can i add perf in this ubuntu

[qweccc]

can i add perf in this ubuntu

WARNING: perf not found for kernel 3.4.0+

You may need to install the following packages for this specific kernel:
linux-tools-3.4.0+

[russalex]

At this time we are focusing on providing the Bash on Ubuntu environment and some of the developer tools (i.e. node). Tools like perf have taken a lower priority. For future releases we'll be using our User Voice page to help inform us on the priorities of the community.

[BeverlyXu]

Would love to see this feature.

[therealkenc]

Will be available in WSL2 20H1, or in Insiders now.

[bushidocodes]

I'm on 20H1, and I'm unclear how to make this work.

❯ perf
WARNING: perf not found for kernel 4.19.84-microsoft

  You may need to install the following packages for this specific kernel:
    linux-tools-4.19.84-microsoft-standard
    linux-cloud-tools-4.19.84-microsoft-standard

  You may also want to install one of the following packages to keep up to date:
    linux-tools-standard
    linux-cloud-tools-standard

I saw you mention this command in another issue. Here is what I see

❯ cat /proc/config.gz | gunzip - | grep PERF_EVENTS
CONFIG_HAVE_PERF_EVENTS=y
CONFIG_PERF_EVENTS=y
# CONFIG_PERF_EVENTS_INTEL_UNCORE is not set
# CONFIG_PERF_EVENTS_INTEL_RAPL is not set
# CONFIG_PERF_EVENTS_INTEL_CSTATE is not set
# CONFIG_PERF_EVENTS_AMD_POWER is not set
CONFIG_HAVE_PERF_EVENTS_NMI=y

It seems like perhaps the kernel supports it, but I still am missing the associated aptitude packages.

[Biswa96]

You can build those Linux kernel tools from source code. Shallow clone the WSL2 Linux kernel repo, cd into tools folder, run make perf. The binary will be in that folder.

[crvdgc]

You can build those Linux kernel tools from source code. Shallow clone the WSL2 Linux kernel repo, cd into tools folder, run make perf. The binary will be in that folder.

The built perf binary can't be executed due to the failure of perf_event_open system call, see #4595 . On my system, it gives

$ ./perf record --call-graph=dwarf /path/to/binary
perf_event_open(..., 0) failed unexpectedly with error 22 (Invalid argument)
Error:
The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (cycles:u).
/bin/dmesg | grep -i perf may provide additional information.

[Biswa96]

@crvdgc In the previous comment by @bushidocodes, he mentioned WSL2 which uses actual Linux kernel. Hence perf works.

[crvdgc]

@crvdgc In the previous comment by @bushidocodes, he mentioned WSL2 which uses actual Linux kernel. Hence perf works.

Oh, you're right. I didn't realized you were replying to the WSL2 comment. Thanks.

[postwait]

I'm running insider release and my kernel (WSL2) is 4.4.0-19592-Microsoft and I'm having the same issue as @crvdgc in that perf will not run due to perf_event_open erroring:

perf_event_open({type=PERF_TYPE_SOFTWARE, size=0 /* PERF_ATTR_SIZE_??? */, config=PERF_COUNT_SW_CPU_CLOCK, ...}, -1, 0,
-1, PERF_FLAG_FD_CLOEXEC) = -1 EINVAL (Invalid argument)
perf_event_open({type=PERF_TYPE_SOFTWARE, size=0 /* PERF_ATTR_SIZE_??? */, config=PERF_COUNT_SW_CPU_CLOCK, ...}, -1, 0,
-1, 0) = -1 EINVAL (Invalid argument)

How do I get 4.19.84-microsoft ?

[postwait]

I solved my own issue, I thought WSL2 was the default on insider. I needed to upgrade my wsl

wsl --set-version Ubuntu-18.04 2

Then I built perf and it works... to save other people the effort and pain I pushed it to github... hopefully microsoft will build this and I can delete this work-around

https://github.com/postwait/wsl2-stuff/tree/master/linux-tools

[qweccc]

perf worked, running on WSL2 gentoo

[Trass3r]

https://github.com/postwait/wsl2-stuff/tree/master/linux-tools

Thanks, I built a VSCode + Docker environment based on this: https://github.com/Trass3r/WSL2-Linux-Kernel-Docker-Build/releases.
Works fine but we still need HW perf counters: #4678