• Asus says 100% CPU utilization is required for smooth scrolling on laptops
    27 replies, posted
[QUOTE]Have you noticed that the fans start blaring on your Asus laptop when you’re barely giving it a workout? Blame the two-finger scrolling you’re doing on its trackpad. Yes, really. Normally when your CPU hits 100% utilization it’s because you’re doing some pretty intense stuff, like gaming, performing intense calculations, or working with video. Simple gesture-based scrolling, however, shouldn’t max out your processor — at least that’s what a lot of geeks think. Apparently, they’re all wrong, at least according to some Asus tech support staffers. It turns out it’s all part of providing customers with an optimal computing experience. “The behavior you see is intended, meaning, when you put 2 fingers on the pad, it will power on to full power to prevent lag or bad performance when doing gestures on the pad.” Lag is bad, right? Of course it is. No one wants a laggy computer. Asus clearly decided to ramp the processor up to make sure that its laptops can render on-screen content with absolute clarity even while it’s sliding up and down a few measly lines at a time. If that comes at the expense of battery life and noise, so be it. Lag must be eliminated at all costs. To make matters worse, you can’t even replace the custom Asus trackpad drivers with a plain vanilla version that doesn’t cause this annoying processor problem. Presumably, then, you’re stuck using page up/page down, your arrow keys, or the touchscreen if you want to avoid putting needless strain on your processor and fans. But hey, if claiming that 100% CPU usage was necessary to scroll content was a stupid stance to take, they wouldn’t call the software responsible for translating your finger motions Smartgesture would they?[/QUOTE] [url]http://www.geek.com/apps/asus-says-100-cpu-utilization-is-required-for-smooth-scrolling-on-laptops-1608457/[/url]
My computer HDD speeds up when I scroll.
My power supply and/or GPU makes a high pitch coil whine (very quiet) when I scroll :pwn:
My CPU fan goes to the highest fan mode when scrolling
I'm sorry I didn't realize this was the year 199[url=http://en.wikipedia.org/wiki/Adaptive_tile_refresh]0[/url]?
I can hear my scrolling from my speakers, but that's most likely just electrical interference.
Mouse wheel master race anyway.
I had an asus laptop- r510d or something- which, when your finger was placed on the touchpad with the battery plugged in, made the mouse twitch like you had severe parkinsons. Awful laptops.
I remember my old computer's cpu was from like 2009 whenever I moved the mouse back and forth really heavily my CPU usage would jump thank god I scrapped it
High polling rates use a surprising amount of CPU utilization. If you have a variable polling rate mouse, try 1000hz and see your CPU spike when moving around.
Yeah I was going to say, this is a hardware acceleration (presumably would be pushed to the GPU) thing, why are they ramping up the cpu?
Well, I just checked my ASUS laptop. 2 finger scrolling had no effect on cpu usage sooo?
Makes sense I guess. Better to tell the pc 'hey they're doing gestures get ready to read some intricate fucking movements' then to let your laggy ass laptop half-assedly misread yoyr gesture
If I scroll on my mouse while near a radio my radio buzzes.
Weird, I have an ROG laptop I wonder if it does that. Never really paid any attention as I use the touchpad roughly never
android also does this, all their power saving features turn off when scrolling to make sure shit isn't lagging [video=youtube;gn8m5d74fk8]http://www.youtube.com/watch?v=gn8m5d74fk8[/video] At the 1 hour mark he starts talking about this.
[QUOTE=dedo678;46413122]I can hear my scrolling from my speakers, but that's most likely just electrical interference.[/QUOTE] That can be caused by a number of issues. 1) Crosstalk. Basically traces on the motherboard induce capacitive loads on other nearby traces via EMF. This is usually indicative of poor motherboard design or a failure of some component on the motherboard. 2) Bad PSU. Failing PSUs or garbage "IED" PSUs can cause all sorts of problems, especially if they have a floating ground, which is fairly common. This isn't limited to desktops either, there are thousands of trash laptop power bricks out there which are hazardous to use. 3) Use of front panel case connectors. While front panel connectors for audio and USB are convenient, the wires that connect them are usually unshielded or inadequately shielded and pick up EMF interference from both inside and outside the case. I've seen weird instances where the front panel audio connectors would pick up local radio stations quite clearly, and also pick up garbage buzzing and humming from the motherboard. Laptops can also suffer from this if the audio jacks use extension cables instead of being directly on the motherboard.
