VERY SLOW iMac (late 2012) since last week
iMac Line (2012 and Later)
Question marked as
Your Fusion drive is operating a dreadfully slow speeds.
Performance:
System Load: 2.66 (1 min ago) 2.79 (5 min ago) 2.49 (15 min ago)
Nominal I/O speed: 13.46 MB/s
File system: 25.48 seconds
Write speed: 52 MB/s
Read speed: 102 MB/s
Based on Fusions drive performance reports I collected, your Write speeds should be over 500MB/sec and your Read speeds should be 1200 to 2000MB/sec.
Eitehr the hard drive part of your Fusion system is considering self-destruction or all the extra system mods are dragging its performance to abysmal levels.
Start by completely removing Virex. No Mac need anti-virus software, and the all extract a big performance penalty.
For help with this red flag:
2021-09-07 20:08:39 photoanalysisd High CPU Use (16 times)
Executable: /System/Library/PrivateFrameworks/PhotoAnalysis.framework/Versions/A/Support/photoanalysisd
see this article: