vtimes(3c)                 DG/UX 4.30                  vtimes(3c)



     NAME
          vtimes - get information about resource usage

     SYNOPSIS
          vtimes(parvm, chvm)
          struct vtimes *parvm, *chvm;

     DESCRIPTION
          Vtimes returns accounting information for the current
          process and for the terminated child processes of the
          current process.  Par_vm, ch_vm, or both may be 0, in which
          case only the information for non-zero pointers is returned.

          After the call, each buffer contains information as defined
          by the contents of the include file
          /usr/include/sys/vtimes.h:

          struct vtimes {
               int  vm_utime;      /* user time (*HZ) */
               int  vm_stime;      /* system time (*HZ) */

               /* divide next two by utime+stime to get averages */

               unsigned vm_idsrss;      /* integral of d+s rss */
               unsigned vm_ixrss;       /* integral of text rss */
               int  vm_maxrss;          /* maximum rss */
               int  vm_majflt;          /* major page faults */
               int  vm_minflt;          /* minor page faults */
               int  vm_nswap;      /* number of swaps */
               int  vm_inblk;      /* block reads */
               int  vm_oublk;      /* block writes */
          };

          The vm_utime and vm_stime fields give the user and system
          time, respectively, in 100ths of a second.  The vm_idrss and
          vm_ixrss measure memory usage.  They are computed by
          integrating the number of memory pages in use over CPU time.
          They are reported as though computed discretely, adding the
          current memory usage (in 2048 byte pages) each time the
          clock ticks.

          For example, if a process used five main memory pages over
          one CPU-second for its data and stack, then vm_idsrss would
          have the value 5*100, where vm_utime+vm_stime would be the
          100.  Vm_idsrss integrates data and stack segment usage,
          while vm_ixrss integrates text segment usage.  Vm_maxrss
          reports the maximum instantaneous sum of the text+data+stack
          core-resident page count.

          The vm_majflt field gives the number of page faults that
          resulted in disk activity; the vm_minflt field gives the
          number of page faults incurred in simulation of reference



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     vtimes(3c)                 DG/UX 4.30                  vtimes(3c)



          bits; vm_nswap is the number of swaps that occurred.  The
          number of file system input/output events are reported in
          vm_inblk and vm_oublk.  These numbers account only for real
          I/O; data supplied by the caching mechanism is charged only
          to the first process to read or write the data.

     SEE ALSO
          time(2), ftime(3C), wait3(2)















































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