Main features
High Performance: the load can be distributed on a cluster of client machines
Multi-protocols using a plugin system: HTTP, WebDAV, SOAP, PostgreSQL, MySQL, LDAP , XMPP/Jabber, BOSH, MQTT and AMQP are currently supported. SSL is also supported.
Several IP addresses can be used on a single machine using the underlying OS IP Aliasing
OS monitoring (CPU, memory and network traffic) using SNMP, Munin or Erlang agents on remote servers.
XML configuration system; several sessions can be used to simulate different type of users. Dynamic sessions can be easily described in XML (this can be used to retrieve at runtime an ID from the server output and use it later in the session).
In order to generate a realistic traffic, user think-times and the arrival rate can be randomize using a probability distribution
HTML reports can be generated during the load to view response times measurement, server CPU, etc.
Tsung is developed in Erlang，运行Tsung，需要相关erlang依赖包支持。
一.安装Tsung
sudo apt-get update
sudo apt-get -y install tsung
或自行下载Tsung源码包安装：http://tsung.erlang-projects.org/
二.启用SNMP agent(snmpd)监视系统运行
- 在目标系统上安装snmpd: apt-get install snmpd
修改配置文档/etc/snmp/snmpd.conf：
1）开启所有监视端访问：注释行agentAddress udp:127.0.0.1:161，然后启用行agentAddress udp:161,udp6:[::1]:161
2)设置snmp agent可监视（OID分支）范围：注释行view systemonly included .1.3.6.1.2.1.1和view systemonly included .1.3.6.1.2.1.25.1，然后添加行view systemonly included .1
3)rocommunity public default -V systemonly行和rocommunity public default -V systemonly行public为默认community，可更改自定义
4)如果在docker中运行snmpd，修改配置文档/etc/snmp/snmpd.conf后，执行service snmpd [command]，这对已启动的snmpd是无效的。因此本人通过重启snmpd所运行的容器(expose 161)，然后再执行service snmpd start是可行的方案
启动snmpd：service snmpd start
监视端安装snmp来检测监视目标系统snmp agent
sudo apt-get install snmp
snmpwalk -v 2c -c public [agent主机名或ip]
三.试运行Tsung并生成统计报告
cd ~
mkdir .tsung
cp /usr/share/doc/tsung/examples/http_simple.xml .tsung/tsung.xml
tsung start
注意事项：
1）/usr/share/doc/tsung/examples：Tsung安装后，该目录下有多种配置文档样例可参考
2）~/.tsung/tsung.xml：默认配置文件。如果该文件不存在，则需添加-f选项，tsung -f myconfigfile.xml start
3）~/.tsung/log：运行命令tsung start后将生成该日志目录
4）本例中monitor type为snmp
5）关于tsung.xml的配置可参考：http://tsung.erlang-projects.org/user_manual/
cenze@kylin:~/.tsung$ ls log
-
cenze@kylin:~/.tsung$ cd log/-
cenze@kylin:~/.tsung/log/-$ /usr/lib/tsung/bin/tsung_stats.pl
warn, last interval () not equal to the first, use the first one ()
No data for Bosh
No data for Match
No data for Event
No data for Async
No data for Errors
cenze@kylin:~/.tsung/log/-$ ls -l
总用量
drwxrwxr-x cenze cenze 1月 : data
-rw-rw-r-- cenze cenze 1月 : gnuplot.log
drwxrwxr-x cenze cenze 1月 : gnuplot_scripts
-rw-rw-r-- cenze cenze 1月 : graph.html
drwxrwxr-x cenze cenze 1月 : images
-rw-rw-r-- cenze cenze 1月 : match.log
-rw-rw-r-- cenze cenze 1月 : report.html
-rw-rw-r-- cenze cenze 1月 : tsung_controller@kylin.log
-rw-rw-r-- cenze cenze 1月 : tsung.log
-rw-rw-r-- cenze cenze 1月 : tsung.xml
注意事项：
1）/usr/lib/tsung/bin/tsung_stats.pl：如果当前目录下不存在tsung.log，则需通过选项--stats 指定统计日志文件，执行该脚本后将在当前目录下生成相关统计报告目录及文档
2）以上为本机上执行的实际情况，点击report.html在浏览器中打开将看到如下界面：
