Memory Mapped IO Explanation and Experiment

[@ibrahimshebl5440]

would you please suggest some text book to follow ?

[@parimi001]

Very nice video but how long does this take to sync to disk from memory ?

[@directx872]

How is this different from calling a big read for the entirety of the file and then a big write?

[@harshsharma57]

You're gonna need to store your big read somewhere in the memory (buffer) and that's exactly memory mapped IO

[@directx872]

@@DMWatchesRUclips no. it does not. Read actually reads from disk.
When you map a file to a page in your memory you tell your system to load that page when you are going to read it, as if it was a normal memory page that has been swapped to disk