From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262913AbTJTVHq (ORCPT ); Mon, 20 Oct 2003 17:07:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262914AbTJTVHq (ORCPT ); Mon, 20 Oct 2003 17:07:46 -0400 Received: from mail.gmx.net ([213.165.64.20]:16538 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S262913AbTJTVHl (ORCPT ); Mon, 20 Oct 2003 17:07:41 -0400 Date: Mon, 20 Oct 2003 23:07:40 +0200 (MEST) From: "Svetoslav Slavtchev" To: "Carlos Fernandez Sanz" Cc: Tomi.Orava@ncircle.nullnet.fi, linux-kernel@vger.kernel.org MIME-Version: 1.0 References: <001901c39734$8a2c2bb0$0514a8c0@HUSH> Subject: Re: HighPoint 374 X-Priority: 3 (Normal) X-Authenticated: #20183004 Message-ID: <31727.1066684060@www30.gmx.net> X-Mailer: WWW-Mail 1.6 (Global Message Exchange) X-Flags: 0001 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > BTW, isn't m0 supposed to reduce perfomance? hm here it also doesn't seem to change much, may be it's ignored if UDMA is used mem is 1024Mb [root@svetljo kernel]# hdparm -m0 /dev/hde /dev/hde: setting multcount to 0 multcount = 0 (off) [root@svetljo 1]# time dd if=/dev/zero of=10Gb.zeros count=20000 bs=512k 20000+0 records in 20000+0 records out 0.09user 29.38system 5:44.49elapsed 8%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (149major+40minor)pagefaults 0swaps [root@svetljo 1]# hdparm -m8 /dev/hde /dev/hde: setting multcount to 8 multcount = 8 (on) [root@svetljo 1]# time dd if=/dev/zero of=10Gb.zeros count=20000 bs=512k 20000+0 records in 20000+0 records out 0.10user 28.99system 5:50.44elapsed 8%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (150major+41minor)pagefaults 0swaps root@svetljo 1]# hdparm -m16 /dev/hde /dev/hde: setting multcount to 16 multcount = 16 (on) [root@svetljo 1]# time dd if=/dev/zero of=10Gb.zeros count=20000 bs=512k 20000+0 records in 20000+0 records out 0.09user 28.83system 5:53.57elapsed 8%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (165major+40minor)pagefaults 0swaps [root@svetljo 1]# > [root@fulanito wd1200jb]# time dd if=/dev/zero of=filling count=20000 > bs=65536 > 20000+0 records in > 20000+0 records out > > real 0m33.763s > user 0m0.200s > sys 0m10.920s > [root@fulanito wd1200jb]# hdparm -m4 /dev/hdk > > /dev/hdk: > setting multcount to 4 > multcount = 4 (on) > [root@fulanito wd1200jb]# time dd if=/dev/zero of=filling count=20000 > bs=65536 > 20000+0 records in > 20000+0 records out > > real 0m30.321s > user 0m0.150s > sys 0m10.630s > [root@fulanito wd1200jb]# hdparm -m0 /dev/hdk > > /dev/hdk: > setting multcount to 0 > multcount = 0 (off) > [root@fulanito wd1200jb]# time dd if=/dev/zero of=filling count=20000 > bs=65536 > 20000+0 records in > 20000+0 records out > > real 0m30.749s > user 0m0.130s > sys 0m10.900s > [root@fulanito wd1200jb]# -- NEU FÜR ALLE - GMX MediaCenter - für Fotos, Musik, Dateien... Fotoalbum, File Sharing, MMS, Multimedia-Gruß, GMX FotoService Jetzt kostenlos anmelden unter http://www.gmx.net +++ GMX - die erste Adresse für Mail, Message, More! +++