From: "Svetoslav Slavtchev" <svetljo@gmx.de>
To: "Carlos Fernandez Sanz" <cfs-lk@nisupu.com>
Cc: Tomi.Orava@ncircle.nullnet.fi, linux-kernel@vger.kernel.org
Subject: Re: HighPoint 374
Date: Mon, 20 Oct 2003 23:07:40 +0200 (MEST) [thread overview]
Message-ID: <31727.1066684060@www30.gmx.net> (raw)
In-Reply-To: 001901c39734$8a2c2bb0$0514a8c0@HUSH
> 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]#
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next prev parent reply other threads:[~2003-10-20 21:07 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-19 19:57 HighPoint 374 Svetoslav Slavtchev
2003-10-19 20:30 ` Andre Hedrick
2003-10-19 20:46 ` Svetoslav Slavtchev
2003-10-19 20:51 ` Bartlomiej Zolnierkiewicz
2003-10-19 20:54 ` Svetoslav Slavtchev
2003-10-20 6:48 ` Jens Axboe
2003-10-20 7:43 ` Tomi Orava
2003-10-20 8:10 ` Svetoslav Slavtchev
2003-10-20 8:21 ` Nick Piggin
2003-10-20 8:30 ` Svetoslav Slavtchev
2003-10-19 21:51 ` Tomi Orava
2003-10-19 22:00 ` Svetoslav Slavtchev
2003-10-19 22:11 ` Svetoslav Slavtchev
2003-10-19 22:24 ` Tomi Orava
2003-10-20 7:53 ` Svetoslav Slavtchev
2003-10-20 8:03 ` Tomi Orava
2003-10-20 9:03 ` Svetoslav Slavtchev
2003-10-20 17:02 ` Carlos Fernandez Sanz
2003-10-20 19:14 ` Svetoslav Slavtchev
2003-10-20 20:23 ` Carlos Fernandez Sanz
2003-10-20 21:07 ` Svetoslav Slavtchev [this message]
2003-10-20 21:25 ` Bartlomiej Zolnierkiewicz
2003-10-20 21:25 ` Svetoslav Slavtchev
2003-10-21 18:43 ` Tomi Orava
2003-10-21 18:50 ` Tomi Orava
-- strict thread matches above, loose matches on Subject: below --
2003-10-21 9:23 Jindrich Makovicka
2003-10-21 16:59 ` Tomi Orava
2003-10-19 19:42 Christian Guggenberger
2003-10-19 19:54 ` Tomi Orava
2003-10-18 9:44 Carlos Fernandez Sanz
2003-10-18 10:15 ` Måns Rullgård
2003-10-19 12:13 ` Tomi Orava
2003-10-19 16:48 ` Carlos Fernandez Sanz
2003-10-19 17:16 ` Tomi Orava
2003-10-19 17:39 ` Carlos Fernandez Sanz
2003-10-19 19:27 ` Tomi Orava
2003-10-19 19:35 ` Carlos Fernandez Sanz
2003-10-19 15:59 ` Joel Smith
2003-10-19 17:24 ` Tomi Orava
2003-10-19 17:42 ` Måns Rullgård
2003-10-19 19:14 ` Tomi Orava
2003-10-19 19:27 ` Carlos Fernandez Sanz
2003-10-19 19:39 ` Tomi Orava
2003-10-19 20:12 ` Carlos Fernandez Sanz
2003-10-19 19:39 ` Måns Rullgård
2003-10-19 19:54 ` David B. Stevens
2003-10-20 8:38 ` Geller Sandor
2003-10-19 21:12 ` Joel Smith
2003-10-19 17:28 ` Carlos Fernandez Sanz
2003-10-19 21:35 ` Joel Smith
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