|
|
On Oct 3, 2007, at 5:21 PM, Richard Elling wrote:
> Slightly off-topic, in looking at some field data this morning
> (looking
> for something completely unrelated) I notice that the use of directio
> on UFS is declining over time. I'm not sure what that means...
> hopefully
> not more performance escalations...
Sounds like someone from ZFS team needs to get with someone from
Oracle/MySQL/Postgres and get the skinny on how the IO rubber->road
boundary should look, because it doesn't sound like there's a
definitive or at least a sure answer here.
Oracle trumpets the use of DIO, and there are benchmarks and first-
hand accounts out there from DBAs on its virtues - at least when
running on UFS (and EXT2/3 on Linux, etc)
As it relates to ZFS mechanics specifically, there doesn't appear to
be any settled opinion.
/dale
_______________________________________________
zfs-discuss mailing list
zfs-discuss@xxxxxxxxxxxxxxx
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
|
|