Feature: signal vegeta to increase/decrease attack rate

[mikz]

Would be great if vegeta could receive signals (TTIN/TTOU)[http://unicorn.bogomips.org/SIGNALS.html] to increase rate during the attack.

This could be used to simulate traffic waves.

[tsenart]

It's an interesting idea to use non-constant functions for request rate but using signals as an interface for such isn't. I will have consider the best way to implement this.

[ghost]

Dynamic ramp-up suggested by @mikz would be a worthwhile addition.

[tsenart]

The control mechanism for a running attack doesn't fit well with Unix signals. I will implement an HTTP server which listens for commands while the attack is running.

[MarStarck]

How about this feature now? It sounds really useful
I can just use atk.Stop and atk.Start to change the rate, but this restart is not fluent.

[ghost]

Solution from @tsenart.
https://github.com/bbc/FOSS-Load-Tools/blob/master/vegeta/vegeta.md#ramp-up

I think either @tsenart is too busy with something else or is just happy with his work the way it is. Probably a bit of both. Vegeta is solid basic URL basher which I think was it's intention. Speak to me privately if you are not happy with this solution. My email is on my profile.

[daluu]

One could also expand on the mentioned solution with the distributed vegeta attack method https://github.com/tsenart/vegeta#usage-distributed-attacks, although it doesn't have to be implemented exactly like that example but taking that similar approach.

[tsenart]

Ramp-up is easily doable with a little shell script. This is a documentation problem. See: #304