joyent/libuv — comment on commit bde908f565f9b90f6a18a6ce266cc0c144fd4acb
File: uv-eio.c line 111
By indutny:

So image that some code is creating > 10 eio reqs in libev tick and does it every libev tick (thit isn't imaginary situation, see joyent/node#2508 ).