Re: [Avid-L2] OTish: Is it Mandatory to run Mojave 10_14_6 on an APFS Volume?

That's an interesting article.  I guess file enumeration is playing a big roll.  I had found saving and replacing a very simple textedit file of a paragraph or two of text would give me a spinning beach ball for close two 10 seconds before saving the new file replacing the old one of the same name.  Now I've CCC'd back to the internal drive formatted Mac OS Extended Journaled still running mojave and it saves and replaces immediately.  I learned in the article there was some form of deframentation in the mojave OS but it's off by default.  "

Can't APFS defragmentation help with this?

Apple quietly added a defragmentation feature to APFS in macOS Mojave. APFS defragmentation is disabled by default, and only lightly documented in the diskutil man page. Apple gives no indication of what this defragmentation feature actually does, in particular whether it defragments filesystem structures. Based on the results of the tests above, however, I would conclude that APFS defragmentation does not cause filesystem metadata to be physically clumped together on the disk."

Now that I have the OS on a HFS+ drive I don't know if it would defrag any files that have been fragmented by the APFS architecture.  Time for more googling.  

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