| From: | Robert Pang <robertpang(at)google(dot)com> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Nathan Bossart <nathandbossart(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Andy Fan <zhihuifan1213(at)163(dot)com>, Ritu Bhandari <mailritubhandari(at)gmail(dot)com> |
| Subject: | Re: Purpose of wal_init_zero |
| Date: | 2025-01-22 21:18:00 |
| Message-ID: | CAJhEC05A=77oaL_Zt94JttaQMbBJFx7kiBivN62+N9j-VC9uow@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, Jan 15, 2025 at 12:05 PM Andres Freund <andres(at)anarazel(dot)de> wrote:
>
> If you have wal_recycle=true, this overhead will only be paid the first time a
> WAL segment is used, of course, not after recycling.
Today, our pg_stat_wal view [1] does not report the no. of WAL
segments recycled. How about if we add a column to report it so users
can track how many WAL segments are recycled vs. created over a period
of time?
[1] https://www.postgresql.org/docs/current/monitoring-stats.html#MONITORING-PG-STAT-WAL-VIEW
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