I know about that...I thought you had some special GC setting I didn't know about!
-----Original Message----- From: SteveK [mailto:[EMAIL PROTECTED] Sent: 12 January 2005 11:48 To: CF-Server Subject: Re: stability This is from our JVM arguments: -server -Dsun.io.useCanonCaches=false -Xbootclasspath/a:"{application.home}/ ./lib/webchartsJava2D.jar" -XX:MaxPermSize=384m -XX:+UseParallelGC -Xss1m We use XX:MaxPermSize=384m with our min heap at 512m and max at 1024m Read: http://www.unixville.com/~moazam/stories/2004/05/17/maxpermsizeAndHowItRelat esToTheOverallHeap.html Its not the garbage collection setting but the size the heap grows and shrinks by. We came to the conclusion that the 64m was too small for a busy application (cannot grow fast enough) Before updating this to 384 our machines would run fine for about 18hrs then all bomb out. Steve ----- Original Message ----- From: "Robertson-Ravo, Neil (RX)" <[EMAIL PROTECTED]> To: "CF-Server" <[email protected]> Sent: Wednesday, January 12, 2005 5:47 AM Subject: RE: stability > Eh? What setting are you using for this?! > > > > -----Original Message----- > From: SteveK [mailto:[EMAIL PROTECTED] > Sent: 12 January 2005 10:48 > To: CF-Server > Subject: Re: stability > > Try increasing your garbage collection. We had to increase ours to 384mb to > get some stability. Play with the setting in small increments. > > Steve > > ----- Original Message ----- > From: "Bert Dawson" <[EMAIL PROTECTED]> > To: "CF-Server" <[email protected]> > Sent: Monday, January 10, 2005 2:41 PM > Subject: Re: stability > > > > We've set -Xms862m -Xmx862m (and both to 512 on the box withonly a gig > > of ram), so i don't think it can be the 1.8gb thing. (the 1.4 gig > > usage i mentioned was reported in task manager). > > > > As for garabge collection, we've changed from (i think): > > -XX:+UseParallelGC > > to: > > -XX:+UseConcMarkSweepGC > > > > Prior to that switch then JRun would just crash, and require a manual > > restart, and now it will re-start itself, which i suppose is a > > blessing. > > > > The main question is where to go next? > > > > Cheers > > Bert > > > > On Mon, 10 Jan 2005 20:34:37 +0200, Erki Esken <[EMAIL PROTECTED]> > wrote: > > > On Mon, 10 Jan 2005 17:41:03 +0000, Bert Dawson <[EMAIL PROTECTED]> > wrote: > > > > I've got a couple of servers running enterprise and they keep > crashing. > > > > Usually they restart themselves, and the only downside is everyone > > > > losing sessions, and delayMS and CPU go through the roof for a minute > > > > or two. > > > > Looking at memory usage and CPU they seem to be fine: CPU around > > > > 10-20%, using 1.4gb memory being used on a 4gb box. > > > > > > Maybe it's related to the 1.8 GB memory limit of CF? What's the upper > > > limit of JVM memory usage on that server? Maybe it dies when memory > > > usage goes past 1.8 GB. See also: > > > > http://www.macromedia.com/cfusion/knowledgebase/index.cfm?event=view&extid=t > n_19359 > > > > > > And try searching "jvm" or "garbage collection" at > > > http://fullasagoog.com/ for hints on troubleshooting JVM GC issues. > > > There are good blog posts about this. > > > > > > -- > > > Erki > > > > > > > > > > > > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Find out how CFTicket can increase your company's customer support efficiency by 100% http://www.houseoffusion.com/banners/view.cfm?bannerid=49 Message: http://www.houseoffusion.com/lists.cfm/link=i:10:5104 Archives: http://www.houseoffusion.com/cf_lists/threads.cfm/10 Subscription: http://www.houseoffusion.com/lists.cfm/link=s:10 Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.10 Donations & Support: http://www.houseoffusion.com/tiny.cfm/54
