Re: fsync on 7.1

Tom Lane wrote:
>
> Joseph Shraibman <jks(at)selectacast(dot)net> writes:
> > If I turn off fsync on 7.1 does that mean that the wal file is sync'd
> > (according to WAL_SYNC_METHOD in the log file) and other files are not?
> > Or does fsync apply to all file equally?
>
> The latter. Note where the docs say:
>
> The WAL_SYNC_METHOD parameter determines how Postgres will ask the
> kernel to force WAL updates out to disk. All the options should be the
> same as far as reliability goes, but it's quite platform-specific which
> one will be the fastest. Note that this parameter is irrelevant if FSYNC
> has been turned off.
>
> regards, tom lane

Err... where is that? I'm looking at
/usr/local/pgsql/doc/html/runtime-config.html#RUNTIME-CONFIG-WAL

--
Joseph Shraibman
jks(at)selectacast(dot)net
Increase signal to noise ratio. http://www.targabot.com