Hi, Yes, my test was from my workstation with two browser windows open (separate sessions). I have also observed a 50% cpu load from tomcat on the server, hit that server while someone else was presumably generating a large report and not able to get the cpu to go above 50% yet observed sloooow performance.
-Dan -----Original Message----- From: Parsons Technical Services [mailto:[EMAIL PROTECTED] Sent: Thursday, December 02, 2004 10:18 PM To: Tomcat Users List Subject: Re: Tomcat/Java and SMP Dan, Did you start the second connection from the same machine? Doug ----- Original Message ----- From: "Dan Foreman" <[EMAIL PROTECTED]> To: "Tomcat-User" <[EMAIL PROTECTED]> Sent: Thursday, December 02, 2004 10:40 PM Subject: Tomcat/Java and SMP > Hi, > > I have a setup of 10 application servers using Tomcat 4/5, jsdk 1.4.2_02, > SMP, win2k. In watching the performance under load I am > concerned that only one CPU is being utilized at a time. To validate my > theory I try hitting the application server with a request > to generate a large report and then making another connection. The second > connection is painfully slow and task manager only > reports a 50% CPU utilization. After doing some reading on SMP/native > threads and windows, I wrote a test java application that > spawns n infinite loop threads from a single JVM with a delay between each > creation. Sure enough one cpu (task manager reporting > 50%) and then the other cpu are consumed (task manager reporting 100%). > This test tells me that Java is capable of using both CPU's > via native threading and some black magic in the windows dll's but that > this scenario isn't happening in tomcat. > > Is it possible for tomcat to use more than one CPU or is there a critical > flaw in my logic? > > -Dan > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
