Well, there is a possible explanation :-)
The static interceptor ( which serves static files ) was never tuned or
optimized. It probably does multiple accesses to disk, while in
Apache there are a number of low-level optimizations, caching, etc.
I am not very interested in spending time tuning the StaticInterceptor - I
would rather spend the same time making sure setting up Tomcat + Apache is
as easy as possible, and just let Apache do what it's designed to (
serve static files ) and tomcat do it's job ( servlets + jsp ) :-)
For "real" production servers I hope you'll use Apache, and for embeding
tomcat in apps or development you don't need 500 requests per seconde.
Feel welcome to contribute any code that would improve the performance,
or use apache for static files :-)
Costin
> Hi,
>
> we tried the apachebench on our solaris system, to check out
> differences between architectures and thereby we found a quite
> interesting behaviour.
>
> When serving a static page, apache uses the whole machine
> resources while tomcat isn't (CPU usage 100% to 20%) and for
> maybe this reason isn't serving at the same speed as apache.
> Is there a limit somewhere in the java net or in tomcat?
>
> We used apachebench with 'ab -c 10 -n 50000
> Config:
> apache with mod_jk, and ajp13 to tomcat.
> Solaris 8
>
> regards, tom
> ------- Apache 1.3.14 serving static page -------
> This is ApacheBench, Version 1.3c <$Revision: 1.38 $> apache-1.3
> Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
> Copyright (c) 1998-1999 The Apache Group, http://www.apache.org/
>
> Server Software: Apache/1.3.14
> Server Hostname: solaris.lgsoft.at
> Server Port: 80
>
> Document Path: /start.html
> Document Length: 2669 bytes
>
> Concurrency Level: 10
> Time taken for tests: 98.686 seconds
> Complete requests: 50000
> Failed requests: 0
> Total transferred: 146255850 bytes
> HTML transferred: 133455338 bytes
> Requests per second: 506.66
> Transfer rate: 1482.03 kb/s received
>
> Connnection Times (ms)
> min avg max
> Connect: 0 0 43
> Processing: 1 19 1289
> Total: 1 19 1332
>
> ------- Tomcat 3.2.1 serving static page -------
> This is ApacheBench, Version 1.3c <$Revision: 1.38 $> apache-1.3
> Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
> Copyright (c) 1998-1999 The Apache Group, http://www.apache.org/
>
> Server Software: Apache/1.3.14
> Server Hostname: solaris.lgsoft.at
> Server Port: 80
>
> Document Path: /pltest/start.html
> Document Length: 2669 bytes
>
> Concurrency Level: 10
> Time taken for tests: 509.877 seconds
> Complete requests: 50000
> Failed requests: 0
> Total transferred: 143600000 bytes
> HTML transferred: 133450000 bytes
> Requests per second: 98.06
> Transfer rate: 281.64 kb/s received
>
> Connnection Times (ms)
> min avg max
> Connect: 0 0 299
> Processing: 94 101 128
> Total: 94 101 427
>
>
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