From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robin Bowes Subject: Re: non-optimal RAID 5 performance with 8 drive array Date: Tue, 01 Mar 2005 18:12:06 +0000 Message-ID: References: <42246D1F.3070407@variant.ch> <6.2.1.2.2.20050301190313.053f5d60@mail.tekno-soft.it> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit In-Reply-To: <6.2.1.2.2.20050301190313.053f5d60@mail.tekno-soft.it> Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Roberto Fichera wrote: > At 18.53 01/03/2005, Robin Bowes wrote: >> [root@dude test]# dd if=/dev/zero of=/home/test/test.tmp bs=4096 >> count=100000 >> 100000+0 records in >> 100000+0 records out >> >> Notice there is no timing information. > > you have to use: > > time dd if=/dev/zero of=/home/test/test.tmp bs=4096 count=100000 Robert, That's not what I meant - I know I can use "time" to get CPU usage information. I was meaning that I don't get the disk speed summary like Nicola did, e.g.: me@beast:$ dd if=/dev/zero of=/storagearray/test.tmp bs=4096 1238865+0 records in 1238864+0 records out 5074386944 bytes transferred in 63.475536 seconds (79942404 bytes/sec) R. -- http://robinbowes.com