Currently we are running Java 1.5 with 64 bit version on the superdome server with Redhat O/S. But we have not specified the -server option in the JAVA_OPTS. Is it must to have -server option specified when you are using a 64 bit Java.
The CPU utilization nags me very much. The performance of the application pages/transactions are meeting our targets except the cpu target. We have the same application running on Weblogic/Apache/Oracle on Solaris O/S in which the CPU for 100 virtual user is 50-60%. To identify the surge in CPU, I tested the following scenario's yday. 2 users - Single Tomcat - 12-18% of CPU 4 users - Single Tomcat - 20-30% of CPU 6 users - Single Tomcat - 40-50% of CPU More than 6 users - Single/Double Tomcat - CPU utilization is 70-80%. Even if I test with 25/50/100 users the CPU maintains at 70%. We have max threads as 40 and I increased to 60 but did not find any difference in CPU. My application is an internet based one which currently has half a million page views everyday. In the near future it may exceed one million. I cannot test more than 100 users as we do not have license for more than 100 users. Is it a normal behavior of the tomcat ? On Wed, Nov 19, 2008 at 11:01 PM, Christopher Schultz < [EMAIL PROTECTED]> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Vasanth, > > Vasanth Kumar ravi wrote: > > We did many rounds of load/performance testing with 50 Virtual users, to > > find bottlenecks with the application, major problem found was CPU > > utilization. > > > > 1. We did load testing with 1 apache and 1 tomcat, the CPU was arnd 70% > > 2. We did load testing with 2 apache and 2 tomcat, the CPU was arnd 70% > > 3. We did load testing with 2 apache and 3 tomcat, the CPU was arnd 70% > > 4. We did load testing with 2 apache and 4 tomcat, the CPU was arnd 70% > > Was your load test designed to test your peak load expectations? IMO, > 70% CPU utilization means that you have appropriately sized your > hardware for your demand. I would call that a successful capacity > planning job: you even have a bit of room to grow before adding more > hardware. > > Are you just upset that you are using such a high percentage of your CPU? > > - -chris > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.9 (MingW32) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org > > iEYEARECAAYFAkkkKmYACgkQ9CaO5/Lv0PAwsgCghztrPqEqZr8qOgU9D/wQICcd > oFsAoKeDf44p9qPHOr0jlEA3LA1lEUhc > =lcEb > -----END PGP SIGNATURE----- > > --------------------------------------------------------------------- > To start a new topic, e-mail: users@tomcat.apache.org > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > -- Regards&Thanks, Vasanth Kumar Ravi
