On Tue, Feb 8, 2011 at 2:52 PM, Patrick M. Hausen <[email protected]> wrote: > Hello, Jeremy, > > Am 07.02.2011 um 09:55 schrieb Jeremy Chadwick: >> The Wiki is outdated, I'm sorry to say. Given that you have 8GB RAM, I >> would recommend these settings. >> ... > > Thank you very much for the insight. A current summary of recommended > settings is very much appreciated. > > Could you add values for amd64 machines with 4 and 16 GB of memory? > That would help me a lot. Storage around 4 and 11 TB, respectively. > Access pattern: backup storage. > > Kind regards, > Patrick
My home file server is similar in spec to that - Core 2 Duo, 4 GB RAM and running 8.2-RC3/amd64, with a pool with two 6 x 1.5 TB raidz arrays, for a total capacity of ~16 TB. The only ZFS settings I have changed from default are: # Allow prefetch (normally disabled for 4GB or less RAM) vfs.zfs.prefetch_disable=0 # Don't let ZFS use UMA, restricts available memory vfs.zfs.zio.use_uma=0 I think vfs.zfs.zio.use_uma defaults to 0 now anyway. I've never had a crash related to memory pressure or any other ZFS issue - it doesn't get that stressed. YMMV! Cheers Tom _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[email protected]"
