Messages in this thread | | | Date | Wed, 31 Dec 2003 07:06:07 -0800 | From | William Lee Irwin III <> | Subject | Re: 2.6.1-rc1 [resend] |
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On Wed, Dec 31, 2003 at 04:00:07PM +0100, Paolo Ornati wrote: > With 2.6.1-rc1 I have noticed a strange IDE performance change. > Results of "hdparm -t /dev/hda" with 2.6.0 kernel: > (readahead = 256): ~26.31 MB/s > (readahead = 128): ~31.82 MB/s > PS = readahead is set to 256 by default on my system, 128 seems to be the > best value > Results of "hdparm -t /dev/hda" with 2.6.1-rc1 kernel: > (readahead = 256): ~26.41 MB/s > (readahead = 128): ~26.27 MB/s > Setting readahead to 128 doesn't have the same effect with the new kernel...
What io scheduler are you using? Or, could you post /var/log/dmesg?
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