I'm going to guess copy-on-write is 90% of what makes it fast: "To be fair, Appl... | Hacker News

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mmastrac on July 16, 2018 | parent | context | favorite | on: MacBook Pro 13" Touch Bar 2018 Teardown

I'm going to guess copy-on-write is 90% of what makes it fast:

"To be fair, Apple’s relatively new APFS file system is designed to speed up file copies using a technology Apple calls Instant Cloning. But a win is a win."

MBCook on July 16, 2018 [–]

Copy on write should be WAY faster than that.

These numbers are similar to the iMac Pro, which uses a similar setup (T2, multiple flash chips).

I don’t think the benchmark was dumb enough to just be ‘cp fileOne fileTwo’, they would have taken the APFS instant copy into account.

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