[sxa]

Fixes #67374

Some analysis from IBM Bob indicated that the preload streams into startup snapshot PR could have changed the memory allocation in a way that no longer triggers GC events when the test expects them too on Linux/ppc64le. Some tests done locally on one of the machines show that increasing the number of iterations is sufficient for the test to pass consistently as expected after the change on one of the RHEL10 machines, but I will also verify it with a stress test run on the machine that has most frequently seen the error.

Adding Matteo as a review as the author of the preload streams PR and James as original author of the test.

Alternative solution: Make this value specific to Linux/ppc64le since it does not appear to affect other platforms, but the contents of this PR is a simpler change.

We could consider fast tracking this as it has been impacting PR testing and is not a change that affects runtime functionality.

[sxa]

Confirmed that https://ci.nodejs.org/job/node-stress-single-test/979/ has demonstrated 1000/1000 passes of the test with this PR on both test-osuosl-rhel10-ppc64_le-1 and test-osuosl-rhel8-ppc64_le-4.

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/78949/

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.72%. Comparing base (2929073) to head (1abcd39).
⚠️ Report is 7 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #67379      +/-   ##
==========================================
- Coverage   92.62%   90.72%   -1.90%     
==========================================
  Files         430      798     +368     
  Lines      196333   280074   +83741     
  Branches    29897    53880   +23983     
==========================================
+ Hits       181849   254099   +72250     
- Misses      14159    16276    +2117     
- Partials      325     9699    +9374     

see 510 files with indirect coverage changes

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[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/78953/

[sxa]

Noting that this is not exclusive to plinux - it has also been seen as a failure on zlinux: https://ci.nodejs.org/job/node-test-commit-linuxone/59810/nodes=rhel8-s390x/

[pipobscure]

LGTM