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POIs getrusage broken in Linux (2.6.30)
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  1. POIs getrusage broken in Linux (2.6.30)
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    copied!<p>This code </p> <pre><code> void print_usage(char * msg) { struct rusage usage; getrusage(RUSAGE_SELF, &amp;usage); printf("Limits: %s\n", msg); printf(" %s, %li\n", " maximum resident set size " , usage.ru_maxrss ); printf(" %s, %li\n", " integral shared memory size " , usage.ru_ixrss ); printf(" %s, %li\n", " integral unshared data size " , usage.ru_idrss ); printf(" %s, %li\n", " integral unshared stack size " , usage.ru_isrss ); printf(" %s, %li\n", " page reclaims " , usage.ru_minflt ); printf(" %s, %li\n", " page faults " , usage.ru_majflt ); printf(" %s, %li\n", " swaps " , usage.ru_nswap ); printf(" %s, %li\n", " block input operations " , usage.ru_inblock ); printf(" %s, %li\n", " block output operations " , usage.ru_oublock ); printf(" %s, %li\n", " messages sent " , usage.ru_msgsnd ); printf(" %s, %li\n", " messages received " , usage.ru_msgrcv ); printf(" %s, %li\n", " signals received " , usage.ru_nsignals); printf(" %s, %li\n", " voluntary context switches " , usage.ru_nvcsw ); printf(" %s, %li\n", " involuntary context switches " , usage.ru_nivcsw ); } </code></pre> <p>reports only zeroes for many fields, even if I use it in rather big program (after jvm start)</p> <pre><code> maximum resident set size , 0 integral shared memory size , 0 integral unshared data size , 0 integral unshared stack size , 0 page reclaims , 2514 page faults , 0 swaps , 0 block input operations , 0 block output operations , 0 messages sent , 0 messages received , 0 signals received , 0 voluntary context switches , 137 involuntary context switches , 1 </code></pre> <p>The non-zero fields are "<code>*vcsw</code>", "<code>*flt</code>".</p> <p>All <code>*rss</code>, <code>*swap</code>, <code>msg*</code>, <code>*block</code>, <code>*signals</code> are Zero.</p> <p>Is there something broken?</p> <p>Linux is x86 2.6.30.</p>
 

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