c++ - Programmatically getting per-process disk io statistics on Windows?

Question

I would like to display a list of processes (Windows, C++) and how much they are reading and writing from the disk in KB/sec.

The Resource Monitor of Windows 7 has the ability so I should be able to do the same.

However I have unable to find a relevant API-call or find anything in the perfmon counters. Could anyone point me in the direction?

Answer 1

You can call GetProcessIoCounters to get overall disk I/O data per process - you'll need to keep track of deltas and converting to time-based rate yourself.

This API will tell you total number of I/O operations as well as total bytes.