Hello,
For comparing performance of Apache Tomcat 7 with APR and Jboss Web Server
with APR version 2.1.4 with Tomcat 7 we have done a load test of an app.
The Open SSL and APR libtcnative files were in the path using the
LD_LIBRARY_PATH env variable. The protocol used was HTTPS.
While doing load testing with HP Load Runner we observed the following
response times(seconds) for 100 concurrent users:
Tomcat7 JbossWebServer-2.1.4 Jboss4.2.3
============================================
Login 94.63 38.74 63.826
Prj Select 57.15 23.835 7.753
SaveData 29.665 2.677 1.681
PageRender 15.071 2.659 12.456
Logout 0.092 1.973 0.089
For 50 concurrent users the following were the response times(seconds)
Tomcat7 JbossWebServer-2.1.4
Jboss
4.2.3
==================================================
Login 17.469 20.767
15.633
Prj Select 1.942 9.212
3.431
SaveData 1.209 1.663
2.222
PageRender 1.207 4.447
2.091
Logout 0.192 0.326
0.29
Tomcat7 has the following server.xml configuration :
<Connector port="28443" protocol="HTTP/1.1" SSLEnabled="true"
maxThreads="350" scheme="https" secure="true"
clientAuth="false" sslProtocol="TLS"
SSLCertificateFile="${catalina.base}/conf/server.crt"
SSLCertificateKeyFile="${catalina.base}/conf/server.key" />
As you see, the attributes "acceptCount" and "connectionTimeout" are not
specified. How much impact can these have on the response time of Apache
Tomcat 7?. What all the are the ways in which we can determine the cause of
the high response time for Tomcat?
The catalina.sh has the following JAVA_OPTS
-Xms128m -Xmx768m -XX:MaxPermSize=512m
Also I noticed that RequestDumper Valve can no longer be used in Tomcat7.
Any specific reason why this has been removed - is there any alternative
debugging valve created? Since that is frequently used to debug the response
headers.
Thanks,
Shivani
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