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From Don Hill <justj...@gmail.com>
Subject Re: Tomcat 5.5/HTTPD cluster question
Date Tue, 28 Dec 2010 21:13:27 GMT
We are on 64bit JVM 1.6 the heap is 8GB for each Tomcat instance. The OS is
RHEL 4.0 64 bit

On Tue, Dec 28, 2010 at 7:30 AM, Pid <pid@pidster.com> wrote:

> On 12/27/10 4:42 PM, Don Hill wrote:
> > Thanks.
> >
> > I am trying to get them to migrate. It seems that part of there
> bottleneck
> > could be the MAX clients on HTTPD. They get high volumes at times and
> have
> > like 1800-3000 active sessions. Any other input would be great like
> tuning
> > tomcat to workers and the best strategy to setup a tomcat/httpd env.
> >
> > Don
> >
> > On Mon, Dec 27, 2010 at 9:34 AM, André Warnier <aw@ice-sa.com> wrote:
> >
> >> Don Hill wrote:
> >>
> >>> Hi.
> >>>
> >>> I am working on a tomcat 5.5 cluster which is using ajp/1.3 and mod_jk
> and
> >>> trying to determine the best cluster design given the hardware. I have
> 2
> >>> xeon 2.3 ghz 2 CPU machines with 38GB ram machine. Currently here is
> the
> >>> config I am using. The TOMCAT and HTTPD servers are on the same
> physical
> >>> machine.
> >>>
> >>> Each machine is running HTTPD 1.3 with prefork, the MaxClients is 256
> due
> >>> compiled in limits. Each machine has 4 virtualhosts running through one
> >>> instance of HTTPD. Two of the VHOSTS are the same app running on Tomcat
> >>> 5.5
> >>> with 8GB RAM(configured by customer). The workers are configured to
> each
> >>> VHOST meaning for each machine there are 4 workers defined and one
> worker
> >>> is defined for each VHOST. I will try and depict this below. The
> current
> >>> load balancing is controlled by F5 and manages the load across 2
> machines,
> >>> 4
> >>> VHOST for each app.
> >>>
> >>> Based on this info can someone recommend if this configuration could be
> >>> improved and if so what would you recommend ?
> >>>
> >>>  The very first thing that I would recommend, would be to use the
> current
> >> versions of both httpd and tomcat.  The versions you mention above are
> >> several years old, and no longer being developed, except maybe for
> security
> >> patches.
> >> See : http://httpd.apache.org/docs/1.3/
> >> See : http://tomcat.apache.org/whichversion.html
>
> Are you using a 64bit JVM?
> What version is it?
> Is your OS a 64bit version?
> Which OS is it?
>
>
> p
>

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