Re: java/116461: java.lang.OutOfMemoryError: PermGen space

The following reply was made to PR java/116461; it has been
noted by GNATS.

From: Nick Johnson <freebsdspatula.net>
To: bug-followupFreeBSD.org, rafaelbascongmail.com
Cc:  
Subject: Re: java/116461: java.lang.OutOfMemoryError:
PermGen space
Date: Wed, 19 Sep 2007 09:21:48 -0700 (PDT)

 The most obvious solution is to increase the amount of
permanent 
 generation space.
 
 java -XX:MaxPermSize=64m
 
 http://java.sun.com/javase/technologies/hotspot/vmo
ptions.jsp
 htt
p://java.sun.com/docs/hotspot/gc1.4.2/faq.html
 
    7.
 
       How should the permanent generation be sized?
 
 The permanent generation is used to hold reflective of the
VM itself such 
 as class objects and method objects. These reflective
objects are 
 allocated directly into the permanent generation, and it is
sized 
 independently from the other generations. Generally, sizing
of this 
 generation can be ignored because the default size is
adequate. However, 
 programs that load many classes may need a larger permanent
generation.
 
 
    8.
 
       How can I tell if the permanent generation is filling
up?
 
 
 Starting in 1.4.2 -XX:+PrintGCDetails will print
information about all 
 parts of the heap collected at each garbage collection. For
a full 
 collection
 
 
 [Full GC [Tenured: 30437K->33739K(280576K), 0.7050569
secs] 
 106231K->33739K(362112K), [Perm :
2919K->2919K(16384K)], 0.7052334 secs]
 
 
 this example shows that little was collected in the
permanent generation 
 (it went from 2919K used before the collection to 2919K
used after the 
 collection) and the current size of the permanent
generation is 16384K.
 
 
    9.
 
       How can I increase the permanent generation size?
 
 
 Use the command line option -XX:MaxPermSize=<desired
size>
_______________________________________________
freebsd-javafreebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-java

To unsubscribe, send any mail to
"freebsd-java-unsubscribefreebsd.org"