high memory usage fedora 3

[sid]

Thanks guys... i can see that even when the memory usage is 95%...my
system shows no performance hit...confirming what you said and what the
link suggested by Chris says... nice work by linux..:).. 

On Fri, 2005-05-13 at 10:42 +0100, Nigel Wade wrote:

> sid wrote:
> > Hi..
> > I am new to linux. I recently installed fedora 3 on my laptop (Dell
> > latitude D600, 1.6 Ghz, 1 GB RAM and 1 GB swap).This a scenario that i
> > face. i login into my system for about 30-40 minutes working with
> > eclipse java ide, evolution, a couple of terminals and one or two other
> > programs. The memory usage shoots to 90%...i close all applications. and
> > open just one terminal to run top. I still see more than 70% memory
> > usage. Why is this. Is there a problem with my installation or do you
> > guys face the same problem?
> > The partial output of top after I have closed all applications is given
> > below. I have used x and M to sort by memory usage  to show you the
> > processes using significant memory. Plz help...
> > thanks
> > Sid
> > 
> > Tasks:  84 total,   1 running,  83 sleeping,   0 stopped,   0 zombie
> > Cpu(s):  0.7% us,  0.3% sy,  0.0% ni, 98.7% id,  0.0% wa,  0.3% hi,
> > 0.0% si
> > Mem:   1035268k total,   702652k used,   332616k free,    33816k buffers
> > Swap:  1108444k total,        0k used,  1108444k free,   419888k cached
> 
> The "419888k cached" is the important figure. This tells you that the system 
> currently has 400MB of physical memory being used for caching the 
> filesystem, thus greatly reducing the latency of filesystem access (if the 
> file is in the cache).
> 
> This is a Good Thing.
> 
> If the memory being used for the cache is needed for running programs it 
> will be released.
> 
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