Add reactor aliveness check from U1

[Sidnei da Silva]

We should move the reactor aliveness check from U1 into txstatsd, and report the reactor delay as a metric.

[Ian Wilkinson (theiw)]

I don't think txstatsd is the appropriate place for this.

The reactor inspector should find its way into some twisted-utils project, or possibly, proposed to the Twisted project.

[Sidnei da Silva (sidnei)]

On Mon, Oct 31, 2011 at 9:04 AM, Ian Wilkinson
<email address hidden> wrote:
> I don't think txstatsd is the appropriate place for this.

Why not? We're generating metrics on the number of writers and
readers. We can just as well report the reactor delay.

[Ian Wilkinson (theiw)]

This was about the reactor inspector becoming a reusable module. Hence the mention of a separate project, and for it to be a dependency for txstatsd.

I think it good to employ it in txstatsd; I just think it better to have it as a separate dependency.