In addition to the great info John gave you, here's Robi's take on things...
http://www.robisen.com/index.cfm?mode=entry&entry=FD4BE2FC-55DC-F2B1-FED0717 CC1C7E0AF ...and a follow-up with more good stuff: http://www.robisen.com/index.cfm?mode=entry <http://www.robisen.com/index.cfm?mode=entry&entry=39E0B0C6-55DC-F2B1-FBBDB7 0CEC963D6D> &entry=39E0B0C6-55DC-F2B1-FBBDB70CEC963D6D Hope this helps. Respectfully, Adam Phillip Churvis President Productivity Enhancement From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of John Mason Sent: Friday, December 14, 2007 1:39 PM To: discussion@acfug.org Subject: RE: [ACFUG Discuss] CF8/Garbage Collection/Performance My article on JVM tuning will answer several of your questions.. http://labs.fusionlink.com/katapult/index.cfm?page=articles/jvmtuning Even if you are running on a non Ent version of CF. You can still use SeeFusion trial (for up to 2 hours) and FusionReactor has a trial as well. When you had or doing the monitor running. What did you see? You have a gig for your heap size. Are you filling that up several times a day? Basically you need to find the problem and fix it CF coding first. Playing around with the JVM could simply make your situation worse. John Mason [EMAIL PROTECTED] 770.337.8363 www.FusionLink.com - ColdFusion and Flex hosting Now offering ColdFusion 8 Enterprise hosting FREE Subversion hosting _____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Charlie Stell Sent: Friday, December 14, 2007 1:16 PM To: discussion@acfug.org Subject: [ACFUG Discuss] CF8/Garbage Collection/Performance Im looking into performance issues with an application running on CF8. One of the things Im checking is the GC , Does anyone know how to pragmatically invoke GC? I know you can manually click GC if you have Server Monitor available in CfAdmin (which I did until the 30 days was up and the Standard Edition limitations kicked in). I know also through Server Monitor you can create alerts that can be based on memory stats. and that this alert can invoke GC. Can this alert be created/managed pragmatically? Based on the JVM Arguments, CF/Jrun will do GC regardless of such alert existing or not - correct? The server has a single 2.40Ghz Xeon3220 proc and 2 gigs of ram Its running Microsoft Window Server 2003/Web Ed. SP2 / IIS / CF8 Standard (8,0,0,176276). Its only use is as a CF8 application server. Java Version is 1.6.0_01. The JVM Arguments are: java.args=-server -Xms1000m -Xmx1000m -Dsun.io.useCanonCaches=false -XX:MaxPermSize=192m -XX:+UseParallelGC -Dcoldfusion.rootDir={application.home}/../ -Dcoldfusion.libPath={application.home}/../lib -Dcoldfusion.classPath={application.home}/../lib/updates ,{application.home}/../lib,{application.home}/../gateway/lib/,{application.h ome}/../wwwroot/WEB-INF/flex/jars,{application.home}/../wwwroot/WEB-INF/cffo rm/jars,c:\\coldfusion8\\cfx\\java\\CFX_PDF.jar Never had to deal with the JVM... so I'll be reading up on it this weekend, but does anyone see any obvious problems with the JVM Arguments? ------------------------------------------------------------- Annual Sponsor - Figleaf Software <http://www.figleaf.com> To unsubscribe from this list, manage your profile @ http://www.acfug.org?fa=login.edituserform For more info, see http://www.acfug.org/mailinglists Archive @ http://www.mail-archive.com/discussion%40acfug.org/ List hosted by FusionLink <http://www.fusionlink.com> ------------------------------------------------------------- ------------------------------------------------------------- Annual Sponsor - Figleaf Software <http://www.figleaf.com> To unsubscribe from this list, manage your profile @ http://www.acfug.org?fa=login.edituserform For more info, see http://www.acfug.org/mailinglists Archive @ http://www.mail-archive.com/discussion%40acfug.org/ List hosted by FusionLink <http://www.fusionlink.com> ------------------------------------------------------------- ------------------------------------------------------------- Annual Sponsor FigLeaf Software - http://www.figleaf.com To unsubscribe from this list, manage your profile @ http://www.acfug.org?fa=login.edituserform For more info, see http://www.acfug.org/mailinglists Archive @ http://www.mail-archive.com/discussion%40acfug.org/ List hosted by http://www.fusionlink.com -------------------------------------------------------------
