bozden Posted November 20, 2020 Posted November 20, 2020 Tesla MCU1 eMMC failure https://tesla-info.com/blog/tesla-mcu1-emmc-failure.php 1
TRS-80 Posted November 20, 2020 Posted November 20, 2020 Nice find! Who are they using for engineers? Even Armbian knew this since what... 2016, at least? Maybe I add a link to this article from Performance tweaks section of docs (even Tesla got this wrong...)!
NicoD Posted November 20, 2020 Posted November 20, 2020 Has been known for a while from the Tesla's. They just didn't confirm until now. From January https://teslamotorsclub.com/tmc/threads/consolidated-emmc-thread-mcu-repair-black-center-screen.181124/ There are only so many write cycles. Normal when swap is used that it dies after a few years. I use swap on NVMe and replace my NVMe about every year. Rather have a lot of extra usable memory available than a long lifetime.
sfx2000 Posted November 30, 2020 Posted November 30, 2020 Tesla's own fault... 1) 8GB eMMC is going to have a fair amount of writes if logging direct to disk - and each write there is two writes, one to erase a block, and one to rewrite the entire block. 2) Reminds me of a handset vendor about 7 years ago, where they would write a time value every second to eMMC - after about 9 months, the device would die... sfx
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