Hi, It's an OS thread limit problem. On a unix system you'd fix it with the ulimit command. On Windoze I don't know.
Yoav Shapira Millennium Research Informatics >-----Original Message----- >From: Stuart Larking [mailto:[EMAIL PROTECTED] >Sent: Tuesday, May 11, 2004 9:04 PM >To: '[EMAIL PROTECTED]' >Subject: Tomcat.exe w2k Mem limit? > >Anyone hit a limit on TC 4.1.x Mem Usage size (or other unexpected limit) >with tomcat.exe on w2k? > >We are running TC 4.1.29, which is running as a service using tomcat.exe. >The -Xmx (on the service in the registry as a JVM Option) is set to 1580m >as >the machine has plenty of RAM and lots of data (app is memory hungry). > >When the Windows Task Manager Mem Usage gets above 600mb (sometimes as high >as 700mb), tomcat slows to a crawl and a few requests later the server dies >with the following error in the stderr.log. The threads get to about >200-260 for the tomcat.exe (MaxProcesses set to 500). > > >Severe: Caught exception executing >[EMAIL PROTECTED], terminating thread >java.lang.OutOfMemoryError: unable to create new native thread at >java.lang.Thread.start(Native Method) >at >org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.<init>(Thread Pool >. >java:630) > > >We thought it might be related to the native thread pool being set too >high, >so set the -Xss to 16k, but same results. > >When we run with the same JVM Options in catalina.bat and launch from the >startup.bat (run it in the console) the Mem Usage scales over the 1gb mark >and the threads go to about 800 without any issue as expected. >Unfortunately running it as a console is not a desirable option for us. > > >Platform details: > >Compaq Proliant server >4GB Ram >Windows 2k Server >java version "1.4.2_03" >Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02) >Java HotSpot(TM) Server VM (build 1.4.2_03-b02, mixed mode) >Apache Tomcat v4.1.29 >-server >-Xms1580 >-Xmx1580 >-Xss16k > >Any help greatly appreciated. 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]
