If System.runFinalization() and System.gc() are misleading... what should I use instead, to force to garbage collection?
So, the amount of memory the JVM uses, will always increase? How do I get it to decrease? 256 was an arbitrary choice. Is there some formula I should be using (based on projected traffic)? bort "Shapira, Yoav" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] Hi, >We've setup Tomcat to use a max of 256Mb. I've been tracking memory usage >using: > > System.runFinalization(); > System.gc(); Be aware that the above two lines are misleading, as they are suggestions and not guaranteed to actually do anything. >What I've noticed is that the the 'T' value (Total Memory) slowly >increases, >but never goes back down. According to the Runtime javadoc, this is the >total amount of memory in the JVM. Will this continue to increase? What >happens when it hits the Maximum memory amount? Should I be concerned >about >this? It will continue to increase as needed until and unless it hits a specified boundary, e.g. the amount you specify in -Xmx plus system memory overhead (e.g. the stack and symbol table). If all available memory is allocated and more memory is requested, you will get a java.lang.OutOfMemoryError. Should you be concerned about this? Of course ;) You should always know how much memory your system requires to handle its expected loads, and you should configure your system according to this knowledge. For example, why did you pick 256MB maximum? Yoav Shapira 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]
