Apache benchmark failed request on Connect?

0
votes

Im trying to stress test my server. I started using JMeter but this did did not work like i wished. Im trying the same with apache benchmark but run on a failed request i just dont know what it means.

I tried stressing it with:

ab -n 10000 -c 2000 and works like a charm (Atleast zero errors)

ab -b 20000 -c 5000 worked most of the times but got one time the following result:

Completed requests: 20000 Failed requests: 7 (Connect: 7, Receive: 0, Length: 0, Exceptions: 0)

So what does this Connect error mean? Tried it again few minuts later and got 0 failed request..

Turns out running ab -n 40000 -c 10000 is not working because xampp crashes.

Also, is it true that my server has to fail at some point? Or is it just good it aint crashing.

As we speak i am running over 1500 threads with JMeter for more than 2 hours now, nothing goes wrong so far..

1
apachejmeterapachebench

1 Answers

0
votes

Take particilar attention to -c in ab its equivalent is the number of threads in JMeter provided your script in JMeter is very basic (one same request).

If this works fine:

  • ab -n 10000 -c 2000

It is fine that a jmeter script with 1500 threadq works fine, a JMeter equivalent to the above ab command is 2000 threads with loop count to 5

Also it is regular that the more you increase -c the more your server faces errors.

Also once you have a high number of threads in JMeter ensure you follow best-practices.

Finally ab is more for basic load simulation, jmeter for realistic and complex navigation scenarios.