Howdy, Just one correction: > You can invoke the garbage collector by using the System.gc() method.
This is a common misconception: System.gc() is merely a suggestion to the VM to run collection. The VM is not obliged to run it then, i.e. this is not a hard directive. It should never be relied upon. With JDK 1.4, there's a runtime parameter to ignore System.gc() calls and that parameter may be on by default in the future. Yoav Shapira > >The memory is never returned to OS but the JVM keeps it in a pool used for >object creation, it would make no sense in releasing this back to the OS as >it will probably need to use it at some point or another. > >In more recent JVM's (1.4 onwards) the garbage collector has been threaded >to improve performance and penalties as until then the cost of a collection >was relatively expensive. > >For more information read the documentation at www.java.sun.com > >Hope this helps > >Pete > >-----Original Message----- >From: Michael Duffy [mailto:[EMAIL PROTECTED] >Sent: 14 January 2004 14:07 >To: Tomcat Users List >Subject: Re: Memory Leaks > > > >My understanding is that the GC runs on a low-priority >thread, so you never get to tell it when to run. The >operating system and JVM deal with it. > >I also recall reading that memory is returned to the >JVM, but not released back to the OS. So if you're >watching Memory Usage in the Windows Task Manager and >not seeing it go down, that might explain why. - MOD > > > > >--- Christian Witucki <[EMAIL PROTECTED]> >wrote: >> Does anyone know that when Garbage Collection is >> going on how often it should be set to collect and >> if memory is really being returned. I believe that >> the memory is not, but how can I check to determine >> that??? >> >> Christian Witucki >> Network Analyst >> 375 Essjay Road >> Williamsville, NY 14221 >> 716-631-3001 x3812 >> >> CONFIDENTIALITY NOTICE. This e-mail and attachments, >> if any, may contain confidential information which >> is privileged and protected from disclosure by >> Federal and State confidentiality laws, rules or >> regulations. This e-mail and attachments, if any, >> are intended for the designated addressee only . If >> you are not the designated addressee, you are hereby >> notified that any disclosure, copying, or >> distribution of this e-mail and its attachments, if >> any, may be unlawful and may subject you to legal >> consequences. If you have received this e-mail and >> attachments in error, please contact Independent >> Health immediately at (716) 631-3001 and delete the >> e-mail and its attachments from your computer. >> Thank you for your attention. >> >> >> >--------------------------------------------------------------------- >> To unsubscribe, e-mail: >> [EMAIL PROTECTED] >> For additional commands, e-mail: >> [EMAIL PROTECTED] >> > > >__________________________________ >Do you Yahoo!? >Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes >http://hotjobs.sweepstakes.yahoo.com/signingbonus > >--------------------------------------------------------------------- >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] 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]
