[albertzeyer]

We could use the thread pool for blocking primitives and otherwise use the native AIO primitives, couldn't we?

And the higher throughput seemed only to be a problem on MacOSX, so we could fallback to the thread pool there, but use the async IO on Windows and Linux.

[laggyluke]

I thought that's basically what libuv does: it uses AIO on platforms that support it, falling back to thread pool on platforms that don't.

Edit: apparently I was wrong.