Horton

Re: O(n^2) system calls in RemoveOldXlogFiles()

Thomas Munro <thomas.munro@gmail.com>

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From: Thomas Munro <thomas.munro@gmail.com>
To: Michael Paquier <michael@paquier.xyz>
Cc: Andres Freund <andres@anarazel.de>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2021-01-12T10:30:13Z
Lists: pgsql-hackers 
On Tue, Jan 12, 2021 at 8:27 PM Michael Paquier <michael@paquier.xyz> wrote:
> Yeah, this rings a bell.  I never went back to it even if the thing
> looks rather clean at quick glance (not tested), but I may be able
> to spend some cycles on that.  I don't think that's critical enough
> for a backpatch, so doing something only on HEAD is fine by me.
> What's your take?

I haven't heard any user complaints, and I'd personally be happy with
a fix on master only.

Commits

  1. Fix O(N^2) stat() calls when recycling WAL segments