On 25 January 2011 18:09, Attila Szegedi <szege...@gmail.com> wrote: > You could load your heap dump into a profiler (I personally prefer > YourKit), and see whether all paths to all class loaders from roots lead > through a SoftReference object. If you have a lot of them, and inspecting by > hand is not feasible, use JHat instead, it has scripting capabilities - you > can write JavaScript programs for inspecting the object graphs. > > Attila. >
I have need of this now; I've got a lot of heap dumps to check and I'm not particularly psyched to do it by hand. Can you point to any more details on the scripting capabilities? I've only found this - http://blogs.oracle.com/sundararajan/entry/jhat_s_javascript_interface Cheers, James > > On Jan 25, 2011, at 3:34 AM, Jochen Theodorou wrote: > > > Am 24.01.2011 19:18, schrieb Attila Szegedi: > > [...] > >> I agree that this is, in all likeness, a GC bug - the JVM should > >> clear the soft references and then collect the ordinary heap + > >> permgen before throwing an OOME for permgen. I don't remember filing > >> a bug about this though… I think it'd be worth it, though. > > > > assuming I have a heap dump from the time the OOME was caused. Is there > a way to definitely say that it contains soft reachable objects? Some kind > of tool that does this for me in a reliable way? > > > > There are many tools out there, but I cannot clearly see if they are able > to do this and how. > > > > bye blackdrag > > > > -- > > Jochen "blackdrag" Theodorou > > The Groovy Project Tech Lead > > http://blackdragsview.blogspot.com/ > > For Groovy programming sources visit http://groovy.codehaus.org > > -- > You received this message because you are subscribed to the Google Groups > "JVM Languages" group. > To post to this group, send email to jvm-languages@googlegroups.com. > To unsubscribe from this group, send email to > jvm-languages+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/jvm-languages?hl=en. > > -- You received this message because you are subscribed to the Google Groups "JVM Languages" group. To post to this group, send email to jvm-languages@googlegroups.com. To unsubscribe from this group, send email to jvm-languages+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/jvm-languages?hl=en.
