Messages in this thread | | | Date | Fri, 31 Oct 2003 01:28:46 -0800 | From | Andrew Morton <> | Subject | Re: READAHEAD |
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age <ahuisman@cistron.nl> wrote: > > > Lots of people have been reporting this. It's rather weird. > > > > Is the same effect observable when reading a large file, or is it only > > observable via `hdparm -t'? > > > > Hi Andrew, > > Here are some tests with bonnie++.
Like so many of these things, bonnie++ is generally far, far too complex for kernel performance tuning.
Please, just use time, cat, dd, etc.
mount /dev/xxx /mnt/yyy dd if=/dev/zero of=/mnt/yyy/x bs=1M count=1024 umount /dev/xxx mount /dev/xxx /mnt/yyy time cat /mnt/yyy/x > /dev/null
nice'n'easy.
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