Woah, I wouldn't reduce it. If your server is already running out of memory, the last thing it needs is less to work with.
Garbage collection is an automatic process of your JVM that reclaims used memory as free space if it is no longer being used. http://en.wikipedia.org/wiki/Garbage_collection_(computer_science) All the things your requests create when they run stay in memory after the thread is finished. GC runs on a schedule and looks for any objects in memory that have no hard references for them and removes them. There's a actually at least two types of GC depending on which part of the heap the objects are living in. It's a rather deep topic, and I recommend you read up on it. http://www.javaworld.com/javaworld/jw-08-1996/jw-08-gc.html Windows process manager will show you how much RAM has been devoted to your JRUN process. SeeFusion (Or Fusion-Reactor) will show you how much is actually being used. Here is some CFML code that will also give you that information: http://www.coldfusionmuse.com/index.cfm/2008/2/12/leaky.heap.jvm If you want it broken down any further, you have to get into some Java tools like JMeter: http://zacster.blogspot.com/2008/03/quick-howto-to-setup-jmeter.html Your next post stated that you are using pkzip25.exe to do the unzipping. Since pkzip runs as its own Windows process with its own memory space, you need to first identify where the memory on your server is going. Use the process manager to see how much each process is consuming. Then you need to break down your tasks into their parts and run each while watching the memory being used. How are the photos "downloaded"? CFHTTP? Are you using cfdirectory and cffile to move them around? You might need to look into some command line executables for doing that heavy lifting stuff outside of the CF process. And buy more RAM. Regardless of whether that really is your problem. your server will thank you. I hate to think of your swap usage with that low of a head room especially with SQL and FTP all running on the same box. ~Brad -------- Original Message -------- Subject: RE: What is the most like cause lf "Java Heap Space" error? From: "Rick Faircloth" <r...@whitestonemedia.com> Date: Tue, September 15, 2009 3:30 pm To: cf-talk <cf-talk@houseoffusion.com> No zipping...only unzipping. And yes, I do need to add some more RAM...definitely couldn't hurt. CF8, MySQL, FTP, scheduled tasks using a lot of cfthreads set up to run consecutively. I did go into the JVM settings and reduced the max to 256 to see if that helps. I'm not familiar with "garbage collection." What do you mean? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Want to reach the ColdFusion community with something they want? Let them know on the House of Fusion mailing lists Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:326340 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
