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Revert "Disable Omnibus git cache for Windows builds (#32289)" #32309

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What does this PR do?

This reverts commit 9dd33c3.

Motivation

Re-enabling omnibus cache now that the issue from #incident-33348 has been fixed

Describe how you validated your changes

Possible Drawbacks / Trade-offs

Additional Notes

@chouquette chouquette added changelog/no-changelog qa/no-code-change No code change in Agent code requiring validation team/agent-delivery labels Dec 17, 2024
@chouquette chouquette requested review from a team as code owners December 17, 2024 16:03
@github-actions github-actions bot added the short review PR is simple enough to be reviewed quickly label Dec 17, 2024
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agent-platform-auto-pr bot commented Dec 17, 2024

Gitlab CI Configuration Changes

Modified Jobs

.windows_main_agent_base
  .windows_main_agent_base:
    after_script:
    - $_instance_id = (iwr  -UseBasicParsing http://169.254.169.254/latest/meta-data/instance-id).content
      ; Write-Host "Running on instance $($_instance_id)"
    artifacts:
      expire_in: 2 weeks
      paths:
      - omnibus/pkg
    needs:
    - go_mod_tidy_check
    - go_deps
    script:
    - $ErrorActionPreference = 'Stop'
    - $_instance_id = (iwr  -UseBasicParsing http://169.254.169.254/latest/meta-data/instance-id).content
      ; Write-Host "Running on instance $($_instance_id)"
    - if (Test-Path omnibus\pkg) { remove-item -recurse -force omnibus\pkg }
    - mkdir omnibus\pkg
    - 'docker run --rm -m 24576M -v "$(Get-Location):c:\mnt" -e CI_JOB_ID=${CI_JOB_ID}
      -e CI_PIPELINE_ID=${CI_PIPELINE_ID} -e CI_PROJECT_NAME=${CI_PROJECT_NAME} -e CI_COMMIT_BRANCH=${CI_COMMIT_BRANCH}
      -e CI_JOB_NAME_SLUG=${CI_JOB_NAME_SLUG} -e CI_COMMIT_REF_NAME=${CI_COMMIT_REF_NAME}
      -e OMNIBUS_TARGET=${OMNIBUS_TARGET} -e WINDOWS_BUILDER=true -e RELEASE_VERSION="$RELEASE_VERSION"
      -e MAJOR_VERSION="7" -e INTEGRATIONS_CORE_VERSION="$INTEGRATIONS_CORE_VERSION"
      -e GOMODCACHE="c:\modcache" -e AWS_NETWORKING=true -e SIGN_WINDOWS_DD_WCS=true
      -e TARGET_ARCH="$ARCH" -e DEBUG_CUSTOMACTION="$DEBUG_CUSTOMACTION" -e BUCKET_BRANCH="$BUCKET_BRANCH"
      -e S3_OMNIBUS_CACHE_BUCKET="$S3_OMNIBUS_CACHE_BUCKET" -e S3_OMNIBUS_GIT_CACHE_BUCKET="$S3_OMNIBUS_GIT_CACHE_BUCKET"
      -e USE_S3_CACHING="$USE_S3_CACHING" -e INTEGRATION_WHEELS_CACHE_BUCKET="$INTEGRATION_WHEELS_CACHE_BUCKET"
      -e BUNDLE_MIRROR__RUBYGEMS__ORG=${BUNDLE_MIRROR__RUBYGEMS__ORG} -e PIP_INDEX_URL=${PIP_INDEX_URL}
+     -e API_KEY_ORG2=${API_KEY_ORG2} -e OMNIBUS_GIT_CACHE_DIR=${Env:TEMP}/${CI_PIPELINE_ID}/omnibus-git-cache
-     -e API_KEY_ORG2=${API_KEY_ORG2} -e AGENT_FLAVOR=${AGENT_FLAVOR} registry.ddbuild.io/ci/datadog-agent-buildimages/windows_1809_${ARCH}${Env:DATADOG_AGENT_WINBUILDIMAGES_SUFFIX}:${Env:DATADOG_AGENT_WINBUILDIMAGES}
?    --------------------------------
+     -e AGENT_FLAVOR=${AGENT_FLAVOR} registry.ddbuild.io/ci/datadog-agent-buildimages/windows_1809_${ARCH}${Env:DATADOG_AGENT_WINBUILDIMAGES_SUFFIX}:${Env:DATADOG_AGENT_WINBUILDIMAGES}
      powershell -C "c:\mnt\tasks\winbuildscripts\Build-AgentPackages.ps1 -BuildOutOfSource
      1 -InstallDeps 1 -CheckGoVersion 1"
  
