• 3 Posts
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Joined 2 years ago
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Cake day: June 21st, 2023

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  • You’re assuming it’s gone read only because it’s predicting a failure or an internal counter got too low, but SD cards aren’t very smart. There’s a good chance it actually did fail when performing a write. You can’t override hardware failure with a command line switch.

    Somehow overriding the lockout would just lead to a Knoppix image that has corrupt data silently scattered through it as bits of it fail to write. This is the sort of thing that you spend days troubleshooting hardware trying to work out why something’s crashing only to eventually figure out it’s because a program has 4kb of german midget porn in the middle of its executable. Just spend the $10 on an SD card that isn’t broken.

    Nobody wants a storage device that will silently corrupt data instead of failing safely as soon as it’s known to be faulty. Do you remove nanny fuses from your electronics so that they’ll keep running until flames actually shoot out?



  • Lemmy works by sending a message between servers, waiting for an OK, sending another message, waiting for an OK, etc.

    That means if servers are on opposite sides of the world and it takes 0.2 seconds to send a message and get an acknowledgement, you have a hard limit of 5 messages that can be sent per second, even if they’re both on 100 gigabit links.

    Lemmy.world was sending aussie.zone about 16,000 messages per hour, which is about 4.5 per second. So around 220 ms per message. And it wasn’t keeping up.

    Now lemmy.world has… it looks like two separate connections sending messages to aussie.zone, so it can have two messages in flight at a time.

    Since that started we’ve been getting two days worth of messages per day, and now we’re caught up.