What types of journaling on each fs?
On Fri, Jun 4, 2010 at 1:26 PM, Jon Schewe <jpsch...@mtu.net> wrote: > On 6/4/10 9:33 AM, Andres Freund wrote: > > On Friday 04 June 2010 16:25:30 Tom Lane wrote: > > > >> Andres Freund <and...@anarazel.de> 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.. > > > > > > > First some details: > Linux kernel 2.6.31 > postgres version: 8.4.2 > > More test results: > reiserfs: ~1 hour 50 minutes > ext3 barrier=1: ~15 minutes > ext4 nobarrier: ~15 minutes > jfs: ~15 minutes > > -- > Jon Schewe | http://mtu.net/~jpschewe > If you see an attachment named signature.asc, this is my digital > signature. See http://www.gnupg.org for more information. > > > -- > Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-performance >
