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From Pid <...@pidster.com>
Subject Re: Tomcat 5.5/HTTPD cluster question
Date Wed, 29 Dec 2010 15:21:44 GMT
On 12/28/10 9:13 PM, Don Hill wrote:
> We are on 64bit JVM 1.6 the heap is 8GB for each Tomcat instance. The OS is
> RHEL 4.0 64 bit

Great.  Which versions of HTTPD 1.3 and Tomcat 5.5 are they?


p

> 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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