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| author | Noah Misch <noah@leadboat.com> | 2024-11-02 09:04:55 -0700 |
|---|---|---|
| committer | Noah Misch <noah@leadboat.com> | 2024-11-02 09:05:07 -0700 |
| commit | 6b01cac0be6dd044fa3c2d08df7e893b96dfafe6 (patch) | |
| tree | 24a3f19969ceb1a5ed1dbfd135ca43967a5a2482 /src/tutorial | |
| parent | fe8091c9e39e65c8a0044349f0c0e7c3386ae921 (diff) | |
Move I/O before the index_update_stats() buffer lock region.
Commit a07e03fd8fa7daf4d1356f7cb501ffe784ea6257 enlarged the work done
here under the pg_class heap buffer lock. Two preexisting actions are
best done before holding that lock. Both RelationGetNumberOfBlocks()
and visibilitymap_count() do I/O, and the latter might exclusive-lock a
visibility map buffer. Moving these reduces contention and risk of
undetected LWLock deadlock. Back-patch to v12, like that commit.
Discussion: https://postgr.es/m/20241031200139.b4@rfd.leadboat.com
Diffstat (limited to 'src/tutorial')
0 files changed, 0 insertions, 0 deletions