Fix quadratic LWLock wait queue behaviour

Title

CI (CFBot)

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Stats (from CFBot)

Unknown

Topic

Performance

Created

2022-11-01 01:11:13

Last modified

2022-11-21 23:07:33 (2 years, 3 months ago)

Latest email

2022-11-21 15:31:14 (2 years, 3 months ago)

Status

2022-11: Committed

Target version

Authors

Andres Freund (andresfreund)

Reviewers

Bharath Rupireddy (bharathrupireddy)Become reviewer

Committer

Andres Freund (andresfreund)

Links

Emails

heavily contended lwlocks with long wait queues scale badly: First at 2022-10-27 16:59:14 by Andres Freund <andres at anarazel.de>
Latest at 2022-11-21 15:31:14 by "Jonathan S. Katz" <jkatz at postgresql.org>
Latest attachment (v3-0001-lwlock-fix-quadratic-behaviour-with-very-long-wai.patch) at 2022-10-31 23:51:14 from Andres Freund <andres at anarazel.de>
Attachment (v3-0001-lwlock-fix-quadratic-behaviour-with-very-long-wai.patch) at 2022-10-31 23:51:14 from Andres Freund <andres at anarazel.de> (Patch: Yes)
Attachment (fix-lwlock-queue.diff) at 2022-10-27 16:59:14 from Andres Freund <andres at anarazel.de> (Patch: Yes)

History

When	Who	What
2022-11-21 23:07:33	Andres Freund (andresfreund)	Closed in commitfest 2022-11 with status: Committed
2022-11-21 23:07:33	Andres Freund (andresfreund)	Changed committer to andresfreund
2022-11-01 11:07:15	Bharath Rupireddy (bharathrupireddy)	Added bharathrupireddy as reviewer
2022-11-01 01:11:25	Andres Freund (andresfreund)	Changed authors to Andres Freund (andresfreund)
2022-11-01 01:11:13	Andres Freund (andresfreund)	Attached mail thread 20221027165914.2hofzp4cvutj6gin@awork3.anarazel.de
2022-11-01 01:11:13	Andres Freund (andresfreund)	Created patch record