Messages in this thread | | | Date | Fri, 9 Jan 2004 11:44:37 -0800 | From | Andrew Morton <> | Subject | Re: Strange IDE performance change in 2.6.1-rc1 (again) |
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Ram Pai <linuxram@us.ibm.com> wrote: > > 1) see whether you see a regression with files replacing the > cat command in your script with > dd if=big_file of=/dev/null bs=1M count=256
You'll need to unmount and remount the fs in between to remove the file from pagecache. Or use fadvise() to remove the pagecache. There's a little tool which does that in
http://www.zip.com.au/~akpm/linux/patches/stuff/ext3-tools.tar.gz
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