chore(iast): improve microbenchmarks accuracy [backport 3.4]

[avara1986]

Backport #13160 to 3.4

• remove loops and value config from appsec_iast_aspects/config.yaml and use the default values
• split appsec_iast_aspects into smaller steps due to the default values returns timeout in the CI
• Fix exception in appsec_iast_propagation/scenario.py

 File "/app/benchmarks/.venv_baseline/lib/python3.9/site-packages/pyperf/_runner.py", line 494, in task_func
    return time_func(loops, *args)
  File "/app/benchmarks/bm/_scenario.py", line 64, in _pyperf
    run(loops)
  File "/app/benchmarks/scenario.py", line 99, in _
    launch_function(self.iast_enabled, func, self.internal_loop, caller_loop)
  File "/app/benchmarks/scenario.py", line 81, in launch_function
    tainted_value = new_request(enable_propagation)
  File "/app/benchmarks/scenario.py", line 75, in new_request
    taint_pyobject_with_ranges(tainted, (CHECK_RANGES[0],))
  File "/app/benchmarks/scenario.py", line 41, in taint_pyobject_with_ranges
    set_ranges(pyobject, tuple(ranges))
ValueError: iast::propagation::native::error::Tainted Map isn't initialized
Traceback (most recent call last):

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:

benchmarks/appsec_iast_aspects_ospath/config.yaml                       @DataDog/asm-python
benchmarks/appsec_iast_aspects_ospath/functions.py                      @DataDog/asm-python
benchmarks/appsec_iast_aspects_ospath/scenario.py                       @DataDog/asm-python
benchmarks/appsec_iast_aspects_re_module/config.yaml                    @DataDog/asm-python
benchmarks/appsec_iast_aspects_re_module/functions.py                   @DataDog/asm-python
benchmarks/appsec_iast_aspects_re_module/scenario.py                    @DataDog/asm-python
benchmarks/appsec_iast_aspects_split/config.yaml                        @DataDog/asm-python
benchmarks/appsec_iast_aspects_split/functions.py                       @DataDog/asm-python
benchmarks/appsec_iast_aspects_split/scenario.py                        @DataDog/asm-python
.gitlab/benchmarks/microbenchmarks.yml                                  @DataDog/python-guild @DataDog/apm-core-python
benchmarks/appsec_iast_aspects/config.yaml                              @DataDog/asm-python
benchmarks/appsec_iast_aspects/functions.py                             @DataDog/asm-python
benchmarks/appsec_iast_propagation/scenario.py                          @DataDog/asm-python

[github-actions]

Bootstrap import analysis

Comparison of import times between this PR and base.

Summary

The average import time from this PR is: 242 ± 3 ms.

The average import time from base is: 245 ± 3 ms.

The import time difference between this PR and base is: -2.5 ± 0.1 ms.

Import time breakdown

The following import paths have shrunk:

ddtrace.auto 2.044 ms (0.84%)

ddtrace.bootstrap.sitecustomize 1.361 ms (0.56%)

ddtrace.bootstrap.preload 1.361 ms (0.56%)

ddtrace.internal.products 1.361 ms (0.56%)

ddtrace.internal.remoteconfig.client 0.646 ms (0.27%)

ddtrace 0.682 ms (0.28%)

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-04-11 12:20:48

Comparing candidate commit 63763af in PR branch backport-13160-to-3.4 with baseline commit 306489d in branch main.

Found 0 performance improvements and 7 performance regressions! Performance is the same for 497 metrics, 2 unstable metrics.

scenario:iast_aspects-ospathbasename_aspect

• 🟥 execution_time [+1.175µs; +1.235µs] or [+40.164%; +42.215%]

scenario:iast_aspects-ospathdirname_aspect

• 🟥 execution_time [+1.291µs; +1.350µs] or [+39.254%; +41.047%]

scenario:iast_aspects-ospathjoin_aspect

• 🟥 execution_time [+1.384µs; +1.448µs] or [+29.687%; +31.057%]

scenario:iast_aspects-ospathnormcase_aspect

• 🟥 execution_time [+1.139µs; +1.215µs] or [+50.053%; +53.387%]

scenario:iast_aspects-ospathsplit_aspect

• 🟥 execution_time [+1.328µs; +1.396µs] or [+37.918%; +39.841%]

scenario:iast_aspects-ospathsplitdrive_aspect

• 🟥 execution_time [+1.225µs; +1.286µs] or [+50.610%; +53.134%]

scenario:iast_aspects-ospathsplitext_aspect

• 🟥 execution_time [+1.259µs; +1.305µs] or [+38.621%; +40.037%]