Robocopy appears to do nothing when /MT flag is used -

Robocopy appears to do nothing when /MT flag is used -

this command works:

robocopy \\build7\d$ d: *.* /mir /xd "system volume information" /xd "$recycle.bin"

but when seek adding /mt flag:

robocopy \\build7\d$ d: *.* /mir /xd "system volume information" /xd "$recycle.bin" /mt

the output

------------------------------------------------------------------------------- robocopy :: robust file re-create windows ------------------------------------------------------------------------------- started : thu apr 09 09:11:27 2015 source : \\build7\d$\ dest : d:\ files : *.* exc dirs : scheme volume info $recycle.bin options : *.* /s /e /copy:dat /purge /mir /mt:8 /r:1000000 /w:30 ------------------------------------------------------------------------------

it gives me output, , sits there.

i tried using /log flag redirect output file, still sat there same output, in file.

is doing in background can't see, or doing wrong?

in experience, seeing normal. when robocopy runs using multiple threads (/mt), output limited exceptions (new file, dir, error, etc...). not show directory names file count used seeing. means if target largely in-sync source, not see much output.

i don't know why case. assume robocopy handles directory walking differently when there multiple threads involved. difference makes normal output impossible (or meaningless) produce.

when running robocopy multiple threads, utilize disk tab in windows resource monitor see robocopy doing. how utilize resource monitor

robocopy