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These speed tests were filmed at the actual times of web page rendering. If you are interested in the technical details, keep reading!
Equipment used:
– Computer: MacBook Pro Laptop with Windows Installed
– Monitor – 24 "Asus: We had to replace the standard fluorescent backlight with very large tungsten fixtures in order to capture more light to capture the screen, and conversely, we turned the monitor 180 degrees to eliminate a Dashboard shadow System preferences on the computer to turn 180 degrees No special software has been used in this process.
– Camera: Phantom v640 high speed camera at 1920 x 1080, movies up to 2700 frames per second
"Why does allrecipes.com in the potato gun sequence appear at a time, not the text first and the images second?" And why does it seem to make from the top of the screen to the top?"
Chrome sends the rendered page to the video card's buffer at one time, which is why allrecipes.com appears at once, not with text first and images second. Chrome actually paints the page from top to bottom, but to eliminate a shadow from the driver card, we had to flip the monitor and set the system preferences in Windows to rotate all 180 degrees, which makes the page to render to from the bottom up.
"Why does the top third of the page appear first when weather.com is loaded?"
Sometimes only half of the buffer is filled before the video card sends its buffer to the LCD. That's because Chrome on Windows uses GDI to draw, which does not make v-sync.
"The screen wipes are so smooth – how was it done?"
The screen wipes in a gradual wipe because the LCD pixels take about 10ms to flip and gradually change color.
More shooting details below:
Chrome vs. Browser Potato:
We used a version of the allrecipes.com web page that is accessible once connected. About four hours after filming the potato, we decided to use a local version of the web page to more accurately synchronize the gun. We finally got the shot we hoped for after 51 shots.
Chrome vs. Browser Sound:
We loaded an artist page from Pandora.com, an Internet radio service streaming directly to the web over a 15Mbps internet connection.
Chrome Browser vs. Lightning:
We used a local version of weather.com that has been legally approved for this video (and all the standard website authorization procedures that go into making videos!)
While we had a 15Mbps high-speed Internet connection in the studio, any live Internet connection introduces a bit of variability. To run speed tests on page rendering times, local recording and loading from the local disk can help reduce this variability.
We will publish the results of these speed tests:
https://chrome.blogspot.com/2010/05/pedal-to-chrome-metal-our-fastest-beta.html
https://www.google.com/chrome.
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