Re: Zombies and Dead WOAs... Part Two..
Re: Zombies and Dead WOAs... Part Two..
- Subject: Re: Zombies and Dead WOAs... Part Two..
- From: Chuck Hill <email@hidden>
- Date: Thu, 26 Jun 2008 21:35:53 -0700
On Jun 26, 2008, at 9:22 PM, John Lennard wrote:
Okay,
So I will try this again, having been bested by my mail program :-/
I restrained myself from poking fun at you. :-P
I am currently having issues with instances "gumming up" and
seemingly deadlocking and I also noticing lots of Zombie Java
processes being created after an application restarts.
So my questions are really two fold..
Firstly, is it possible to attach Eclipse as a debugger to a remote
running instance in order to see why things are fouling up. I have
read Andrew Lindesay's document on using jdb, but I am hoping that
there may be a way to debug everything in a little more detail.
Worst case, I can pester him since he is in the office next door :-p
I am not sure, but jstack can give you a thread dump which is often
all that you need to know.
The processes that are deadlocking tend to also then not want to be
killed by the monitor and need to be dealt with the good old
fashioned way and need to be killed with a sig KILL...
Two things come immediately to mind:
1. You have created non-daemon threads that are not shutting down
2. Your session sleep() or terminate() is throwing and creating
sessions that never die
A thread dump may help to sort this out.
Secondly, has anybody else seen or experienced these zombie
webobjects processes that appear after monitor/wotaskd restarts. I
have already tried the wonder monitor and wotaskd and these dont
seem to fix anything.
What do you mean by zombie webobjects processes? How are you
restarting monitor/wotaskd. More information on what you are doing /
seeing may help.
I am currenly running on WO 5.3.4 and Tigger Server..
And Tiggers are a wonderful thing!
--
Practical WebObjects - for developers who want to increase their
overall knowledge of WebObjects or who are trying to solve specific
problems.
http://www.global-village.net/products/practical_webobjects
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