Mojave - slow transfer speeds
Happy New Year! Starting the year off right with a random dilemma :-/ I recently installed Mojave (up from Sierra) on my 2012 Mac Mini and 2012 MBP. Everything seems to be working as expected except disk transfers. I just backed up a 1TB drive and it took 14 hours. I used to get speeds in excess of 300MB/s between SSDs and up to 150MB/s on mechanical drives. This is both with internal drives and external drives using USB 3 caddies (direct connection - no hub). But since installing Mojave, I now I consistently get 15-20MB/s for mechanical drives and not much better for SSDs. Read speeds for OS and applications seems good - but slows down to a crawl when it comes to copying files - either in the Finder or using software like CarbonCopyCloner. Even just duplicating a file in the OS Finder seems slow. Also, emptying the trash can be time consuming if a trashed folder contains lots of files - whether HFS+ or APFS. I have looked around the internet and did a search on ehMac and can't find much relevant info on this. If anyone has insight to offer that would be amazing. Thanks so much!
Mac OS 10.14.6
Mac Mini (late 2012) quad i7 2.3GHz
Mac Mini (mid 2012) quad i7 2.6GHz
both have 1TB Samsung 850 EVO system drive 30% free, APFS
external drives connected directly to USB3 (no hub)
Mechanical drives are HFS+, SSDs are APFS.
Mini 2.3 Quad-i7 / 16GB / 2 x 1TB SSD
MBP 17" 2.66 Dual-i7 / 8GB ram/ 2 x 1TB SSD
- OS 10.14.6 / 0.00% warez