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ajp thread takes more cpu time?

created by jaganmohan madire in Performance Tuning - View the full discussion

Hi,

We are facing some issue while doing performance testing for our application.

 

We have 500 different users using 500 different customer names for searching and viewing the details.

 

The problem we are facing is with the AjpProcessor.read(Socket...) taking lot of CPU time.

http://community.jboss.org/servlet/JiveServlet/downloadImage/2-586879-11334/450-41/ajp.read_issue%28%29.JPG

 

Attached is the javacore/dump if needed.

 

We have the below parameter after going thru various performance link on the community and sites.

 

So far, We changed the following parameters from default values at various levels:

Jboss

<max-pool-size>

100

Jboss

maxThreads(AJP)

500

Jboss

enableLookups(AJP)

FALSE

Jboss

enableSessionPath(AJP)

TRUE

Apache

ServerLimit(prefork.c)

1000

Apache

MaxClients(prefork.c)     

1000

Apache

MaxClients(worker.c)     

1000

Oracle

SGA

8 GB

Oracle

Number of Processess

1000

Oracle

PGA

1 GB

OS(Linux)

fs.file-max

1000000

LDAP

sizelimit

unlimited

 

let us know if we have any more changes or additions to the above table at any level.

 

Any body encountered/faced this issue earlier, please let us know.

 

Thanks in advance,

Jagan.

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