[Bug 13266] Writing of files to Apple's new "AP" controller model SSD's takes 4x longer.

samba-bugs at samba.org samba-bugs at samba.org
Thu Feb 22 20:17:19 UTC 2018


--- Comment #4 from Chris Tipper <chris.tipper at gmail.com> ---
Model: iMac 4K (2015)
Platform: macOS 10.13.3
Storage: APFS running on APPLE SSD SM0512G 

Symptom: 5% throughput over Gigabit LAN compared to rsync 3.1.2 (4Mb/s vs
The target machine is FreeBSD 11.1 running rsync 3.1.3

I don't have any diagnostic but I have downgraded to rsync 3.1.2 from 3.1.3 and
seen a 20-fold increase in throughput. It seems unlikely that it is to do with
the specific model of SSD as mine is not one of the type listed in the bug
report. I suggest looking into APFS. I would also note that I installed rsync
from Macports.

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