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Old 04-22-2017, 03:45 AM   #31
NullNix
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Originally Posted by knc1 View Post
Not only does it take a lot of resources to compute a large font the first time, it requires a lot of memory space for the font cache.
If you're referring to the fontconfig font cache, you can't render any fonts without that in place already, so if your Kindle is displaying anything resembling text, you already have the fontconfig cache in place.

I'm not aware of any other aggressive work done by fontconfig or freetype: fonts are rendered lazily, as required, so the size of a font or the number of glyphs has little effect on performance (though very complex single glyphs might still slow things down a bit). The last system I'm aware of to do aggressive computation of anything much relating to every glyph in a large font was X11 core fonts, and the Kindle doesn't use those. It's a lethally bad idea with modern Unicode fonts with many thousands of glyphs. It was fairly common to see X servers lock up for minutes at a time back then.
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Old 04-22-2017, 12:30 PM   #32
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Originally Posted by Braid View Post
The total amount of battery time is important, of course. But I've been thinking just now, that what really matters just as much, is the issue of how accurately the battery life is displayed by the reader's firmware.

If the remaining battery amount is displayed accurately and reliably, then I don't need to worry about it. Nobody reads for 14 hours without taking a break, and during a break you can easily plug in the reader to charge.
I hate to be the exception to the rule you just stated Braid. I frequently read for 14 or more hours with minimal bathroom breaks. While I do read with my tablet plugged in when it runs out of power, it is a valid question I'm asking.

I see all the ads for how kindle and other eink devices have much longer battery lives than my Samsung tablet is supposed to have yet when I go to look it up I find the time is referred to in days or weeks and not in actual reading numbers. I just want to know how long I could expect a kindle or other eink device to work if I was away from a charging source in terms of reading hours.
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Old 04-22-2017, 12:35 PM   #33
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Originally Posted by Barty View Post
I recharge my voyage once every 2, 3 days. Wi-Fi off. Light ~50%. Sensor off.

I've never gotten weeks of battery life with any kindle I've had, except during fallow periods when I don't read much.
Thank you. About how many hours a day do you read? I recharge my Samsung Tab 4 7" every day or two but I read between 8 and 16 or more hours most days. I normally have wifi off and my light is set at around 40% or so brightness. I do read with it plugged in sometimes lol.
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Old 04-22-2017, 12:37 PM   #34
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That very much fits in with what I get on my Voyage in terms of total number of hours reading time.
So somewhere around 20 to 30 hours? Which model HarryT? That is somewhat better than my tablet. I assume it is with wifi off and is there a light or ???
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Old 04-22-2017, 12:39 PM   #35
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Why do you ask "which model" when I specifically said "on my Voyage" in the message you quoted?
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Old 04-22-2017, 10:17 PM   #36
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Quote:
Originally Posted by LadyKate View Post
So somewhere around 20 to 30 hours? Which model HarryT? That is somewhat better than my tablet. I assume it is with wifi off and is there a light or ???
I'm not Harry, but I read approximately 2 hours a day, wifi is always on, and my light is at about 10. I charge every 10 days or so.

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Old 04-24-2017, 11:01 PM   #37
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Originally Posted by LadyKate View Post
Thank you. About how many hours a day do you read? I recharge my Samsung Tab 4 7" every day or two but I read between 8 and 16 or more hours most days. I normally have wifi off and my light is set at around 40% or so brightness. I do read with it plugged in sometimes lol.
Maybe 8-10hrs on heavy days, though I don't time myself. I do use largish font size so I have to turn page more often than average. It should last longer than your Samsung tab. You should be able to go a whole day at least, regardless of how much you read.
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