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From "Bill Barker" <wbar...@wilshire.com>
Subject Re: It*s amazing, apache make TC performance decrease dramatically.
Date Fri, 06 Jun 2008 02:57:20 GMT
You haven't given your O/S details, but yes, AJP will s*ck big time on older 
Linux kernals with this test.  Older kernals can't handle having 1000+ 
threads active efficiently.  You could try testing again with the APR and/or 
(experimental) NIO AJP Connectors.  These usually get the difference down to 
somewhat acceptable.

However, using Apache+mod_jk just to increase performance is a myth, based 
on the state of Tomcat 8+ years ago ;).  It will almost always be slower 
with any current version.

"Zufeng Huang" <ponderh@yahoo.com> wrote in message 
news:696733.50468.qm@web90508.mail.mud.yahoo.com...
>
>  Hi, all
>
>  I post a topic about the performance of apache+mod_jk_tomcat yesterday, 
> and just now, I tried apache ab as the tool to do a benchmark. But the 
> result is amazing.
>
>  My steps:
>
>  1, Using a jsp as the target ONE.
>  1.1, ab 每n 25000 每c 1000 URL_via_apache
>  Concurrency Level:      1000
>  Time taken for tests:   410.105255 seconds
>  Complete requests:      25000
>
>
>  1.2,ab 每n 25000 每c 1000 URL_direct_to_tomcat
>  Concurrency Level:      1000
>  Time taken for tests:   12.297322 seconds
>  Complete requests:      25000
>
>  2, Using a html page as the target TWO.
>  2.1, ab 每n 25000 每c 1000 URL_via_apache
>  Concurrency Level:      1000
>  Time taken for tests:   25.655253 seconds
>  Complete requests:      25000
>
>  2.2, ab 每n 25000 每c 1000 URL_direct_to_tomcat
>  Concurrency Level:      1000
>  Time taken for tests:   24.132493 seconds
>  Complete requests:      25000
>
>
>  So,,,, this really make me amazing and there are two questions:
>
>  1, According to my configurations, apache(2.2.4) has NO advantage against 
> tomcat(5.5.15) in processing static content.
>
>  2, In processing dynamic content, apache make performance decrease 
> dramatically.
>
>  It*s the matter of MPM-prefork/worker???
>
>
>  FYI:
>  <IfModule prefork.c>
>  StartServers 50
>  MinSpareServers 50
>  MaxSpareServers 100
>  ServerLimit 2000
>  MaxClients 1500
>  MaxRequestsPerChild 0
>  </IfModule>
>
>   ------------------------------
>  maxThreads="1500" minSpareThreads="20" maxSpareThreads="50"
>  enableLookups="false" redirectPort="8443" acceptCount="300"
>
>
>
> 




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