Rephrasing a common quote - talk is cheap, that’s why I talk a lot.

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Joined 3 years ago
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Cake day: July 9th, 2023

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  • You can’s speak about not having frequent corruption of files when you are not using tools detecting it. I can guarantee you have plenty of already corrupt stuff on your hard drives. RAM bit flips do contribute to that.

    You have bugs (leading to broken documents, something failing, freezes, crashes) in applications you use and part of them is not due to developer’s error, but due to uncorrected memory errors.

    If you’d try using a filesystem like ZFS with checksumming and regular rescans, you’d see detected errors very often. Probably not corrected, because you’d not use mirroring to save space, dummy.

    And if you were using ECC, you’d see messages about corrected memory errors in dmesg often enough.


  • There’s a jump instruction by an address read from RAM, a bit flip occurred so a condition “if friend greet else kill” worked as “if friend rape else kill”. Absolutely anything can happen, that wasn’t determined by program design flaws and errors. A digital computer is a deterministic system (sometimes there are intentional non-deterministic elements like analog-based RNGs), this is non-deterministic random changes of the state.

    In concrete terms - things break without reason. A perfect program with no bugs, if such exists, will do random wrong things if bit flips occur. Clear enough?




  • No, that’s you happily laughing at the nonsense you yourself said attributing that to me.

    I said that RAM compression in MacOS is an OS feature, well-tested and always on. You can play with something similar under Linux and find out it really makes things better. Which means you can fit more there. Like 10%-20% more is notable enough.

    And I said that unified memory is a feature of their hardware, which is correct. Which is the reason Intel and AMD were playing with that X86-S idea (a new architecture with much of legacy removed, and also, yes, unified memory), until they dropped it because Intel is going to shit.

    I don’t see any marketing nonsense in technical facts. Your GPU can use all the same RAM with less expense for doing that. And RAM allocated to applications does get compressed, which is more CPU-intensive obviously, but happens.

    These are obviously correct.


  • Unified memory, so more efficient with that. Also MacOS has RAM compression.

    I suppose more is better, and 8GB seems like bare minimum for something useful. But one should always mind that now (unlike before 2020) Apple’s hardware has caught up with their advertising in the fact that it’s really specifically optimized for the job.

    It’s fine for an “Apple Chromebook” I think, especially if bulk orders for institutions will get different deals.