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From Igor Cicimov <>
Subject Re: Help in diagnosing server unresponsiveness
Date Sun, 03 Feb 2013 07:40:09 GMT
On 03/02/2013 3:17 PM, "Zoran Avtarovski" <> wrote:
> Hi Howard,
> The move to linux was part of a move in-house for our client as the web
> services are only accessible behind the firewall.
> My gut feeling is that the issue isn't related to the WS as they run on a
> scheduled task 3 times a day. I think the issue lies in our app and
> struggling with not being able to see exactly what's happening during the
> crash. JavaMelody provides some insight but just not enough.

Norhing in the catalina.out or app specific logs?

> I'm quite happy to post the charts for others to see. Just not sure what
> the best way to do it is.
> Z.
> On 3/02/13 3:11 PM, "Howard W. Smith, Jr." <> wrote:
> >I know this is asking for too much or might be impossible to do but
> >process
> >of elimination.. If it was possible to eliminate or prevent web services
> >from executing or being accessed, and no spikes occur, then problem is
> >there. I think you said earlier that system was stable on Windows and
> >migration to Linux was driven by the web services requirement. I wonder
> >what kind of processing in those web services which may be causing this.
> >lot of database access, even more database access now because of web
> >services? Did some developer try to add a manual call to gc, somewhere in
> >the app to free resources. Maybe you can poll any / all developers or
> >search code accordingly. Does the spike occur at certain time of day,
> >maybe
> >some code executed on schedule, or does it occur after certain activity
> >occur in the app either by endusers or background processing?
> >
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