6e53efff  libThaiTokenizer.dylib (2.15.1) <A8235B04-F541-3856-BE2E-B58EE0483AD9> /usr/lib/libThaiTokenizer.dylib
    0x7fff6e551000 -     0x7fff6e567ffb  libapple_nghttp2.dylib (1.24.1) <B8D45114-3868-3154-BC35-22597E3E7D8A> /usr/lib/libapple_nghttp2.dylib
    0x7fff6e568000 -     0x7fff6e591ffb  libarchive.2.dylib (54.200.3) <B47C54A0-3A30-374A-BD99-2304B9B0EC82> /usr/lib/libarchive.2.dylib
    0x7fff6e615000 -     0x7fff6e615ff3  libauto.dylib (187) <01824E49-F2EF-3FC1-ABF3-782EFDF6CA17> /usr/lib/libauto.dylib
    0x7fff6e6ed000 -     0x7fff6e6fdff3  libbsm.0.dylib (39.200.18) <5E5098D0-F7B2-32A1-8038-E709F6718D4E> /usr/lib/libbsm.0.dylib
    0x7fff6e6fe000 -     0x7fff6e70cfff  libbz2.1.0.dylib (38.200.3) <4EE3C5E8-BEF3-3910-A231-B1AE2B437E01> /usr/lib/libbz2.1.0.dylib
    0x7fff6e70d000 -     0x7fff6e764ff7  libc++.1.dylib (400.9.4) <D4AB366F-48A9-3C7D-91BD-41198F69DD57> /usr/lib/libc++.1.dylib
    0x7fff6e765000 -     0x7fff6e77afff  libc++abi.dylib (400.17) <BA948A32-9024-3E55-98D4-18E31F6AED25> /usr/lib/libc++abi.dylib
    0x7fff6e77b000 -     0x7fff6e77bff3  libcharset.1.dylib (51.200.6) <D998A58B-E4A8-3685-9A6A-43AFC28100EB> /usr/lib/libcharset.1.dylib
    0x7fff6e77c000 -     0x7fff6e78cffb  libcmph.dylib (6.15.1) <5D776FF6-DF7F-3EDD-B920-C07ED76C672B> /usr/lib/libcmph.dylib
    0x7fff6e78d000 -     0x7fff6e7a5ffb  libcompression.dylib (52.200.13) <EA767836-CBDC-318D-AC14-963C90D6CC67> /usr/lib/libcompression.dylib
    0x7fff6ea50000 -     0x7fff6ea66fff  libcoretls.dylib (155.200.6) <6E68F922-752C-311F-B56D-EE391E6AE1F7> /usr/lib/libcoretls.dylib
    0x7fff6ea67000 -     0x7fff6ea68ff3  libcoretls_cfhelpers.dylib (155.200.6) <7300BA76-39D2-349E-9FB8-EBE5947A708A> /usr/lib/libcoretls_cfhelpers.dylib
    0x7fff6ef32000 -     0x7fff6f0caff7  libcrypto.42.dylib (22.200.4) <EFCEE49A-759B-3A9A-A164-ECD1A98D40F9> /usr/lib/libcrypto.42.dylib
    0x7fff6f0df000 -     0x7fff6f135ffb  libcups.2.dylib (462.9) <51E06E95-891F-3B88-A8C3-35B514C57239> /usr/lib/libcups.2.dylib
    0x7fff6f15f000 -     0x7fff6f1b3ff3  libcurl.4.dylib (105.200.2) <607613FE-3D84-3035-9C79-C6F72AF287D7> /usr/lib/libcurl.4.dylib
    0x7fff6f26d000 -     0x7fff6f26dfff  libenergytrace.dylib (17.200.1) <D62ED169-B91C-3CCB-ADF5-E66AE4007B51> /usr/lib/libenergytrace.dylib
    0x7fff6f29f000 -     0x7fff6f2a4ff7  libgermantok.dylib (17.15.2) <9CBF0658-E83B-32E6-B674-3EE72D22C041> /usr/lib/libgermantok.dylib
    0x7fff6f2a5000 -     0x7fff6f2aaff7  libheimdal-asn1.dylib (520.200.17) <58971629-3850-3905-A9A1-09FCF7A32815> /usr/lib/libheimdal-asn1.dylib
    0x7fff6f2d6000 -     0x7fff6f3c7ff7  libiconv.2.dylib (51.200.6) <3240A278-F537-3EC8-BE0C-983797520A50> /usr/lib/libiconv.2.dylib
    0x7fff6f3c8000 -     0x7fff6f62bffb  libicucore.A.dylib (62107.0.1) <EAE6FC43-3AD2-3A53-9F7A-4E5E5F66D006> /usr/lib/libicucore.A.dylib
    0x7fff6f678000 -     0x7fff6f679fff  liblangid.dylib (128.15.1) <F79B6250-C0B1-3E8E-851F-6CA33B4311A3> /usr/lib/liblangid.dylib
    0x7fff6f67a000 -     0x7fff6f692fff  liblzma.5.dylib (10.200.3) <3ADDFA63-F37A-3C9C-91E4-58EE3113B9A1> /usr/lib/liblzma.5.dylib
    0x7fff6f6aa000 -     0x7fff6f75afff  libmecab.1.0.0.dylib (779.15.23) <6A38FCDA-17CE-30C3-AB66-A714CF645384> /usr/lib/libmecab.1.0.0.dylib
    0x7fff6f75b000 -     0x7fff6f998fff  libmecabra.dylib (779.15.23) <30E102AA-F3D3-3572-A1AE-1F2287DEF696> /usr/lib/libmecabra.dylib
    0x7fff6fb70000 -     0x7fff6fec8fff  libnetwork.dylib (1229.200.109) <AD59D28C-CCB2-3B34-B904-8CCCEB2CF320> /usr/lib/libnetwork.dylib
    0x7fff6ff59000 -     0x7fff706dffe7  libobjc.A.dylib (750) <2E868147-8818-359E-8CD7-A8B80665928F> /usr/lib/libobjc.A.dylib
    0x7fff706f2000 -     0x7fff706f6ffb  libpam.2.dylib (22.200.1) <8C419238-675A-3C41-B8D4-95E391CA630F> /usr/lib/libpam.2.dylib
    0x7fff706f9000 -     0x7fff7072fff7  libpcap.A.dylib (79.200.4) <5939AB23-B2A9-3C03-B6C1-4F0E5A21D9FC> /usr/lib/libpcap.A.dylib
    0x7fff70849000 -     0x7fff70861ffb  libresolv.9.dylib (65.200.2) <0FEAEB01-B926-37FA-AB47-99BAC481C10B> /usr/lib/libresolv.9.dylib
    0x7fff708a0000 -     0x7fff708b2ff7  libsasl2.2.dylib (211) <205CC13E-4ED7-3CE9-987F-12B28C6115A7> /usr/lib/libsasl2.2.dylib
    0x7fff708b5000 -     0x7fff70a8cfe7  libsqlite3.dylib (274.20) <4434B695-BC65-30D6-AFED-1B6488DB3D2E> /usr/lib/libsqlite3.dylib
    0x7fff70b8f000 -     0x7fff70bdcfff  libssl.44.dylib (22.200.4) <CF4931A6-5928-3E2B-8E31-1854F36B0C19> /usr/lib/libssl.44.dylib
    0x7fff70d19000 -     0x7fff70d1cffb  libutil.dylib (51.200.4) <91EE9BF4-FB06-3260-B502-7EFDAD5AF59B> /usr/lib/libutil.dylib
    0x7fff70d1d000 -     0x7fff70d2afff  libxar.1.dylib (404) <4B4D0206-0B62-3E89-AD07-E7BB9E4DFA68> /usr/lib/libxar.1.dylib
    0x7fff70d2f000 -     0x7fff70e12fff  libxml2.2.dylib (32.6) <BFF70F01-6755-36B9-B7AA-724743E63503> /usr/lib/libxml2.2.dylib
    0x7fff70e13000 -     0x7fff70e3bff3  libxslt.1.dylib (16.1) <F191E8B9-7530-30CA-873B-2FA2BF2D6374> /usr/lib/libxslt.1.dylib
    0x7fff70e3c000 -     0x7fff70e4effb  libz.1.dylib (70.200.4) <99A3D725-8388-38B4-B66C-5E9006E6F072> /usr/lib/libz.1.dylib
    0x7fff70ebf000 -     0x7fff70ec3ff3  libcache.dylib (81) <FE21A7E9-DBEB-33AC-836B-785AD036ACF4> /usr/lib/system/libcache.dylib
    0x7fff70ec4000 -     0x7fff70eceff3  libcommonCrypto.dylib (60118.200.6) <78093D4F-91DB-35C8-981A-13375778B2E7> /usr/lib/system/libcommonCrypto.dylib
    0x7fff70ecf000 -     0x7fff70ed6fff  libcompiler_rt.dylib (63.4) <A4D9CF37-D076-3CE9-95F1-DA89DA1601B6> /usr/lib/system/libcompiler_rt.dylib
    0x7fff70ed7000 -     0x7fff70ee0ff3  libcopyfile.dylib (146.200.3) <4BCDADBF-79F5-3829-B47D-64DA0D44BCBF> /usr/lib/system/libcopyfile.dylib
    0x7fff70ee1000 -     0x7fff70f65fff  libcorecrypto.dylib (602.200.50) <7AEC5B72-0B92-37E8-808B-6732DB714139> /usr/lib/system/libcorecrypto.dylib
    0x7fff70feb000 -     0x7fff71025ff7  libdispatch.dylib (1008.200.78) <B8962879-AD55-3CF0-9B0A-5F1D57D1E14B> /usr/lib/system/libdispatch.dylib
    0x7fff71026000 -     0x7fff71055fff  libdyld.dylib (625.13) <4B16C209-83D4-3817-9B62-C2F7FFB23755> /usr/lib/system/libdyld.dylib
    0x7fff71056000 -     0x7fff71056ffb  libkeymgr.dylib (30) <A73AA788-C35C-3284-BFCA-95B1BBDF0CF3> /usr/lib/system/libkeymgr.dylib
    0x7fff71057000 -     0x7fff71063ff7  libkxld.dylib (4903.201.2) <EAF1CF8D-3843-33BE-8126-30994685B8F0> /usr/lib/system/libkxld.dylib
    0x7fff71064000 -     0x7fff71064ff7  liblaunch.dylib (1336.201.2) <43E6698E-155E-3EAE-BAFF-CA5FCB35325C> /usr/lib/system/liblaunch.dylib
    0x7fff71065000 -     0x7fff7106afff  libmacho.dylib (917) <17BF7038-9C70-3EE1-9E96-3AE10D49669E> /usr/lib/system/libmacho.dylib
    0x7fff7106b000 -     0x7fff7106dff3  libquarantine.dylib (86.200.11) <C70DA995-0D6E-302C-A15E-F7F03A3857B4> /usr/lib/system/libquarantine.dylib
    0x7fff7106e000 -     0x7fff7106fff3  libremovefile.dylib (45.200.2) <D74A307B-3DC7-3992-B16C-DACB8207BE13> /usr/lib/system/libremovefile.dylib
    0x7fff71070000 -     0x7fff71087ff3  libsystem_asl.dylib (356.200.4) <EC9D8AD4-E5CB-3765-804A-9E1E9DC045D2> /usr/lib/system/libsystem_asl.dylib
    0x7fff71088000 -     0x7fff71088fff  libsystem_blocks.dylib (73) <26419398-C30C-30F1-B656-A92AFA9560F6> /usr/lib/system/libsystem_blocks.dylib
    0x7fff71089000 -     0x7fff71111fff  libsystem_c.dylib (1272.200.26) <3DEEE96E-6DF6-35AD-8654-D69AC26B907B> /usr/lib/system/libsystem_c.dylib
    0x7fff71112000 -     0x7fff71115ff7  libsystem_configuration.dylib (963.200.27) <02CC3996-B34E-333C-8806-AE2699D34424> /usr/lib/system/libsystem_configuration.dylib
    0x7fff71116000 -     0x7fff71119ff7  libsystem_coreservices.dylib (66) <254B6849-2C8F-302C-8616-B8324A11AB30> /usr/lib/system/libsystem_coreservices.dylib
