From owner-freebsd-geom@FreeBSD.ORG Wed Mar 28 12:02:50 2007 Return-Path: X-Original-To: freebsd-geom@freebsd.org Delivered-To: freebsd-geom@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id F2E1416A413 for ; Wed, 28 Mar 2007 12:02:49 +0000 (UTC) (envelope-from gcubfg-freebsd-geom@m.gmane.org) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by mx1.freebsd.org (Postfix) with ESMTP id 80BEE13C4C5 for ; Wed, 28 Mar 2007 12:02:49 +0000 (UTC) (envelope-from gcubfg-freebsd-geom@m.gmane.org) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1HWWrM-0005eC-Fk for freebsd-geom@freebsd.org; Wed, 28 Mar 2007 14:02:36 +0200 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, 28 Mar 2007 14:02:36 +0200 Received: from ivoras by lara.cc.fer.hr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 28 Mar 2007 14:02:36 +0200 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-geom@freebsd.org From: Ivan Voras Date: Wed, 28 Mar 2007 14:02:16 +0200 Lines: 47 Message-ID: References: <003401c7712a$f71ebb60$6502a8c0@peteruj> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig94DA44A3D5E7C984628C02BB" X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: lara.cc.fer.hr User-Agent: Thunderbird 1.5.0.10 (X11/20060911) In-Reply-To: <003401c7712a$f71ebb60$6502a8c0@peteruj> X-Enigmail-Version: 0.94.2.0 Sender: news Subject: Re: raid3 is slow 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, 28 Mar 2007 12:02:50 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig94DA44A3D5E7C984628C02BB Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable Szab=C3=B3 P=C3=A9ter wrote: > I have a raid3 setup with 5 consumers. it seems everything is all right= , but riad is very slow imho, but i don't have any reference. You need to give more accurate information. What are the "consumers" you = mention? Maybe you mean the disks/components of the RAID? > Now i copy from raid3 to a single hdd 75GB data. Nothing else run, exce= pt ssh, and ftp. Before the copy my load is 0.1, after i star the copy th= e load is 2.92 or higher, and the machine is very slow. I think this is n= ot normal, or is it? Copy how? By "cp" from shell? > My config is: > AMD Barton 2500+ with 1GB memory. >=20 > I stop the copy, load is 0.05, and start again, after a few seconds loa= d is 2.02. Due to the way raid3 works, it's by definition more CPU-intensive than=20 most other RAID levels, but it shouldn't be even remotely slow as that.=20 Also, since your load is > 2, what are the other CPU intensive tasks? --------------enig94DA44A3D5E7C984628C02BB Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iD8DBQFGCllIldnAQVacBcgRAsoSAKCREdqq6y5w3iXlHbyz/P1JofRpQACfUyQL tWYzgdzFK/imqQNDmY9ZhzI= =oLcw -----END PGP SIGNATURE----- --------------enig94DA44A3D5E7C984628C02BB--