3 ms·

Option B sounds more likely in my case. I haven't used it much. Mostly just checking some websites. It's not a daily driver.

rodgerd 6y ago
Yeah, I hope for the sake of M1 owners that it is Option B, because it means this is likely a flap about nowt. That said, it does highlight how bad it is that computers now come with the bit that is most likely to wear out being a non-replaceable part.
- arnd 6y ago
  I double-checked the numbers reported by the driver against doing actual writes to the file system and the numbers reported by the OS, and they match exactly when there is no other activity: writing a 1GB file increases the number by 1GB and a few kilobytes of metadata. Once the memory is full, it starts swapping a lot and then things go bad. For the record, here are the numbers from this box: 900GB written in 20 power-on hours, on a 256GB driver. Critical Warning: 0x00 Temperature: 26 Celsius Available Spare: 100% Available Spare Threshold: 99% Percentage Used: 0% Data Units Read: 15,019,377 [7.68 TB] Data Units Written: 1,759,297 [900 GB] Host Read Commands: 101,021,092 Host Write Commands: 14,010,727 Controller Busy Time: 0 Power Cycles: 75 Power On Hours: 20
jghn 6y ago
My Data Units Written has gone up by 0.3TB in the last hour doing nothing but surfing the web on Safari. I would like to believe that this points to Option B. This is on a 512GB SSD/8GB RAM MBA
blep-arsh 6y ago
I've been looking at the Activity Monitor and disk writes for the kernel task are crazy high (hundreds of GBs per hour), especially when Rosetta is involved. The Rosetta daemon seems to use a lot of memory, likely causing excessive swapping. Another suspicious process is... Safari bookmark sync? Can't even image why it needs to write 10GB per hour.
- cozzyd 6y ago
  Sounds like 8 GB of RAM is not enough after all...
- therouwboat 6y ago
  Its weird that people still have computers that use swap when 16 gigs of ram costs like 80 euros.
- Reason077 6y ago
  > "The Rosetta daemon seems to use a lot of memory, likely causing excessive swapping." I haven't seen this. The rosetta daemon, oahd, is using only 1.3MB on my system (8GB M1 MacBook Air) and I have several large translated apps running. If it's stuck using lots of memory, I guess that's probably a bug.

rodgerd 6y ago

Yeah, I hope for the sake of M1 owners that it is Option B, because it means this is likely a flap about nowt. That said, it does highlight how bad it is that computers now come with the bit that is most likely to wear out being a non-replaceable part.

arnd 6y ago
I double-checked the numbers reported by the driver against doing actual writes to the file system and the numbers reported by the OS, and they match exactly when there is no other activity: writing a 1GB file increases the number by 1GB and a few kilobytes of metadata. Once the memory is full, it starts swapping a lot and then things go bad. For the record, here are the numbers from this box: 900GB written in 20 power-on hours, on a 256GB driver. Critical Warning: 0x00 Temperature: 26 Celsius Available Spare: 100% Available Spare Threshold: 99% Percentage Used: 0% Data Units Read: 15,019,377 [7.68 TB] Data Units Written: 1,759,297 [900 GB] Host Read Commands: 101,021,092 Host Write Commands: 14,010,727 Controller Busy Time: 0 Power Cycles: 75 Power On Hours: 20

jghn 6y ago

My Data Units Written has gone up by 0.3TB in the last hour doing nothing but surfing the web on Safari. I would like to believe that this points to Option B. This is on a 512GB SSD/8GB RAM MBA

blep-arsh 6y ago

I've been looking at the Activity Monitor and disk writes for the kernel task are crazy high (hundreds of GBs per hour), especially when Rosetta is involved. The Rosetta daemon seems to use a lot of memory, likely causing excessive swapping. Another suspicious process is... Safari bookmark sync? Can't even image why it needs to write 10GB per hour.

cozzyd 6y ago
Sounds like 8 GB of RAM is not enough after all...
therouwboat 6y ago
Its weird that people still have computers that use swap when 16 gigs of ram costs like 80 euros.
Reason077 6y ago
> "The Rosetta daemon seems to use a lot of memory, likely causing excessive swapping." I haven't seen this. The rosetta daemon, oahd, is using only 1.3MB on my system (8GB M1 MacBook Air) and I have several large translated apps running. If it's stuck using lots of memory, I guess that's probably a bug.