Linux下限制网卡的带宽,可用来模拟服务器带宽耗尽,从而测试服务器在此时的访问效果。
1、安装iproute yum -y install iproute
2、限制eth0网卡的带宽为50kbit: /sbin/tc qdisc add dev eth0 root tbf rate 50kbit latency 50ms burst 1000
3、限制带宽为50kbit后,在百兆局域网中wget下载一个大文件: [root@localhost ~]# wget http://192.168.1.7/test.zip
--19:40:27-- http://192.168.1.7/test.zip Connecting to 192.168.1.7:80... connected. HTTP request sent, awaiting response... 200 OK Length: 23862312 (23M) [application/zip] Saving to: `test.zip' 37% [=======> ] 8,994,816 457K/s eta 27s 下载速度为457K/s,限制效果达到。 4、解除eth0网卡的带宽限制: /sbin/tc qdisc del dev eth0 root tbf
5、对比:未作带宽限制情况下,在百兆局域网中wget下载一个大文件: [root@localhost ~]# wget http://192.168.1.7/test.zip
--19:44:33-- http://192.168.1.7/test.zip Connecting to 192.168.1.7:80... connected. HTTP request sent, awaiting response... 200 OK Length: 23862312 (23M) [application/zip] Saving to: `test.zip' 100%[==========>] 23,862,312 6.14M/s in 3.7s 19:44:36 (6.16 MB/s) - `test.zip' saved [23862312/23862312] |
|
来自: 忧郁_小刚 > 《raid lvm》