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Date: Tue, 30 Jan 2007 08:11:32 -0800 (PST)
From: Henk Fictorie <henk.fictorie@kpn.com>
To: users@tomcat.apache.org
Subject: Re: mod_jk - connection_pool_size and connection_pool_minsize
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References: <8708555.post@talk.nabble.com> <45BF3F79.9080208@gmail.com>


Mladen Turk wrote:
> 
> Henk Fictorie wrote:
>> From reading the documentation I understand that connection_pool_size is
>> set
>> to its default value, the ThreadsPerChild setting from Apache.
>> According to the documentation the connection_pool_minsize is only used
>> when
>> the connection_pool_size is specified. Since I didn't specify the
>> connection_pool_size, I conclude that the connection_pool_minsize is not
>> used. But how does it work then? Is there no minimum size for the
>> connection
>> pool and will all connections be freed (after the connection_pool_timeout
>> value)? Or will connections never be freed?
>> 
> 
> default
> connection_pool_minsize = (connection_pool_size + 1) / 2
> Since default connection_pool_size is ThreadsPerChild
> the connection_pool_minsize is ThreadsPerChild/2
> So, when you set the connection_pool_timeout without
> specifying anything else it would behave like
> 
> worker.xxx.connection_pool_size=ThreadsPerChild
> worker.xxx.connection_pool_minsize=ThreadsPerChild/2
> 
> Regards,
> Mladen.
> 

Thanks for the clarification.
The documentation for connection_pool_minsize however creates confusing (for
me at least). The sentence

This property is used only when the connection_pool_size is specified.

could be removed from the documentation as it does not give any help.

regards Henk Fictorie
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