Re: [perf-discuss] prstat consuming 100% sys

2009-06-18 Thread Chad Mynhier
On Thu, Jun 18, 2009 at 5:37 AM, Mikael Kjerrman wrote: > Thanks for the help. > BTW this is what I see, [ ... ] >              genunix`rm_assize+0xa0 >              procfs`prgetpsinfo+0x3d0 >              procfs`pr_read_psinfo+0x38 >              genunix`fop_read+0x20 >              genunix`pread+

Re: [perf-discuss] prstat consuming 100% sys

2009-06-18 Thread Mikael Kjerrman
Thanks for the help. BTW this is what I see, genunix`avl_walk+0x48 genunix`vmu_calculate_proc+0x294 genunix`vmu_calculate+0xf8 genunix`vm_getusage+0x24c unix`syscall_trap+0xac 17 genunix`vmu_calcul

Re: [perf-discuss] prstat consuming 100% sys

2009-06-17 Thread Chad Mynhier
On Wed, Jun 17, 2009 at 11:03 AM, Mikael Kjerrman wrote: > Hi, > > by accident I observed that various CPU on a rather heavily loaded Oracle > server sometimes consumed 100% sys > and apparently this was caused by prstat. > >   PID USERNAME USR SYS TRP TFL DFL LCK SLP LAT VCX ICX SCL SIG PROCESS/L

Re: [perf-discuss] prstat consuming 100% sys

2009-06-17 Thread David . Valin
This is due to various issues within /proc and other kernel process management locks. The only thing I can say at this time is avoid numerous prstat/top commands running all at once.A couple will not hurt you, but numerous prstat/top commands running at the same time can result in severe ke