Hi, If you're using the top command, those are not processes, they're threads within the same (one) JVM process. That's normal and expected. The threads may be active (servicing a request), or idle waiting for one. In the idle state, they consume negligible system resources.
To configure how many threads Tomcat creates, check out the maxThread/minThreads/maxSpareThreads and related parameters on the Connector element in Tomcat's Configuration Reference documentation. Yoav Shapira http://www.yoavshapira.com >-----Original Message----- >From: Andrew Garrett [mailto:[EMAIL PROTECTED] >Sent: Wednesday, November 24, 2004 7:24 PM >To: [EMAIL PROTECTED] >Subject: Lots of seemingly dead tomcat processes > >Hi All. > >I've got a bit of an issue with a tomcat installation - I have an ever >increasing number of processes, and the system users complain of >intermittant slow performance. When a particular request is taking a >long time (generally not responding at all - timing out after a couple >of minutes) a page-refresh will generally generate a response in a >normal time frame (on the order of 1-2 seconds). To me, this is >symptomatic of a particular request hitting a dead tomcat process, >while the refresh (being a different request) hits a different tomcat >process, which responds in a more normal time. > >I'm a sys-admin type, not a developer, and my tomcat-foo is reasonably >weak (but getting stronger, the more I do with it, of course). > >The system is running on a dual processor 2.8 GHz Xeon box, with 4 gig of >ram. >Base OS is Debian GNU/Linux >I'm using the JRockit JVM, and Tomcat 5.0.27 >The JVM and tomcat are in a chroot jail >The tomcat server is making SOAP calls to another machine, and talking >directly to an MS-SQL box - both the machine to which it makes the >SOAP calls and the MS-SQL box show no indications of load. >When tomcat is freshly restarted, I have 44 tomcat processes (ps ax | >grep jrockit | wc -l). Over time (a number of days) this increases, >until it hits around 245 processes, and it goes no higher than this. > >What I'm looking for is some sort of solution - either some tomcat >setting I'm unfamiliar with that might be causing this, or some way >outside of Tomcat > >I can put a band-aid style fix in place - restarting tomcat every X >days, but that's uglier than I'd like - I'd far rather identify and >fix the problem, than do scheduled restarts. > >Any assistance or suggestions that any kind soul can offer would be >greatly appreciated. > >Thanks. > >Andrew > >-- >They sicken of the calm; http://scroll.redemption.co.nz/ >That know the storm. http://www.gadgets-weblog.com/ > >--------------------------------------------------------------------- >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]
