ci: introduce SLO based microbenchmark checks

[brettlangdon]

Checklist

• PR author has checked that all the criteria below are met
• The PR description includes an overview of the change
• The PR description articulates the motivation for the change
• The change includes tests OR the PR description describes a testing strategy
• The PR description notes risks associated with the change, if any
• Newly-added code is easy to change
• The change follows the library release note guidelines
• The change includes or references documentation updates if necessary
• Backport labels are set (if applicable)

Reviewer Checklist

• Reviewer has checked that all the criteria below are met
• Title is accurate
• All changes are related to the pull request's stated goal
• Avoids breaking API changes
• Testing strategy adequately addresses listed risks
• Newly-added code is easy to change
• Release note makes sense to a user of the library
• If necessary, author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment
• Backport labels are set in a manner that is consistent with the release branch maintenance policy

[github-actions]

CODEOWNERS have been resolved as:

.gitlab/benchmarks/bp-runner.microbenchmarks.fail-on-breach.yml         @DataDog/python-guild @DataDog/apm-core-python
.gitlab/benchmarks/macrobenchmarks.yml                                  @DataDog/python-guild @DataDog/apm-core-python
.gitlab/benchmarks/microbenchmarks.yml                                  @DataDog/python-guild @DataDog/apm-core-python
.gitlab/download-wheels-from-gh-actions.sh                              @DataDog/python-guild @DataDog/apm-core-python
.gitlab/benchmarks/bp-runner.macrobenchmarks.fail-on-breach.yml         @DataDog/python-guild @DataDog/apm-core-python

[github-actions]

Bootstrap import analysis

Comparison of import times between this PR and base.

Summary

The average import time from this PR is: 274 ± 2 ms.

The average import time from base is: 276 ± 2 ms.

The import time difference between this PR and base is: -1.54 ± 0.08 ms.

Import time breakdown

The following import paths have shrunk:

ddtrace.auto 1.939 ms (0.71%)

ddtrace.bootstrap.sitecustomize 1.271 ms (0.46%)

ddtrace.bootstrap.preload 1.271 ms (0.46%)

ddtrace.internal.remoteconfig.client 0.645 ms (0.24%)

ddtrace 0.669 ms (0.24%)

ddtrace.internal._unpatched 0.029 ms (0.01%)

json 0.029 ms (0.01%)

json.decoder 0.029 ms (0.01%)

re 0.029 ms (0.01%)

enum 0.029 ms (0.01%)

types 0.029 ms (0.01%)

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-06-30 21:12:42

Comparing candidate commit 62cd9f6 in PR branch brettlangdon/micrbenchmark.slos with baseline commit b0c1496 in branch main.

Found 0 performance improvements and 3 performance regressions! Performance is the same for 566 metrics, 3 unstable metrics.

scenario:iastaspectsospath-ospathbasename_aspect

• 🟥 execution_time [+858.760ns; +926.198ns] or [+20.204%; +21.791%]

scenario:iastaspectsospath-ospathsplitext_aspect

• 🟥 execution_time [+615.963ns; +763.137ns] or [+13.464%; +16.681%]

scenario:telemetryaddmetric-1-distribution-metric-1-times

• 🟥 execution_time [+361.085ns; +402.337ns] or [+12.431%; +13.852%]