Sounds like the device it not ignoring the cache flush requests sent down by ZFS/zil commit. If the SSD is able the drain it's internal buffer to flash on a power outage; then it needs to ignore the cache flush. You can do this on a per device basis, It's kludgy tuning but hope the instructions on the evil tuning guide will be enough.
-r Le 30 janv. 09 à 16:03, Greg Mason a écrit : >> If there was a latency issue, we would see such a problem with our >> existing file server as well, which we do not. We'd also have much >> greater problems than just file server performance. >> >> So, like I've said, we've ruled out the network as an issue. > > I should also add that I've tested these Thors with the ZIL disabled, > and they scream! With the cache flush disabled, they also do quite > well. > > The specific issue i'm trying to solve is the ZIL being slow when > using NFS. > > I really don't want to have to do something drastic like disabling the > ZIL to get the performance I need... > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
