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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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig78DB0A5F8C64169284779A1A Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Benjeman J. Meekhof wrote: > Hi, >=20 > 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, dua= l > quad core Xeon. I recompiled our kernel to use the ULE scheduler instea= d > of default. >=20 > I could not get through an entire run of iozone without a system > reboot/crash. ZFS is clearly labeled experimental, of course. >=20 > It seems to die for sure around 10 processes, sometimes less (this is > the end of my output from iozone): >=20 > Children see throughput for 10 readers =3D 135931.72 KB/sec > Parent sees throughput for 10 readers =3D 135927.24 = KB/sec > Min throughput per process =3D 13351.26 = KB/sec > Max throughput per process =3D 14172.05 = KB/sec > Avg throughput per process =3D 13593.17 = KB/sec > Min xfer =3D 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?) --------------enig78DB0A5F8C64169284779A1A Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFIBb9+ldnAQVacBcgRAvuGAKDV7koR1nUT1qGQuJPspIJ7TYAn3gCglWFY biwr0YQtVlbXPKXkvzEs/dA= =BB1k -----END PGP SIGNATURE----- --------------enig78DB0A5F8C64169284779A1A--
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