Hi, NTI: Not a Tomcat Issue. Parallelization depends on the VM implementation for your specific OS and might require special configuration switches: consult your JVM documentation.
Yoav Shapira http://www.yoavshapira.com >-----Original Message----- >From: Dan Foreman [mailto:[EMAIL PROTECTED] >Sent: Thursday, December 02, 2004 10:41 PM >To: Tomcat-User >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] This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
