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From "Joe Zendle" <joe.zen...@vericept.com>
Subject RE: tomcat jitters, then hangs - please help
Date Mon, 13 Oct 2003 19:59:33 GMT
We had the same problem w/ TC 4.1.27, sun jvm 1.4.2 and redhat 9. The
thing wouldn't work for more than about 12 hours. IMHO, there are some
fundamental problems with tomcat as of late. Hate to say it but we
solved the problem by throwing away tomcat and using jetty! We are very
pleased so far. Jetty is very fast and about 1/3 the memory footprint.

Good luck.

-----Original Message-----
From: Noam Camiel [mailto:noam@mdrm.com] 
Sent: Monday, April 07, 2003 5:09 AM
To: Tomcat Users List
Subject: Re: tomcat jitters, then hangs - please help


On Thursday, October 09, 2003 10:39 PM "Remy Maucherat" <remm@jboss.org>
wrote:
> It is very surprising that the connector will manage to exit the
accept
> loop without logging some kind of error (which would be in
catalina.out,
> rather than in the main logs). Do you see some stack trace originating
> from the PoolTcpEndpoint or ThreadPool classes ?

There were no logs indicating this, and actually, after the server
started
there are no other logs appearing in catalina.out

> No idea at this point. Most (all) such reports were for RH 9. All also
> mention a period of about a day before an incident.

Thanks, let me know if there's any news.
Regards,
Noam



----- Original Message -----
From: "Remy Maucherat" <remm@jboss.org>
To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>
Sent: Thursday, October 09, 2003 10:39 PM
Subject: Re: tomcat jitters, then hangs - please help


> Noam Camiel wrote:
> > On Thursday, October 09, 2003 5:11 PM "Ryan Lissack"
> > <rlissack@buildonline.com> wrote:
> >
> >>Hi Noam,
> >>
> >>We have experienced similar problems.  You will notice in the thread
dump
> >>that there is no thread from the connectors thread pool waiting on
an
> >>accept
> >
> >
> > I see your what you mean, I compared the thread dump to a "good"
dump
when
> > the server is operational and there indeed I found a thread from the
> > connectors thread pool waiting on accept:
> >
> > 3XMTHREADINFO      "http80-Processor24" (TID:0x100688E0,
> > sys_thread_t:0x87810C0, state:R, native ID:0x41CCCF40) prio=5
> > 4XESTACKTRACE          at
java.net.PlainSocketImpl.socketAccept(Native
> > Method)
> >
> > This does not appear to exist in the "bad" dump.
>
> It is very surprising that the connector will manage to exit the
accept
> loop without logging some kind of error (which would be in
catalina.out,
> rather than in the main logs). Do you see some stack trace originating
> from the PoolTcpEndpoint or ThreadPool classes ?
>
> >>What OS are you on, RH9??
> >
> > Yes, Im on RH9.
> >
> > Any ideas why this could happen?  could it be some system resource
limit?
> > Is your application an intensive app? My application is not an
intensive
one
> > and the hangs occur hours after i start the server (usually a day
later).
>
> No idea at this point. Most (all) such reports were for RH 9. All also
> mention a period of about a day before an incident.
>
> --
> xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Re'my Maucherat
> Senior Developer & Consultant
> JBoss Group (Europe) Sa`RL
> xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>
>
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