Paul Rubin <http> wrote:
> > is there a good way to know how much ram is used directly from
> > python (or should i rely on 'top' and other unix command?
>
> I think try resource.getrusage()
That should work (under BSD anyway) but unfortunately doesn't under
linux :-(
>From the man page
CONFORMING TO
SVr4, 4.3BSD. POSIX.1-2001 specifies getrusage(), but only specifies
the fields ru_utime and ru_stime.
and
The above struct was taken from 4.3BSD Reno. Not all fields are mean-
ingful under Linux. In linux 2.4 only the fields ru_utime, ru_stime,
ru_minflt, and ru_majflt are maintained. Since Linux 2.6, ru_nvcsw and
ru_nivcsw are also maintained.
Ie none of the memory based ones are filled in.
This linux only code works though :-
def memory_used():
"""Return the memory used by this process under linux in bytes"""
return int(file("/proc/self/statm").read().split()[0]) *
resource.getpagesize()
Eg
>>> import resource
>>> def memory_used():
... return int(file("/proc/self/statm").read().split()[0]) *
resource.getpagesize()
...
>>> print memory_used()
4575232
>>> a=10000000*"x"
>>> print memory_used()
14577664
>>>
If anyone knows a (unix) portable way of doing this I'd be interested!
--
Nick Craig-Wood <[EMAIL PROTECTED]> -- http://www.craig-wood.com/nick
--
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