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Strange CPU behaviour  RSS feed

 
Sreeja Rajit
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Hi,

We find our server machines working in a strange way. many requests in the order of 300 -400 are fired to our servers.recently it is noted that the CPU usage reached 100% and even after the task is completed this does not come down as a result of which our requests piles up and there is outage. even the memory usage is high. we are unable to determine what might have caused this high CPU Usage.PLease help us as this is very urgent and we need resolve this problem as soon as possible.

Technical Details:

Server : Tomcat4.X
JVM : 1GB

Regards
Sree
 
William Brogden
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Does each request make a database query? If so, how are you managing connections?
Since you don't say the operating system, I don't know what monitoring capability you have - are you sure the CPU is 100% in the JVM? How about other monitoring statistics in addition to CPU time such as page faults.
Bill
 
Sreeja Rajit
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We do not query any database but it is a webservice which generates reports. Many applications contact the server for reports. at some points these request number reaches 300-400.All request are processed successfully but still the CPU usage remains close 100% and does not reduce. we have four such servers which are designed to balance the load. Inspite of this the problem occurs in individual servers.


Regards
Sree
 
Sreeja Rajit
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Oops! we are using Windows Operating system

Regards
Sree
 
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