topic Re: How much memory is really used in Operating System - HP-UX

How much memory is really used

Karen Shen_1 — Fri, 30 Nov 2007 11:31:17 GMT

my glance shows:
Total VM : 8.4gb Sys Mem : 10.6gb User Mem: 6.6gb Phys Mem : 40.0gb
Active VM: 3.6gb Buf Cache: 0mb Free Mem: 18.8gb FileCache: 4.1gb
about 53% memory was used. However, when I extract from measureware datafiles, it said 57% FREE.
Any idea why they are so much different and which one is telling the truth?

Re: How much memory is really used

Tim Nelson — Fri, 30 Nov 2007 11:39:57 GMT

Which metric are u using for the MWA extract ? As well as the sample average ?

I typically run into the issue where what I think is the right metric is not the same as displayed in Glance.

MWA can only drill down to 5min ave and glance is typically a 15sec. I would not expect memory to flux that much but, in order to compare you need to use all the same parmeters.

I can try and validate with my glance 4.5 install. It just might be wrong.
( like that never happens:)

Re: How much memory is really used

Geoff Wild — Fri, 30 Nov 2007 11:55:50 GMT

Try the memdetail program I posted here:

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1180482

Rgds...Geoff

Re: How much memory is really used

Karen Shen_1 — Fri, 30 Nov 2007 12:29:51 GMT

The metric I used was GBL_MEM_AVAIL.