From owner-freebsd-geom@FreeBSD.ORG  Wed Mar 28 14:00:31 2007
Return-Path: <owner-freebsd-geom@FreeBSD.ORG>
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 77CD116A402
	for <freebsd-geom@freebsd.org>; Wed, 28 Mar 2007 14:00:31 +0000 (UTC)
	(envelope-from arne_woerner@yahoo.com)
Received: from web30305.mail.mud.yahoo.com (web30305.mail.mud.yahoo.com
	[209.191.69.67])
	by mx1.freebsd.org (Postfix) with SMTP id 245AD13C45A
	for <freebsd-geom@freebsd.org>; Wed, 28 Mar 2007 14:00:31 +0000 (UTC)
	(envelope-from arne_woerner@yahoo.com)
Received: (qmail 73737 invoked by uid 60001); 28 Mar 2007 14:00:29 -0000
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com;
	h=X-YMail-OSG:Received:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-ID;
	b=dcolWhGHu6htms96biqIAuKDfxTkmBJmgvGSRQ04Ff3vhdhVsBlAk1TP/IlRRlJP9dD5LHIPHc+BnOAuN2idusJcMkcro9BbJnd6i593frYHxxete01+iLv6s08pzpA60iEtXXGSbdctHWSM1H0MIDJAcM55Db2o++ljnPV8SmA=;
X-YMail-OSG: wzi4u5YVM1kZ2BusduWzZDRu2C0zPz0ltTz0WEGq
Received: from [85.212.45.2] by web30305.mail.mud.yahoo.com via HTTP;
	Wed, 28 Mar 2007 07:00:29 PDT
Date: Wed, 28 Mar 2007 07:00:29 -0700 (PDT)
From: "R. B. Riddick" <arne_woerner@yahoo.com>
To: "Szabó" "Péter" <matyee@mail.alba.hu>, freebsd-geom@freebsd.org
In-Reply-To: <009601c7713f$6b9f2a60$6502a8c0@peteruj>
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: 8bit
Message-ID: <299130.71872.qm@web30305.mail.mud.yahoo.com>
Cc: 
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
	<freebsd-geom.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-geom>,
	<mailto:freebsd-geom-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-geom>
List-Post: <mailto:freebsd-geom@freebsd.org>
List-Help: <mailto:freebsd-geom-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-geom>,
	<mailto:freebsd-geom-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 28 Mar 2007 14:00:31 -0000

Eric wrote:
>>>         inside:        102400 kbytes in   3.416896 sec =    29969
kbytes/sec
>>>
>> Looks slow...
>
> You think so?  I think that's pretty acceptable for a UDMA100 device.
>
Yup... I thought, it was 2MB/sec... Dont know why... 29-55 is good...

--- Szabó Péter <matyee@mail.alba.hu> wrote:

> > And what if u try this:
> > dd if=/dev/raid3/... of=/dev/null bs=1m count=128
> > ?
> 
> #dd if=/dev/raid3/nmivol of=/dev/null bs=1m count=128
> 128+0 records in
> 128+0 records out
> 134217728 bytes transferred in 1.555843 secs (86266891 bytes/sec)
>
OK

> > 8KB/transfer is a little low for my taste... Looks like ur copy program 
> > uses
> > 32KB transfers, instead of 128KB transfers...
> 
> > What if u try
> > dd if=/source-file/on/raid3-device of=/dev/null bs=1m count=128
> > ?
> 
> dd if=/mnt/vol/site/video/Sissi_2-3/SISSI_2.ISO of=/dev/null bs=1m count=128
> 128+0 records in
> 128+0 records out
> 134217728 bytes transferred in 6.096775 secs (22014545 bytes/sec)
> 
Hmm...
It is still quite slow (the raw device can do about 80MB/sec)...
Is it better than with mc?
How was CPU-usage / system-load?

-Arne


 
____________________________________________________________________________________
Expecting? Get great news right away with email Auto-Check. 
Try the Yahoo! Mail Beta.
http://advision.webevents.yahoo.com/mailbeta/newmail_tools.html