Traffic Generators

Siege

Siege is an open source stress / regression test and benchmark utility.

siege -c100 -t30S -d10 -b -v aman.info.tm

Some Extensions

--header="Cookie: SESSb43b2d1d084de3872c89b0b125b64564=Jafuk06rppYAXIxWaU0LY2VmqxN997DsKU3BSgfArCM" 
-f /path/to/some-urls.txt

The some-urls.txt file is just a simple list of URLs on newlines:

http://www.mywebsite.com/about-us
http://www.mywebsite.com/contact-us

Httperf

Installation:

sudo apt install httperf

Usage:

httperf --server waf.avitest.com --port 80 --num-conns 100 --rate 10 --timeout 1

Curl

curl -s -o /dev/null -w "%{http_code}" http://waf.avitest.com
seq 100 | parallel -j0 curl -s -o /dev/null -w "%{http_code}" http://waf.avitest.com

for i in `seq 1 99999`; do echo "Status Code:"; curl -s -o /dev/null -w "%{http_code}" https://10.1.1.1; sleep 1; done

Bash Script

# get output, append HTTP status code in separate line, discard error message
OUT=$( curl -sfI --connect-timeout 1 http://10.52.200.32/ | grep "HTTP" )

# get exit code
RET=$?

if [[ $RET -ne 0 ]] ; then
    echo "Time out: $RET"
else
    echo "$OUT"
fi

while true; do ./monitor.sh; sleep 1; done

Apache Benchmark

ab -t 1 -n 1000 -c 300 http://waf.avitest.com/

Increase Apache MaxClients (now called MaxRequestWorkers in new versions) on Backend Server:

sudo nano /etc/apache2/mods-available/mpm_event.conf
MaxRequestWorkers         1000
ServerLimit         565

Locust

Installation:

sudo apt-get update
sudo apt-get -y install python-pip python-dev libxml2-dev libxslt-dev
sudo pip install locustio

Install pyzmq for tests across multiple servers to increase the testing capacity:

sudo pip install pyzmq

Set file limit to unlimited to ensure there is no OS problems with files at concurrency:

ulimit -n 9999

Locust File

Single “task” which gets a specific webpage:

from locust import HttpLocust, TaskSet, task

class UserBehavior(TaskSet):

    @task
    def get_something(self):
        self.client.get("/something")

class WebsiteUser(HttpLocust):
    task_set = UserBehavior

The test below logs a user in to groupster then requests what will be their home page 1 time for every 3 times it requests a group page:

from locust import HttpLocust, TaskSet

def login(l):
    l.client.post("/login/process", {"email":"me@someemail.com", "pass":"password"})

def index(l):
    l.client.get("/")

def group(l):
    l.client.get("/group/1/")

class UserBehavior(TaskSet):
    tasks = {index:1, group:3}

    def on_start(self):
        login(self)

class WebsiteUser(HttpLocust):
    task_set = UserBehavior
    min_wait=5000
    max_wait=9000

Executing

• Go to the directory with locust file & execute below command:
• This only starts the interface to control the tests it does not actually start a test:

locust -f ./locastfile.py --host=http://somedomain.io --master

Go to the web interface to control the test variables and to start and stop it.

http://localhost:8089

Distributed Mode

• To generate significant load it is almost always necessary to run it in distributed mode.
• Master server do not simulate any user itself.
• For this we have to start one or more slaves using –slave flag
• Both the master and each slave machine, must have a copy of the locust test scripts when running Locust distributed.
• Run below command on each slave nodes as well

 ulimit -n 9999

Start “master” node:

locust --host=http://somedomain.io --master

Then start any “slave” nodes, giving them a reference to the master node:

locust --host=http://somedomain.io --slave --master-host=192.168.10.100

Without WebUI

Runs the cli mode as below:

locust -f locustfile.py --no-web -c 1000 -r 100 --run-time 1h30m

In Distributed mode it will wait until all slave nodes have connected before starting the test:

locust -f locustfile.py --no-web -c 1000 -r 100 --run-time 1h30m --expect-slaves

Slowhttptest

Source: ubuntu.com

This section is under construction.

Bombardier

Source: softwaretester.info

Preparation

sudo apt install -y curl git
curl -O https://storage.googleapis.com/golang/go1.8.linux-amd64.tar.gz
tar xvf go1.8.linux-amd64.tar.gz
sudo chown -R root:root go
sudo mv go /usr/local/

Configure go (for user)

mkdir ~/.go
echo "GOPATH=$HOME/.go" >> ~/.bashrc
echo "export GOPATH" >> ~/.bashrc
echo "PATH=\$PATH:/usr/local/go/bin:\$GOPATH/bin" >> ~/.bashrc

source ~/.bashrc
go version

Install bombardier

go get -u github.com/codesenberg/bombardier
bombardier --help

Usage:

• Run with 10 connections on 5 sec and show latency statistics.

bombardier -d 5s -c 10 -l -k https://www.heise.de

• Test for 60 seconds at 250 Insecure connections per second :

bombardier -c250 -k -d 60s "https://10.70.28.12/tools/healthcheck?api-key=0145463c-df61-4ebe-bbf1-ed3f43t4f57"

References

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