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SubjectRe: Buffered I/O slowness
Jesse Barnes <jbarnes@engr.sgi.com> wrote:
>
> > I'm not sure that we know what's going on yet. I certainly don't. The
> > above numbers look good, so what's the problem???
>
> The numbers are ~1/3 of what the machine is capable of with direct I/O.

Are there CPU cycles to spare? If you have just one CPU copying 1GB/sec
out of pagecache, maybe it is pegged?
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