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5.3 CLOSE_WAIT problem and multi instance change notification
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5.3 CLOSE_WAIT problem and multi instance change notification


  • Subject: 5.3 CLOSE_WAIT problem and multi instance change notification
  • From: Hordur Thordarson <email@hidden>
  • Date: Tue, 11 Oct 2005 18:52:09 +0000

Hi all,

I have a client who is running an app of mine on OSX Server 10.4 with WebObjects 5.3, and recently we've been having significant problems with the app, probably as the load on the app has been increasing.

Currently there is just 1 instance of the application running. It will run fine for a while after being restarted, but then the app will go into a state where according to top it has > 100 threads as opposed to around 40-70 normally, and it will become unresponsive. Doing a netstat at this point in time shows a lot of connections in a CLOSE_WAIT state and the only way out is to kill the instance and restart the WebObjects service.

Is anyone seeing anything like this with OSX Server 10.4 and WO 5.3 ?

Also, I was wondering if maybe running multiple instances would help with this and wanted to ask what people here are using for multi-instance db change notification. I've read about Project Wonder's ERChangeNotificationJMS and there is some old code from David Neumann of Apple floating around but that's all I've been able to find. Are you guys using ERChangeNotificationJMS or are you using homegrown stuff for multi instance sync ?

Thanks,

Hörður Þ.
Lausn hugbúnaður ehf
Tel. +354-534-5005 / +354-699-1068
Web: http://www.lausn.is

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