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/dtrace/dtracetoolkit/


Regards,

Darryl.


S h i v wrote:
> On Fri, Jan 9, 2009 at 3:42 AM, Darryl Gove <darryl.g...@sun.com> 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 happening during the fluctuations.
>>
> 
> Thanks for the response. I am looking at an application that
> constitutes multiple process groups with each process group having
> multiple processes of a particular type.
> If the difficulty is in attributing the problem to any particular process 
> group.
> Once it can be attributed to a process the diagnosis possibly becomes
> simpler due to host of process level tools available.
> 
> -Shiv
> _______________________________________________
> perf-discuss mailing list
> perf-discuss@opensolaris.org

-- 
Darryl Gove
Compiler Performance Engineering
Blog: http://blogs.sun.com/d/
Book: http://www.sun.com/books/catalog/solaris_app_programming.xml
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