      '
    - If ($lastExitCode -ne "0") { throw "Previous command returned $lastExitCode" }
    - get-childitem omnibus\pkg
    - Invoke-Expression "$S3_CP_CMD omnibus\pkg\version-manifest.json $S3_SBOM_STORAGE_URI/$CI_JOB_NAME/version-manifest.json"
    - If ($lastExitCode -ne "0") { throw "Previous command returned $lastExitCode" }
    stage: package_build
    tags:
    - runner:windows-docker
    - windowsversion:1809
    variables:
      OMNIBUS_TARGET: main
.windows_msi_base
  .windows_msi_base:
    after_script:
    - $_instance_id = (iwr  -UseBasicParsing http://169.254.169.254/latest/meta-data/instance-id).content
      ; Write-Host "Running on instance $($_instance_id)"
    artifacts:
      expire_in: 2 weeks
      paths:
      - omnibus/pkg
    needs:
    - go_mod_tidy_check
    - go_deps
    script:
    - $ErrorActionPreference = 'Stop'
    - $_instance_id = (iwr  -UseBasicParsing http://169.254.169.254/latest/meta-data/instance-id).content
      ; Write-Host "Running on instance $($_instance_id)"
    - if (Test-Path omnibus\pkg) { remove-item -recurse -force omnibus\pkg }
    - mkdir omnibus\pkg
    - 'docker run --rm -m 24576M -v "$(Get-Location):c:\mnt" -e CI_JOB_ID=${CI_JOB_ID}
      -e CI_PIPELINE_ID=${CI_PIPELINE_ID} -e CI_PROJECT_NAME=${CI_PROJECT_NAME} -e CI_COMMIT_BRANCH=${CI_COMMIT_BRANCH}
      -e CI_JOB_NAME_SLUG=${CI_JOB_NAME_SLUG} -e CI_COMMIT_REF_NAME=${CI_COMMIT_REF_NAME}
      -e OMNIBUS_TARGET=${OMNIBUS_TARGET} -e WINDOWS_BUILDER=true -e RELEASE_VERSION="$RELEASE_VERSION"
      -e MAJOR_VERSION="7" -e INTEGRATIONS_CORE_VERSION="$INTEGRATIONS_CORE_VERSION"
      -e GOMODCACHE="c:\modcache" -e AWS_NETWORKING=true -e SIGN_WINDOWS_DD_WCS=true
      -e TARGET_ARCH="$ARCH" -e DEBUG_CUSTOMACTION="$DEBUG_CUSTOMACTION" -e BUCKET_BRANCH="$BUCKET_BRANCH"
      -e S3_OMNIBUS_CACHE_BUCKET="$S3_OMNIBUS_CACHE_BUCKET" -e S3_OMNIBUS_GIT_CACHE_BUCKET="$S3_OMNIBUS_GIT_CACHE_BUCKET"
      -e USE_S3_CACHING="$USE_S3_CACHING" -e INTEGRATION_WHEELS_CACHE_BUCKET="$INTEGRATION_WHEELS_CACHE_BUCKET"
      -e BUNDLE_MIRROR__RUBYGEMS__ORG=${BUNDLE_MIRROR__RUBYGEMS__ORG} -e PIP_INDEX_URL=${PIP_INDEX_URL}
+     -e API_KEY_ORG2=${API_KEY_ORG2} -e OMNIBUS_GIT_CACHE_DIR=${Env:TEMP}/${CI_PIPELINE_ID}/omnibus-git-cache
-     -e API_KEY_ORG2=${API_KEY_ORG2} -e AGENT_FLAVOR=${AGENT_FLAVOR} registry.ddbuild.io/ci/datadog-agent-buildimages/windows_1809_${ARCH}${Env:DATADOG_AGENT_WINBUILDIMAGES_SUFFIX}:${Env:DATADOG_AGENT_WINBUILDIMAGES}
?    --------------------------------
+     -e AGENT_FLAVOR=${AGENT_FLAVOR} registry.ddbuild.io/ci/datadog-agent-buildimages/windows_1809_${ARCH}${Env:DATADOG_AGENT_WINBUILDIMAGES_SUFFIX}:${Env:DATADOG_AGENT_WINBUILDIMAGES}
      powershell -C "c:\mnt\tasks\winbuildscripts\Build-AgentPackages.ps1 -BuildOutOfSource
      1 -InstallDeps 1 -CheckGoVersion 1"
  
