Just got a brand new entry-level M2 Mac mini, and getting intermittently (but frequent) abysmal performance.
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for run in 1 2 3 4 5 6 7 8 9; do for src in ToS-4k-1920.mov; do /Applications/HandBrakeCLI -i "$src" --preset "H.265 MKV 1080p30" -o ~/Downloads/"$src-encode-1to9.mkv" 2>> ~/Downloads/"$src-encode-129-log.txt"; done; done
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[06:00:04] work: average encoding speed for job is 20.368988 fps
[08:07:41] work: average encoding speed for job is 2.294528 fps
[10:50:39] work: average encoding speed for job is 1.797639 fps
[12:48:44] work: average encoding speed for job is 2.481411 fps
[13:55:30] work: average encoding speed for job is 4.390096 fps
When encoding different sources rather than Tears of Steel in a loop, I've had like a reasonably fast first encode followed by a bunch of slow encodes with an odd quick encode somewhere in the middle.
This is rather annoying, making this brand-new Mini potentially no faster than the late 2012 2.3 GHz quad i7 model it's meant to replace
At least it's silent and uses less electricity, but with encoding that slow it'll take a long time to recoup the purchase price.
I seem to recall a thread about similar issues on an M1-based Mac (mini?) around the time it was originally released, but I couldn't find the thread today.
Not yet sure how to further troubleshoot the issue. Open to suggestions