Thread: Re: [COMMITTERS] pgsql: Update docs to say you need fsync to make sync rep work fast.
Re: [COMMITTERS] pgsql: Update docs to say you need fsync to make sync rep work fast.
From
Bruce Momjian
Date:
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@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + It's impossible for everything to be true. +
Re: Re: [COMMITTERS] pgsql: Update docs to say you need fsync to make sync rep work fast.
From
Tom Lane
Date:
Bruce Momjian <bruce@momjian.us> writes:
> Simon Riggs wrote:
>> Update docs to say you need fsync to make sync rep work fast.
> Should we also issue a warning message in the server logs for the use of
> fsync=off on the standby?
That patch was entirely wrong and has been reverted.
regards, tom lane