From owner-freebsd-geom@FreeBSD.ORG Sat Sep 22 01:20:24 2007 Return-Path: Delivered-To: freebsd-geom@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 730BB16A480 for ; Sat, 22 Sep 2007 01:20:24 +0000 (UTC) (envelope-from pjd@garage.freebsd.pl) Received: from mail.garage.freebsd.pl (arm132.internetdsl.tpnet.pl [83.17.198.132]) by mx1.freebsd.org (Postfix) with ESMTP id 1D99C13C458 for ; Sat, 22 Sep 2007 01:20:23 +0000 (UTC) (envelope-from pjd@garage.freebsd.pl) Received: by mail.garage.freebsd.pl (Postfix, from userid 65534) id 49C6645E90; Sat, 22 Sep 2007 03:20:21 +0200 (CEST) Received: from localhost (154.81.datacomsa.pl [195.34.81.154]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.garage.freebsd.pl (Postfix) with ESMTP id 00AF145CD9; Sat, 22 Sep 2007 03:20:15 +0200 (CEST) Date: Sat, 22 Sep 2007 03:18:47 +0200 From: Pawel Jakub Dawidek To: Michael Monashev Message-ID: <20070922011847.GH9445@garage.freebsd.pl> References: <20070921143318.GC5690@garage.freebsd.pl> <20070921170506.GB9445@garage.freebsd.pl> <1310567292.20070921235802@gmail.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="+9faIjRurCDpBc7U" Content-Disposition: inline In-Reply-To: <1310567292.20070921235802@gmail.com> User-Agent: Mutt/1.4.2.3i X-PGP-Key-URL: http://people.freebsd.org/~pjd/pjd.asc X-OS: FreeBSD 7.0-CURRENT i386 X-Spam-Checker-Version: SpamAssassin 3.0.4 (2005-06-05) on mail.garage.freebsd.pl X-Spam-Level: X-Spam-Status: No, score=-2.6 required=3.0 tests=BAYES_00 autolearn=ham version=3.0.4 Cc: freebsd-geom@freebsd.org Subject: Re: raidtest for zfs X-BeenThere: freebsd-geom@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: GEOM-specific discussions and implementations List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 22 Sep 2007 01:20:24 -0000 --+9faIjRurCDpBc7U Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Sep 21, 2007 at 11:58:02PM +0400, Michael Monashev wrote: > I run: >=20 > > raidtest test -d /dev/zvol/tank/vol -n 10 -w > Read 50000 requests from raidtest.data. > Number of READ requests: 0. > Number of WRITE requests: 50000. > Number of bytes to transmit: 3281546240. > Number of processes: 10. > Bytes per second: 120195634 > Requests per second: 1831 > > zpool export tank > > zpool import tank > > raidtest test -d /dev/zvol/tank/vol -n 10 -r > Read 50000 requests from raidtest.data. > Number of READ requests: 50000. > Number of WRITE requests: 0. > Number of bytes to transmit: 3281546240. > Number of processes: 10. > Bytes per second: 69264127 > Requests per second: 1055 >=20 > Results seems too strange again. [...] What's strange about those results? Can you show us 'zpool status' and explain what you expect and why? > [...] How to turn off zfs cache completely? You can't, but for reading you just need to export/import your pool to get rid of existing cache. --=20 Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --+9faIjRurCDpBc7U Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQFG9G13ForvXbEpPzQRAk3SAKDpIPttImEL9UjJHMH4fKekxeugLgCfYUPU a48W71lYaterBUafVJ8od8Q= =35Bw -----END PGP SIGNATURE----- --+9faIjRurCDpBc7U--