      '
    - If ($lastExitCode -ne "0") { throw "Previous command returned $lastExitCode" }
    - get-childitem omnibus\pkg
    - Invoke-Expression "$S3_CP_CMD omnibus\pkg\version-manifest.json $S3_SBOM_STORAGE_URI/$CI_JOB_NAME/version-manifest.json"
    - If ($lastExitCode -ne "0") { throw "Previous command returned $lastExitCode" }
    stage: package_build
    tags:
    - runner:windows-docker
    - windowsversion:1809
windows_msi_and_bosh_zip_x64-a7
  windows_msi_and_bosh_zip_x64-a7:
    after_script:
    - $_instance_id = (iwr  -UseBasicParsing http://169.254.169.254/latest/meta-data/instance-id).content
      ; Write-Host "Running on instance $($_instance_id)"
    artifacts:
      expire_in: 2 weeks
      paths:
      - omnibus/pkg
    before_script:
    - set RELEASE_VERSION $RELEASE_VERSION_7
    needs:
    - go_mod_tidy_check
    - go_deps
    rules:
    - if: $CI_COMMIT_BRANCH =~ /^mq-working-branch-/
      when: never
    - when: on_success
    script:
    - $ErrorActionPreference = 'Stop'
    - $_instance_id = (iwr  -UseBasicParsing http://169.254.169.254/latest/meta-data/instance-id).content
      ; Write-Host "Running on instance $($_instance_id)"
    - if (Test-Path omnibus\pkg) { remove-item -recurse -force omnibus\pkg }
    - mkdir omnibus\pkg
    - 'docker run --rm -m 24576M -v "$(Get-Location):c:\mnt" -e CI_JOB_ID=${CI_JOB_ID}
      -e CI_PIPELINE_ID=${CI_PIPELINE_ID} -e CI_PROJECT_NAME=${CI_PROJECT_NAME} -e CI_COMMIT_BRANCH=${CI_COMMIT_BRANCH}
      -e CI_JOB_NAME_SLUG=${CI_JOB_NAME_SLUG} -e CI_COMMIT_REF_NAME=${CI_COMMIT_REF_NAME}
      -e OMNIBUS_TARGET=${OMNIBUS_TARGET} -e WINDOWS_BUILDER=true -e RELEASE_VERSION="$RELEASE_VERSION"
      -e MAJOR_VERSION="7" -e INTEGRATIONS_CORE_VERSION="$INTEGRATIONS_CORE_VERSION"
      -e GOMODCACHE="c:\modcache" -e AWS_NETWORKING=true -e SIGN_WINDOWS_DD_WCS=true
      -e TARGET_ARCH="$ARCH" -e DEBUG_CUSTOMACTION="$DEBUG_CUSTOMACTION" -e BUCKET_BRANCH="$BUCKET_BRANCH"
      -e S3_OMNIBUS_CACHE_BUCKET="$S3_OMNIBUS_CACHE_BUCKET" -e S3_OMNIBUS_GIT_CACHE_BUCKET="$S3_OMNIBUS_GIT_CACHE_BUCKET"
      -e USE_S3_CACHING="$USE_S3_CACHING" -e INTEGRATION_WHEELS_CACHE_BUCKET="$INTEGRATION_WHEELS_CACHE_BUCKET"
      -e BUNDLE_MIRROR__RUBYGEMS__ORG=${BUNDLE_MIRROR__RUBYGEMS__ORG} -e PIP_INDEX_URL=${PIP_INDEX_URL}
+     -e API_KEY_ORG2=${API_KEY_ORG2} -e OMNIBUS_GIT_CACHE_DIR=${Env:TEMP}/${CI_PIPELINE_ID}/omnibus-git-cache
-     -e API_KEY_ORG2=${API_KEY_ORG2} -e AGENT_FLAVOR=${AGENT_FLAVOR} registry.ddbuild.io/ci/datadog-agent-buildimages/windows_1809_${ARCH}${Env:DATADOG_AGENT_WINBUILDIMAGES_SUFFIX}:${Env:DATADOG_AGENT_WINBUILDIMAGES}
?    --------------------------------
+     -e AGENT_FLAVOR=${AGENT_FLAVOR} registry.ddbuild.io/ci/datadog-agent-buildimages/windows_1809_${ARCH}${Env:DATADOG_AGENT_WINBUILDIMAGES_SUFFIX}:${Env:DATADOG_AGENT_WINBUILDIMAGES}
      powershell -C "c:\mnt\tasks\winbuildscripts\Build-AgentPackages.ps1 -BuildOutOfSource
      1 -InstallDeps 1 -CheckGoVersion 1"
  
