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From Christopher Schultz <ch...@christopherschultz.net>
Subject Re: Tomcat 6 busy threads issue
Date Mon, 10 Jan 2011 19:15:01 GMT
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Kobi,

I can't really help if you don't give me more information

On 1/8/2011 11:36 AM, Kobi Biton wrote:
> On Thu, 2011-01-06 at 12:23 -0500, Christopher Schultz wrote:
>> Okay, that will mean that the second server will handle, at most, 300
>> simultaneous connections. Do you have any per-backend-server connection
>> limits set at the load balancer?

??

>> So, let's do an example so I can get my head around it:
>> 
>> N = 3
>> 
>> Server 1: maxThreads=1000, busy=100
>> Server 2: maxThreads=1000, busy=100
>> Server 3: maxThreads=300,  busy=200
>> 
>> Is that roughly what you observed?
> - Yes 100% Right

Good.

>> Was that consistent over a long period of time?
> - Yep consistent since tomcat start

Ok.

>> Did you observe what kinds of requests were being served
>> on server 3? If some of them were long-running, you may just be
>> observing a natural build-up of work on a server that reliably gets 33%
>> of incoming requests but has some older requests that are still processing.

??

>> What kind of lb are you using?
> Linux ipvsadm basically LVS

Are you sure it's configured properly? Posting the details of your
configuration would go a long way towards solving your problem.

- -chris
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