CGROUP+TC bandwidth throttling for a single process

Yesterday there was a need to have a bandwidth limit on a process, learning CGROUP+TC

The approximate process is as follows

First, TC.

TC the approximate process is as follows: Root is qdisc---category that is, root there will be a lot of classification we call him class, which defines the rules, that is, the bandwidth limit of how much----filter which is used to specify which category

Cgroup

Understanding as a container, doing system resource control

1. Yum Install Libcgroup

2. Mount-t cgroup net_cls -o net_cls /cgroup/net_cls/

#!/bin/bash

#这个脚本是tc与cgroup结合来限制一个进程的流量

#注意: Before executing this script, please make sure that this machine is not deployed TC flow control before

#或者之前部署的流量控制已经不用了.

#这个脚本会先清空之前部署的流量控制, and then execute the commands in the script.

#这个脚本需要传入两个参数

#参数一是设备标记, that's the process, which is the card that goes out

#参数二是流量限制的大小, Unit Mbps, M/s

#执行这个脚本之前应该先对cgroup进行配置, the configuration process is as follows:

#1. Make sure the Cgroup is turned on.

#2. Add a hierarchy group to the subsystem Net_cls, as follows:

# cd/cgroup/net_cls/

# mkdir Group

#3. Write the classid of the queue to the Net_cls.classid file in the group layer, as follows:

# Cd/cgroup/net_cls/group

# echo 0x00010002>net_cls.classid

# The 0x00010002 here means that ClassID is 1:2.

# If you want to change to 1:3, you can: Echo 0x00010003>net_cls.classid

# The ClassID here are classified as below ClassID

#4. To put the process into Cgroup, here is an example of MySQL import:

# cgexec-g Net_cls:group mysqlimport--lock-tables=false-c-H ip-p 3306-u Root-pmima--default-character-set=ut F8-f-R--local inputtest--fiel

Ds-optionally-enclosed-by= "\" "--fields-terminated-by=", '--lines-terminated-by= "\ r \ n" test.csv

If [$#-lt 2]; Then

echo "Parameter Error"

echo "./trffic_limit_cgroup.sh Dev Limit"

Exit

Fi

Dev=$1

Limit=$2

TC Qdisc del Dev $DEV root

TC Qdisc Add dev $DEV root handle 1:HTB

TC class Add dev $DEV parent 1:classid 1:htb rate 1000mbit ceil 1000mbit

TC class Add dev $DEV parent 1:classid 1:2 HTB rate ${limit}mbit

TC Filter Add dev $DEV protocol IP parent 1:0 prio 1 handle 1:2 Cgroup

How to test

Install IPERF Network Quality test

Http://linux.chinaunix.net/techdoc/system/2008/07/03/1014733.shtml

Use Iperf as server and Test side

Service-Side Iperf-s

Execute dstat on client and open an interface to execute cgexec-g net_cls:group iperf-c IP

This article is from the "Expect batch Sync data" blog, so be sure to keep this source http://4249964.blog.51cto.com/4239964/1563868

CGROUP+TC bandwidth throttling for a single process