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is8ac's profile
Isaac Leonard
Isaac Leonard
Isaac Leonard
@is8ac

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Isaac Leonard

@is8ac

low precision shallow learning, in Rust

isaacleonard.com
Joined June 2014

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    1. Isaac Leonard‏ @is8ac Jan 8
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      Replying to @is8ac @NPCollapse

      Memory usage: If a programmer manages memory manually, they will introduce memory corruption bugs, some of which be security vulnerabilities.

      1 reply 0 retweets 0 likes
    2. Isaac Leonard‏ @is8ac Jan 8
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      Replying to @is8ac @NPCollapse

      Until recently[2], the primary way to achieve automatic memory management was garbage collection. This introduces CPU and memory overhead.

      1 reply 0 retweets 0 likes
    3. Isaac Leonard‏ @is8ac Jan 8
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      Replying to @is8ac @NPCollapse

      [2]: Rust provides automatic memory management without a GC by means of a barrow checker. New Rust devs spend the first few weeks fighting the barrow checker, and often just copy memory to avoid it (which increases memory usage again). Swift uses reference counting.

      1 reply 0 retweets 0 likes
    4. Isaac Leonard‏ @is8ac Jan 8
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      Backwards compatibility: Linux is big because it maintains compatibility with a older APIs. I assume Windows is similar. Redox OS https://www.redox-os.org/  is 49 MB for a full GUIed OS with a few basic applications. It does not support existing software however.

      1 reply 0 retweets 0 likes
    5. Isaac Leonard‏ @is8ac Jan 8
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      Replying to @is8ac @NPCollapse

      ChromeOS is an example of what Linux can be if you do not need to maintain compatibility with other software and hardware.

      1 reply 0 retweets 0 likes
    6. Isaac Leonard‏ @is8ac Jan 8
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      Modularly: Qubes OS https://www.qubes-os.org/  is 4.5 GB and takes quite huge amounts of RAM. Why does it need to be so large? Because it runs each group of applications in its own VM with it's own kernel and root FS.

      1 reply 0 retweets 0 likes
    7. Isaac Leonard‏ @is8ac Jan 8
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      This is nice for security, (because kernel devs have so far failed at building a mainstream kernel which can safely execute malicious userspace software), but introduces significant overhead.

      1 reply 0 retweets 0 likes
    8. Isaac Leonard‏ @is8ac Jan 8
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      Replying to @is8ac @NPCollapse

      Qubes OS is an extreme case. But to a lesser extent, all modern operating systems compartmentalize their userspace software, requiring it to live in its own well protected sandbox and communicate through tightly defined channels.

      1 reply 0 retweets 0 likes
    9. Isaac Leonard‏ @is8ac Jan 8
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      Replying to @is8ac @NPCollapse

      This introduces overhead and increase latency. Latency cannot be masked by better hardware because CPU speeds are not increasing very much any more.

      1 reply 0 retweets 0 likes
    10. Isaac Leonard‏ @is8ac Jan 8
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      Replying to @is8ac @NPCollapse

      Build times: Modern compilers do more work. Some people do care about build times. Go and Swift build fast. Rust release builds relatively slowly, but `cargo check` is fast. They care about build times: https://perf.rust-lang.org/  https://blog.mozilla.org/nnethercote/2019/07/25/the-rust-compiler-is-still-getting-faster/ …

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      Isaac Leonard‏ @is8ac Jan 8
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      In conclusion: Current software has increased binary size and memory usage in exchange for security and performance and developer convenience. (Even taking all this into account, it is still inexcusably large, broken and insecure.)

      10:09 AM - 8 Jan 2020
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