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SubjectRe: READAHEAD
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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