RE: Question about free/used memory on Linux

["Ravinandan Arakali (rarakali)" <rarakali@cisco.com>]

Thanks Padraig.

Any idea how to get the size of running linux kernel ?

Ravi 

-----Original Message-----
From: Pádraig Brady [mailto:P@draigBrady.com] 
Sent: Wednesday, November 14, 2007 3:58 AM
To: Ravinandan Arakali (rarakali)
Cc: Vaidyanathan Srinivasan; Linux Kernel
Subject: Re: Question about free/used memory on Linux

Ravinandan Arakali (rarakali) wrote:
> Hi Vaidy,
> What do you think is the right way to get the memory usage of a 
> process, I mean the actual physical memory used ? Basically, I'm 
> interested in the incremental cost of a process, which means, I don't 
> want to include the text segments of shared libraries which would 
> remain even after the process is killed (since it would be used by 
> other processes).
> 
> Is the RSS field of "ps aux" command the right one or use "pmap" 
> command and look at the "writeable" segments ?

I already commented on this thread with a python script for reporting RAM usage for programs.

RSS = Private and Shared Resident pages.
You can get the shared value for a process from /proc/$$/smaps (as is done in the script)

Pádraig.
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