Messages in this thread | ![/](/images/icornerl.gif) | | From | Paolo Ornati <> | Subject | Re: 2.6.1-rc1 [resend] | Date | Wed, 31 Dec 2003 16:45:23 +0100 |
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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
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