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List:       jboss-user
Subject:    Re: [JBoss-user] Disabling hot deployment to limit open file
From:       Adrian Brock <Adrian.Brock () HappeningTimes ! com>
Date:       2003-08-31 22:10:56
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<attribute name="ScanEnabled">false</attribute>
Setting the period to 0 will just cause it to spin in a cpu loop.

Are you sure the file handles aren't jasper checking for
changed jsps?
Have you turned off development mode for jasper
in jbossweb-tomcat.sar/META-INF/web.xml?

Regards,
Adrian

On Sun, 2003-08-31 at 22:10, Sheldon Hearn wrote:
> Hi folks,
> 
> Now that I've managed to configure Wintendo 2000 Server to service a
> high number of threads (up to about 7,000 although I'm using fewer than
> that), I'm running into an open handle problem. :-)
> 
> Since I can't figure out how to bump the OS handle limit, I'm trying to
> limit the number of handles used by JBoss-tomcat.
> 
> Using ProcessExplorer[1], I see that a large number of handles (about
> 1,500) are open for files deployed by UrlDeploymentScanner (jar and xml
> files).
> 
> I have the JBoss-3.2.1 book, and have checked the documentation in
> the section "Hot Deployment of Components, the UrlDeploymentScanner".
> 
> I've tried setting ScanPeriod to 0 (not documented to behave the way I
> guessed it might) and the equivalent of 6 hours, and I can't seem to get
> JBoss to release those file handles.
> 
> Is there a way to use UrlDeploymentScanner for initial container boot,
> but to never rescan for deployment updates?  I'm assuming it's the need
> to rescan that causes JBoss to hold these file handles open.
> 
> We don't need the ability to hot deploy or redeploy after container
> boot, and can't anyway because we haven't specified dependencies.
> 
> I realize that an easier solution would be to bump the OS handle limit,
> but my Wintendo Fu is lacking.
> 
> Thanks,
> Sheldon.
> 
> [1] http://www.sysinternals.com/ntw2k/freeware/procexp.shtml
> 
> 
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