Trim enables an SSD to erase pages of unused memory so they’re ready for reuse. It saves time, and greatly improves write performance. How to the best out of Trim.
performance
Given what we know about the base M5, is it really a significant improvement on the base M4. What features should we be looking at?
How operating frequencies of CPU cores used by the latest base M5 chip compare with those from previous families in the M series, and what that means. Complete with updated tables for all current chips.
A call for help: can you help complete this table of all the CPU core frequencies of M-series chips? M3 Ultra and M5 values are requested, please.
Why is tar so slow to create a tar.gzip archive on a fast Apple silicon Mac? Is it being run at low QoS on the E cores? An explanation.
Computing SHA-256 digests is a common and demanding task, particularly in security. A late Intel Mac is shown to be much slower at doing that than M-series Macs, and this considers why that might be.
Does software encryption (APFS Encrypted) result in significant overhead when using faster SSDs with a faster Apple silicon Mac? What about computing SHA256 digests?
How much faster are the P cores in M3 and M4 chips, compared to late Intel Macs? How do they compare when running threads at low QoS, such as those of macOS background tasks?
How apps and processes set their priority, and on Apple silicon that determines which type of core they can be run on. What you can do to alter that.
Speed up your hard disk by partitioning it so that its innermost 20% remains unused. Reserve space for the SLC write cache on an SSD by limiting the size of volumes.
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