ultrix man page for vtimes

vtimes(3)						     Library Functions Manual							 vtimes(3)

Name
       vtimes - get information about resource utilization

Syntax
       vtimes(par_vm, ch_vm)
       struct vtimes *par_vm, *ch_vm;

Description
       This facility has been superseded by

       The  routine  returns accounting information for the current process and for the terminated child processes of the current process.  Either
       par_vm or ch_vm or both may be 0, in which case only the information for the pointers which are non-zero 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 60ths of a second (or 50ths if that is the frequency of wall
       current	in your locality.) The vm_idrss and vm_ixrss measure memory usage.  They are computed by integrating the number of memory pages in
       use each over cpu time.	They are reported as though computed discretely, adding the current memory usage (in 512 byte pages) each time the
       clock  ticks.   If  a  process  used 5 core pages over 1 cpu-second for its data and stack, then vm_idsrss would have the value 5*60, where
       vm_utime+vm_stime would be the 60. The vm_idsrss integrates data and stack segment usage, while vm_ixrss  integrates  text  segment  usage.
       The 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 which resulted in disk activity; the vm_minflt field gives the number of page faults
       incurred in simulation of reference bits; vm_nswap is the number of swaps which 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
       wait3(2), time(3)

																	 vtimes(3)