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Fixed previous PR (#22664) typo #22700

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merged 4 commits into from
Feb 8, 2024

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@iglendd iglendd commented Feb 8, 2024

What does this PR do?

Previous PR (#22664) contains a subtle bug. It will not affect a critical path of race-condition which starts when C.StopEtwSubscription() is invoked still it needs to be addressed

Motivation

n/a

Additional Notes

n/a

Possible Drawbacks / Trade-offs

Describe how to test/QA your changes

the same as previous PR, make sure that all unit and kitchen tests are passing.

Reviewer's Checklist

  • If known, an appropriate milestone has been selected; otherwise the Triage milestone is set.
  • Use the major_change label if your change either has a major impact on the code base, is impacting multiple teams or is changing important well-established internals of the Agent. This label will be use during QA to make sure each team pay extra attention to the changed behavior. For any customer facing change use a releasenote.
  • A release note has been added or the changelog/no-changelog label has been applied.
  • Changed code has automated tests for its functionality.
  • Adequate QA/testing plan information is provided. Except if the qa/skip-qa label, with required either qa/done or qa/no-code-change labels, are applied.
  • At least one team/.. label has been applied, indicating the team(s) that should QA this change.
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  • If applicable, the need-change/operator and need-change/helm labels have been applied.
  • If applicable, the k8s/<min-version> label, indicating the lowest Kubernetes version compatible with this feature.
  • If applicable, the config template has been updated.

@iglendd iglendd added this to the 7.52.0 milestone Feb 8, 2024
@iglendd iglendd requested a review from a team as a code owner February 8, 2024 14:59
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pr-commenter bot commented Feb 8, 2024

Bloop Bleep... Dogbot Here

Regression Detector Results

Run ID: fb152920-1c7d-4e5a-9351-e2ccae72e6be
Baseline: 505170c
Comparison: 54d9105
Total CPUs: 7

Performance changes are noted in the perf column of each table:

  • ✅ = significantly better comparison variant performance
  • ❌ = significantly worse comparison variant performance
  • ➖ = no significant change in performance

No significant changes in experiment optimization goals

Confidence level: 90.00%
Effect size tolerance: |Δ mean %| ≥ 5.00%

There were no significant changes in experiment optimization goals at this confidence level and effect size tolerance.

Experiments ignored for regressions

Regressions in experiments with settings containing erratic: true are ignored.

perf experiment goal Δ mean % Δ mean % CI
file_to_blackhole % cpu utilization +0.70 [-5.84, +7.24]

Fine details of change detection per experiment

perf experiment goal Δ mean % Δ mean % CI
file_tree memory utilization +0.95 [+0.82, +1.08]
idle memory utilization +0.84 [+0.80, +0.89]
file_to_blackhole % cpu utilization +0.70 [-5.84, +7.24]
otel_to_otel_logs ingress throughput +0.45 [-0.16, +1.06]
trace_agent_json ingress throughput +0.02 [-0.02, +0.05]
uds_dogstatsd_to_api ingress throughput +0.00 [-0.00, +0.00]
tcp_dd_logs_filter_exclude ingress throughput +0.00 [-0.00, +0.00]
trace_agent_msgpack ingress throughput -0.01 [-0.02, +0.00]
process_agent_standard_check_with_stats memory utilization -0.06 [-0.10, -0.01]
process_agent_standard_check memory utilization -0.13 [-0.19, -0.07]
process_agent_real_time_mode memory utilization -0.39 [-0.44, -0.35]
tcp_syslog_to_blackhole ingress throughput -0.55 [-0.61, -0.49]
uds_dogstatsd_to_api_cpu % cpu utilization -0.69 [-2.07, +0.69]

Explanation

A regression test is an A/B test of target performance in a repeatable rig, where "performance" is measured as "comparison variant minus baseline variant" for an optimization goal (e.g., ingress throughput). Due to intrinsic variability in measuring that goal, we can only estimate its mean value for each experiment; we report uncertainty in that value as a 90.00% confidence interval denoted "Δ mean % CI".

For each experiment, we decide whether a change in performance is a "regression" -- a change worth investigating further -- if all of the following criteria are true:

  1. Its estimated |Δ mean %| ≥ 5.00%, indicating the change is big enough to merit a closer look.

  2. Its 90.00% confidence interval "Δ mean % CI" does not contain zero, indicating that if our statistical model is accurate, there is at least a 90.00% chance there is a difference in performance between baseline and comparison variants.

  3. Its configuration does not mark it "erratic".

@iglendd iglendd requested a review from a team as a code owner February 8, 2024 18:45
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Approved with minor suggestions for style, thanks!

@iglendd iglendd force-pushed the len.gamburg/legacy-etw-race-incident-25148-v2 branch from 944465b to d5b645b Compare February 8, 2024 20:59
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iglendd commented Feb 8, 2024

/merge

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🚂 MergeQueue

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@dd-mergequeue dd-mergequeue bot merged commit e362e1c into main Feb 8, 2024
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@dd-mergequeue dd-mergequeue bot deleted the len.gamburg/legacy-etw-race-incident-25148-v2 branch February 8, 2024 23:02
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3 participants