start tomcat with -Xrunprof and look at the profile to figureout if
there are any objects consuming more memory(leaks). Thread.activeCount()
gives you total number of active threads in the current JVM.
Refer to javax.management to know more about the Mbeans to monitor the
tomcat.
You need to write the proxy valve by implementing the
org.apache.catalina.Valve, interface. This proxy will gets the request
and invokes the actual servlet. You can track the time taken to process
each request here.
Bhaskar
Peddireddy Srikanth wrote:
Hi,
Its giving out of memory over a period of time (i.e after test ran for
some time ) not immediately after starting the test
Follwing settings are given in my server.xml
For HTTP
<Connector port="80"
maxThreads="500" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="150"
connectionTimeout="20000" disableUploadTimeout="true" />
For HTTPS
<Connector port="443"
maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" disableUploadTimeout="true"
acceptCount="100" scheme="https" secure="true"
clientAuth="false" sslProtocol="TLS" />
By active threads do u mean the thread count shown in windows task
manager or is there any way to find out active threads in Tomcat? what
is this Performance-Valve? can u give some more details on it ?
Thank you
regards
Srikanth.P
On 7/14/05, Bhaskar <[EMAIL PROTECTED]> wrote:
You need to check on whether it is giving Outofmemory error is
immediately after starting loadtesting with 1500 users or over period of
time. If it is over period of time then you need to check whether there
are any memory leaks. Or your design for ex., it might happen if you
query db and that ends up resulting in huge number of rows.
BTW., what is the max number of threads you have configured?
and what is the active number of threads? Pbly u can use
Performance-Valve to get such details.
Bhaskar
srikanth peddireddy wrote:
Hi All,
Recently we started load testing our application using Jmeter.
Following error is coming in tomcat while test is run at higher loads like 1500
virtual users etc
======================================
SEVERE: Caught exception (java.lang.OutOfMemoryError) executing org.apache.tomca
[EMAIL PROTECTED], terminating thread
Jun 30, 2005 3:13:53 PM
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable run
======================================
I already configured the Tomcat using -Xmx option to use upto 2GB of RAM
(Tomcat is running on a 3GB RAM machine)
Any inputs or pointers to the related resources on this problem??
regards
Srikanth
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