Re: md faster than h/w?

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--- Max Waterman
<davidmaxwaterman+gmane@xxxxxxxxxxxxxx> wrote:
> Of course, bonnie++ only works on mounted devices,
> but gives me
> reasonable (but not great) numbers (130MB/s) which
> don't seem to vary
> too much with the kernel version.

Out of curiosity, have you compared bonnie++ results
with and without -f (fast)?

I've found that it seems to report x2 read throughput
without -f. Perhaps it "warms up" the drive with
putc() and getc(), allowing the kernel and/or cache to
do its job?

I haven't found a benchmark that is 100%
reliable/comparable. Of course, it all depends how the
drive is used in production, which may have little
correlation with the benchmarks...

Andargor


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