distr/util/cpu_stats.c

   1 /* LINTLIBRARY */
   2
   3 #include "util.h"
   4
   5
   6 #ifdef BSD
   7 #include <sys/types.h>
   8 #include <sys/time.h>
   9 #include <sys/resource.h>
  10
  11 #if defined(_IBMR2)
  12 #define etext _etext
  13 #define edata _edata
  14 #define end _end
  15 #endif
  16
  17 extern int end, etext, edata;
  18
  19 #endif
  20
  21 void
  22 util_print_cpu_stats(FILE *fp)
  23 {
  24 #ifdef BSD
  25     struct rusage rusage;
  26     struct rlimit rlp;
  27     long text, data, vm_limit, vm_soft_limit;
  28     double user, system, scale;
  29     char hostname[257];
  30     long vm_text, vm_init_data, vm_uninit_data, vm_sbrk_data;
  31
  32     /* Get the hostname */
  33     (void) gethostname(hostname, 256);
  34     hostname[256] = '\0';               /* just in case */
  35
  36     /* Get the virtual memory sizes */
  37     vm_text = (long) (((long) (&etext)) / 1024.0 + 0.5);
  38     vm_init_data = (long) (((long) (&edata) - (long) (&etext)) / 1024.0 + 0.5);
  39     vm_uninit_data = (long) (((long) (&end) - (long) (&edata)) / 1024.0 + 0.5);
  40     vm_sbrk_data = (long) (((long) sbrk(0) - (long) (&end)) / 1024.0 + 0.5);
  41
  42     /* Get virtual memory limits */
  43     (void) getrlimit(RLIMIT_DATA, &rlp);
  44     vm_limit = (long) (rlp.rlim_max / 1024.0 + 0.5);
  45     vm_soft_limit = (long) (rlp.rlim_cur / 1024.0 + 0.5);
  46
  47     /* Get usage stats */
  48     (void) getrusage(RUSAGE_SELF, &rusage);
  49     user = rusage.ru_utime.tv_sec + rusage.ru_utime.tv_usec/1.0e6;
  50     system = rusage.ru_stime.tv_sec + rusage.ru_stime.tv_usec/1.0e6;
  51     scale = (user + system)*100.0;
  52     if (scale == 0.0) scale = 0.001;
  53
  54     (void) fprintf(fp, "Runtime Statistics\n");
  55     (void) fprintf(fp, "------------------\n");
  56     (void) fprintf(fp, "Machine name: %s\n", hostname);
  57     (void) fprintf(fp, "User time   %6.1f seconds\n", user);
  58     (void) fprintf(fp, "System time %6.1f seconds\n\n", system);
  59
  60     text = (int) (rusage.ru_ixrss / scale + 0.5);
  61     data = (int) ((rusage.ru_idrss + rusage.ru_isrss) / scale + 0.5);
  62     (void) fprintf(fp, "Average resident text size       = %5ldK\n", text);
  63     (void) fprintf(fp, "Average resident data+stack size = %5ldK\n", data);
  64     (void) fprintf(fp, "Maximum resident size            = %5ldK\n\n",
  65         rusage.ru_maxrss/2);
  66     (void) fprintf(fp, "Virtual text size                = %5ldK\n",
  67         vm_text);
  68     (void) fprintf(fp, "Virtual data size                = %5ldK\n",
  69         vm_init_data + vm_uninit_data + vm_sbrk_data);
  70     (void) fprintf(fp, "    data size initialized        = %5ldK\n",
  71         vm_init_data);
  72     (void) fprintf(fp, "    data size uninitialized      = %5ldK\n",
  73         vm_uninit_data);
  74     (void) fprintf(fp, "    data size sbrk               = %5ldK\n",
  75         vm_sbrk_data);
  76     (void) fprintf(fp, "Virtual memory limit             = %5ldK (%ldK)\n\n",
  77         vm_soft_limit, vm_limit);
  78
  79     (void) fprintf(fp, "Major page faults = %ld\n", rusage.ru_majflt);
  80     (void) fprintf(fp, "Minor page faults = %ld\n", rusage.ru_minflt);
  81     (void) fprintf(fp, "Swaps = %ld\n", rusage.ru_nswap);
  82     (void) fprintf(fp, "Input blocks = %ld\n", rusage.ru_inblock);
  83     (void) fprintf(fp, "Output blocks = %ld\n", rusage.ru_oublock);
  84     (void) fprintf(fp, "Context switch (voluntary) = %ld\n", rusage.ru_nvcsw);
  85     (void) fprintf(fp, "Context switch (involuntary) = %ld\n", rusage.ru_nivcsw);
  86 #else
  87     (void) fprintf(fp, "Usage statistics not available\n");
  88 #endif
  89 }