> From: Talha Fazal [mailto:tfa...@credera.com] > Subject: Tomcat Performance Turning.
> In our staging environment for load testing, when we run the load > test using 525 concurrent users, the app doesn't perform at all. > The CPU usage (on Apache and Tomcat Servers) hovers between 7% to > 8%. The database server CPU usage is also between 4 and 5%. Since your CPU usage is low, your threads must be waiting for something. Take several thread dumps and find out what. http://wiki.apache.org/tomcat/HowTo#How_do_I_obtain_a_thread_dump_of_my_running_webapp_.3F (I'll guess maxThreads and data base connections; a max of 30 seems a bit low for 525 concurrent requests.) > validationQuery="SELECT 1 FROM BB_DUAL" Most DBs provide a very simple ping-like request capability; that would be preferable to a select. > -Xms512m -Xmx2048m In a server environment, one normally sets Xms and Xmx to the same value to avoid heap thrashing. However, this is unrelated to your current problem. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
