Re: Growing WOWorkerThread Problem

Just a hunch but double check your listen queue settings.
Command Line parameter  " -WOListenQueueSize 5"

We had a problem once where under heavy load transactions would time out and
hang. This would cause more connections and attempts to be queued up as the
system retried after timeout. But ... since we had set the listen queue too
high it would basically queue up too many attempts for anything to ever
recover. The only way to fix it was to kill the app. Make sure your listen
queue is set somewhere reasonable like the suggested default (5).



On 6/23/06, Fred Wells <[email protected]> wrote:
>
> Hello all,
>
> We are having a significant problem with all of our WO app with
> WOWorkerThreads.
>
> We get this message in our logs:
> <com.webobjects.appserver._private.WODefaultAdaptor>: Growing number of
> WOWorkerThreads to 32
> and when it gets particularly hungry:
> <com.webobjects.appserver._private.WODefaultAdaptor>: Growing number of
> WOWorkerThreads to 64
>
> The problem is, is this will completely render the app useless. If you are
> in a session you will get no response from the server and eventually the
> browser will give up. Or will bring up the first page[login in all of our
> apps] and then hang. There will be no indication of anything wrong in the
> logs except for the aformentioned 'Growing..' business. The only way to
> recover is to do a force quit through JavaMonitor or kill the process
> command line.
>
> The only sort of clue that we have is that we can sort recreate in two
> distinct activities:
> Heavy SQL queries [this is more random and not as consistent]
> Using thrird party jar to interact with another application:
> specifically Adobe Document Server.
>
> If anybody has encountered anything like this and has some insight that
> would be great.
>
> -thanks
>
>
> Frederick Wells
> Capps Digital
> 35 W Wacker
> 30th Fl.
> Chicago, IL
> 312.220.3056
> www.cappsdigital.com
> _______________________________________________
> WebObjects-dev mailing list
> [email protected]
> http://www.omnigroup.com/mailman/listinfo/webobjects-dev
>

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