On Sat Jun 19 09:44:25 EDT 2010, [email protected] wrote: > > note the extreme system time on the 16 processor machine > > kprof(3)
i'm not sure i completely trust kprof these days. there seems to be a lot of sampling error. the last time i tried to use it to get timing on esp, encryption didn't show up at all in kprof's output. trace(3) showed that encryption was 80% of the total cpu use. in any event, i was suspecting that ilock would be a big loser as nproc goes up, and it does appear to be. i'm less sure that runproc is really using 62% of the cpu c; kprof /386/9pccpu /dev/kpdata total: 70023 in kernel text: 65773 outside kernel text: 4250 KTZERO f0100000 ms % sym 40984 62.3 runproc 9930 15.0 ilock 5720 8.6 _cycles 4360 6.6 perfticks 1784 2.7 isaconfig 1600 2.4 iunlock cf. the 4 processor 5600 xeon: b; kprof /386/9pccpu /dev/kpdata total: 14416 in kernel text: 11434 outside kernel text: 2982 KTZERO f0100000 ms % sym 4036 35.2 rebalance 2483 21.7 runproc 1561 13.6 _cycles 918 8.0 perfticks 377 3.2 unlock 337 2.9 microdelay 259 2.2 idlehands - erik
