Hi, we are testing a new server, to check whether we can achieve higher performance/hardware cost ratio. The new toy is a 4-cpu double core opteron: processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 33 model name : Dual Core AMD Opteron(tm) Processor 875 stepping : 2 cpu MHz : 2194.095 cache size : 1024 KB
So it's basically an 8processor machine with 8 gb ram. We are running 2.6.8-11-amd64-k8-smp on it. The JDK Version is 1.5.0_06-b05, 32 bit. With one tomcat instance we could achieve triple performance of our second best server a 2 proc Intel(R) Xeon(TM) CPU 3.40GHz. However this isn't optimal, since the 8 proc machine costs more than triple price of the intel machine. One of my assumption for relative bad performance is the gc. If I install 2 or 4 tomcat instances on the same machine, I assume that if I'm lucky the gc in the separate VMs will run not at the same time, therefore reducing overall 'blocking' time and increasing combined performance. Does anyone have any experience or comparative tests with this issue? Due to some circumstances we can perform the next series of tests end of the next week at the earliest, but if someone already did it, and has negative results, I would be glad to hear it, and maybe try something else :-) thanx in advance Leon --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
