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@anarazel.de> wrote:
On Friday 04 June 2010 16:25:30 Tom Lane wrote: > Andres Freund <andres@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..