IO Other Operations Performance Counter Explanation

Question

I have received perfmon counters from customer site. We noticed unusual values in \\COMPUTERNAME\Process(PROCESS_NAME)\**IO Other Operations/sec**.

The best explanation for the counter I came up with is:-

The average rate at which the process is issuing I/O operations that are neither read nor write operations (for example, a control function). This counter counts all I/O activity generated by the process to include file, network and device I/Os. This counter is equivalent to the perfmon counter Process\IO Other Operations/sec.

On Technet, its description does not appear.

Who knows what this counter (**IO Other Operations/sec**) actually counts? Which system call may cause this counter to be increased and how it can be monitored.

We are working with C++.

Olympic

Answer 1

I don't think a documented list of operations exist as it is too broad. However, you can use the Process Monitor tool to find out what operations are performed by a running process in real-time. If you watch the movement of the I/O Other Operations metric of a process (such as in the Task Manager - Details tab with added column "I/O other"), while having Process Monitor running with a filter on the process PID, this should give you good indications on which operations affects the counter.

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