>Number:         30115
>Category:       kern
>Synopsis:       getrusage returns bogus ru_utime values
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon May 02 14:50:00 +0000 2005
>Originator:     john@iastate.edu
>Release:        NetBSD 1.6.1_STABLE
>Organization:
	Iowa State University
>Environment:
System: NetBSD netreg-2.ait.iastate.edu 1.6.1_STABLE NetBSD 1.6.1_STABLE (NETREG) #0: Mon May 10 14:59:57 CDT 2004 root@socrates.ait.iastate.edu:/tmp/compile/NETREG i386
Architecture: i386
Machine: i386
>Description:
	Two calls of getrusage surround a function which does some amount
	of work.  Sometimes the second call indicates that the process has
	used less user time (ru_utime) than was used before the function.
	For example the first call might return 0 seconds, 913842 usecs
        and then second call might later return 0 seconds, 913803 usecs
        which would seem to indicate that the function used the cpu for
	a negative 39 usecs.  This does not always happen, and I
	have never seen it happen in the system time (ru_stime)
>How-To-Repeat:
	several times, call getrusage() around a function that does
	some small amount of work.  See if the second call shows a
	lower value than the first in ru_stime.
>Fix: