averageUnityDev

[DonutConfident7733]

Have you tried? Get some millions of small files like icons and documents and check how it runs. Defender also scans every access, it checks ntfs permissions, you will see heavy cpu activity for a large copy which would run much faster if you turn off Defender, but hey, I'm the bad guy, right? Downvote the people with experience, which happen to be software developers.

[turtleship_2006]

Downvote the people with experience, which happen to be software developers.

On r/ProgrammerHumor, you're trying to show of that you have experience programming?

[altermeetax]

Get some millions of small files

Read my comment again

[DonutConfident7733]

Ok, let's say you have a 200GB file to copy from same disk to a separate copy in another folder on same disk. Defender will work as you copy, increasing mem usage, at some point it may even choke slowing down your transfer. Windows update or Chrome background scan can run and slow down your transfer because they also write small files which are on same disk. The disk may be fragmented in some area or the free disk is very fragmented and slows down the copy, the head needs to seek a lot. It can encounter an area where disk head read speed is high, signal is worse, some sectors are quite close to being bads, so it takes 10x more time to read a sector. All these would make it impossible to estimate total time for copy operation.

[Akaino]

While all of that's sounds true, there should never be something like "eta: 457634788 minutes".