I need a tip for page swapping monitoring...

[Andreas Ericsson]

Rejaine Monteiro wrote:
> Hi, 
> 
> How can I monitoring "page swapping" (not just "swap" or "memory") like
> in xosview on the "page" option? 
> 

If by page swapping you mean the amount of times the system hits a page 
fault (i.e. accesses the data on swap), I have no idea. I further have 
no idea of how to monitor the amount of time the system swaps pages to 
disk, although it should be easy enough to at least estimate with a bit 
of trickery (check swap partition usage with common intervals and see 
how much it grows/shrinks).

I must confess though that unless you're doing some serious voodoo 
coding involving kernel memory management and cache miss predicitions, I 
really don't see a use for it, and if you were I've got a feeling you 
wouldn't be asking these questions.

Usually it's enough to monitor the swap usage. When it grows to a 
certain amount it's time to do something about it, no matter how fast it 
got there.

-- 
Andreas Ericsson                   andreas.ericsson at op5.se
OP5 AB                             www.op5.se
Tel: +46 8-230225                  Fax: +46 8-230231


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