CPU and memory usage??

msmeenamani · 02-21-2009, 11:40 PM

Can any one suggest a profiler or a command to get the exact cpu and memory usage of the system?? Some suggest valgrind, but i need the output in text format whereas valgrind displays it in graphical mode..

syg00 · 02-21-2009, 11:45 PM

Define "exact"

msmeenamani · 02-22-2009, 12:54 AM

exact in the sense that ps command will only get the amount of memory pages allocated by that process,does not reflect the actual amount of memory used by the application. I need something tat gives the actual memory used by the process.

syg00 · 02-22-2009, 01:49 AM

Meaning what ??? Way too nebulous.
Have a look at pmap, /proc/<pid>/maps and probably most useful /proc/<pid>/smaps

But the way shared libraries are (not) accounted for in Linux, all the numbers you can come up with will be fuzzy. Exact ain't a description I'd be using in any sense of the word.