On Mon, 28 Jun 1999 09:24:06 -0700 (PDT), Matthew Jacob
<mjacob@feral.com> said:
>> On Sat, 26 Jun 1999 00:06:53 -0400, Douglas Gilbert
>> Given that we have clocked reasonably standard i386 hardware with fast
>> disks at 50 or 60 MB/sec through the filesystem, I doubt that the
>> indirect IO is the bottleneck in those cases.
> Without cache pollution?
Page cache pollution is a totally different issue. At 60MB/sec
we aren't even close to the performance levels where memory bandwidth
is an issue, so extra copies into the cache are irrelevant from a
bandwidth point of view. Of _course_ raw IO has less impact on
memory, but that's another point entirely.
--Stephen
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