No surprise.
2007-01-20, by David H. creator of Rails:
(15:11:12) DHH: before fastthread we had ~400 restarts/day
(15:11:22) DHH: now we have perhaps 10
(15:11:29) Zed S.: oh nice
(15:11:33) Zed S.: and that's still fastcgi right?
The main Rails application that DHH created required restarting ~400 times/day.
As Zed said, it was fastcgi. But yeah, Rails 1.x got a lot of hype before it had a functional application server.