      '
    - If ($lastExitCode -ne "0") { throw "Previous command returned $lastExitCode" }
    - get-childitem omnibus\pkg
    - Invoke-Expression "$S3_CP_CMD omnibus\pkg\version-manifest.json $S3_SBOM_STORAGE_URI/$CI_JOB_NAME/version-manifest.json"
    - If ($lastExitCode -ne "0") { throw "Previous command returned $lastExitCode" }
    stage: package_build
    tags:
    - runner:windows-docker
    - windowsversion:1809
    timeout: 2h
    variables:
      ARCH: x64
      OMNIBUS_TARGET: main
windows_msi_and_bosh_zip_x64-a7-fips
  windows_msi_and_bosh_zip_x64-a7-fips:
    after_script:
    - $_instance_id = (iwr  -UseBasicParsing http://169.254.169.254/latest/meta-data/instance-id).content
      ; Write-Host "Running on instance $($_instance_id)"
    artifacts:
      expire_in: 2 weeks
      paths:
      - omnibus/pkg
    before_script:
    - set RELEASE_VERSION $RELEASE_VERSION_7
    needs:
    - go_mod_tidy_check
    - go_deps
    rules:
    - if: $CI_COMMIT_BRANCH =~ /^mq-working-branch-/
      when: never
    - when: on_success
    script:
    - $ErrorActionPreference = 'Stop'
    - $_instance_id = (iwr  -UseBasicParsing http://169.254.169.254/latest/meta-data/instance-id).content
      ; Write-Host "Running on instance $($_instance_id)"
    - if (Test-Path omnibus\pkg) { remove-item -recurse -force omnibus\pkg }
    - mkdir omnibus\pkg
    - 'docker run --rm -m 24576M -v "$(Get-Location):c:\mnt" -e CI_JOB_ID=${CI_JOB_ID}
      -e CI_PIPELINE_ID=${CI_PIPELINE_ID} -e CI_PROJECT_NAME=${CI_PROJECT_NAME} -e CI_COMMIT_BRANCH=${CI_COMMIT_BRANCH}
      -e CI_JOB_NAME_SLUG=${CI_JOB_NAME_SLUG} -e CI_COMMIT_REF_NAME=${CI_COMMIT_REF_NAME}
      -e OMNIBUS_TARGET=${OMNIBUS_TARGET} -e WINDOWS_BUILDER=true -e RELEASE_VERSION="$RELEASE_VERSION"
      -e MAJOR_VERSION="7" -e INTEGRATIONS_CORE_VERSION="$INTEGRATIONS_CORE_VERSION"
      -e GOMODCACHE="c:\modcache" -e AWS_NETWORKING=true -e SIGN_WINDOWS_DD_WCS=true
      -e TARGET_ARCH="$ARCH" -e DEBUG_CUSTOMACTION="$DEBUG_CUSTOMACTION" -e BUCKET_BRANCH="$BUCKET_BRANCH"
      -e S3_OMNIBUS_CACHE_BUCKET="$S3_OMNIBUS_CACHE_BUCKET" -e S3_OMNIBUS_GIT_CACHE_BUCKET="$S3_OMNIBUS_GIT_CACHE_BUCKET"
      -e USE_S3_CACHING="$USE_S3_CACHING" -e INTEGRATION_WHEELS_CACHE_BUCKET="$INTEGRATION_WHEELS_CACHE_BUCKET"
      -e BUNDLE_MIRROR__RUBYGEMS__ORG=${BUNDLE_MIRROR__RUBYGEMS__ORG} -e PIP_INDEX_URL=${PIP_INDEX_URL}
+     -e API_KEY_ORG2=${API_KEY_ORG2} -e OMNIBUS_GIT_CACHE_DIR=${Env:TEMP}/${CI_PIPELINE_ID}/omnibus-git-cache
-     -e API_KEY_ORG2=${API_KEY_ORG2} -e AGENT_FLAVOR=${AGENT_FLAVOR} registry.ddbuild.io/ci/datadog-agent-buildimages/windows_1809_${ARCH}${Env:DATADOG_AGENT_WINBUILDIMAGES_SUFFIX}:${Env:DATADOG_AGENT_WINBUILDIMAGES}
?    --------------------------------
+     -e AGENT_FLAVOR=${AGENT_FLAVOR} registry.ddbuild.io/ci/datadog-agent-buildimages/windows_1809_${ARCH}${Env:DATADOG_AGENT_WINBUILDIMAGES_SUFFIX}:${Env:DATADOG_AGENT_WINBUILDIMAGES}
      powershell -C "c:\mnt\tasks\winbuildscripts\Build-AgentPackages.ps1 -BuildOutOfSource
      1 -InstallDeps 1 -CheckGoVersion 1"
  
