<-------以上/usr/local/apache请设置为你的路径

编辑httpd.conf
添加：
LoadModule bandwidth_module libexec/mod_bandwidth.so
AddModule mod_bandwidth.c

重启你的apache

相关文档：

Global configuration directives :

    * BandWidthDataDir
      Syntax : BandWidthDataDir <directory>
      Default : "/tmp/apachebw"
      Context : server config

Sets the name of the root directory usedby mod_bandwidth to store its internal temporary information. Don't forget to create the needed directories : <directory>/master and <directory>/link

    * BandWidthModule
      Syntax : BandWidthModule <On|Off>
      Default : Off
      Context : per server config

Enable or disable totaly the whole module. By default, the module is disable so it is safe to compile it in the server anyway.

PLEASE, NOTE THAT IF YOU SET A BANDWIDTH LIMIT INSIDE A VIRTUALHOST BLOCK, YOU ALSO __NEED__ TO PUT THE "BandWidthModule On" DIRECTIVE INSIDE THAT VIRTUALHOST BLOCK !

IF YOU SET BANDWIDTH LIMITS INSIDE DIRECTORY BLOCKS (OUTSIDE OF ANY VIRTUALHOST BLOCK), YOU ONLY NEED TO PUT THE "BandWidthModule On" DIRECTIVE ONCE, OUTSIDE OF ANY VIRTUALHOST OR DIRECTORY BLOCK.

    * BandWidthPulse
      Syntax : BandWidthPulse <microseconds>
      Default :
      Context : per server config

Change the algorithm used to calculate bandwidth and transmit data. In normal mode (old mode), the module try to transmit data in packets of 1KB. That mean that if the bandwidth available is of 512B, the module will transmit 1KB, wait 2 seconds, transmit another 1KB and so one.

Seting a value with "BandWidthPulse", will change the algorithm so that the server will always wait the same amount of time between sending packets but the size of the packets will change. The value is in microseconds. For example, if you set "BandWidthPulse 1000000" (1 sec) and the bandwidth available is of 512B, the sever will transmit 512B, wait 1 second, transmit 512B and so on.

The advantage is a smother flow of data. The disadvantage is a bigger overhead of data transmited for packet header. Setting too small a value (bellow 1/5 of a sec) is not realy useful and will put more load on the system and generate more traffic for packet header.