From owner-freebsd-performance@FreeBSD.ORG Wed Apr 16 08:57:50 2008 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2B630106566C for ; Wed, 16 Apr 2008 08:57:50 +0000 (UTC) (envelope-from gofp-freebsd-performance@m.gmane.org) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by mx1.freebsd.org (Postfix) with ESMTP id ABB838FC16 for ; Wed, 16 Apr 2008 08:57:49 +0000 (UTC) (envelope-from gofp-freebsd-performance@m.gmane.org) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1Jm3SZ-0000sa-RI for freebsd-performance@freebsd.org; Wed, 16 Apr 2008 08:57:43 +0000 Received: from lara.cc.fer.hr ([161.53.72.113]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 16 Apr 2008 08:57:43 +0000 Received: from ivoras by lara.cc.fer.hr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 16 Apr 2008 08:57:43 +0000 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-performance@freebsd.org From: Ivan Voras Date: Wed, 16 Apr 2008 10:57:34 +0200 Lines: 53 Message-ID: References: <480548CF.5080104@umich.edu> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig78DB0A5F8C64169284779A1A" X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: lara.cc.fer.hr User-Agent: Thunderbird 2.0.0.12 (X11/20080227) In-Reply-To: <480548CF.5080104@umich.edu> X-Enigmail-Version: 0.95.0 Sender: news Subject: Re: ZFS, Dell PE2950 X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 16 Apr 2008 08:57:50 -0000 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--