Date: Mon, 24 Jan 2005 05:29:53 +0000 From: Ian G <iang@iang.org> To: Brent Verner <brent@rcfile.org> Cc: freebsd-java@freebsd.org Subject: Re: JDK1.5 regression from experimental to patchset 1 Message-ID: <41F487D1.3060805@iang.org> In-Reply-To: <20050124035338.GA68489@rcfile.org> References: <1106332573.54288.6.camel@renaissance.homeip.net> <20050124035338.GA68489@rcfile.org>
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Brent Verner wrote:
>When the hang occurs, the java process is not
>consuming any cpu.
>
>
you probably already tried this, but does
hitting it with CTRL\ work? If the JVM is sent
a SIGQUIT or kill -3 then it dumps the threads
on stdout. Examples below. This can give
some clues as to what it is waiting on, if
you hit at the appropriate moment.
iang
--
News and views on what matters in finance+crypto:
http://financialcryptography.com/
^Z
[1]+ Stopped ./wf
Wf(sox)localhost$ bg
[1]+ ./wf &
Wf(sox)localhost$ kill -3 %1
Full thread dump Java HotSpot(TM) Client VM (1.4.2-p6-toor_17_dec_2004_01_31 mixed mode):
"DestroyJavaVM" prio=5 tid=0x08058c00 nid=0x8058000 waiting on condition [0..bfbfc210]
"Java2D Disposer" daemon prio=10 tid=0x0833f200 nid=0x833f800 in Object.wait() [bf822000..bf822d08]
at java.lang.Object.wait(Native Method)
- waiting on <0x2c452208> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:111)
- locked <0x2c452208> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:127)
at sun.java2d.Disposer.run(Disposer.java:100)
at java.lang.Thread.run(Thread.java:534)
"AWT-EventQueue-0" prio=6 tid=0x0839f000 nid=0x839f200 in Object.wait() [bf863000..bf863d08]
at java.lang.Object.wait(Native Method)
- waiting on <0x2ca05360> (a java.awt.EventQueue)
at java.lang.Object.wait(Object.java:429)
at java.awt.EventQueue.getNextEvent(EventQueue.java:339)
- locked <0x2ca05360> (a java.awt.EventQueue)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:162)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)
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