Re: 2.6.1-rc1 [resend]
From: Paolo Ornati (ornati_at_lycos.it)
Date: 12/31/03
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To: William Lee Irwin III <wli@holomorphy.com> Date: Wed, 31 Dec 2003 16:45:23 +0100
On Wednesday 31 December 2003 16:20, you wrote:
> On Wednesday 31 December 2003 16:06, you wrote:
> >> What io scheduler are you using? Or, could you post /var/log/dmesg?
>
> On Wed, Dec 31, 2003 at 04:19:27PM +0100, Paolo Ornati wrote:
> > "dmesg" and "config" attached.
>
> Could you try this with elevator=deadline?
ok, I have just tried...
I don't see any big difference.
The output of this script:
_________________________________________________
#!/bin/bash
echo "HD test for linux `uname -r`"
echo
ra=8
for i in `seq 7`; do
echo "READAHEAD = $ra";
hdparm -a $ra /dev/hda;
for j in `seq 3`; do
hdparm -t /dev/hda;
done;
ra=$(($ra*2));
done
_________________________________________________
is:
_________________________________________________
HD test for linux 2.6.1-rc1
READAHEAD = 8
/dev/hda:
setting fs readahead to 8
readahead = 8 (on)
/dev/hda:
Timing buffered disk reads: 64 MB in 4.79 seconds = 13.37 MB/sec
/dev/hda:
Timing buffered disk reads: 64 MB in 4.79 seconds = 13.36 MB/sec
/dev/hda:
Timing buffered disk reads: 64 MB in 4.79 seconds = 13.37 MB/sec
READAHEAD = 16
/dev/hda:
setting fs readahead to 16
readahead = 16 (on)
/dev/hda:
Timing buffered disk reads: 64 MB in 2.48 seconds = 25.80 MB/sec
/dev/hda:
Timing buffered disk reads: 64 MB in 2.45 seconds = 26.14 MB/sec
/dev/hda:
Timing buffered disk reads: 64 MB in 2.43 seconds = 26.30 MB/sec
READAHEAD = 32
/dev/hda:
setting fs readahead to 32
readahead = 32 (on)
/dev/hda:
Timing buffered disk reads: 64 MB in 2.44 seconds = 26.23 MB/sec
/dev/hda:
Timing buffered disk reads: 64 MB in 2.43 seconds = 26.32 MB/sec
/dev/hda:
Timing buffered disk reads: 64 MB in 2.44 seconds = 26.27 MB/sec
READAHEAD = 64
/dev/hda:
setting fs readahead to 64
readahead = 64 (on)
/dev/hda:
Timing buffered disk reads: 64 MB in 2.43 seconds = 26.38 MB/sec
/dev/hda:
Timing buffered disk reads: 64 MB in 2.44 seconds = 26.27 MB/sec
/dev/hda:
Timing buffered disk reads: 64 MB in 2.43 seconds = 26.36 MB/sec
READAHEAD = 128
/dev/hda:
setting fs readahead to 128
readahead = 128 (on)
/dev/hda:
Timing buffered disk reads: 64 MB in 2.43 seconds = 26.33 MB/sec
/dev/hda:
Timing buffered disk reads: 64 MB in 2.44 seconds = 26.20 MB/sec
/dev/hda:
Timing buffered disk reads: 64 MB in 2.42 seconds = 26.40 MB/sec
READAHEAD = 256
/dev/hda:
setting fs readahead to 256
readahead = 256 (on)
/dev/hda:
Timing buffered disk reads: 64 MB in 2.41 seconds = 26.56 MB/sec
/dev/hda:
Timing buffered disk reads: 64 MB in 2.41 seconds = 26.55 MB/sec
/dev/hda:
Timing buffered disk reads: 64 MB in 2.41 seconds = 26.54 MB/sec
READAHEAD = 512
/dev/hda:
setting fs readahead to 512
readahead = 512 (on)
/dev/hda:
Timing buffered disk reads: 64 MB in 2.41 seconds = 26.52 MB/sec
/dev/hda:
Timing buffered disk reads: 64 MB in 2.40 seconds = 26.67 MB/sec
/dev/hda:
Timing buffered disk reads: 64 MB in 2.41 seconds = 26.54 MB/sec
_________________________________________________
>
>
> -- wli
-- Paolo Ornati Linux v2.6.1-rc1 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
- Previous message: Andreas Haumer: "Re: Linux 2.4.24-pre3"
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