From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Peter Kirk Subject: Re: System goes very slow (was: Re: [linux-lvm] Test of LVM) Date: Sun, 27 May 2001 15:33:32 +0200 References: <01052614354500.00527@notch> <01052704562400.02599@notch> <3B10B023.E140C22E@loria.fr> In-Reply-To: <3B10B023.E140C22E@loria.fr> MIME-Version: 1.0 Message-Id: <01052715333200.00595@notch> Content-Transfer-Encoding: 8bit Sender: linux-lvm-admin@sistina.com Errors-To: linux-lvm-admin@sistina.com Reply-To: linux-lvm@sistina.com List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: List-Id: Content-Type: text/plain; charset="us-ascii" To: linux-lvm@sistina.com Am Sonntag, 27. Mai 2001 09:43 schrieben Sie: > > root@notch:/home/pwk > bonnie -s 1024MB > > Bonnie 1.2: File './Bonnie.2815', size: 1073741824, volumes: 1 > > Writing with putc()... done: 3270 kB/s 35.4 %CPU > > Rewriting... done: 1505 kB/s 19.3 %CPU > > Writing intelligently... done: 4682 kB/s 11.4 %CPU > > [I stopped bonnie here, do you need more output ?] > > Is DMA set on your harddrive ? (hdparm) > > DL Yes I thought it was enabled, until I checked. hda had it enabled, and hdb had not :-( Here is the new bonnie root@notch:/home/pwk > bonnie -s 512 Bonnie 1.2: File './Bonnie.651', size: 536870912, volumes: 1 Writing with putc()... done: 13874 kB/s 98.1 %CPU Rewriting... done: 10629 kB/s 6.0 %CPU Writing intelligently... done: 107497 kB/s 93.1 %CPU Reading with getc()... done: 11554 kB/s 75.6 %CPU Reading intelligently... done: 52766 kB/s 24.3 %CPU Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done... ---Sequential Output (nosync)--- ---Sequential Input-- --Rnd Seek- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --04k (03)-Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPUnotch 1* 512 13874 98.1107497 93.1 10629 6.0 11554 75.6 52766 24.3 279.6 1.0 So... is this appropriate for two fast disks ? 10MB/sec are much better, but I was thing of 40 or 50 MB/sec. Am I doing anything wrong ? pwk.linuxfan