11–20 of 35 posts
In order for this statement to be true, the CPU would have to be using 85% of the entire watch's power consumption just to shuffle PNGs. I bet the entire CPU doesn't use nearly that much power, once you include the display.
The big take-away: In the end of the day, the watch battery is there just to shuffle these .PNGs around. When Apple realizes how to avoid that, the watch will last for a week instead of hours.
PNG is not cheap on the compression side, due to the lossless coder. It's a little better to decompress: Some benchmarks on iPhone 6 are here: https://browser.primatelabs.com/geekbench3/4423501 e.g., JPEG is 15x faster to compress and 2.5x faster to decompress.
The big take-away: In the end of the day, the watch battery is there just to shuffle these .PNGs around. When Apple realizes how to avoid that, the watch will last for a week instead of hours.
Except Android Wear watches are built essentially identically, and only get about a days worth of life, and don't do any of this crazy shit.
That is at best misleading, as it is not true for collections. From the Swift docs:
> If you create an array, a set, or a dictionary, and assign it to a variable, the collection that is created will be mutable. This means that you can change (or mutate) the collection after it is created by adding, removing, or changing items in the collection. If you assign an array, a set, or a dictionary to a constant, that collection is immutable, and its size and contents cannot be changed.
Swift is the only language that I've seen that actually does make a distinction depending on the keyword used.
I never understand how someone can write an article about their very first foray into something and then, at the end, assert that they know more than the experts already. > In the end of the day, the watch battery is there just to shuffle these .PNGs around. When Apple realizes how to avoid that, the watch will last for a week instead of hours. Drawing every frame using CoreGraphics is a terrible idea, on any iOS dev…
The big take-away: In the end of the day, the watch battery is there just to shuffle these .PNGs around. When Apple realizes how to avoid that, the watch will last for a week instead of hours.
Hint: the power draw on these watches is not from drawing.
On phones, with powerful CPU's, the display is usually 10x the draw of the CPU (depends on the CPU).
On a watch, what do you think that ratio is?
The big take-away: In the end of the day, the watch battery is there just to shuffle these .PNGs around. When Apple realizes how to avoid that, the watch will last for a week instead of hours.
Except he provides no evidence this is true, and in fact, it's almost certainly 100% not true ;-) Hint: the power draw on these watches is not from drawing. On phones, with powerful CPU's, the display is usually 10x the draw of the CPU (depends on the CPU). On a watch, what do you think that ratio is?
Nawh, I'm probably wrong.
I never understand how someone can write an article about their very first foray into something and then, at the end, assert that they know more than the experts already. > In the end of the day, the watch battery is there just to shuffle these .PNGs around. When Apple realizes how to avoid that, the watch will last for a week instead of hours. Drawing every frame using CoreGraphics is a terrible idea, on any iOS dev…
I too was expecting a technical article from an expert, so I closed it after reading the first sentence. While reading the first sentence, a Flash plugin on the page crashed my browser, making the author even less credible of an authority on performance benchmarking.
Earlier quoted context omitted.
Except Android Wear watches are built essentially identically, and only get about a days worth of life, and don't do any of this crazy shit.
Yeah. Pebble does get a week of battery life, however. The distinction between them and AppleWatch/AndroidWear is that the Pebble uses an E-ink screen that consumes no power when it doesn't change. That makes me think that the display is the biggest power drain on a smartwatch.