The ipc is too slow for large strings

[Matt Jones]

The shared memory / stdio based ipc is too slow and has size limitations. This makes it bad for large requests and files.

Plus it has performance problems:
. It isn't a good idea to block the server with requests reading
. Having to read the requests and send it to another process that reads it again is redundant

[Matt Jones (workhorsy)]

We should use unix sockets. One process can accept connections, then send them to another process for reading and writing.

See this for an example:
http://lists.canonical.org/pipermail/kragen-hacks/2002-January/000292.html

[Matt Jones (workhorsy)]

Now we are not using IPC for anything.

We should use IPC to read the stdio from the application processes.

[Matt Jones (workhorsy)]

Fixed. We no longer use shared memory for the ipc of requests or logging.