5 ms·

> The one annoyance I've encountered is that the installer will move everything in /usr/local out of the way before doing the upgrade and moving it back. This

> The one annoyance I've encountered is that the installer will move everything in /usr/local out of the way before doing the upgrade and moving it back. This can be a significant point. I thought my computer was bricked when I did one of the previous upgrades (maybe Mavericks?) and the upgrade took something like 14 hours (with no change in the progress bar).

acdha 11y ago
It's definitely mind-boggling just how inefficient it is – feels like 1-byte writes followed by a full fsync based on how it can keep an SSD capable of 10K ios busy for a period measured in hours.