On Sun, Jun 22, 2008 at 10:37:34AM -0500, Bob Friesenhahn wrote: > > Perhaps the solution is to install more RAM in the system so that the > stripe is fully cached and ZFS does not need to go back to disk prior > to writing an update. The need to read prior to write is clearly what > kills ZFS update performance. That is why using 8K blocks helps > database performance.
How much do slogs/cache disks help in this case? I'm thinking fast SSD or fast iRAM style devices (I really wish Gigabyte would update the iRAM to SATA 3.0 and more ram, but I keep saying that, and it keeps not happening). -brian -- "Coding in C is like sending a 3 year old to do groceries. You gotta tell them exactly what you want or you'll end up with a cupboard full of pop tarts and pancake mix." -- IRC User (http://www.bash.org/?841435) _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
