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From "Cammy Ng" <ca...@businetcomm.com>
Subject Re: Apcahe's CPU goes to 100%
Date Thu, 23 May 2002 08:15:39 GMT
Please Post it.

Thanks

----- Original Message -----
From: "David Cassidy" <dcassidy@nisports.com>
To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>
Sent: Friday, May 24, 2002 12:58 AM
Subject: Re: Apcahe's CPU goes to 100%


> please post it !
>
> I have seen this with ajp12 (not using ajp13)
>
> D
>
> Costas Stergiou wrote:
>
> >I have exactly the same experience on this. Actually, If this
> >problem is not solved you cannot use tomcat load-balancing features;
> >thus you cannot setup a real production stable environment!!
> >
> >ajp12 does not have this problem though (I think because it does
> >not keep open sockets).
> >After some minor investigation on the problem, I think that the bug
> >has to do with an infinite loop that the ajp goes in waiting for some
> >data from tomcat whereas tomcat has nothing else to send.
> >I have traced the exact method that this error occurs (a simple while
> >loop) and I think it shouldn't be that hard for someone that knows
> >the code to figure out a solution or a work around...but noone has
> >responded... If someone is interested I can repost my mail where
> >I even give a stack trace of the runaway process.
> >
> >Hope someone gives some time into this, it is a pitty having such
> >a good software such as tomcat and not being able to use it in
> >critical cases.
> >Costas
> >
> >
> >
> >----- Original Message -----
> >From: "Cammy Ng" <cammy@businetcomm.com>
> >To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>
> >Sent: Thursday, May 23, 2002 10:22 AM
> >Subject: Re: Apcahe's CPU goes to 100%
> >
> >
> >
> >
> >>I like Tomcat a lot personally, however, if I cannot get any solution of
> >>this problem, I think I need to start testing other commercial software
> >>
> >>
> >like
> >
> >
> >>Jrun, etc. Since they have there own connector, it may solve this
problem.
> >>
> >>
> >.
> >
> >
> >>I was spending 2 months and look over the internet everywhere,(all news
> >>group, all site talking apache, tomcat, mod_jk) and come up with no
> >>solution. If anyone has solution or answer on this problem Please help
and
> >>post it so that all people can share it..
> >>
> >>Thanks
> >>
> >>----- Original Message -----
> >>From: "Costas Stergiou" <csterg@aias.gr>
> >>To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>
> >>Sent: Thursday, May 23, 2002 11:56 PM
> >>Subject: Re: Apcahe's CPU goes to 100%
> >>
> >>
> >>
> >>
> >>>Many of use have posted this problem here but I see that nobody
> >>>can come up with an answer...
> >>>
> >>>----- Original Message -----
> >>>From: "Cammy Ng" <cammy@businetcomm.com>
> >>>To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>
> >>>Sent: Thursday, May 23, 2002 9:39 AM
> >>>Subject: Re: Apcahe's CPU goes to 100%
> >>>
> >>>
> >>>
> >>>
> >>>>Hi,
> >>>>
> >>>>I have this problem too, but no one seems to answer this problem, I
> >>>>
> >>>>
> >>>believe
> >>>
> >>>
> >>>>it is the mod_jk connector problem. Hope someone will find the
> >>>>
> >>>>
> >solution
> >
> >
> >>>for
> >>>
> >>>
> >>>>this.
> >>>>
> >>>>Thanks
> >>>>Cammy
> >>>>----- Original Message -----
> >>>>From: "Rajesh Mishra" <RajeshM@Cal.InterraIT.COM>
> >>>>To: <tomcat-user@jakarta.apache.org>
> >>>>Sent: Wednesday, May 22, 2002 9:36 PM
> >>>>Subject: Apcahe's CPU goes to 100%
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>>I'm using Apache1.3.12 and Tomcat3.2 for my application.After stress
> >>>>>
> >>>>>
> >>>>testing
> >>>>
> >>>>
> >>>>>for 4 hours , CPU utilization of Apache.exe process goes to 100%.
As
> >>>>>
> >>>>>
> >a
> >
> >
> >>>>>result when I try to access the website , I'm getting timeouts. But
> >>>>>
> >>>>>
> >I
> >
> >
> >>>>could
> >>>>
> >>>>
> >>>>>still access the website with tomcat port.
> >>>>>
> >>>>>Has anyone experienced this problem .I'm using mod_jk for this
> >>>>>
> >>>>>
> >purpose
> >
> >
> >>>>>Regards
> >>>>>Rajesh
> >>>>>
> >>>>>--
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> >>>>
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> >>
> >>
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> >
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