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On 06/19/2012 05:34 AM, Christopher R Webber wrote:
> All,
>
> I have students and postdocs that write software as part of their
> research and occasionally they want to answer questions like: - How
> much memory does this take? - How much time does this take? - What
> does CPU utilization look like?
>
> To add to the list above, I would love to see I/O statistics as
> well. Any suggestions on a command line profiling tool for linux
> that will do this? While most of my users are savy enough to use
> the command line, I would like to see something where you don't
> have to understand a whole lot of details to get some basic info.
>
> Ideas?
There's a few tools I'll use:
* "strace -c" - quick & dirty histogram of system calls, providing
number of calls and time spent in each one
* "ltrace -c" - Same as "strace -c", but for library calls
* /proc/<pid> - Lots of information available here, including I/O
statistics, scheduler and memory information, and CPU usage
* gprof - Useful if you have the source code or if the binary is
already built with profiling ("-pg" if you're using gcc), this will
give a call graph and other profiling information
Skylar
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