| From: | Nathan Bossart <nathandbossart(at)gmail(dot)com> |
|---|---|
| To: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
| Cc: | vignesh C <vignesh21(at)gmail(dot)com>, Peter Smith <smithpb2250(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Volatile write caches on macOS and Windows, redux |
| Date: | 2024-05-25 04:41:18 |
| Message-ID: | ZlFr7pH1ZvDgO3uw@nathan |
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| Thread: | |
| Lists: | pgsql-hackers |
On Thu, Mar 14, 2024 at 01:12:05PM +1300, Thomas Munro wrote:
> Short sales pitch for these patches:
>
> * the default settings eat data on Macs and Windows
> * nobody understands what wal_sync_method=fsync_writethrough means anyway
> * it's a weird kludge that it affects not only WAL, let's clean that up
I recently started using macOS for hacking on Postgres and noticed this
problem, so I was delighted to find this thread. I intend to review
further soon, but +1 for improving the default settings. I think we might
also need some additional fcntl(F_FULLFSYNC) calls in sync_pgdata(),
sync_dir_recurse(), etc., which are used by initdb, pg_basebackup, and
more.
--
Nathan Bossart
Amazon Web Services: https://aws.amazon.com
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