This sounds like an open case we've had with Sun since October. There
is a problem with asynchronous sockets leaking Non Paged Pool memory on
Windows 2003 Server. According to Sun it only happens on Windows
2003. They said it's not a JRE/JDK or GlassFish bug, it's a Windows
bug. Microsoft has some patches to try and solve it, but none of them
have worked for us. They also said we are one of only two customers who
have reported this issue and they are having difficulty reproducing
it. The other customer recently submitted the source to their full app
to help Sun and Microsoft reproduce the issue.
In Windows task manager, add the "NP Pool" column to processes list. It
will probably be quite high. I've seen our system go down when it was
at 800K, but it has also lived up until 1400K and even 2200K.
For now, we've resorted to restarting SJSAS 9.1 every Friday. Our other
option is to change OS.
Jeanfrancois of the Grizzly subproject can explain in more detail.
Ryan
glassfish_at_javadesktop.org wrote:
> Hello,
>
> I'm having trouble with a web app that suddenly stops responding to requests. My vital stats: Sun Java System Application Server Platform Edition 9.0_01 (build b02-p01) running on Windows Server 2003.
>
> This web app communicates with a bunch of EJBs floating around in the same application server instance when processing requests. This works fine for a while, but after a few dozen requests, the server suddenly stops responding to HTTP requests on the webapp's port (2976). The client browser seems to connect fine, but the server doesn't return anything. The admin console (port 1138) is still perfectly accessible.
>
> I believe I have successfully narrowed this problem down to the following: the servlet is attempting to connect to a stateless EJB, however the MyEjbClass.getEpisodeByID() method seems to not be responding, causing the servlet to idle while it waits for the response.
>
> I started the domain using --verbose, and have attached the jstack dump.
>
> Any pointers on what I might be doing wrong would be well appreciated... thanks!
>
> Regards,
> Ben
> [Message sent by forum member 'bh' (bh)]
>
> http://forums.java.net/jive/thread.jspa?messageID=270698
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