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Flaky test-worker-arraybuffer-zerofill with V8 12.2 #52274

Description

@targos

Test

test-worker-arraybuffer-zerofill

Platform

No response

Console output

22:42:18 not ok 3801 parallel/test-worker-arraybuffer-zerofill
22:42:18   ---
22:42:18   duration_ms: 300091.91200
22:42:18   severity: fail
22:42:18   exitcode: -15
22:42:18   stack: |-
22:42:18     timeout
22:42:18   ...

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Additional information

test-worker-arraybuffer-zerofill: this could be a real bug, or some timing assumptions being broken/messages getting lost (which may also be a real bug). We can mark it as flaky for now, and add some logs in the test to help debugging.

Originally posted by @joyeecheung in #51362 (comment)

Activity

  1. added
    flaky-testIssues and PRs involving tests that fail intermittently in CI.
    on Mar 30, 2024
  2. jasnell commented on Sep 7, 2024

    @jasnell
    Member

    @addaleax ... in test-worker-arraybuffer-zerofill.js... do you happen to remember why the test needed to allocate such huge buffers so often?

    function allocBuffers() {
      Buffer.allocUnsafe(32 * 1024 * 1024);
    }
    
    const interval = setInterval(allocBuffers, 0);

    I think this is what is leading to the timeout flakiness in the test.

    This file was last changed five years ago so I'll understand if you don't remember ;-)

    Btw, I'm assuming it's to ensure that the allocation is expensive enough to ensure that it is likely still running when the other thread allocates?

  3. github-actions commented on May 22, 2026

    @github-actions
    Contributor

    This issue has been marked as stale due to 210 days of inactivity.
    It will be automatically closed in 30 days if no further activity occurs. If this is still relevant, please leave a comment or update it to keep it open.

  4. added
    staleIssues and PRs marked stale due to inactivity and scheduled for automatic closure.
    on May 22, 2026
  5. github-actions commented on Jun 21, 2026

    @github-actions
    Contributor

    This issue has been automatically closed after 30 days of inactivity following its stale status (no activity for a total of 240 days).
    If this is still relevant, feel free to reopen it or leave a comment with additional details so we can continue the discussion.

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    flaky-testIssues and PRs involving tests that fail intermittently in CI.staleIssues and PRs marked stale due to inactivity and scheduled for automatic closure.v8 engineIssues and PRs related to the V8 dependency.

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