Re: [BUG] 2.4 VM sucks. Again

Austin Gonyou
2002-05-24T17:30:11Z

On Fri, 2002-05-24 at 11:31, Martin J. Bligh wrote:
> >> I'm not sure exactly what Roy was doing, but we were taking a machine
> >> with 16Gb of RAM, and reading files into the page cache - I think we built up
> >> 8 million buffer_heads according to slabinfo ... on a P4 they're 128 bytes each,
> >> on a P3 96 bytes.
> >
> > The buffer heads one would make sense. I only test on realistic sized systems.
>
> Well, it'll still waste valuable memory there too, though you may not totally kill it.
>
> > Once you pass 4Gb there are so many problems its not worth using x86 in the
> > long run
>
I assume that you mean by "not worth using x86" you're referring to say,
degraded performance over other platforms? Well...if you talk
price/performance, using x86 is perfect in those terms since you can buy
more boxes and have a more fluid architecture, rather than building a
monolithic system. Monolithic systems aren't always the best. Just look
at Fermilab!

> Nah, we just haven't fixed them yet ;-)
>
> M.
>
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