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fix: Don't pace during QNS zerortt test #2115

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merged 1 commit into from
Sep 16, 2024

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larseggert
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If we pace, we might get the initial server flight before sending sufficient 0-RTT data to pass the QNS check.

Broken out of #1998

If we pace, we might get the initial server flight before sending
sufficient 0-RTT data to pass the QNS check.

Broken out of mozilla#1998
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Failed Interop Tests

QUIC Interop Runner, client vs. server

neqo-latest as client

neqo-latest as server

All results

Succeeded Interop Tests

QUIC Interop Runner, client vs. server

neqo-latest as client

neqo-latest as server

Unsupported Interop Tests

QUIC Interop Runner, client vs. server

neqo-latest as client

neqo-latest as server

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codecov bot commented Sep 16, 2024

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.31%. Comparing base (9dd05bb) to head (7ce2e47).
Report is 3 commits behind head on main.

Additional details and impacted files
@@            Coverage Diff             @@
##             main    #2115      +/-   ##
==========================================
- Coverage   95.35%   95.31%   -0.04%     
==========================================
  Files         112      112              
  Lines       36319    36319              
==========================================
- Hits        34631    34619      -12     
- Misses       1688     1700      +12     

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Benchmark results

Performance differences relative to 9dd05bb.

coalesce_acked_from_zero 1+1 entries: No change in performance detected.
       time:   [99.184 ns 99.523 ns 99.866 ns]
       change: [-0.5691% -0.0382% +0.4864%] (p = 0.89 > 0.05)

Found 13 outliers among 100 measurements (13.00%)
7 (7.00%) high mild
6 (6.00%) high severe

coalesce_acked_from_zero 3+1 entries: No change in performance detected.
       time:   [117.15 ns 117.54 ns 117.94 ns]
       change: [-0.1556% +0.1648% +0.4862%] (p = 0.31 > 0.05)

Found 18 outliers among 100 measurements (18.00%)
1 (1.00%) low severe
1 (1.00%) low mild
3 (3.00%) high mild
13 (13.00%) high severe

coalesce_acked_from_zero 10+1 entries: No change in performance detected.
       time:   [116.53 ns 116.83 ns 117.26 ns]
       change: [-0.5048% -0.1927% +0.0786%] (p = 0.21 > 0.05)

Found 13 outliers among 100 measurements (13.00%)
3 (3.00%) low severe
7 (7.00%) high mild
3 (3.00%) high severe

coalesce_acked_from_zero 1000+1 entries: No change in performance detected.
       time:   [98.033 ns 98.189 ns 98.363 ns]
       change: [-0.6225% +0.2240% +1.0811%] (p = 0.63 > 0.05)

Found 10 outliers among 100 measurements (10.00%)
6 (6.00%) high mild
4 (4.00%) high severe

RxStreamOrderer::inbound_frame(): Change within noise threshold.
       time:   [111.65 ms 111.78 ms 112.00 ms]
       change: [+0.0572% +0.1948% +0.3750%] (p = 0.01 < 0.05)

Found 11 outliers among 100 measurements (11.00%)
6 (6.00%) low mild
4 (4.00%) high mild
1 (1.00%) high severe

transfer/pacing-false/varying-seeds: No change in performance detected.
       time:   [27.250 ms 28.215 ms 29.181 ms]
       change: [-2.1977% +2.8410% +7.9669%] (p = 0.27 > 0.05)

Found 2 outliers among 100 measurements (2.00%)
1 (1.00%) low mild
1 (1.00%) high mild

transfer/pacing-true/varying-seeds: No change in performance detected.
       time:   [35.005 ms 36.535 ms 38.089 ms]
       change: [-5.9771% +0.2472% +6.6937%] (p = 0.94 > 0.05)

Found 1 outliers among 100 measurements (1.00%)
1 (1.00%) high mild

transfer/pacing-false/same-seed: No change in performance detected.
       time:   [31.844 ms 32.643 ms 33.436 ms]
       change: [-1.7928% +1.1342% +4.1739%] (p = 0.49 > 0.05)
transfer/pacing-true/same-seed: No change in performance detected.
       time:   [39.595 ms 42.414 ms 45.264 ms]
       change: [-7.8411% +1.8554% +12.119%] (p = 0.70 > 0.05)
1-conn/1-100mb-resp (aka. Download)/client: 💚 Performance has improved.
       time:   [112.61 ms 113.37 ms 114.12 ms]
       thrpt:  [876.30 MiB/s 882.03 MiB/s 887.99 MiB/s]
change:
       time:   [-2.4032% -1.6667% -1.0315%] (p = 0.00 < 0.05)
       thrpt:  [+1.0423% +1.6950% +2.4624%]

Found 6 outliers among 100 measurements (6.00%)
5 (5.00%) low mild
1 (1.00%) high severe

1-conn/10_000-parallel-1b-resp (aka. RPS)/client: No change in performance detected.
       time:   [313.94 ms 317.76 ms 321.55 ms]
       thrpt:  [31.099 Kelem/s 31.470 Kelem/s 31.854 Kelem/s]
change:
       time:   [-1.8871% -0.2460% +1.3311%] (p = 0.77 > 0.05)
       thrpt:  [-1.3136% +0.2466% +1.9234%]
1-conn/1-1b-resp (aka. HPS)/client: No change in performance detected.
       time:   [33.844 ms 34.042 ms 34.256 ms]
       thrpt:  [29.192  elem/s 29.375  elem/s 29.547  elem/s]
change:
       time:   [-1.4024% -0.6071% +0.1784%] (p = 0.14 > 0.05)
       thrpt:  [-0.1781% +0.6108% +1.4224%]

Found 5 outliers among 100 measurements (5.00%)
4 (4.00%) high mild
1 (1.00%) high severe

Client/server transfer results

Transfer of 33554432 bytes over loopback.

Client Server CC Pacing Mean [ms] Min [ms] Max [ms] Relative
msquic msquic 154.2 ± 82.8 96.2 384.2 1.00
neqo msquic reno on 216.2 ± 17.8 202.0 261.6 1.00
neqo msquic reno 229.2 ± 16.4 208.4 262.3 1.00
neqo msquic cubic on 221.2 ± 10.2 203.9 233.6 1.00
neqo msquic cubic 216.3 ± 13.1 202.5 241.1 1.00
msquic neqo reno on 117.5 ± 64.7 82.2 341.3 1.00
msquic neqo reno 115.4 ± 67.9 82.4 386.2 1.00
msquic neqo cubic on 90.0 ± 11.5 80.8 116.5 1.00
msquic neqo cubic 108.1 ± 53.2 82.1 328.7 1.00
neqo neqo reno on 210.8 ± 145.5 126.6 692.9 1.00
neqo neqo reno 190.1 ± 127.2 122.8 644.2 1.00
neqo neqo cubic on 253.6 ± 147.1 125.1 651.6 1.00
neqo neqo cubic 166.4 ± 69.1 127.7 446.6 1.00

⬇️ Download logs

@larseggert larseggert added this pull request to the merge queue Sep 16, 2024
Merged via the queue into mozilla:main with commit 75372c2 Sep 16, 2024
56 checks passed
@larseggert larseggert deleted the fix-qns-z-no-pacing branch September 16, 2024 11:45
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Firefox builds for this PR

The following builds are available for testing. Crossed-out builds did not succeed.

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