Hi, We have a Tomcat app that is loadbalanced by hardware. I have 4 boxes available in our test env, all of which vary slightly but not massively in spec.
Anyway I moved from 2 tomcat instances on each machine ( listening on different ports ) down to 1 and I noticed for the same load the cpu utilisation dropped by 20%. Interesting, how can this be explained? Is this the extra effort in tomcat or something? Or is it memory related? the 2 instances had 1gb each, and the single one has been given 4gb. However I have jprofiled the instance and it has never seemed memory hungry. Anyway I suspect even at 2gb for 1 instance it would still be 20% less cpu - i can always do a run to prove this if people think that necessary.. Another thing i've found is that on one server I have abnormally high CPU utilisation for the same load. I've checked the logging levels are all the same as are the java VM and the VM config settings. I wonder what else could cause this? All i can think is some sort of OS or hardware malfunction! maybe the CPU cache is duff or something. Many thanks to any input to my Friday weird-ness! Dan ________________________________________________ Message sent using UebiMiau 2.7.10 --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
