Re: How filesystems matter with PostgreSQL

[Jon Schewe <jpschewe@xxxxxxx>]

I'm running on Linux, so that's not really an option here.

On 6/4/10 1:20 PM, Bryan Hinton wrote:

UFS2 w/ soft updates on FreeBSD might be an interesting addition to the list of test cases

On Fri, Jun 4, 2010 at 9:33 AM, Andres Freund <andres@xxxxxxxxxxx> wrote:

On Friday 04 June 2010 16:25:30 Tom Lane wrote:
> Andres Freund <andres@xxxxxxxxxxx> writes:
> > On Friday 04 June 2010 14:17:35 Jon Schewe wrote:
> >> XFS (logbufs=8): ~4 hours to finish
> >> ext4: ~1 hour 50 minutes to finish
> >> ext3: 15 minutes to finish
> >> ext3 on LVM: 15 minutes to finish
> >
> > My guess is that some of the difference comes from barrier differences.
> > ext4 uses barriers by default, ext3 does not.
> Or, to put it more clearly: the reason ext3 is fast is that it's unsafe.

Jon: To verify you can enable it via the barrier=1 option during mounting..

Andres

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