On 14/12/2010 11:40, Luca Gervasi wrote: > On 12/13/2010 01:14 PM, Pid wrote: >> On 13/12/2010 10:13, Luca Gervasi wrote: >>> Hello, >>> >>> I know that my problem is with the application my tomcat 5.5 powered by >> >> 5.5.x, where x is what? > > Tomcat 5.5.26, i omitted because i'm sure it's a webapp fault. > For instance, JVM Version: 1.5.0_17-b04 > >> >>> java 1.5.0_b4 is running. >> >> That's a really old JVM. Each minor release can contain improvements to >> garbage collection algorithms - even new features. If you're stuck with >> 1.5, you should try to get the last release. >> > > I'm a sysadmin, i'm not allowed to make change in the enviroment other > than the client asks for. I can just "promote" a change. (and did it) > >>> I have this supposely leeking application that keeps saturating the >>> permanent generation. >>> >>> The problem is an out of memory on the permgen. >> >> It could just be that your application needs more space allocated in >> permgen. How much memory are you assigning to the JVM, what values are >> you setting for garbage collection etc? >> >> > > I have 1536m of heap, 64Mb (the default, i suppose) allocated for > permgen. other options regards the GC only (PrintGC, PrintGCDetails > PrintGCTimeStamps).
Enable JMX, use JConsole or VisualVM to monitor PermGen over the course of a day - you may just need to increase it to accommodate your apps. p >>> Studying the JVM, i understand that the permgen is never sweeped by GC. >>> >>> My question is: i found the flags combo that enables permgen sweeping. >>> Is that a good thing to enable? I can't fix the application right now. >> >> It's not necessarily going to make a difference. >> >> Do you reload your application or is it not being actively developed? > > I used to reload some contextes in the past. Nowdays it's no longer > necessary as it goes oom on daily basis. > >> >> >> p >> > > Thanks for your time ^^ > > Luca > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org >
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