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danluu's profile
Dan Luu
Dan Luu
Dan Luu
@danluu

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Dan Luu

@danluu

https://patreon.com/danluu 

danluu.com
Joined December 2008

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    1. Dan Luu‏ @danluu 12 Sep 2017
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      Does anyone in the NYC area have a pre-2000 PC with CRT I use to do some input-to-screen latency measurements?

      6 replies 7 retweets 4 likes
      Show this thread
    2. Dan Luu‏ @danluu 12 Sep 2017
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      So far, I've tested or can test a Commodore PET, SGI indy, Symbolics 3620, Next cube, Mac classic, and Apple II, plus some modern machines.

      3 replies 0 retweets 4 likes
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    3. Dan Luu‏ @danluu 12 Sep 2017
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      Unfortunately, old PCs seem to be in a sort of uncanny valley where they're too slow to be useful and too mundane for people to collect.

      6 replies 1 retweet 10 likes
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    4. Dan Luu‏ @danluu 19 Sep 2017
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      Also, does anyone near NYC have a phone I can use for latency/responsiveness benchmarking, esp. an older iPhone?

      2 replies 0 retweets 0 likes
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    5. Dan Luu‏ @danluu 19 Sep 2017
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      I've started doing basic latency measurements on phones and haven't found and iPhone that's slower than any Android phone.

      5 replies 5 retweets 24 likes
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    6. Dan Luu‏ @danluu 19 Sep 2017
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      I'm curious if an iPhone or iPhone2 is quicker than a modern Android phone at scroll and/or tap responsiveness.

      4 replies 2 retweets 8 likes
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    7. Dan Luu‏ @danluu 24 Sep 2017
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      I've started measuring keypress -> USB latency with a logic analyzer and I'm seeing some measurements in the 20ms to 30ms rangepic.twitter.com/nzUPYMS2rn

      8 replies 1 retweet 37 likes
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    8. Dan Luu‏ @danluu 24 Sep 2017
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      Is this plausible? 20ms to 30ms for a keypress seems absurd. OTOH, it's consistent this person's experiment http://forums.blurbusters.com/viewtopic.php?f=10&t=1836&sid=080b1b6a517ed1eb6988627c48da080c&start=10 …

      5 replies 0 retweets 9 likes
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      Dan Luu‏ @danluu 24 Sep 2017
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      They start measuring from internal switch activation and I start when the key moves, so that could explain the 10ms difference.

      5:07 PM - 24 Sep 2017
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      • Grandmaster Clock 😷 🇪🇺 Peter Johnson
      4 replies 0 retweets 2 likes
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        2. Dan Luu‏ @danluu 26 Sep 2017
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          Also, does anyone in the NYC area have an "interesting" keyboard I can borrow to test?

          6 replies 1 retweet 2 likes
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        3. Dan Luu‏ @danluu 26 Sep 2017
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          So far, I've tested a couple gaming keyboards and a bunch of other "normal" keyboards. The gaming keyboards haven't been faster.

          7 replies 1 retweet 12 likes
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        4. End of conversation
        1. New conversation
        2. Mirabai Knight‏ @stenoknight 26 Sep 2017
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          Replying to @danluu

          Come check out my StenoMod! https://stenomod.blogspot.com pic.twitter.com/OpdRN1rwEX

          1 reply 0 retweets 0 likes
        3. Dan Luu‏ @danluu 27 Sep 2017
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          Replying to @stenoknight

          I'd love to try this! DM me to make arrangements?

          0 replies 0 retweets 1 like
        4. End of conversation
        1. shaquile o’seal‏ @wileycwj 24 Sep 2017
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          Replying to @danluu

          that definitely could. 20ms seems way more reasonable than 30ms.

          0 replies 0 retweets 0 likes
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        1. Won Chun‏ @won3d 24 Sep 2017
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          Replying to @danluu

          Maybe debouncing? There was some noise about optical or hall effect switches which wouldn't have that problem.

          0 replies 0 retweets 0 likes
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