This is about a package called 'inotail'.
Tail is a very common command that even basic linux users use.
You might have also seen the tail -f command for tailing the contents of any file continously...and this is very useful for monitoring logs...
But by default tail -f checks the file for updates every one second..whereas inotail uses the inotify property of the kernel to decide if the file needs to be accessed...try this out.
This is supposed to increase system performance for log monitoring purposes.