Robocopy /MT:?

Hello

I use Robocopy for simple backups. The Win 7 version has an /MT switch which allows you to set the number of threads used for a job.

This might be a daft question but I have read the default number is 8 and this can be changed to up to 128: If I'm using either an I3 or an I5 with only 4 threads, wouldn't I need to set the job to use only 4 and not 10, 20 etc as I have read other users do?

Thanks in advance

philby

 

No, because many threads can run on a given processor core.

Some Robocopy thread links:
http://wikibon.org/wiki/v/Performance_benefits_of_Multithread_Robocopy
http://www.faqforge.com/windows/robocopy-single-and-multithreaded-benchmark-on-windows-7/

 

Thanks MrBrian.

From more reading, it seems I'm confusing 'threads' in OS terms and 'threads' in the sense of "2 cores, 4 threads" etc. in processor terms.

Does that sound about right?

philby

 

There's programmatic threading where the application can setup multiple sub-apps within its own apps space. Thus it can be servicing lots of data queues, rather than waiting around for one queue to complete.

Intels Hyperthreading is running 2 virtual cores from the 1 physical core and requires the OS to be aware of it.

Clear as mud?

 

Yes...the opacity has taken me to TJmax

 

You're welcome .

Yes, that's correct.