How to parse a text file in C# and be io bound?

Question

It is known that if you read data from disc you are IO bound and you can process/parse the read data much faster than you can read it from disc.

But this common wis

Answer 1

I suspect caching is skewing the measurements you are making. The hard disk has RAM that it uses to cache recently accessed data, and so does the operating system.

For a better test, you would need to reboot between tests. I suggest a complete power down to ensure the disk's RAM is also cleared.