      '
    - If ($lastExitCode -ne "0") { throw "Previous command returned $lastExitCode" }
    - get-childitem omnibus\pkg
    - Invoke-Expression "$S3_CP_CMD omnibus\pkg\version-manifest.json $S3_SBOM_STORAGE_URI/$CI_JOB_NAME/version-manifest.json"
    - If ($lastExitCode -ne "0") { throw "Previous command returned $lastExitCode" }
    stage: package_build
    tags:
    - runner:windows-docker
    - windowsversion:1809
    timeout: 2h
    variables:
      AGENT_FLAVOR: fips
      ARCH: x64
      OMNIBUS_TARGET: main

Changes Summary

Removed Modified Added Renamed
0 4 0 0

ℹ️ Diff available in the job log.

@agent-platform-auto-pr
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agent-platform-auto-pr bot commented Dec 17, 2024

[Fast Unit Tests Report]

On pipeline 51408694 (CI Visibility). The following jobs did not run any unit tests:

Jobs:
  • tests_deb-arm64-py3
  • tests_deb-x64-py3
  • tests_flavor_dogstatsd_deb-x64
  • tests_flavor_heroku_deb-x64
  • tests_flavor_iot_deb-x64
  • tests_rpm-arm64-py3
  • tests_rpm-x64-py3
  • tests_windows-x64

If you modified Go files and expected unit tests to run in these jobs, please double check the job logs. If you think tests should have been executed reach out to #agent-devx-help

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agent-platform-auto-pr bot commented Dec 17, 2024

Uncompressed package size comparison

Comparison with ancestor 9f73ec4f6622e92c48f9008b7797ef5aeb9dc28f

Diff per package
package diff status size ancestor threshold
datadog-agent-x86_64-rpm 0.02MB ⚠️ 1196.99MB 1196.98MB 140.00MB
datadog-agent-x86_64-suse 0.02MB ⚠️ 1196.99MB 1196.98MB 140.00MB
datadog-agent-amd64-deb 0.02MB ⚠️ 1187.76MB 1187.74MB 140.00MB
datadog-agent-arm64-deb 0.02MB ⚠️ 933.77MB 933.76MB 140.00MB
datadog-agent-aarch64-rpm 0.01MB ⚠️ 942.99MB 942.97MB 140.00MB
datadog-dogstatsd-amd64-deb 0.00MB 78.58MB 78.58MB 10.00MB
datadog-dogstatsd-x86_64-rpm 0.00MB 78.65MB 78.65MB 10.00MB
datadog-dogstatsd-x86_64-suse 0.00MB 78.65MB 78.65MB 10.00MB
datadog-dogstatsd-arm64-deb 0.00MB 55.78MB 55.78MB 10.00MB
datadog-heroku-agent-amd64-deb 0.00MB 505.04MB 505.04MB 70.00MB
datadog-iot-agent-amd64-deb 0.00MB 113.30MB 113.30MB 10.00MB
datadog-iot-agent-x86_64-rpm 0.00MB 113.37MB 113.37MB 10.00MB
datadog-iot-agent-x86_64-suse 0.00MB 113.37MB 113.37MB 10.00MB
datadog-iot-agent-arm64-deb 0.00MB 108.77MB 108.77MB 10.00MB
datadog-iot-agent-aarch64-rpm 0.00MB 108.84MB 108.84MB 10.00MB

