IdPProdLoadTest having connection refused exception

[Qasim Lone]

I have configured the load tester and it seems to run fine if the number
of unique clients per process is less than 100, but when I increase the
clients to larger number it is giving me connection refused exception,
while running for grinder.threads=3000 I get  1375 as success and 1625
failures. The exception is as follows. 

 

 

/4/13 5:16:36 PM (thread 814 run 0 test 2): Aborted run due to Java
exception calling TestRunner

Java exception calling TestRunner

        File
"/root/idploadtest/trunk/grinder-framework/tests/saml2sso_idp/test.py",
line 54, in executeSSOTest

        File
"/root/idploadtest/trunk/grinder-framework/tests/saml2sso_idp/test.py",
line 107, in __call__

Caused by: java.net.ConnectException: Connection refused

        at java.net.PlainSocketImpl.socketConnect(Native Method)

        at
java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:
327)

        at
java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImp
l.java:193)

        at
java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:18
0)

        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:384)

        at java.net.Socket.connect(Socket.java:546)

        at
sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:584)

        at sun.security.ssl.SSLSocketImpl.<init>(SSLSocketImpl.java:426)

        at
sun.security.ssl.SSLSocketFactoryImpl.createSocket(SSLSocketFactoryImpl.
java:142)

        at
com.gargoylesoftware.htmlunit.ssl.InsecureSSLProtocolSocketFactory.creat
eSocket(InsecureSSLProtocolSocketFactory.java:82)

        at
org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:70
7)

        at
org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$HttpCon
nectionAdapter.open(MultiThreadedHttpConnectionManager.java:1361)

        at
org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMe
thodDirector.java:387)

        at
org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMetho
dDirector.java:171)

        at
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:3
97)

        at
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:3
46)

        at
com.gargoylesoftware.htmlunit.HttpWebConnection.getResponse(HttpWebConne
ction.java:97)

        at
com.gargoylesoftware.htmlunit.WebClient.loadWebResponseFromWebConnection
(WebClient.java:1430)

        at
com.gargoylesoftware.htmlunit.WebClient.loadWebResponse(WebClient.java:1
388)

        at sun.reflect.GeneratedMethodAccessor116.invoke(Unknown Source)

        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
Impl.java:43)

        at java.lang.reflect.Method.invoke(Method.java:616)

        at org.python.core.PyReflectedFunction.__call__(Unknown Source)

        at org.python.core.PyMethod.__call__(Unknown Source)

        at org.python.core.PyObject.__call__(Unknown Source)

        at org.python.core.PyInstance.invoke(Unknown Source)

        at
org.python.pycode._pyx0.executeSSOTest$1(/root/idploadtest/trunk/grinder
-framework/tests/saml2sso_idp/test.py:54)

        at
org.python.pycode._pyx0.call_function(/root/idploadtest/trunk/grinder-fr
amework/tests/saml2sso_idp/test.py)

        at org.python.core.PyTableCode.call(Unknown Source)

        at org.python.core.PyTableCode.call(Unknown Source)

        at org.python.core.PyFunction.__call__(Unknown Source)

        at sun.reflect.GeneratedMethodAccessor100.invoke(Unknown Source)

        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
Impl.java:43)

        at java.lang.reflect.Method.invoke(Method.java:616)

        at org.python.core.PyReflectedFunction.__call__(Unknown Source)

        at org.python.core.PyMethod.__call__(Unknown Source)

        at org.python.core.PyObject.invoke(Unknown Source)

        at
net.grinder.engine.process.jython.InstrumentedPyJavaInstanceForPyFunctio
ns.access$401(InstrumentedPyJavaInstanceForPyFunctions.java:38)

 

 

Can anyone guide me where to look for, so that larger number of clients
can be handled by the idp ? I am configuring this as last time our
company shifted to saml, the server became non-responsive because of 8K
unique users tried to connect to application simulataneously. 

 

I have already done following steps at IDP for fine tuning 

1)       Set JAVA_OPTS=-server -Xms2048m -Xmx3072m -XX:MaxPermSize=128m
-XX:+DisableExplicitGC -XX:+UseParallelOldGC -verbose:gc

2)      Changed the default in httpd-mpm.confid to follows 

         <IfModule mpm_prefork_module>

    StartServers          10

    MinSpareServers       5

    MaxSpareServers      20

    MaxClients          500

    MaxRequestsPerChild   5000

</IfModule>

 

 

 

 

 

Regards

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