[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

getrusage only partially working?

Subject: getrusage only partially working?
From: Mike Fischer <email@hidden>
Date: Tue, 11 Dec 2007 16:26:05 +0100
Delivered-to: email@hidden
Delivered-to: email@hidden

Hi!

For some reason I can't seem to get getrusage(2) to work the way I expect it to under 10.4.11 on a PPC G5 machine (haven't tested on other machines).

I expected the memory related fields to show values other than 0 which more or less correlate with the actual memory usage of the application. But what I am seeing is values of 0 only in each of these fields (ru_maxrss, ru_ixrss, ru_idrss, ru_isrss).

Probably I'm doing something wrong, but what?

Here is my call to getrusage:

#include <stdio.h>
#include <sys/time.h>
#include <sys/resource.h>

int main(int argc, const char *argv[])
{
    struct rusage   u;
    int             err = getrusage(RUSAGE_SELF,
                                    &u);

if (0 == err) { double ut = u.ru_utime.tv_sec + u.ru_utime.tv_usec / 1000000.0; double st = u.ru_stime.tv_sec + u.ru_stime.tv_usec / 1000000.0;

printf("ru_maxrss:0x%08x, ru_ixrss:0x%08x, ru_idrss:0x%08x, ru_isrss:0x%08x, user:%f s, system:%f s\n", u.ru_maxrss, u.ru_ixrss, u.ru_idrss, u.ru_isrss, ut, st); } else { printf("ERROR: getrusage() returned:%d\n", err); }

    return 0;
}

Compiled as a standard command line tool using Xcode 2.4.1 it outputs something like this:

ru_maxrss:0x00000000, ru_ixrss:0x00000000, ru_idrss:0x00000000, ru_isrss:0x00000000, user:0.129729 s, system:0.031769 s

If I call this in a loop which also allocates and writes to some memory I see the user and system times increase but the other values stay at 0.

Any ideas?


Thanks!
Mike
--
Mike Fischer         Softwareentwicklung, EDV-Beratung
                                    Schulung, Vertrieb
Web: <http://homepage.mac.com/mike_fischer/index.html>
Note:                 I read this list in digest mode!
          Send me a private copy for faster responses.

_______________________________________________
Do not post admin requests to the list. They will be ignored.
Darwin-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/darwin-dev/email@hidden

This email sent to email@hidden

Follow-Ups:
- Re: getrusage only partially working?
  - From: Terry Lambert <email@hidden>

Prev by Date: RE: rusage data for another process?
Next by Date: CFLite Leopard CF-476
Previous by thread: My exception handler can't work with 10.4 SDK on Leopar
Next by thread: Re: getrusage only partially working?
Index(es):
- Date
- Thread

Home