Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC
Commits:
ed55a3d7 by Cheng Shao at 2025-12-12T09:48:45-05:00
ci: use treeless fetch for perf notes
This patch improves the ci logic for fetching perf notes by using
treeless fetch
(https://github.blog/open-source/git/get-up-to-speed-with-partial-clone-and-s...),
to avoid downloading all blobs of the perf notes repo at once, and
only fetch the actually required blobs on-demand when needed. This
makes the initial `test-metrics.sh pull` operation much faster, and
also more robust, since we are seeing an increasing rate of 504 errors
in CI when fetching all perf notes at once, which is a major source of
CI flakiness at this point.
Co-authored-by: Codex
- - - - -
1 changed file:
- .gitlab/test-metrics.sh
Changes:
=====================================
.gitlab/test-metrics.sh
=====================================
@@ -17,12 +17,14 @@ fail() {
function pull() {
local ref="refs/notes/$REF"
- # 2023-10-04: `git fetch` started failing, first on Darwin in CI and then on
- # Linux locally, both using git version 2.40.1. See #24055. One workaround is
- # to set a larger http.postBuffer, although this is definitely a workaround.
- # The default should work just fine. The error could be in git, GitLab, or
- # perhaps the networking tube (including all proxies etc) between the two.
- run git -c http.postBuffer=2097152 fetch -f "$NOTES_ORIGIN" "$ref:$ref"
+
+ # Fetch performance notes from a dedicated promisor remote using a
+ # treeless filter, so that individual note blobs are fetched lazily
+ # as needed.
+ git remote add perf-notes "$NOTES_ORIGIN" || true
+ git config fetch.recurseSubmodules false
+ git config remote.perf-notes.partialclonefilter tree:0
+ run git fetch --force perf-notes "$ref:$ref"
echo "perf notes ref $ref is $(git rev-parse $ref)"
}
@@ -81,4 +83,3 @@ case $1 in
pull) pull ;;
*) fail "Invalid mode $1" ;;
esac
-
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/ed55a3d7950a1f24e8515e9fad0d7e6f...
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/ed55a3d7950a1f24e8515e9fad0d7e6f...
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