Asus, more like anus. Mice are so much better than laptop scrolling. (disclaimer/edit: i know literally nothing about pc brands, i have just been wanting to make that joke for a long time)
Holy crap I never knew I could scroll with two fingers!
[QUOTE=zakedodead;46413284]android also does this, all their power saving features turn off when scrolling to make sure shit isn't lagging [video=youtube;gn8m5d74fk8]http://www.youtube.com/watch?v=gn8m5d74fk8[/video] At the 1 hour mark he starts talking about this.[/QUOTE] for a second I thought you weren't gonna include the time where he says
[QUOTE=GiGaBiTe;46413355]That can be caused by a number of issues. 1) Crosstalk. Basically traces on the motherboard induce capacitive loads on other nearby traces via EMF. This is usually indicative of poor motherboard design or a failure of some component on the motherboard. 2) Bad PSU. Failing PSUs or garbage "IED" PSUs can cause all sorts of problems, especially if they have a floating ground, which is fairly common. This isn't limited to desktops either, there are thousands of trash laptop power bricks out there which are hazardous to use. 3) Use of front panel case connectors. While front panel connectors for audio and USB are convenient, the wires that connect them are usually unshielded or inadequately shielded and pick up EMF interference from both inside and outside the case. I've seen weird instances where the front panel audio connectors would pick up local radio stations quite clearly, and also pick up garbage buzzing and humming from the motherboard. Laptops can also suffer from this if the audio jacks use extension cables instead of being directly on the motherboard.[/QUOTE] 3 is the most common I think as long as you have a semi-decent PSU and motherboard. I remember my headphones used to whine whenever I moved the mouse if I had them connected to the front panel. The weird thing was the pitch of the whine was different depending on which direction I was moving the mouse.
I just ran my fingers quickly over this laptop's track pad, just to see The CPU usage did go up, actually, by quite a bit. But then I tried it again but with Chrome closed and there was no effect so now I can't tell if was a coincidence or not
[QUOTE=NiandraLades;46414648]I just ran my fingers quickly over this laptop's track pad, just to see The CPU usage did go up, actually, by quite a bit. But then I tried it again but with Chrome closed and there was no effect so now I can't tell if was a coincidence or not[/QUOTE] Same happened to me, it went from 8% up to around 20% just from scrolling up and down really fast
[QUOTE=Metalcastr;46413174]High polling rates use a surprising amount of CPU utilization. If you have a variable polling rate mouse, try 1000hz and see your CPU spike when moving around.[/QUOTE] This. This the reason The cpu isn't being used to draw to the screen, it's being used to deal with the huge number of hardware interrrupts the touch pad is spamming out in a timely manner, as well as to analyze the data coming out of the touch pad to try and figure out what gesture the user is doing. High cpu usage should be expected, though 100% cpu usage is pretty fucking excessive [editline]a[/editline] Scratch that, the article in the OP is fucking bullshit. If you follow the link in the article to the source, 100% cpu utilization is never mentioned. The CPU ramps up to 100% [b]clockspeed[/b] during scrolling. The post the article is referencing is some clueless idiot complaining about how his laptop keeps ramping up to full power state whenever he scrolls. The article is written by some clueless idiot who misunderstood the entire situation. This is a non-issue. Every mobile device, ASUS or not, does exactly the same thing. Otherwise you end up with a super unresponsive user interface.
scrolling and managing input from a capacitive device is ridiculously intensive for the relatively menial task being performed. Android still can't get it right, even. though L makes improvements on the area, it drops below 60fps a lot. Apple pretty much perfected scrolling in OS X/iOS through amazing power management and optimization, and Microsoft did it in WP8 too.
MY TIME MACHINE. IT WORKED. I'VE SUCCESSFULLY TRAVELED 10 YEARS BACK IN TIME.
[QUOTE=.Lain;46415325]scrolling and managing input from a capacitive device is ridiculously intensive for the relatively menial task being performed. Android still can't get it right, even.[/QUOTE] NO WONDER scrolling on android always felt choppy! I thought that I was only experiencing smoother transitions on Win8 and iOS because of personal bias
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