Real TIme Process Memory Usage

[Kevin McNamara_1]

I need to monitor process memory usage in real time. What command can I use to display the amount of memory a proces is currently using?

[Sundar_7]

Glance if you have it installed and license.

# glance (or gpm)

[Marco A.]

the command "top" also has a good view of the memory usage and processes running.

#top

Marco

[A. Clay Stephenson · Accepted solution]

If you don't have Glance then all you need is ps with the XPG4 behavior asserted.

Determine the process PID of interest using ps in the normal fashion then:

UNIX95=1 ps -p PID -o comm,vsz,etime

[Jaime Bolanos Rojas.]

Kevin,

Also this thread talks about process memory
usage, please check it as it looks very helpful too:

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=838754&admit=-682735245+1176998017125+28353475

Regards,

Jaime.

[Kevin McNamara_1]

Thanks for all the replies. I like the "UNIX95 ps" command. I can use this in a script. But, the VSZ that it reports does not match the RSS column (This consists of text, data, stack, as well as the process memory) in Glance. How can I get the "UNIX95 ps" command to report the RSS value from Glance?

[A. Clay Stephenson]

Asking ps to give you the same values as a sophisticated tool like Glance isn't all that realistic. It is very difficult to decide just what per-process memory usage means. How does shared memory count? How about shared text? In any event, since you have Glance, you can use the command-line interface (-adviser-only option) and get whatever metrics you are interested in. A search should turn up tons of examples.

[Don Morris_1]

Setting aside differences in precision between Glance vs. pstat [which is where ps gets the data], one big reason for a discrepancy here is that you want SZ from ps (physical memory size) if you're comparing RSS.. not VSZ (virtual memory size).

[Kevin McNamara_1]

Thanks again for the great info. I think using the advisor_only feature of Glance is going to do the trick.