Covering thermal throttling, extended coverage of SLC write cache depletion and how long it takes to empty the cache, Trimming, and more.
performance
How Apple’s new CPU cores can guess which code to run, and which data to load from memory. How those speculative techniques can be exploited, and should we be worried?
Sequoia 15.3 results in significant improvements in read-write speeds of SSDs connection through Thunderbolt 5 docks and hubs. Here are the details and implications for choosing SSDs.
How to more than double the speed of a thread run on the E cores, by running another 11 threads at the same time.
How macOS can not only regulate CPU cluster frequencies to control power use, but also moves threads to E cores. This reduces power use of over 50 W to less than 13 W.
Which versions of macOS can run in a VM? Can they run Intel apps too, and Intel macOS? How well do they perform? Can they access iCloud and run App Store apps?
Provides maximum frequencies for E and P cores in each of the M-series, a table of all frequency steps used by current M-series chips, and explanation of how they have come about and their importance.
In any M-series family, I’ve always assumed that P and E cores were the same, whether it’s a base or Ultra variant. That isn’t correct, though.
Low Power mode operates pre-emptive control of CPU core frequency to deliver the best compromise between low power use and performance. Here’s how it does so.
How CPU P cores have a frequency limit applied in Low Power mode, and how macOS regulates power use or temperature by controlling core frequency.
The Eclectic Light Company 