Now the question is what you exactly expect.

In general, setting any thread that does time consuming operations to a high priority is asking for trouble. As for writing to disk, your thread will block any lower priority threads when your thread has anything to do, which you should expect. In reality, this will be when copying data. What's really time consuming is transferring the data to and committing to disk but this does not use the CPU. So both your thread and the driver thread are blocked most of the time and lower priority threads in the system are able to run.

As always, data is king so please benchmark. 

Hi,

Should I reduce my Task's priority before it writes to the hard drive?

Or is it handled like I would expect by the hard drive driver?

For example: a high priority task wants to write a huge file to the hard drive. Does it block other tasks while the operation is ongoing?



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