Thanks, Zak!

Shae

On Apr 8, 2005 12:48 PM, Zak B. Elep <[EMAIL PROTECTED]> wrote:
> Shae Tan <[EMAIL PROTECTED]> writes:
> 
> > I don't understand this part. If my memory is not fully utilized, why
> > eat a part of the swap? I thought swap is only utilized when no
> > primary memory is available.
> 
> Actually, Linux gets to use a little swap when you load something that's
> large (maybe large enough to use up all physical memory) and not quite
> fully cached (as addressable memory shows). Here's my `top -b -n1 | head
> -5' now:
> 
> top - 00:41:29 up  1:37,  1 user,  load average: 0.16, 0.12, 0.15
> Tasks:  83 total,   2 running,  81 sleeping,   0 stopped,   0 zombie
> Cpu(s):  6.3% us,  1.0% sy,  0.2% ni, 86.2% id,  2.5% wa,  3.7% hi,  0.0% si
> Mem:    256376k total,   241368k used,    15008k free,     7788k buffers
> Swap:   289128k total,        8k used,   289120k free,    98952k cached
> 
> As you can see, I now have 8k of swap used, since I've loaded
> Firefox. Before, the number was larger (like 16k) because Firefox had to
> pull up GTK2; now, I have Emacs CVS built in GTK2, so the libs are
> cached.
> 
> Another factor is hard-on disk-CPU processing, like AIDE[1] scanning for
> spooks or wwwoffle[2] updating its caches and rebuilding the search db.
> 
> Footnotes:
> [1]  Advanced Intrusion Detection Environment, a file-checking system
> 
> [2]  This was the web-caching system I wrote in your earlier thread. It
>      can do keyword-based searching using external search engine
>      software such as htdig or namazu.

-- 
Shae
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