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A comment on MinC Is Not Cygwin. Parent comment

Re:MinC Is Not Cygwin by p_ing on Wednesday April 23, 2025 @12:25PM (#43773862)
NTFS/ReFS are not slow. But there is an extensible file system filter layer above them that can slow things down.
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Re:MinC Is Not Cygwin by ormax3 on Wednesday April 23, 2025 @04:18PM (#43776224)
microsoft introduced Dev drives for this reason, they are optimized such that no file system filters are attached

https://learn.microsoft.com/en-us/windows/dev-drive/

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Re:MinC Is Not Cygwin by creatonez on Thursday April 24, 2025 @04:45AM (#43780524)
I thought by filters they quite literally mean the antivirus filters in Defender? Does it strip down some of the Windows file semantics too?
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Re:MinC Is Not Cygwin by p_ing on Thursday April 24, 2025 @01:20PM (#43785163)
File system filters are pluggable kernel drivers. For example, ProcMon (Sysinternals tool) monitors file systems via a file system filter -- so fun fact, if you outright disable file system filters on a ReFS volume, you won't get any ProcMon results! This was a 'duh' moment for me.

https://learn.microsoft.com/en-us/windows-hardware/drivers/i...

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