Decision

⚠️ Warning

@chouquette chouquette force-pushed the chouquette/reenable_omnibus_cache_windows branch from eed2711 to 189ada7 Compare December 18, 2024 07:32
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Regression Detector

Regression Detector Results

Metrics dashboard
Target profiles
Run ID: 4c28ce4c-687e-4202-9e2c-ecf7f3b4f567

Baseline: 9f73ec4
Comparison: 189ada7
Diff

Optimization Goals: ✅ No significant changes detected

Fine details of change detection per experiment

perf experiment goal Δ mean % Δ mean % CI trials links
file_tree memory utilization +0.88 [+0.76, +1.01] 1 Logs
quality_gate_logs % cpu utilization +0.63 [-2.31, +3.57] 1 Logs
quality_gate_idle memory utilization +0.43 [+0.39, +0.48] 1 Logs bounds checks dashboard
file_to_blackhole_1000ms_latency egress throughput +0.28 [-0.53, +1.08] 1 Logs
file_to_blackhole_500ms_latency egress throughput +0.19 [-0.58, +0.96] 1 Logs
file_to_blackhole_100ms_latency egress throughput +0.11 [-0.60, +0.83] 1 Logs
file_to_blackhole_0ms_latency_http2 egress throughput +0.04 [-0.87, +0.95] 1 Logs
tcp_dd_logs_filter_exclude ingress throughput -0.00 [-0.01, +0.01] 1 Logs
uds_dogstatsd_to_api ingress throughput -0.01 [-0.12, +0.10] 1 Logs
file_to_blackhole_300ms_latency egress throughput -0.02 [-0.65, +0.61] 1 Logs
file_to_blackhole_0ms_latency_http1 egress throughput -0.08 [-0.95, +0.79] 1 Logs
file_to_blackhole_0ms_latency egress throughput -0.13 [-0.99, +0.72] 1 Logs
quality_gate_idle_all_features memory utilization -0.14 [-0.26, -0.01] 1 Logs bounds checks dashboard
file_to_blackhole_1000ms_latency_linear_load egress throughput -0.35 [-0.81, +0.12] 1 Logs
otel_to_otel_logs ingress throughput -0.56 [-1.22, +0.11] 1 Logs
tcp_syslog_to_blackhole ingress throughput -0.57 [-0.63, -0.52] 1 Logs
uds_dogstatsd_to_api_cpu % cpu utilization -0.78 [-1.52, -0.05] 1 Logs

Bounds Checks: ✅ Passed

perf experiment bounds_check_name replicates_passed links
file_to_blackhole_0ms_latency lost_bytes 10/10
file_to_blackhole_0ms_latency memory_usage 10/10
file_to_blackhole_0ms_latency_http1 lost_bytes 10/10
file_to_blackhole_0ms_latency_http1 memory_usage 10/10
file_to_blackhole_0ms_latency_http2 lost_bytes 10/10
file_to_blackhole_0ms_latency_http2 memory_usage 10/10
file_to_blackhole_1000ms_latency memory_usage 10/10
file_to_blackhole_1000ms_latency_linear_load memory_usage 10/10
file_to_blackhole_100ms_latency lost_bytes 10/10
file_to_blackhole_100ms_latency memory_usage 10/10
file_to_blackhole_300ms_latency lost_bytes 10/10
file_to_blackhole_300ms_latency memory_usage 10/10
file_to_blackhole_500ms_latency lost_bytes 10/10
file_to_blackhole_500ms_latency memory_usage 10/10
quality_gate_idle memory_usage 10/10 bounds checks dashboard
quality_gate_idle_all_features memory_usage 10/10 bounds checks dashboard
quality_gate_logs lost_bytes 10/10
quality_gate_logs memory_usage 10/10

Explanation

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

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

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".

CI Pass/Fail Decision

Passed. All Quality Gates passed.

  • quality_gate_logs, bounds check memory_usage: 10/10 replicas passed. Gate passed.
  • quality_gate_logs, bounds check lost_bytes: 10/10 replicas passed. Gate passed.
  • quality_gate_idle_all_features, bounds check memory_usage: 10/10 replicas passed. Gate passed.
  • quality_gate_idle, bounds check memory_usage: 10/10 replicas passed. Gate passed.

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