On Fri, 18 Feb 2011, Kenneth D. Merry wrote: KDM> > KDM> I just merged the mps(4) driver to stable/8, for those of you with LSI 6Gb KDM> > KDM> SAS hardware. KDM> > KDM> > [snip] KDM> > KDM> > Again, thank you very much Ken. I'm planning to stress test this on 846 case KDM> > filled with 12 (yet) WD RE4 disks organized as raidz2, and will post the KDM> > results. KDM> > KDM> > Any hints to particularly I/O stressing patterns? Out of my mind, I'm planning KDM> > multiple parallel -j'ed builds, parallel tars, *SQL benchmarks -- what else KDM> > could you suppose? KDM> KDM> The best stress test I have found has been to just do a single sequential KDM> write stream with ZFS. i.e.: KDM> KDM> cd /path/to/zfs/pool KDM> dd if=/dev/zero of=foo bs=1M KDM> KDM> Just let it run for a long period of time and see what happens.
Well, provided that I'm plannign to use ZFSv28 to be in place, wouldn't be /dev/random more appropriate? -- Sincerely, D.Marck [DM5020, MCK-RIPE, DM3-RIPN] [ FreeBSD committer: [email protected] ] ------------------------------------------------------------------------ *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- [email protected] *** ------------------------------------------------------------------------ _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[email protected]"
