It's load generator platform designed to test performance of system. In case of tuning system or finding limitation of a system, we need a comfortable and stable tool. It've been developed by Golang, which uses less memory footprint.

There are three components.

1. Web Control, It's rich and simple user interface which helps an user to control Tsunami. It provides several commands including start, restart, stop, metrics and so on.
2. Ocean, It's master node that be used to receive command from an user and control Tsunami(woker node)
3. Tsunami, It's worker node that generates load requests to target

For linux, there are limitations or security that must be unlocked before testing, such as open file, tcp_fin_timeout, tcp_tw_recycle and tcp_tw_reuse

• Open file ,

  check number of open files by using ulimit -n

  setting open files

  ulimit -n 65536

  Setting open files permanently

  open /etc/security/limits.conf add add the below config.

  *               soft    nofile           65536
  *               hard    nofile           65536

• tcp configuration

  checking config

  cat /etc/sysctl.conf |grep "net.ipv4.tcp_fin_timeout"
  cat /etc/sysctl.conf |grep "net.ipv4.tcp_tw_recycle"
  cat /etc/sysctl.conf |grep "net.ipv4.tcp_tw_reuse"

  setting tcp configuration

  echo 5 > /proc/sys/net/ipv4/tcp_fin_timeout
  echo 1 > /proc/sys/net/ipv4/tcp_tw_recycle
  echo 1 > /proc/sys/net/ipv4/tcp_tw_reuse
  

  Note: Not recommend for server side

• Prerequisite for building Tsunami

  apt install make
  
  cd /tmp
  wget https://dl.google.com/go/go1.11.linux-amd64.tar.gz
  
  sudo tar -xvf go1.11.linux-amd64.tar.gz
  sudo mv go /usr/local

• Setting Environment

  export GOROOT=/usr/local/go
  export GOPATH=$HOME/go
  export PATH=$GOPATH/bin:$GOROOT/bin:$PATH
  
  

• external library

  go get github.com/valyala/fasthttp
  

• source code check out source from github.com

  git clone https://github.com/pepsi7959/tsunami.git

• build

  cd tsunami/clients
  make && make install

• set ENV

  vim ~/.bash_profile
  # if /user/local/bin doesn't exist, than add the /usr/local/bin to .bash_profile
  export PATH=/user/local/bin:$PATH

• run

  tsunami --url [url]

• Realtime Monitoing, There monitoring channel to monitor real-time statistics.
• Stand Alone, Use only single binary.
• master node, The master will control all of the workers.
• Independently scaling workers, The workers, which are cloud sources, will be scaling independently.
• Support various protocols, The protocols includes http/https and ldap.