Re: Memory usage on debian
On Sat, Jan 25, 2003 at 05:18:46PM -0500, Jason McCarty wrote:
> > Well, it does :) What is the difference between 'cached' and
> > 'buffers'? I wanted to know that since long, but never found out.
>
> Well, after digging through the kernel sources (such fun!), I think I
> figured that out. "cached" is files that have been read from disk, but
> aren't currently opened by any processes. "buffers" is the same, except
> it counts opened files instead.
Thanks for the info! Do files contributing to buffers contribute to
cache at the same time?
> > What wonders me it the memory usage of Xfree86. It seems that with
> > 492 root 7 -10 560M 15M 836 S < 0.0 3.1 219:38 XFree86
>
> Hmm, I would guess that the actual memory X is using is SIZE-512, so the
> actual usage would be 48M.
This would make a negative number of memory usage shortly after
starting the X server :)
> I have a 64MB video card, and X maps it as 4 times the actual size,
> so that my SIZE is 270M, but X really only uses 14M.
This would explain a lot! My card has afair 128 MB, accounted as 512
MB plus 15 MB adds up to 527 --- plus some other memory actually used,
but swapped out, plus maybe a little memory due to leaks.
> That doesn't mean X doesn't leak, of course ;-) The problem might
> just be that resource leaks in X programs cause memory leaks in the
> X server.
Hm, they shouldn't do that ...
GH
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