| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgreSQL(dot)org> |
| Subject: | Re: [COMMITTERS] pgsql: Update docs to say you need fsync to make sync rep work fast. |
| Date: | 2011-04-30 16:30:51 |
| Message-ID: | 201104301630.p3UGUp905642@momjian.us |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-committers pgsql-hackers |
Simon Riggs wrote:
> Update docs to say you need fsync to make sync rep work fast.
>
> Branch
> ------
> master
>
> Details
> -------
> http://git.postgresql.org/pg/commitdiff/6e8e7cc580665ddd43c8ca2acc6d60f345570a57
This patch added this documentation text:
+ Replies are only sent when WAL is written to disk, so setting
+ <varname>fsync</> to <literal>off</> on the standby will significantly
+ reduce performance of synchronous replication and should be avoided.
Should we also issue a warning message in the server logs for the use of
fsync=off on the standby?
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ It's impossible for everything to be true. +
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Tom Lane | 2011-04-30 17:39:37 | Re: Re: [COMMITTERS] pgsql: Update docs to say you need fsync to make sync rep work fast. |
| Previous Message | Bruce Momjian | 2011-04-30 02:28:58 | pgsql: Lowercase status labels in pg_stat_replication view. |
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Tom Lane | 2011-04-30 17:33:27 | Re: Changing the continuation-line prompt in psql? |
| Previous Message | Bruce Momjian | 2011-04-30 16:25:56 | Re: Feature proposal: distinguish each PostgreSQL instance in the event log |