"Simon Bryan" <[EMAIL PROTECTED]> writes:

> HI all, I was just looking at the memory usage on my LTSP server and
> it was running at 98%!  Which seemed excessive, given that there is
> no-one actually at work, and there were maybe one or two terminals
> still switched on. So using the 'Windows Principle', I

Chances are there was no problem. The kernel uses any memory that
applications, etc, aren't using for caching files, etc. It leaves a
small percentage of memory unused so when new processes start there's
memory available for them. If the unused memory gets a bit low it
shrinks the cache a bit. And if a few processes exit and the
unused memory gets a bit large, it lets the cache grow a bit.

There's been a few discussions here before, you might like to have a
look at the archives for more details. There's some analysis of the
output of the "free" command, for instance. 

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