Salut,
ToMaZ ® wrote:
> Hi there,
> thank you very much for your quick answer, you're the man
>
>
> But I’m very sorry – in my country – I am from Europe, Slovenia ... it's
> Friday evening, and me and my testing team and testing environment will
> be available together again in Monday, so I'll give you the answer then
> ASAP.
Take your time.
>
> But – you said:
> /I think you are facing a JDK issue on Linux. Before we deep dive .../
> Can you point me on a few links, or maybe second steps, what I can do, I
> can read till Monday .
> We are using the latest distribution of RedHat – might be right, that
> might be the problem. There is not a problem to use the newest JDK … GF
> – whatever you will recommend.
Yes, see:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6403933
I've filled that issue awhile ago an it got fixed in JDK 7 (b55 and up)
and JDK 6 u18 (not yet released).
Thanks
-- Jeanfrancois
>
>
> Thanks again
>
> ToMaZ
>
> Jeanfrancois Arcand-2 wrote:
>
> Salut,
> ToMaZ ® wrote:
> > Hello to Comet users, a very nice piece of technology I might
> say, very
> > handy.
> >
> > We are having this high CPU issue with Comet: After few hours some
> > times, we get a 100% CPU usage for one of the server’s CPUs – on
> which
> > is our PushNotificationHandler app.
> > It is based on code:
> >
> http://weblogs.java.net/blog/driscoll/archive/2008/05/dead_simple_com.html.
>
> > Very simple - nothing special...
> >
> > But we have problems when we are testing our App - like:
> >
> http://www.nabble.com/Comet-handler-starts-terminating-TCP-connections-with-RST--td20337445.html
>
> > >
> > http://www.nabble.com/do-select-spin-on-linux-td22974389.html
> >
> http://www.nabble.com/Comet---Selector-spinning---100--CPU-td23142529.html
> >
> > Our environment is Sun GlassFish 9.1.1. – the latest, but our test
> > procedure is maybe wrong – because we just create a request ...
> (like
> > request on page
> >
> -http://weblogs.java.net/blog/driscoll/archive/2008/05/dead_simple_com.html),
>
> > with Apache JMeter – there is no real browser actually.
>
> That should not make a difference.
>
> >
> > *QUESTIONS: *
> > a.) I think – that might be the problem ... that Comet is trying to
> > establish the connection ... and because of that (no real browser
> > behind) we have an issue of CPU usage after some time ... Could
> it be it ?
> > b.) How to solve that, can you show me on the example
> >
> (http://weblogs.java.net/blog/driscoll/archive/2008/05/dead_simple_com.html)
>
> >
> > c.) Any other suggestions, why we have »CPU leak« or how to turn
> around
> > code – or maybe point me to a another example?
> > d.) How to see, to check, if the browser is down ... to close the
> > »pipe«, is that done automatically?
>
> I think you are facing a JDK issue on Linux. Before we deep dive, would
> you try the following. Dowload Grizzly 1.0.30 from here:
>
> * http://is.gd/3FsOs
>
> Then stop GlassFish, edit domain.xmk by adding:
>
>
>
> This contains the fix for the spinning selector. Let's see if that
> solve
> your problem.
>
> >
> > *Thank you very much in advance*, before we have used DWR on
> Tomcat, but
> > on GlassFish of course we want to use Grizzly.
>
> Great!! If you need to still support Tomcat, I recommend you take a
> look
> at my new project:
>
> * http://atmosphere.dev.java.net
>
> It's the concept developed when I was working on Grizzly Comet, buy
> works in all web server including GlassFish 1/2/3 and Tomcat 4/5/6
>
> A+
>
> -- Jeanfrancois
>
>
> >
> ------------------------------------------------------------------------
>
> > View this message in context: CPU issue with Grizzly Comet On
> GlassFish
> > 9.1.1.
> >
> > Sent from the Grizzly - Users mailing list archive
> > at Nabble.com.
>
>
> ------------------------------------------------------------------------
> View this message in context: Re: CPU issue with Grizzly Comet On
> GlassFish 9.1.1.
> <http://www.nabble.com/CPU-issue-with-Grizzly-Comet-On-GlassFish-9.1.1.-tp25615856p25617086.html>
> Sent from the Grizzly - Users mailing list archive
> <http://www.nabble.com/Grizzly---Users-f23249.html> at Nabble.com.