Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

Post by lobocinza » Mon, Apr 10, 2023, 9:21 PM UTC

alluro2 wrote: post #196

warent wrote: post #181

Earlier quoted context omitted.

This seems unnecessarily passive aggressive. Everyone makes mistakes or bugs, intern or not. It makes no sense to get this salty about basic human error. Also there's nothing wrong with implementing minor UX enhancements. If anything redirect the frustration to the leadership that doesn't prioritize fixing these kinds of errors.

I don't think there's any error to fix. It's a feature - casting light from the video onto the UI, using JS, surely takes that amount of CPU. The question of why it is on by default stands - because it's little bit of eye candy, vs people's laptop batteries, CPU that could have been used to get other stuff done faster - so also their time, device thermals etc... I don't think it's just unnecessarily salty to point ou…

Post by chris_wot » Mon, Apr 10, 2023, 9:22 PM UTC

shadowgovt wrote: post #202

jupp0r wrote: post #13

Earlier quoted context omitted.

The platform feature in question was normally cheap and just made artificially expensive by Defender intercepting calls to it and blocking until analysis was performed. I don't think it's the FireFox' team's responsibility to be aware of and take into account arbitrary software intercepting system calls.

> I don't think it's the FireFox' team's responsibility to be aware of and take into account arbitrary software intercepting system calls. One of the first, hard lessons I had to learn about web development (like, stare-at-a-wall-and-consider-my-career-hard) is that web development is way more about network effects than application architecture. Real people run systems with real configurations, and when you're target…

Post by sicariusnoctis » Mon, Apr 10, 2023, 9:25 PM UTC

asvitkine wrote: post #153

cronix wrote: post #143

If you're on a Mac and using FF (probably not FF specific), turning off "ambient mode" in youtube can save 30% cpu. I just found this out while searching why FF was taking 90% of my cpu while watching youtube videos in normal mode, but went down to 40% use if viewing in full screen. Turns out that this youtube "ambient mode" was the culprit. My lap is now cooler and the fan doesn't turn on anymore. I wonder how much…

To save a search: "Ambient mode uses a lighting effect to make watching videos in Dark theme more immersive, by casting gentle colors from the video, into your screen's background."

Post by rileyphone » Mon, Apr 10, 2023, 9:29 PM UTC

simlevesque wrote: post #226

tempestn wrote: post #219

Earlier quoted context omitted.

How much can websites determine about the power of the device they're running on? Obviously it'd be a security issue for them to know too much, but it would be nice to be able to progressively enhance the experience for more powerful devices that can handle it, beyond just mobile vs PC. Even just knowing whether a device was running off battery power could be useful.

Here's what's available, requires permissions: - BatteryManager.charging - BatteryManager.chargingTime - BatteryManager.dischargingTime - BatteryManager.level https://developer.mozilla.org/en-US/docs/Web/API/BatteryMana... https://caniuse.com/?search=BatteryManager

Post by haupt » Mon, Apr 10, 2023, 9:36 PM UTC

axolotlgod wrote: post #126

dist-epoch wrote: post #120

Earlier quoted context omitted.

> That's 250 megawatts saved, the equivalent of an average coal power plant. Because some Microsoft engineer missed a bug. Are you sure you want to invoke this logic? Because following it through imagine the energy savings if Firefox users switched to Chrome.

Does Chrome really use significantly less resources than Firefox? Are there numbers there?