On Mar 27, 2009, at 1:30 PM, wrote:
> for the WAL you definantly don't need the journal, for the data I'm
> not sure. I believe that postgres does appropriate fsync calls so is
> safe on a non-journaling filesystem. the fusionIO devices are small
> enough that a fsync on them does not take that long, so it may not
> be worth the overhead of the journaling.
The win for the journal on the heap is simply so you don't need to
spend $longtime fsck'ing if you crash, etc.
Jeff Trout <>