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pcwalton's profile
Patrick Walton
Patrick Walton
Patrick Walton
@pcwalton

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Patrick Walton

@pcwalton

Research engineer at Mozilla

San Francisco, CA
pcwalton.github.io
Joined November 2009

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    1. steveklabnik‏ @steveklabnik 3 Aug 2017
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      Replying to @steveklabnik

      However, that's too low-level. What it's actually saying is an OO design issue, even though rust doesn't really have objects

      3 replies 1 retweet 7 likes
    2. steveklabnik‏ @steveklabnik 3 Aug 2017
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      Replying to @steveklabnik

      The reason I get a use-after-free is because I put my method on the wrong struct.

      1 reply 1 retweet 6 likes
    3. steveklabnik‏ @steveklabnik 3 Aug 2017
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      Replying to @steveklabnik

      in a GC'd language, this code would work, but would use more memory, and the design issue would still be there

      1 reply 1 retweet 11 likes
    4. steveklabnik‏ @steveklabnik 3 Aug 2017
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      Replying to @steveklabnik

      i think this is sort of what @withoutboats often says about ownership and lifetimes, it's not really *just* about low-level issues

      1 reply 1 retweet 25 likes
    5. steveklabnik‏ @steveklabnik 3 Aug 2017
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      Replying to @steveklabnik @withoutboats

      in this case, rust is making my design better and faster

      2 replies 1 retweet 10 likes
    6. Aaron Patterson‏Verified account @tenderlove 3 Aug 2017
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      Replying to @steveklabnik

      Do Rust people measure time spent doing frees? IIRC GC'd langs can be faster than non-GC'd counterparts due to memory mgmt optimizations

      5 replies 0 retweets 4 likes
    7. Saoirse Shipwreckt‏ @withoutboats 3 Aug 2017
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      Replying to @tenderlove @steveklabnik

      I think a lot of the performance benefit you get in Rust is from cache locality, which GC languages struggle with.

      1 reply 0 retweets 8 likes
    8. Saoirse Shipwreckt‏ @withoutboats 3 Aug 2017
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      Replying to @withoutboats @tenderlove @steveklabnik

      there are just a lot *less* allocations, in Rust than in Java or a dynamic language, regardless of how they're managed

      1 reply 1 retweet 6 likes
    9. steveklabnik‏ @steveklabnik 3 Aug 2017
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      Replying to @withoutboats @tenderlove

      yup. @wycats has been talking about this a lot lately

      2 replies 0 retweets 0 likes
    10. Saoirse Shipwreckt‏ @withoutboats 3 Aug 2017
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      Replying to @steveklabnik @tenderlove @wycats

      Go might be an exception since I believe they do more to try to stack allocate values (and in general are doing a lot on GC perf)

      2 replies 0 retweets 2 likes
      Patrick Walton‏ @pcwalton 4 Aug 2017
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      Replying to @withoutboats @steveklabnik and

      Go doesn’t do any more to stack allocate values than Java does. Go just depends on it a lot more because of poor (IMHO) GC design.

      8:56 PM - 4 Aug 2017
      • 4 Likes
      • Louis eddyb, thriving in isolation, Aaron Patterson steveklabnik
      1 reply 0 retweets 4 likes
        1. Patrick Walton‏ @pcwalton 4 Aug 2017
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          Replying to @pcwalton @withoutboats and

          (Specifically, Go optimizes for low latency above all else, which results in at least 10x slower malloc than typical industry GCs.)

          0 replies 1 retweet 6 likes
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