[jashkenas]

Ok -- you got it. I've updated the gist with the same template running through Express.

https://gist.github.com/3905579

Take note that the margin of variance on these numbers is several hundred, so don't read too much into small shifts ... but:

With Express, and "c=1", I get 1,876 requests per second.

With Express, and "c=10", I get 2,730 requests per second.

There isn't meaningful overhead imposed by Express for this particular simple template rendering.