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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. Patrick Walton‏ @pcwalton 13 Mar 2019
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      The curse of being a browser developer and knowing about rendering performance, memory usage, etc. is that you are guaranteed to be the one person nobody ever listens to about these topics.

      9 replies 21 retweets 207 likes
    2. Gok‏ @Gok 13 Mar 2019
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      Replying to @pcwalton

      What are some common misconceptions?

      1 reply 0 retweets 1 like
      Patrick Walton‏ @pcwalton 13 Mar 2019
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      Replying to @Gok

      Myths: 1. There is “the memory leak” that needs to be found and fixed and suddenly browsers will be fast. 2. Browsers are “memory hungry” because browser developers are lazy and don’t bother to optimize mem usage. 3. Supporting CSS edge cases is what makes browsers slow.

      9:06 PM - 13 Mar 2019
      • 10 Retweets
      • 40 Likes
      • Farseen Abdul Salam an end Barret Rennie markus staab delan assigned goth at birth Matt N. Zibi Braniecki Гриша. Теперь в 3D!
      6 replies 10 retweets 40 likes
        1. New conversation
        2. Gok‏ @Gok 13 Mar 2019
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          Replying to @pcwalton

          I actually have the opposite feeling from #2: browser developers optimize too well, which has allowed web apps to grow their memory usage without bound.

          4 replies 0 retweets 9 likes
        3. Patrick Walton‏ @pcwalton 13 Mar 2019
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          Replying to @Gok

          I have similar feelings re. React.

          1 reply 0 retweets 7 likes
        4. 1 more reply
        1. New conversation
        2. Kyle Huey‏ @khuey_ 13 Mar 2019
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          Replying to @pcwalton @Gok

          We fixed the memory leak about ten separate times while I was at Moz.

          1 reply 0 retweets 13 likes
        3. Henri Sivonen‏ @hsivonen 13 Mar 2019
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          Replying to @khuey_ @pcwalton @Gok

          Henri Sivonen Retweeted Andrew McCreight

          Not just fixed The Leak but even better: negative leaks!https://mobile.twitter.com/amccreight/status/1100530694566998016 …

          Henri Sivonen added,

          Andrew McCreight @amccreight
          I really should put together a list of all of the weird reasons we're have negative leaks in Firefox.
          Show this thread
          0 replies 0 retweets 2 likes
        4. End of conversation
        1. New conversation
        2. Andrew McCreight‏ @amccreight 13 Mar 2019
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          Replying to @pcwalton @Gok

          Another fun one I see sometimes when they have a positive feeling about their browser is that it is using a lot of memory in a deliberate fashion to maximize performance.

          2 replies 0 retweets 2 likes
        3. Benjamin Bouvier‏ @bnjbvr 14 Mar 2019
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          Replying to @amccreight @pcwalton @Gok

          We preallocate lots of malloc memory to implement our fast arena allocators on top of it. Does that count?

          1 reply 0 retweets 0 likes
        4. 1 more reply
        1. Paul Bone‏ @Paul_Bone 14 Mar 2019
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          Replying to @pcwalton @Gok

          2 happened this week. Someone filled a bug against the GC because slack uses too much memory.

          0 replies 0 retweets 2 likes
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        1. Andrew McCreight‏ @amccreight 13 Mar 2019
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          Replying to @pcwalton @Gok

          The funny thing here is that you basically expressed a less mean variant of 2 when you were starting to work on Servo. Some lessons can only be learned the hard way.

          0 replies 0 retweets 1 like
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        1. New conversation
        2. Brian Birtles‏ @brianskold 14 Mar 2019
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          Replying to @pcwalton @Gok

          3 doesn't seem too far off. One example is all the extra work we do in Gecko to get CSS animations and transitions to layer correctly--something none of the other engines do and which Emilio is always itching to drop.

          1 reply 0 retweets 2 likes
        3. Gok‏ @Gok 14 Mar 2019
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          Replying to @brianskold @pcwalton

          Does that actually make it slow or just add a lot of code complexity?

          1 reply 0 retweets 0 likes
        4. 1 more reply

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