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Worn Out EMMC Chips Are Crippling Older Teslas (hackaday.com)

submitted 2 years ago* (last edited 2 years ago) by AgreeableLandscape@lemmy.ml to c/technology@lemmy.ml

11 comments fedilink hide all child comments

Always comforting to know that a multi-tonne metal box that costs 50 grand and can travel at 140 KPH and mow down unsuspecting bystanders is running off what's essentially an SD card. Great engineering there, Elon!

Even the higher end phones don't use eMMC anymore, they use NVME single-chip SSDs.

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[–] FuckBigTech347@lemmygrad.ml 2 points 2 years ago (1 children)

Unfortunately, for reasons that still remain somewhat unclear, the build of Linux running on the MCU is doing exactly that. What’s worse, Tesla’s graphical interface appears to be generating its own additional log messages. Despite the likelihood that nobody will ever actually read them, for every second a Tesla is driving down the road, more lines are being added to the log files.

Doesn't this also mean that the eMMC will eventually run out of storage space? I remember when I did something which also generated a lot of log files on an SBC. After a few months of 24/7 operation there was so much stuff in /var/log that the 64GB eMMC was almost completely full.

Please don't tell me they set up a cron job or something to delete some log files every day/week/month so this wouldn't happen. Because that would mean that they are aware of the fact, that they're writing massive amounts of log files to flash memory over and over again.

[–] holdengreen@lemmygrad.ml 1 points 2 years ago

Maybe it was some programmer who's good with code but doesn't bother to understand hardware.