this post was submitted on 05 Jul 2023
        
      
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But Windows also does pre caching?
It probably just didn't mark that memory as "used" in the task manager.
I discovered this about 20yrs ago and there's been a lot of drugs & drink since then.
I do remember I could open my shit-hot 256Mb RAM desktop with Windows XP taskmanager and it shows a whopping 128Mb free RAM. ๐
Then I'd boot into my '733T H4X0r' Suse Linux 7.3 and top would show 5Mb free RAM. ๐ฑ
This caused much upset until I found out the two OS's have (had?) fundamentally different memory utilisation philosophies.
May not be the case anymore but it was late 90s/early 00s.