Skip to content

test: disable Maglev in near-heap-limit worker test#63398

Open
trivikr wants to merge 1 commit into
nodejs:mainfrom
trivikr:flaky-test-worker-nearheaplimit-deadlock
Open

test: disable Maglev in near-heap-limit worker test#63398
trivikr wants to merge 1 commit into
nodejs:mainfrom
trivikr:flaky-test-worker-nearheaplimit-deadlock

Conversation

@trivikr
Copy link
Copy Markdown
Member

@trivikr trivikr commented May 18, 2026

This fixes a flaky failure in test-worker-nearheaplimit-deadlock where the
worker's intentionally tiny heap can be exhausted by Maglev compilation before
the test reaches the worker startup path it is meant to cover.

The test already disables snapshots because snapshot deserialization can hit
OOM too early. This applies the same idea to Maglev: disable it so the induced
OOM occurs during message port creation and is reported as
ERR_WORKER_OUT_OF_MEMORY.

Refs:


Assisted-by: openai:gpt-5.5

The test expects the worker to run out of memory during startup while
creating the message port. With Maglev enabled, the tiny worker heap
can be exhausted earlier while generating deoptimization data, which
changes the failure mode.

Disable Maglev so the induced OOM reaches the path covered by the test.

Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: openai:gpt-5.5
@nodejs-github-bot nodejs-github-bot added needs-ci PRs that need a full CI run. test Issues and PRs related to the tests. labels May 18, 2026
@codecov
Copy link
Copy Markdown

codecov Bot commented May 18, 2026

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.06%. Comparing base (1f371fc) to head (e369913).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files
@@            Coverage Diff             @@
##             main   #63398      +/-   ##
==========================================
+ Coverage   90.05%   90.06%   +0.01%     
==========================================
  Files         714      714              
  Lines      225704   225704              
  Branches    42714    42726      +12     
==========================================
+ Hits       203250   203291      +41     
+ Misses      14225    14189      -36     
+ Partials     8229     8224       -5     

see 23 files with indirect coverage changes

🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

@trivikr trivikr added the request-ci Add this label to start a Jenkins CI on a PR. label May 18, 2026
@github-actions github-actions Bot removed the request-ci Add this label to start a Jenkins CI on a PR. label May 18, 2026
@nodejs-github-bot

This comment was marked as outdated.

@nodejs-github-bot

This comment was marked as outdated.

@trivikr trivikr added the author ready PRs that have at least one approval, no pending requests for changes, and a CI started. label May 18, 2026
@nodejs-github-bot
Copy link
Copy Markdown
Collaborator

@trivikr trivikr added the commit-queue Add this label to land a pull request using GitHub Actions. label May 18, 2026
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

author ready PRs that have at least one approval, no pending requests for changes, and a CI started. commit-queue Add this label to land a pull request using GitHub Actions. needs-ci PRs that need a full CI run. test Issues and PRs related to the tests.

Projects

None yet

Development

Successfully merging this pull request may close these issues.

5 participants