Depending on how your app handles things you can address the frequency of GC but also change the _method_ of GC as well.
Pete Freitag gives a great explanation on the different methods of GC: <http://www.petefreitag.com/articles/gctuning/> It's for 1.42 but it gets the general definitions across. Here is the low down dirty from Sun: <http://java.sun.com/docs/hotspot/gc5.0/gc_tuning_5.html> Also be advised that GC can become more tedious when you throw more memory to the jvm itself. Unless you are sure you need to allocate 1GB to your jvm annd have an incredible heap, you might be shooting yourself in the foot there too. :( JVM tuning: an art and a science! :) On Thu, Feb 5, 2009 at 14:55, Wil Genovese <jugg...@visi.com> wrote: > > What is running your GC? Nothing in the JVM settings you posted shows how > often your GC is running therefore to me it looks like your using the > default values which is one minute. > > So the settings I posted are for 10 minute intervals. We've had great > results with that interval. There are other items in you JVM settings you > should look at also. > > Such as -Xmx1024m -Xms768m > > The min and max should be set to the same levels. The overhead to auto > increase the size to the max when needed is not good and on Windows it's > worse. > > We and others have also found that increase the perm size can help and you > should be setting the min and max to be the same. > > Take the time to read what I wrote about tuning the JVM. It is based on the > experience we had with our servers and many have found it usful in fixing > there servers. > > Settings values are not set in stone - each server environment and > application needs to be custom tuned. I simply provide some guide posts > along the way. > > Wil Genovese > Sr. Web Application Developer > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;207172674;29440083;f Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:318945 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
