Date: Wed, 16 Apr 2008 10:57:34 +0200 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-performance@freebsd.org Subject: Re: ZFS, Dell PE2950 Message-ID: <fu4f1u$81f$1@ger.gmane.org> In-Reply-To: <480548CF.5080104@umich.edu> References: <480548CF.5080104@umich.edu>
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[-- Attachment #1 --] Benjeman J. Meekhof wrote: > Hi, > > I posted earlier about some results with this same system using UFS2. > Now trying to test ZFS. This is a Dell PE2950 with two Perc6 > controllers and 4 md1000 disk shelves with 750GB drives. 16GB RAM, dual > quad core Xeon. I recompiled our kernel to use the ULE scheduler instead > of default. > > I could not get through an entire run of iozone without a system > reboot/crash. ZFS is clearly labeled experimental, of course. > > It seems to die for sure around 10 processes, sometimes less (this is > the end of my output from iozone): > > Children see throughput for 10 readers = 135931.72 KB/sec > Parent sees throughput for 10 readers = 135927.24 KB/sec > Min throughput per process = 13351.26 KB/sec > Max throughput per process = 14172.05 KB/sec > Avg throughput per process = 13593.17 KB/sec > Min xfer = 31586816.00 KB Can you tell us how does this compare to UFS2 results you posted previously? (since you used dd for UFS2 and now iozone for ZFS; what are your conclusions?) [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFIBb9+ldnAQVacBcgRAvuGAKDV7koR1nUT1qGQuJPspIJ7TYAn3gCglWFY biwr0YQtVlbXPKXkvzEs/dA= =BB1k -----END PGP SIGNATURE-----
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