Re: [perf-discuss] CPU fluctuations issue

2009-01-09 Thread Mike Gerdts
On Thu, Jan 8, 2009 at 10:36 PM, Darryl Gove wrote: > Ok. That's an entertaining problem. I'd suggest using the tools like > mpstat, prstat to look at the activity of the system during the time > when the fluctuations occur. You should also look at the dtrace toolkit > since that covers a wide ran

Re: [perf-discuss] CPU fluctuations issue

2009-01-08 Thread Darryl Gove
Ok. That's an entertaining problem. I'd suggest using the tools like mpstat, prstat to look at the activity of the system during the time when the fluctuations occur. You should also look at the dtrace toolkit since that covers a wide range of scenarios. http://opensolaris.org/os/community/dtrac

Re: [perf-discuss] CPU fluctuations issue

2009-01-08 Thread S h i v
On Fri, Jan 9, 2009 at 3:42 AM, Darryl Gove wrote: > If you're looking at a single application, then I'd suggest trying the > Performance Analyzer from Sun Studio. This should help you to see where the > time is being spent. There's a timeline view which should help you identify > what is happenin

Re: [perf-discuss] CPU fluctuations issue

2009-01-08 Thread Darryl Gove
If you're looking at a single application, then I'd suggest trying the Performance Analyzer from Sun Studio. This should help you to see where the time is being spent. There's a timeline view which should help you identify what is happening during the fluctuations. Regards, Darryl. S h i v w

Re: [perf-discuss] CPU fluctuations issue

2009-01-05 Thread S h i v
On Tue, Jan 6, 2009 at 7:19 AM, S h i v wrote: > > Mapping the system level information that sar(1) has thrown into > actual cause at process(or such) level has been the problem. > > Looking forward to get some insights. > On a side note, libgc.so (sun studio's garbage collection library) is bein

[perf-discuss] CPU fluctuations issue

2009-01-05 Thread S h i v
Hi All, I have a T2000 system running a legacy application(having many processes >80). The sar(1) output shows about 10% fluctuations in the CPU utilization in the USER space while the SYSTEM space variations do not show evident problems. The problem I might trying to address is: The system has be