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Subject[OT] Re: ide drives performance issues, maybe related with buffer cache.
John Newbie wrote:
> I've read them, see my previous posts. If you have nothing to say,
> better stay silent.
> Ok, have a look at 2.6-test2, the same picture, slightly faster, though.
> And 2.6 by default set unmaskirq to 1.
> IO is really bursty (see post by insecure) opposite to `enemy I`.

If you are really newbie in Linux - I can advice you to try FreeBSD.
By default FreeBSD (as of version 3.2) is much less aggressive in
caching and buffering. I never saw Linux greedy caching/buffering
working good - it always has some stupid edge cases when it is
easier/faster to power-off/power-on/fsck system, rather than to get to
console and kill offending process.
But sure - Linux's throughput is much higher that in *BSD.

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