Andrew Dunstan wrote:
>
>
> Bruce Momjian wrote:
>
> >I have been poking around with our fsync default options to see if I can
> >improve them. One issue is that we never default to O_SYNC, but default
> >to O_DSYNC if it exists, which seems strange.
> >
> >What I did was to beef up my test program and get it into CVS for folks
> >to run. What I found was that different operating systems have
> >different optimal defaults. On BSD/OS and FreeBSD, fdatasync/fsync was
> >better, but on Linux, O_DSYNC/O_SYNC was faster.
> >
> >[snip]
> >
> >Linux 2.4.9:
> >
> >
>
> This is a pretty old kernel (I am writing from a machine running 2.4.22)
>
> Maybe before we do this for Linux testing on a more modern kernel might
> be wise.
Sure, I am sure someone will post results.
-- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610)
359-1001+ If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square,
Pennsylvania19073
