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From GOMEZ Henri <>
Subject RE: java <defunct> on native threads under Linux
Date Tue, 05 Sep 2000 06:49:31 GMT
Did you try with IBM JDK ?

Also which Linux release did you have ?

Unix is like a 'hogan' -- no Gates, no Windows, and an Apache inside. 

>-----Original Message-----
>From: Kevin Sangalee []
>Sent: Monday, September 04, 2000 4:52 PM
>Subject: java <defunct> on native threads under Linux
>I've got an issue that's been niggling me for a while, so here goes...
>Under Linux, with a JVM using native threads I have around 20 threads
>running Tomcat. However there seems to be a thread being created and
>zombied that shows up as [java <defunct>] on a 'ps ax' (list all 
>The process ID increases every time, so it seems that the 
>thread is being
>destroyed and another created. This happens every couple of seconds but
>doesn't seem to have much of an adverse effect on the system 
>as a whole.
>I've tested under JDK 1.2.2 and 1.3 and both behave in exactly the same
>way. I'm not using thread pooling. I've seen this behaviour on 
>more than
>one server (every one that uses native threads - green threads might be
>doing the same, but the threads are hidden within the parent 
>process when
>I do a 'ps ax'.
>Does anyone have any thoughts? I've searched extensively for answers to
>this one, and there were some postings relating to JServ on a similar
>issue, but all the postings had expired.

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