Output of "ps" command

nima0102 · 12-06-2009, 12:46 PM

Hi
Thanks for your sharing your experience
I have confused on fields "VSZ","%MEM" and "RSS" In output of "ps -aux" command, what differences are between these parameters ?

Thanks in advance

btmiller · 12-06-2009, 12:58 PM

Did you look at "man ps" -- it has the answers to your questions.

VSZ: Vsize -- virtual memory size of the process
RSS: Resident set size -- amount of the processes memory space that's actually mapped to physical memory
%MEM: percentage of physical memory used by the RSS, i.e. RSS/TotalMemory

Seriously, check the man pages -- this information is documented!

nima0102 · 12-07-2009, 04:27 AM

Quote:

Originally Posted by btmiller

Did you look at "man ps" -- it has the answers to your questions.

VSZ: Vsize -- virtual memory size of the process
RSS: Resident set size -- amount of the processes memory space that's actually mapped to physical memory
%MEM: percentage of physical memory used by the RSS, i.e. RSS/TotalMemory

Seriously, check the man pages -- this information is documented!

Thanks for your reply
Why amount of VSZ in most of time is more than RSS ??

Thanks in advance