标题：Apache服务器性能评测
出处：沧海一粟
时间：Tue, 24 Mar 2009 14:13:26 +0000
作者：jed
地址：http://www.dzhope.com/post/565/

内容：
为了客观的了解Apache的服务器性能，在此选取Apache自带的性能测试软件ApacheBench, Version 2.0.40-dev and  Version 2.3 分别作为性能测试工具。

1.比较现有T2000 Apache2.2.8经过优化前后的效果
Webserver IP：10.56.234.31
优化前httpd.conf：
----------------------------------------------------------------------
           StartServers        10
           MinSpareServers     50
           MaxSpareServers    100
           ServerLimit     10000
           MaxClients        10000
           MaxRequestsPerChild  0
----------------------------------------------------------------------
优化后httpd.conf：
----------------------------------------------------------------------
           StartServers        150
           MinSpareServers     10
           MaxSpareServers    20
           ServerLimit     20000
           MaxClients        20000
           MaxRequestsPerChild 10000
----------------------------------------------------------------------
测试命令： /opt/apache2.2.8/bin/ab -n 10000 -c 1000 
http://127.0.0.1/pete/20kb/automot.jpg
测试方法： 访问20kb的jpg图片来获取tps数据，为了排除网络因素，选取127.0.0.1本地环路地址。
测试结果：
    ----------------------------------------------
    使用ApacheBench v2.0进行测试
    apache2.2.8(20k) 优化前 1657tps
    apache2.2.8(20k) 优化后 1666tps
    --------------------------------------------- 
    使用 ApacheBench v2.3进行测试
    apache2.2.8(20k) 优化前 1765tps
    apache2.2.8(20k) 优化后 1822tps
    -----------------------------------------------
测试结论：由于这个Apache2.2.8版本没有编入worker.c模块，无法进行worker优化。但是，单独就对prefork的优化，发现性能提升很小。基本保持以后的水平。同时我们发现，测试结果受到T2000机器状态影响很大。所以，本测试基本在没有其他压力的情况下进行。


2.比较现有T2000上Apache2.2.8和Apache2.2.11优化后的性能
Webserver IP：10.56.234.31
配置：
a. Apache2.2.8优化后配置请见step1
b.Apache2.2.11中对于httpd-mpm.conf优化：
----------------------------------------------------------------------

# prefork MPM
# StartServers: number of server processes to start
# MinSpareServers: minimum number of server processes which are kept spare
# MaxSpareServers: maximum number of server processes which are kept spare
# ServerLimit: maximum value for MaxClients for the lifetime of the server
# MaxClients: maximum number of server processes allowed to start
# MaxRequestsPerChild: maximum number of requests a server process serves
StartServers       150
MinSpareServers    10
MaxSpareServers    20
ServerLimit        20000
MaxClients         20000
MaxRequestsPerChild 10000
# worker MPM
# StartServers: initial number of server processes to start
# MaxClients: maximum number of simultaneous client connections
# MinSpareThreads: minimum number of worker threads which are kept spare
# MaxSpareThreads: maximum number of worker threads which are kept spare
# ThreadsPerChild: constant number of worker threads in each server process
# MaxRequestsPerChild: maximum number of requests a server process serves
StartServers         2
MaxClients         1500
MinSpareThreads     25
MaxSpareThreads     75
ThreadsPerChild     25
MaxRequestsPerChild  0


 


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