swap logs

[aixchild]

Where can I check swap was high on a server with regards system logs ?

thanks

 

[p5wizard]

Check if you have /etc/perf/daily logfiles (xmwlm or topas). They're binary files so you'll need the topasout utility to convert to readable perf data files.

See man page for topasout.

HTH,

p5wizard

 

[aixchild]

thanks wizard.

now here's a follow on question, which may be I should have asked before.

Is swapping (a generic term I know) for memory (lsps) or, can it apply to disk ?

I've been asked by a senior as part of my learning, but I can't make sense of stuff I've found.

thanks again

 

[khalidaaa]

Swap space is an area on disk that temporarily holds a process memory image. When physical memory demand is sufficiently low, process memory images are brought back into physical memory from the swap area on disk. Having sufficient swap space enables the system to keep some physical memory free at all times.

So it applies to disk but not directly! The disk is being used for MEMORY swapping!

Have a look here:

http://docs.hp.com/en/B2355-90672/ch06s02.html

It talks about virtual memory concepts.

Other places:

http://www.google.com.bh/search?hl=...a0u4jHAQ&sa=X&oi=glossary_definition&ct=title

Regards,
Khalid