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Mouse movement = DPC Spikes?

post #1 of 7
Thread Starter 
I've noticed something strange and was just wondering if it's normal? If my mouse (G400) is plugged in to a USB 2.0 port my DPC latency increases from 8us to 55-80us while I'm moving the mouse, but if I use the asmedia USB 3.0 ports the DPC doesn't increase at all, just stays between 8 and 14us no matter how much I move the mouse. Any fixes? Or is it normal?
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post #2 of 7
some USB hubs have trouble with Polling rates. check it with mouserate.exe to confirm.
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Brown Bomber
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post #3 of 7
Thread Starter 
Quote:
Originally Posted by Lever Guy View Post

some USB hubs have trouble with Polling rates. check it with mouserate.exe to confirm.

I've tried all four polling rate settings (125, 250, 500, 1000), all of them are stable but I still get spikes when using any of the USB 2.0 ports.
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K @ 4.5GHZ  ASUS P8Z77-V GTX 780 DirectCU II @ 1200/1700 G-SKILL 8GB 1600Mhz RIPJAWSX 
Hard DriveHard DriveCoolingMonitor
C400 128GB (OS) C400 256GB (GAMES) HYPER 212 PLUS BenQ XL2411T 
PowerCaseMouseMouse Pad
ANTEC TRUEPOWER 650W CORSAIR 500R KANA V2 QCK+ 
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K @ 4.5GHZ  ASUS P8Z77-V GTX 780 DirectCU II @ 1200/1700 G-SKILL 8GB 1600Mhz RIPJAWSX 
Hard DriveHard DriveCoolingMonitor
C400 128GB (OS) C400 256GB (GAMES) HYPER 212 PLUS BenQ XL2411T 
PowerCaseMouseMouse Pad
ANTEC TRUEPOWER 650W CORSAIR 500R KANA V2 QCK+ 
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post #4 of 7
While using G100s, my lowest DPC latency is 2 at idle, then while moving the mouse around as fast as possible, it goes up to 24. (while connected to usb 2.0 port)
post #5 of 7
Thread Starter 
Could it be caused by Windows using the older USB drivers? Looking through device manager under the USB controller section most of the devices are using 6.1.7600.16385 drivers, but in /system32/drivers the drivers that device manager points to are version 6.1.7601.17586. So, device manger shows that it is using version 6.1.7600.16385 for various USB related devices whereas newer versions are available in the /system32/drivers directory.
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K @ 4.5GHZ  ASUS P8Z77-V GTX 780 DirectCU II @ 1200/1700 G-SKILL 8GB 1600Mhz RIPJAWSX 
Hard DriveHard DriveCoolingMonitor
C400 128GB (OS) C400 256GB (GAMES) HYPER 212 PLUS BenQ XL2411T 
PowerCaseMouseMouse Pad
ANTEC TRUEPOWER 650W CORSAIR 500R KANA V2 QCK+ 
  hide details  
Reply
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K @ 4.5GHZ  ASUS P8Z77-V GTX 780 DirectCU II @ 1200/1700 G-SKILL 8GB 1600Mhz RIPJAWSX 
Hard DriveHard DriveCoolingMonitor
C400 128GB (OS) C400 256GB (GAMES) HYPER 212 PLUS BenQ XL2411T 
PowerCaseMouseMouse Pad
ANTEC TRUEPOWER 650W CORSAIR 500R KANA V2 QCK+ 
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post #6 of 7
There's a windows update to address that issue under optional updates. I install Service Pack 1 immediately after the windows install (before the chipset driver) to avoid the issue.
post #7 of 7
Thread Starter 
Quote:
Originally Posted by r0ach View Post

There's a windows update to address that issue under optional updates. I install Service Pack 1 immediately after the windows install (before the chipset driver) to avoid the issue.
I'm using an iso from dreamspark which has SP1 pre-installed, so I'm not sure if that bug applies to me.

This isn't really a big deal but I'm just curious as to why USB 2.0 causes DPC to increase by so much compared to USB 3.0.
Edited by 6600LE - 5/12/13 at 8:19am
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K @ 4.5GHZ  ASUS P8Z77-V GTX 780 DirectCU II @ 1200/1700 G-SKILL 8GB 1600Mhz RIPJAWSX 
Hard DriveHard DriveCoolingMonitor
C400 128GB (OS) C400 256GB (GAMES) HYPER 212 PLUS BenQ XL2411T 
PowerCaseMouseMouse Pad
ANTEC TRUEPOWER 650W CORSAIR 500R KANA V2 QCK+ 
  hide details  
Reply
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K @ 4.5GHZ  ASUS P8Z77-V GTX 780 DirectCU II @ 1200/1700 G-SKILL 8GB 1600Mhz RIPJAWSX 
Hard DriveHard DriveCoolingMonitor
C400 128GB (OS) C400 256GB (GAMES) HYPER 212 PLUS BenQ XL2411T 
PowerCaseMouseMouse Pad
ANTEC TRUEPOWER 650W CORSAIR 500R KANA V2 QCK+ 
  hide details  
Reply
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