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Message-ID: <20060812181511.15735.qmail@web54107.mail.yahoo.com>
Date: Sat, 12 Aug 2006 11:15:11 -0700 (PDT)
From: Qingshan Xie <xieq_49@yahoo.com>
To: users@httpd.apache.org, Joshua Slive <joshua@slive.ca>
In-Reply-To: <e498c1660608100641i5959775et263b2c2196bff4c7@mail.gmail.com>
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Subject: Re: [users@httpd] WebServer slower after turned on KeepAlive

Joshua,  I re-read your comment, have couple questions
inserted below.  Could you please help me again?

Thx, Q.Xie

--- Joshua Slive <joshua@slive.ca> wrote:
...... 
> If the load-testing clients are not using 
> keep-alives, the server will
> almost certainly be slower with keep-alives turned
> on, because a bunch
> of your processes will be stuck waiting for requests
> on keep-alive connections that never come.  

  I am not clear here.  Since our load-test kept
sending the requests continually, the children with
keep-alive connections should not be stuck in waiting
for requests. Am I right?  still not clear why
keep-alive slows down the performance?

  I also think, if the number of free/available
children is big engough, a portion of children being
stuck waiting for requests on keep-alive connections
should not slow down the performance, right?

> ...... A better solution in development in 2.2/2.3 
> is the event mpm, which transfers keep-alive
> processing to a separate thread where it doesn't tie
> up the worker threads.

Event mpm is really the one we are looking for. 
However, it seems still a experimental MPM.  Could you
tell me how stable event mpm in 2.2/2.3?

Many Thanks, 
Q.Xie

> 
> Joshua.
> 
>
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