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The one thing I'm concerned about are reports of potential SSD overwear e.g.: [1]. 1. https://linustechtips.com/topic/1306757-m1-mac-owners-are-experiencing-ex

by _gtly 6y ago

The one thing I'm concerned about are reports of potential SSD overwear e.g.: [1]. 1. https://linustechtips.com/topic/1306757-m1-mac-owners-are-experiencing-extremely-high-ssd-writes-over-short-periods-of-time-likely-thanks-to-aggressive-swap/ https://linustechtips.com/topic/1306757-m1-mac-owners-are-ex...

stu2b50 6y ago
I think that's mostly FUD. It's just one tool that's reporting those reads, and the reality is that with modern storage hardware, the numbers they report can be very misleading because of additional layers between the OS and physical drive. In practice, I can't imagine the SSD load to be particularly worse than what the iPhones endure, and I have yet to hear anyone complain about their iPhone dying from their flash storage being overused.
- SXX 6y ago
  No it's not FUD and I can absolutely prove this to you. Just open Activity Monitor -> Disk and then watch disk writes. Then check how SMART report changes and you'll see it's exactly match what MacOS itself reports. MacOS is heavily rely on swap at least on M1 hardware for absolutely no reason.
  - artursapek 6y ago
    Why are people downvoting this without saying anything?
- lawnchair_larry 6y ago
  It's definitely not FUD, but it's probably a bug. I'm surprised at how many people are in complete denial that this could be happening and are assuming that people aren't understanding the tooling or something, instead of the obvious explanation, that it's actually an issue.
  - ChrisLTD 6y ago
    I was just looking at Disk tab of Activity Monitor, and the numbers just don't make any sense, unless Mac apps are all throwing gobs of bits at the disk for no particular reason. For example, in two days of uptime it says the SafariBookmarksSyncAgent has written 1.94 GB to disk. I haven't added any bookmarks to my machine in those two days and I haven't used Reading List, so how is that even possible?
    - brokenmachine 6y ago
      A bug? Why isn't that possible? You seem to have excluded the possibility of a bug despite having evidence that one exists.
      - spuz 6y ago
        I don't think ChrisLTD is excluding the possibility of a bug - he is just asking how it's possible that a process has written so much to disk.
        ChrisLTD 6y ago
        Yes, thank you.
    - spuz 6y ago
      As other's have stated, it's possible that SafariBookmarksSyncAgent has a process that regularly writes to memory (object creation and garbage collection) and that memory is being paged to disk.

by _gtly 6y ago

stu2b50 6y ago

I think that's mostly FUD. It's just one tool that's reporting those reads, and the reality is that with modern storage hardware, the numbers they report can be very misleading because of additional layers between the OS and physical drive. In practice, I can't imagine the SSD load to be particularly worse than what the iPhones endure, and I have yet to hear anyone complain about their iPhone dying from their flash storage being overused.

SXX 6y ago
No it's not FUD and I can absolutely prove this to you. Just open Activity Monitor -> Disk and then watch disk writes. Then check how SMART report changes and you'll see it's exactly match what MacOS itself reports. MacOS is heavily rely on swap at least on M1 hardware for absolutely no reason.
- artursapek 6y ago
  Why are people downvoting this without saying anything?
lawnchair_larry 6y ago
It's definitely not FUD, but it's probably a bug. I'm surprised at how many people are in complete denial that this could be happening and are assuming that people aren't understanding the tooling or something, instead of the obvious explanation, that it's actually an issue.
- ChrisLTD 6y ago
  I was just looking at Disk tab of Activity Monitor, and the numbers just don't make any sense, unless Mac apps are all throwing gobs of bits at the disk for no particular reason. For example, in two days of uptime it says the SafariBookmarksSyncAgent has written 1.94 GB to disk. I haven't added any bookmarks to my machine in those two days and I haven't used Reading List, so how is that even possible?
  - brokenmachine 6y ago
    A bug? Why isn't that possible? You seem to have excluded the possibility of a bug despite having evidence that one exists.
    - spuz 6y ago
      I don't think ChrisLTD is excluding the possibility of a bug - he is just asking how it's possible that a process has written so much to disk.
      - ChrisLTD 6y ago
        Yes, thank you.
  - spuz 6y ago
    As other's have stated, it's possible that SafariBookmarksSyncAgent has a process that regularly writes to memory (object creation and garbage collection) and that memory is being paged to disk.