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  1. I do understand the differences between LCDs and...

    I do understand the differences between LCDs and CRTs. The scan rate from a video card is still called "refresh" rate, though, and I want moar framez.
  2. What monitors are you using? Is there a list of...

    What monitors are you using? Is there a list of monitors that will accept high-rate signals at high resolution? Ever since I switched from CRTs to LCDs, I've longed for refresh rates greater than...
  3. So in order to actually edit any real video...

    So in order to actually edit any real video formats, you have to buy a license that expires after a year, so they hold your past creations hostage with their annual license fee?

    That's why there's...
  4. I like the idea of having applications give their...

    I like the idea of having applications give their expected frame display time to the compositor. Alternatively, video players could be given more information about the compositor's frame display...
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    It's obvious that deficiencies in the OS...

    It's obvious that deficiencies in the OS scheduler can cause just as much jitter as a hiccup in the GPU, but otherwise what gamer2k is saying makes sense to me.

    Can you define what you mean by...
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    The Y axis would still be frame duration. You...

    The Y axis would still be frame duration. You can plot the same exact data by using the timestamp of each frame instead of the frame number as the X coordinate for each data point.



    Timedemos...
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    It would be interesting to test rational...

    It would be interesting to test rational multiples (e.g. 2, 3, 5, 3/2, 4/3) of the monitor refresh rate for Hz (e.g. 60, 120, 180, 300, 90, 80).

    Also, if Phoronix Test Suite adds frame time...
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    Do you have an explanation for why a lower Hz...

    Do you have an explanation for why a lower Hz setting improves jitter? I thought the general wisdom was that a higher setting would improve timing precision.
  9. Your onboard sound card's "192kHz" probably rolls...

    Your onboard sound card's "192kHz" probably rolls off significantly above 20-30kHz, with a much higher noise floor. Pay no attention to the sample rate. Unless you are working with ultrasound, the...
  10. IIRC the last page I linked to is also the...

    IIRC the last page I linked to is also the libasound API docs. There would be a decent GUI for configuring ALSA, if people hadn't decided to ignore ALSA's entire infrastructure and build sound...
  11. It's the period_size and buffer_size parameters...

    It's the period_size and buffer_size parameters on the slave PCM. Some examples on this page: http://alsa.opensrc.org/Dmix. Official docs here:...
  12. YES, if you are the pianist.

    YES, if you are the pianist.
  13. "ALSA is useless" "HW mixing fixes that" "HW...

    "ALSA is useless" "HW mixing fixes that" "HW mixing is useless" Wat?!

    You posed a problem. A solution was offered. You rejected it without justification.

    Also, the dmix buffer size can be...
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    It looks like you can use /dev/mem to modify the...

    It looks like you can use /dev/mem to modify the GPU's assigned memory, so I'm guessing the GPU can write to CPU-assigned memory as well. You have to trust that the firmware won't do anything...
  15. Wrong Benchmarks

    Phoronix Test Suite is awesome sauce, of course, but it's no good if you run the wrong tests.

    In the future, when testing latency, these are the benchmarks that would be most relevant:


    Add...
  16. Benchmark results

    Once more common ARM platforms are supported, I look forward to benchmarks showing whether having multiple platforms in the kernel affects performance.
  17. Shaky video is harder to fake

    While shaky video conceals fakery in the physical world (as is the case with shaky and grainy bigfoot videos), it makes it harder to fake things in the digital realm. Getting the focus blur, motion...
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    Have they mentioned what video editing and...

    Have they mentioned what video editing and CD/DVD/BD burning programs are supposed to do with their multi-GB temporary files after the switch? Where are we supposed to render our movies and build...
  19. The video on the cube runs at about half the...

    The video on the cube runs at about half the framerate of the untransformed original video on the right (a 24fps xvid-encoded AVI file), though the cube's rotation is smooth.

    Ubuntu 10.10 running...
  20. I sure hope Wayland supports warping the mouse...

    I sure hope Wayland supports warping the mouse pointer, as doing so is necessary for automated GUI testing and scripting. Even if it's through a simulated event source that delivers absolute pointer...
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