AIX

Hi friends

i have a query.

we have two p-series machine(p550 & p570) with HACMP 5.3 and AIX 5.3 hosting SAP.

Now i need to now is there a way or a command to check the memory utilization on these machines on daily basis. I have tried vmstat and iostat but still it's not clear.

We have 16 GB RAM.

please advice.

Regards,

Imran

vmstat is a very good choice. What is not clear on it's output?

Code:

svmon -G

might be a good choice too.

If you want more things being monitored you might want use nmon:
nmon performance: A free tool to analyze AIX and Linux performance

There is also a nice tool to convert the collected data to a website. The tool is called nmon2rrd.

It is not entirely clear what you mean by this. Unix variants, including AIX, try to use memory as efficiently as possible. This implies the usage of as much memory as possible - for loaded programs as necessary and as cache (for disk and network I/O) if no program claims it. (Basically - the reality is a bit more complicated, but that's the bottom line).

This is the reason why "free memory" is a problematic question: the correct answer is "near to nothing" almost any time, but that doesn't mean that no more memory is available for programs if one should be started. You might want to read this post, which gives also some links to further reads, you might also want to read this thread for some pointers.

I hope this helps.

bakunin

many thanks bakunin and zaxxon for your help and advice.