I'm developing an application (.NET 4.0, C#) that:
1. Scans file system.
2. Opens and reads some files.
The app will work in background and should have low impact on the disk usage. It shouldn't bother users if they are doing their usual tasks and the disk usage is high. And vice versa, the app can go faster if nobody is using the disk.
The main issue is I don't know real amount and size of I/O operations because of using API (mapi32.dll) to read files. If I ask API to do something I don't know how many bytes it reads to handle my response.
So the question is how to monitor and manage the disk usage? Including file system scanning and files reading...
Check performance counters that are used by standard Performance Monitor tool? Or any other ways?