On 30 Aug 2004, at 12:02, Kevin Philp wrote:
> The output from top now says:
>> mem 515636k
> used 248536k
> free 267100k
> buff 7412k
> swap 811240k
> used 0k
> cached 154144k
>> It seems the machine was just about using all of the original 256k.
> The above
> results were with OpenOffice loaded but no documents so we could
> easily have
> slipped into needing swap.
Yes, and as the box hasn't been up long you probably haven't consumed
memory with a bunch of other little things too.
Note that from the output of top above, the box has 267M free, but it
also has ~160M used for buffers and cache. If you still had only 256M
of memory, you'd be nearly out of free RAM, all else being equal. But
that 160M could be used for running programs. However, the 2.4 kernel
will start to use swap before it will reclaim those pages, and this
will lead to a perceived slowness. This behaviour AIUI can be
controlled in 2.6 with the 'swappiness' parameters via /proc.
Given the price of RAM now, 512M isn't a huge amount to have in a
desktop machine. I wonder how XP with Office XP, IE and Outlook behaves
with 256M of RAM? I don't have such a machine available to test, and I
don't really care, but I'm curious.
> I was also wondering if nfs was an issue. We export all the users home
> directories from a central server over a 100mb ethernet. I keep
> installed locally because of the size.
Well, a kernel using NFS will use a little more memory than one
without, but I doubt it's a whole lot.
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