    0x7fff7111a000 -     0x7fff71120ffb  libsystem_darwin.dylib (1272.200.26) <974E9EF7-DE72-34B7-B056-0A81C10DF8EB> /usr/lib/system/libsystem_darwin.dylib
    0x7fff71121000 -     0x7fff71127ff7  libsystem_dnssd.dylib (878.200.35) <FFC665AA-B257-35AD-BD8B-32FD42C2EEC1> /usr/lib/system/libsystem_dnssd.dylib
    0x7fff71128000 -     0x7fff71174ff3  libsystem_info.dylib (517.200.9) <0707C387-D7DE-372E-8FF1-3DE5C91932D6> /usr/lib/system/libsystem_info.dylib
    0x7fff71175000 -     0x7fff7119cff7  libsystem_kernel.dylib (4903.201.2) <45FAA4C0-D553-34FD-ADF8-884886AE0D2A> /usr/lib/system/libsystem_kernel.dylib
    0x7fff7119d000 -     0x7fff711e8ff7  libsystem_m.dylib (3158.200.7) <43aD1796B-954F-37D6-B1AC-9D80DF0655A2> /usr/lib/system/libsystem_m.dylib
    0x7fff711e9000 -     0x7fff7120dff7  libsystem_malloc.dylib (166.200.60) <846F6898-117C-3427-A8FB-3772FFC2410B> /usr/lib/system/libsystem_malloc.dylib
    0x7fff7120e000 -     0x7fff71219ffb  libsystem_networkextension.dylib (767.200.40) <F84D5474-4DC1-3E1A-AE00-8CE9593278B4> /usr/lib/system/libsystem_networkextension.dylib
    0x7fff7121a000 -     0x7fff71221fff  libsystem_notify.dylib (172.200.21) <BCCB222F-DC64-3954-A836-DCCE6659CA5A> /usr/lib/system/libsystem_notify.dylib
    0x7fff71222000 -     0x7fff7122bfef  libsystem_platform.dylib (177.200.16) <B75B04AD-69FE-3ADE-84D2-C17972FC8F49> /usr/lib/system/libsystem_platform.dylib
    0x7fff7122c000 -     0x7fff71236fff  libsystem_pthread.dylib (330.201.1) <87A6B136-E423-3B6D-A58A-137F392D7D9D> /usr/lib/system/libsystem_pthread.dylib
    0x7fff71237000 -     0x7fff7123aff7  libsystem_sandbox.dylib (851.201.1) <FBA7E09B-F10F-3424-90EA-B4999B7FB461> /usr/lib/system/libsystem_sandbox.dylib
    0x7fff7123b000 -     0x7fff7123dff7  libsystem_secinit.dylib (30.200.13) <CBEAB62B-F0A0-342F-9878-CADC14A3CB0D> /usr/lib/system/libsystem_secinit.dylib
    0x7fff7123e000 -     0x7fff71245ff7  libsystem_symptoms.dylib (820.207.88) <B6E22FA8-0F7B-36FD-9D99-284056D3CB47> /usr/lib/system/libsystem_symptoms.dylib
    0x7fff71246000 -     0x7fff7125bff7  libsystem_trace.dylib (906.200.86) <7983ED77-18B5-39A5-BE19-AE4F2832ADEA> /usr/lib/system/libsystem_trace.dylib
    0x7fff7125d000 -     0x7fff71262ffb  libunwind.dylib (35.4) <41222EF6-2233-3CF4-947A-15D48CB8C030> /usr/lib/system/libunwind.dylib
    0x7fff71263000 -     0x7fff71293fff  libxpc.dylib (1336.201.2) <0A8747D1-33AA-37E1-B97A-BA9B95FE4E8C> /usr/lib/system/libxpc.dylib
Sample analysis of process 26026 written to file /dev/stdout

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