Horton

Re: fdatasync performance problem with large number of DB files

Greg Stark <stark@mit.edu>

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From: Greg Stark <stark@mit.edu>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Thomas Munro <thomas.munro@gmail.com>, Michael Brown <michael.brown@discourse.org>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2021-03-21T07:55:02Z
Lists: pgsql-hackers 
On Wed, 10 Mar 2021 at 20:25, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>
> So this means that in less-than-bleeding-edge kernels, syncfs can
> only be regarded as a dangerous toy.  If we expose an option to use
> it, there had better be large blinking warnings in the docs.

Isn't that true for fsync and everything else related on
less-than-bleeding-edge kernels anyways?

-- 
greg

Commits

  1. Change recovery_init_sync_method to PGC_SIGHUP.

  2. Provide recovery_init_sync_method=syncfs.