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Was it ever really an Apple Silicon issue or a macOS issue? I thought this was a macOS and SSD issue even before Apple Silicon came out?
by hk1337 4y ago
Was it ever really an Apple Silicon issue or a macOS issue? I thought this was a macOS and SSD issue even before Apple Silicon came out?
- cool_hw 4y agoI'm not sure, but you may be right. In either case, going by the results here, it seems this is expected usage. That is quite something, especially comparing it to linux. No idea how windows plays into this.
- g_p 4y agoSomething I have noticed is that a few Mac services related to spotlight have a propensity to be very heavy on the system writes. corespotlightd and suggestd in particular seem to do some kind of indexing operation after some trigger, which can write tens of gigabytes to the SSD. I managed to narrow it down to an RSS reader app (from the app store, so presumably not doing anything untoward), which appears to be getting indexed. despite having turned almost all indexing in spotlight off, and even excluded ~/Library and /Library from spotlight. After the main writes are done (150 MB/s for a period of time), corespotlightd and suggestd then continue to generate a background load of around 50 MB/s of writes for a sustained period of time. Console logs show there's "ProactiveHarvesting" going on in suggestd, but no clear way to switch this off. I suspect (based on watching it write 16 GB over 5 to 10 minutes), others could be encountering this, or other similar behaviour.