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. regards, tom lane -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
