Horton

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

Thomas Munro <thomas.munro@gmail.com>

View thread View on postgr.es
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: 2021-01-15T02:25:24Z
Lists: pgsql-hackers 
On Fri, Jan 15, 2021 at 3:07 PM Michael Paquier <michael@paquier.xyz> wrote:
> On Wed, Jan 13, 2021 at 04:27:25PM +0900, Michael Paquier wrote:
> > I have been looking again at that, and the rebased version that Andres
> > has provided would take care of that.  Any thoughts?
>
> Hearing nothing, I have applied the thing on HEAD after more tests and
> more reads of the code.

Thanks Michael!  Another notch for the unnecessary system call
hitlist: https://wiki.postgresql.org/wiki/Syscall_Reduction

Commits

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