[Buildbot-devel] Another twisted server is running

[Roy S. Rapoport]

As is typical for the dev to production move, we've found a problem in
production that did not exist during our testing of buildbot.

In dev, we had about 8 builders; in production now, we have 157 builders.
When I attempt to restart the master via 'buildbot restart .', I get

---
builder at controller$ buildbot restart .
never saw process go away
now restarting buildbot process..
Another twistd server is running, PID 24594

This could either be a previously started instance of your application or a
different application entirely. To start a new one, either run it in some
other directory, or use the --pidfile and --logfile parameters to avoid
clashes.  
---

And then, when I attempt to find 24594, I find that this pid in fact no
longer exists.

I suspect some sort of part of restarting that takes much longer when
you've got 157 builders than normal, and buildbot's not waiting long
enough.  Any suggestions as to what I can do? Is there any information I
can submit to help debug this issue?

-roy