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USB polling precision - Page 26

post #251 of 802
Thread Starter 
Quote:
Originally Posted by RevanCorana View Post

Ok thanks this was with a g502 btw
Mouse doesn't really matter save some defects/bad firmware.

Your readings are indeed pretty good. That's 60 microseconds variation over a ~5 second span (i. e. a span long enough to account for regular processor idle activity), the bulk of the reports being handled within the 20 microseconds range. There's always room for improvement, but as I mentioned somewhere else, as long as you are not getting a few hundreds of microseconds variation mousing won't suffer.
post #252 of 802
Quote:
Originally Posted by HAGGARD View Post

Mouse doesn't really matter save some defects/bad firmware.

Your readings are indeed pretty good. That's 60 microseconds variation over a ~5 second span (i. e. a span long enough to account for regular processor idle activity), the bulk of the reports being handled within the 20 microseconds range. There's always room for improvement, but as I mentioned somewhere else, as long as you are not getting a few hundreds of microseconds variation mousing won't suffer.

Ok I already did see some mice that didnt quite reach 1000hz (stuck at around 800) but mostly were wireless ones.

How do yo know if a RAM timing is matching plus with what does it have to match exactly? CPU speed I assume?

Also do you think automatic drivers updaters are trustworthy?

Cool thread btw thumb.gif
post #253 of 802
@HAGGARD, what do you mean by "game is less responsive" when NVIDIA Display Driver Service is disabled?
post #254 of 802
Not sure if off-topic or on topic here, but there's zero difference between usb 3.0 and usb 2.0 for a mouse right? From what I understand the 3.0 port will just act as a 2.0 port if you plug a 2.0 device (like a mouse) into it. Been using it without problem but curious if anyone researched/looked into it. I couldn't use 2.0 anyway as those ports are defective/dead on my MB tongue.gif
post #255 of 802
Quote:
Originally Posted by ncck View Post

Not sure if off-topic or on topic here, but there's zero difference between usb 3.0 and usb 2.0 for a mouse right? From what I understand the 3.0 port will just act as a 2.0 port if you plug a 2.0 device (like a mouse) into it. Been using it without problem but curious if anyone researched/looked into it. I couldn't use 2.0 anyway as those ports are defective/dead on my MB tongue.gif

If you want to use your USB 3.0 as USB 2.0 ports, you can just disable the xHCI controller in your BIOS which is what I did.
    
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post #256 of 802
Quote:
Originally Posted by RevanCorana View Post

Thanks this is what my system looks like now what d'you think?


I just realized I'm an idiot and misread the decimal place. I like to see it a bit tighter personally (assuming your data was taken with nothing else running). I'll include data for my polling as an example. Still, I would say overall your polling is OK because your worst deviations are really not bad. It is very common to see people get frequent spikes to 0.5ms and 1.5ms, which is like 10x worse max deviation than yours. For the sake of science, redo the same type of measurement @ 500Hz for me. I'm interested to see if you're polling precision tightens considerably or not.



I purposely included an example that is showing a strange phenomenon I've seen uncommonly for as long as I can remember using MouseTester: spikes occurring in an increasing pattern at 100us interval over ~1 second. It is extremely unlikely this would even be perceptible, but curious if anyone has any idea as to what might explain this.
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post #257 of 802
Quote:
Originally Posted by Alya View Post

If you want to use your USB 3.0 as USB 2.0 ports, you can just disable the xHCI controller in your BIOS which is what I did.

I see but is there any reason to do that? I'm using the rear panel 3.0 ports which I believe use an intel chipset, seems to be exactly the same as the rear panel 2.0 ports. If anyone has any info let us know.. but from actual usage I personally see no difference!
post #258 of 802
Quote:
Originally Posted by ncck View Post

I see but is there any reason to do that? I'm using the rear panel 3.0 ports which I believe use an intel chipset, seems to be exactly the same as the rear panel 2.0 ports. If anyone has any info let us know.. but from actual usage I personally see no difference!

Not really a difference no, I only did it because USB3.0 wasn't supported natively in Win7, the biggest difference I've noticed in mouse feeling is using your mouse and keyboard on different hubs.
    
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post #259 of 802
I'm really curious, is there any way or possibility, to lock the usb polling rate? Like, when I move the mouse very slowly, the polling rate goes down. I understand it's because of moving slowly, but wouldn't it be more accurate running a higher polling rate even when moving slowly?

Like, If my mouse has a max polling rate of 500hz, could I lock it to be 500hz at all speeds? Is that possible, even to just experiment?
post #260 of 802
Quote:
Originally Posted by whiteweazel21 View Post

I'm really curious, is there any way or possibility, to lock the usb polling rate? Like, when I move the mouse very slowly, the polling rate goes down. I understand it's because of moving slowly, but wouldn't it be more accurate running a higher polling rate even when moving slowly?

Like, If my mouse has a max polling rate of 500hz, could I lock it to be 500hz at all speeds? Is that possible, even to just experiment?

 

 

The polling rate itself doesnt drop, the mouse just simply reports less at lower speeds.

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