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Thank you, Quest Software Technical Support www.quest.com/support Quest Software Technical Support - Canada 902.442.5700 Quest Software Technical Support - United Kingdom 44.1628.601007 Quest Software Technical Support - United States 949.754.8000 > --------------------Original Message-------------------- > From: "Shapira, Yoav" [mailto:[EMAIL PROTECTED] > Sent: Fri, 22 Aug 2003 12:31:08 -0400 > To: "Tomcat Users List" [EMAIL PROTECTED] > Subject: RE: RE : Does Tomcat trim sessions when it runs out of memory? > > > Howdy, > Yes, there is indication somewhere about the memory currently used by tomcat: > Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory(). > > As you can tell from the functions, they're JVM-wide, not Tomcat-specific. This > would be true for any program, as all classes in the JVM share one heap. > > Tomcat's objects are cleaned up normally by the garbage collector, just like all > other program objects. Tomcat's programmers take care not to keep unneeded > references to objects which would prevent collection, but we like everyone else are > not perfect. So if you see a memory leak in the code, by all means point it out. > > Most of the time, applications leak memory, and do so in amounts much larger than > tomcat itself. Profile your application to see where memory is used so that you can > correct the code. At the same time, you can profile tomcat by itself if you're not > convinced its memory use is efficient. > > Sometimes, applications need more than the default 64MB java allocates the heap. > In that case, you would increase the heap size as needed by your app. > > Yoav Shapira > Millennium ChemInformatics > > > >-----Original Message----- > >From: Hertenstein Alain [mailto:[EMAIL PROTECTED] > >Sent: Friday, August 22, 2003 10:50 AM > >To: 'Tomcat Users List' > >Subject: RE : Does Tomcat trim sessions when it runs out of memory? > > > >Is there any indication somewhere about the memory currently used by Tomcat > >and the maximum memory allowed ? > >Is there a way to "clean up" memory used by Tomcat in order to avoid > >OutOfMemoryErrors (like a Garbage Collector for Java or something) ? > > > >Thanks > > > >-----Message d'origine----- > >De : Shapira, Yoav [mailto:[EMAIL PROTECTED] > >Envoy� : vendredi, 22. ao�t 2003 15:20 > >� : Tomcat Users List > >Objet : RE: Does Tomcat trim sessions when it runs out of memory? > > > > > > > >Howdy, > >No, it doesn't get rid of sessions (it's not allowed to according to the > >spec). In fact, tomcat doesn't try to detect when it's "running out of > >memory" and doesn't do anything about it: if you don't have enough memory, > >tomcat will go into an undefined state (or just die) with an > >OutOfMemoryError. > > > > > >Yoav Shapira > >Millennium ChemInformatics > > > > > >>-----Original Message----- > >>From: Neil Aggarwal [mailto:[EMAIL PROTECTED] > >>Sent: Thursday, August 21, 2003 10:03 PM > >>To: 'Tomcat-User' > >>Subject: Does Tomcat trim sessions when it runs out of memory? > >> > >>Hello: > >> > >>I have a question: > >> > >>Does Tomcat get rid of sessions when it run out of memory? > >> > >>We are seeing sessions disappear on our app and are trying > >>to find an explanation for it? > >> > >>What does Tomcat do when it begins to run out of memory? > >> > >>Thanks, > >> Neil > >> > >>-- > >>Neil Aggarwal, JAMM Consulting, (972)612-6056, www.JAMMConsulting.com > >>FREE! Valuable info on how your business can reduce operating costs by > >>17% or more in 6 months or less! => > >http://newsletter.JAMMConsulting.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. 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If you have received this email in error please notify > >the system manager. > >********************************************************************** > > > > > >--------------------------------------------------------------------- > >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] >
