From owner-freebsd-geom@FreeBSD.ORG Wed Dec 7 20:27:07 2005 Return-Path: X-Original-To: freebsd-geom@FreeBSD.org Delivered-To: freebsd-geom@FreeBSD.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B709116A41F for ; Wed, 7 Dec 2005 20:27:07 +0000 (GMT) (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 2FF2243D8A for ; Wed, 7 Dec 2005 20:26:53 +0000 (GMT) (envelope-from pjd@garage.freebsd.pl) Received: by mail.garage.freebsd.pl (Postfix, from userid 65534) id F3E3252CAC; Wed, 7 Dec 2005 21:26:51 +0100 (CET) Received: from localhost (dke234.neoplus.adsl.tpnet.pl [83.24.8.234]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.garage.freebsd.pl (Postfix) with ESMTP id DF8B150F92; Wed, 7 Dec 2005 21:26:46 +0100 (CET) Date: Wed, 7 Dec 2005 21:25:53 +0100 From: Pawel Jakub Dawidek To: John-Mark Gurney Message-ID: <20051207202553.GN53288@garage.freebsd.pl> References: <20051207165538.GJ53288@garage.freebsd.pl> <002201c5fb56$bff37590$0201a8c0@oxy> <20051207185945.GQ55657@funkthat.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="z9sQuz+HmDh2hVO4" Content-Disposition: inline In-Reply-To: <20051207185945.GQ55657@funkthat.com> X-PGP-Key-URL: http://people.freebsd.org/~pjd/pjd.asc X-OS: FreeBSD 7.0-CURRENT i386 User-Agent: mutt-ng/devel-r535 (FreeBSD) X-Spam-Checker-Version: SpamAssassin 3.0.4 (2005-06-05) on mail.garage.freebsd.pl X-Spam-Level: X-Spam-Status: No, score=-0.5 required=3.0 tests=BAYES_00,RCVD_IN_NJABL_DUL, RCVD_IN_SORBS_DUL autolearn=no version=3.0.4 Cc: OxY , freebsd-geom@FreeBSD.org Subject: Re: geom mirror write performance problem 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: Wed, 07 Dec 2005 20:27:07 -0000 --z9sQuz+HmDh2hVO4 Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Dec 07, 2005 at 10:59:45AM -0800, John-Mark Gurney wrote: +> OxY wrote this message on Wed, Dec 07, 2005 at 18:50 +0100: +> > i removed the each disk from mirror one-by-one and ran the tests: +> > (when i removed one disk from the mirror the write speed was ok,=20 +> > since i added it again, then they were slow.. +> > it was no difference which disk i did removed..) +>=20 +> I know this might be a stupid question, but did you wait for the mirror +> to sync before doing your write test? Did you?:) +> pjd, does gmirror limit how fast it rebuilds the mirror? Yes, via sysctls: kern.geom.mirror.syncs_per_sec: Number of synchronizations requests per sec= ond kern.geom.mirror.reqs_per_sync: Number of regular I/O requests per synchron= ization request --=20 Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --z9sQuz+HmDh2hVO4 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQFDl0VRForvXbEpPzQRAg/HAKCVGanO3xmP0/HKpju9g1UM5z63xwCgzoPz 0I2c66CCFBcZDZNmsSdofX0= =SiYt -----END PGP SIGNATURE----- --z9sQuz+HmDh2hVO4--