OK, I think I got it, please correct if I am wrong: Suppose I do [b]prstat -m 10[/b], suppose a given lwp is in state X at the beginning and transitions to state Y 4 seconds after the beginning of the monitoring sample and back to X 1 sec later.
If I am on Solaris9 then only state transition timestamps will be recorded (but not durations). Therefore when displaying the results: - only 5 sec will be attributed to state X (that is the second part from Y>X transition till the end of interval) - 1 sec will be attributed to state Y. This could happen to any state, but since cpu timeslices are relatively small USR/SYS will be the least affected and SLP will probably be the most affected by this. In general lwps that are mostly idle are more likely to have their SLP time under-reported. Am I correct? This message posted from opensolaris.org _______________________________________________ perf-discuss mailing list perf-discuss@opensolaris.org
