https://bz.apache.org/bugzilla/show_bug.cgi?id=70266
Bug ID: 70266
Summary: test_107_frame_lengths.py intermittently fails with
AH03490 "scoreboard is full" under CI load
Product: Apache httpd-2
Version: 2.5-HEAD
Hardware: PC
OS: Linux
Status: NEW
Severity: minor
Priority: P2
Component: Core
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Observed on GitHub Actions CI ("mod_http2 w/nghttp2 1.68.0" job) while running
an unrelated PR (apache/httpd#838):
test/modules/http2/test_107_frame_lengths.py::TestFrameLengths::test_h2_107_01[99]
failed with:
AH03490: scoreboard is full, not at MaxRequestWorkers. Increase ServerLimit.
This looks like resource exhaustion on the shared CI runner (too many httpd
child processes/connections accumulated over a long-running job) rather than a
code defect in frame-length handling itself; the test parametrizes over many
frame-length values ([99] suggests a late iteration), which may be hitting a
ServerLimit/MaxRequestWorkers ceiling that's fine for a single run but marginal
when the runner is already under load from other jobs/tests.
I searched git history for prior fixes referencing "scoreboard is full",
"AH03490", or ServerLimit tuning tied to this specific test and found nothing -
this does not appear to be a previously-documented flake, unlike the related
test_proxy_beacon.py issue I filed separately (bug 70265) which does have prior
history.
Reporting this for visibility/investigation. I have lower confidence than usual
that this indicates an actual code bug (vs. CI environment sizing) and have not
proposed any fix.
CI run for reference: apache/httpd PR #838, "mod_http2 w/nghttp2 1.68.0" job.
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