These only sound like problems if you need to keep it single process. If you break out the javascript interpreter via fastcgi workers just like people do with

These only sound like problems if you need to keep it single process. If you break out the javascript interpreter via fastcgi workers just like people do with php on nginx it becomes mostly moot points right? At that point its limited to 500 req/sec/core, but frankly these days that means 4000 req/s, which, hell, I'll take it. Granted thats assuming you can actually run a fastcgi/v8 setup, I've never looked. I wonder how hard a mod_v8 for apache prefork would be.