5 ms·

> And in the event that we were wrong, and you weren’t interested in seeing the tab, we eventually throw the uploaded layers away. No comment on the increased

> And in the event that we were wrong, and you weren’t interested in seeing the tab, we eventually throw the uploaded layers away. No comment on the increased CPU usage/effect on battery life this might have. I haven't tested it yet, but it seems like it could be significant. I hover over way more tabs than I switch to sometimes. I currently have a lot of tabs open (in Chrome) and I switch frequently. However, I hover over a tab only to read the title, rarely to click. I'm interested in checking out Firefox again soon to see the new performance gains (maybe including this one), but does it affect battery life? What if the false positive ratio is nearly 100%, like I suspect it would be for my patterns? Does this affect other performance like scrolling or typing if I've also been hovering over a lot of tabs? Interesting work! Edit: > Maybe this is my Canadian-ness showing, but I like to think of it almost like coming in from shoveling snow off of the driveway, and somebody inside has already made hot chocolate for you, because they knew you’d probably be cold. How sure are you that you won't end up with a whole bunch of hot chocolate that nobody wants? What is the waste factor when the extra work is done unnecessarily?

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hafta 9y ago
> How sure are you that you won't end up with a whole bunch of hot chocolate that nobody wants? What is the waste factor when the extra work is done unnecessarily? This is one of the things telemetry data can be used for. We can include telemetry probes in the browser that tell us what percentage of the time users end up switching tabs after hovering. Then we can make informed decisions about whether the feature is worth the extra complexity (and CPU cycles) before any development work is done. As far as tailoring the feature to individual browsing habits, telemetry could inform whether or not that would be worth implementing.
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- tjoff 9y ago
  And I guess this wouldn't be possible with opt-in telemetry?
  - Sylos 9y ago
    Not reliably, as only power users will ever even consider opting into telemetry (or changing pretty much any setting for that matter). And power users generally have a much clearer layout of the tabs in their mind and will always go straight up and click, rather than ruffling through the tabs for a second. Or something like that. You get the idea, behavior here is simply different for power users and those are who you'll reach with opt-in telemetry. Also has to be asked, though, what's the point in making this opt-in? Is it in any way sensitive information whether you click after hovering a tab? I also prefer being more cautious than is necessary, because sometimes there just is some privacy implication you didn't think of, but with this the risk seems incredibly low and they do have a clearly defined use for the telemetry.
bzbarsky 9y ago
> I hover over a tab only to read the title Titles are much more readable without hovering in Firefox than in Chrome, because the minimum tab size is larger.

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hafta 9y ago

> How sure are you that you won't end up with a whole bunch of hot chocolate that nobody wants? What is the waste factor when the extra work is done unnecessarily? This is one of the things telemetry data can be used for. We can include telemetry probes in the browser that tell us what percentage of the time users end up switching tabs after hovering. Then we can make informed decisions about whether the feature is worth the extra complexity (and CPU cycles) before any development work is done. As far as tailoring the feature to individual browsing habits, telemetry could inform whether or not that would be worth implementing.

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tjoff 9y ago
And I guess this wouldn't be possible with opt-in telemetry?
- Sylos 9y ago
  Not reliably, as only power users will ever even consider opting into telemetry (or changing pretty much any setting for that matter). And power users generally have a much clearer layout of the tabs in their mind and will always go straight up and click, rather than ruffling through the tabs for a second. Or something like that. You get the idea, behavior here is simply different for power users and those are who you'll reach with opt-in telemetry. Also has to be asked, though, what's the point in making this opt-in? Is it in any way sensitive information whether you click after hovering a tab? I also prefer being more cautious than is necessary, because sometimes there just is some privacy implication you didn't think of, but with this the risk seems incredibly low and they do have a clearly defined use for the telemetry.

bzbarsky 9y ago

> I hover over a tab only to read the title Titles are much more readable without hovering in Firefox than in Chrome, because the minimum tab size is larger.