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List:       opensolaris-tools-discuss
Subject:    [tools-discuss] Weird CPU overload spikes on solaris 8
From:       Ritesh <ritesh.patani () gmail ! com>
Date:       2007-06-17 0:18:03
Message-ID: 7282059.1182064713190.JavaMail.Twebapp () oss-app1
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I am facing a strange problem of CPU spikes every 12-13 mins. This is 
a sun fire V210 machine (with 2 processors) and solaris 8. (5.8 Generic_117350-26 \
sun4u sparc SUNW,Sun-Fire-V210) 

I have oracle, tomcat and a client-server (c++) application with few 
threads running on the system(this is a simple messaging application). 

I tried monitoring with prstat -Lm 1 but that shows me every thread of 
the application pretty much consuming consistent cpu (user and 
system). 
mpstat however do shows the spikes happening 12-13 mins. i am 
unable to catch the culprit. i do see the prstat -m shows ICWX 
(involuntary context switches) for application threads incrasing 
during the spike and so does the latency (it goes from 0.0 to 4.5). 

How do i catch the culprit. my oracle is pretty much supposed to be 
idle, so does the tomcat/ java and any other process. 

Any help/pointers are greatly appreciated. 


thanks 
rp.
 
 
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