Also it does nothing with the disk, but does quite a bit over the network (queueing data, talking to caches). I'm content with 20ms. Hell, I'm content with 10

Also it does nothing with the disk, but does quite a bit over the network (queueing data, talking to caches). I'm content with 20ms. Hell, I'm content with 100ms, as long as its consistent and you can argue the value.