Desperate in need of help

[lilvaratep]

I keep getting DPC latency spikes up to 200k ns. I keep getting audio/video stutters as well. I tried disabling dvd drives, uninstalling asmedia sata drivers, updating bios, different graphics card. stutters in game as well as on desktop. I notice it when I'm watching videos online or playing video games. A lot fo the times I will also see a latency spike, but won't get audio/video stutter, at least it wasn't noticeable.



msi gd65 z77 1155
corsair vengeance low profile 2x4GB 1600
antec 750 w psu
7950 radeon hd msi tf3
120gb ssd corsair force (was open box item)
1tb hdd wd caviar green
16x dvd +- rw
v6 gt cpu heatsin
i5 3570k oc'd to 4.2ghz @ 1.2v with pll voltage set to 1.65v




Here's results from latencymon and dpc latency checker:

_________________________________________________________________________________________________________
CONCLUSION
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Your system appears to be having trouble handling real-time audio and other tasks. You are likely to experience buffer underruns appearing as drop outs, clicks or pops. One problem may be related to power management, disable CPU throttling settings in Control Panel and BIOS setup. Check for BIOS updates.
LatencyMon has been analyzing your system for 0:17:08 (h:mm:ss) on all processors in the system.


_________________________________________________________________________________________________________
SYSTEM INFORMATION
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Computer name: INTEGRATED-PC
OS version: Windows 7 , 6.1, build: 7600 (x64)
CPU: GenuineIntel Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz
Logical processors: 4
Processor groups: 1
RAM: 8135 MB total


_________________________________________________________________________________________________________
CPU SPEED
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Reported CPU speed: 3400.0 MHz
Measured CPU speed: 2654.0 MHz (approx.)

Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results.


_________________________________________________________________________________________________________
MEASURED KERNEL TIMER LATENCIES
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Highest measured kernel timer latency (µs): 13311.990459


_________________________________________________________________________________________________________
MEASURED SMIs AND CPU STALLS
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Highest measured SMI, IPI or CPU stall (µs) 0.903508


_________________________________________________________________________________________________________
REPORTED DPCs
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Highest DPC routine execution time (µs): 280.895882
Driver with highest DPC routine execution time: USBPORT.SYS - USB 1.1 & 2.0 Port Driver, Microsoft Corporation

Highest reported total DPC routine time (%): 0.069181
Driver with highest DPC total execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Total time spent in DPCs (%) 0.204425

DPC count (execution time <250 µs): 3591701
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 2
DPC count (execution time 1000-1999 µs): 0
DPC count (execution time 2000-3999 µs): 0
DPC count (execution time >=4000 µs): 0


_________________________________________________________________________________________________________
REPORTED ISRs
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Highest ISR routine execution time (µs): 42.369706
Driver with highest ISR routine execution time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation

Highest reported total ISR routine time (%): 0.016853
Driver with highest ISR total time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation

Total time spent in ISRs (%) 0.033934

ISR count (execution time <250 µs): 1284455
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 0
ISR count (execution time 1000-1999 µs): 0
ISR count (execution time 2000-3999 µs): 0
ISR count (execution time >=4000 µs): 0


_________________________________________________________________________________________________________
REPORTED HARD PAGEFAULTS
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Process with highest pagefault count: none

Total number of hard pagefaults 5790
Hard pagefault count of hardest hit process: 5255
Highest hard pagefault resolution time (µs): 99756.831765
Total time spent in hard pagefaults (%): 0.042125
Number of processes hit: 0


_________________________________________________________________________________________________________
PER CPU DATA
_________________________________________________________________________________________________________
CPU 0 Interrupt cycle time (s): 13.070075
CPU 0 ISR highest execution time (µs): 42.369706
CPU 0 ISR total execution time (s): 1.263310
CPU 0 ISR count: 1250353
CPU 0 DPC highest execution time (µs): 280.895882
CPU 0 DPC total execution time (s): 7.131256
CPU 0 DPC count: 3222032
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time (s): 2.249077
CPU 1 ISR highest execution time (µs): 13.662647
CPU 1 ISR total execution time (s): 0.105829
CPU 1 ISR count: 27592
CPU 1 DPC highest execution time (µs): 218.047647
CPU 1 DPC total execution time (s): 0.726019
CPU 1 DPC count: 205628
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time (s): 1.819085
CPU 2 ISR highest execution time (µs): 15.563529
CPU 2 ISR total execution time (s): 0.020229
CPU 2 ISR count: 5030
CPU 2 DPC highest execution time (µs): 169.065294
CPU 2 DPC total execution time (s): 0.342103
CPU 2 DPC count: 94560
_________________________________________________________________________________________________________
CPU 3 Interrupt cycle time (s): 1.449483
CPU 3 ISR highest execution time (µs): 16.197353
CPU 3 ISR total execution time (s): 0.006352
CPU 3 ISR count: 1480
CPU 3 DPC highest execution time (µs): 170.401765
CPU 3 DPC total execution time (s): 0.208604
CPU 3 DPC count: 69483
_________________________________________________________________________________________________________

 

[lilvaratep]

okay... I figured it's something wrong with my networking. Disabled my network adapter. Stared at dpc latency screen and enabled the network adapter. the kernel timer latency spiked up to red.

anyone know of any fixes for this?????????

 

[serpretetsky]

don't know of any fixes, but intel network cards can be found for pretty cheap.

edit: try either updating or rolling back the ethernet driver

edit2: have you tried disabling other devices as well? audio devices?

 

[lilvaratep]

yes. latency mon shows the activity mostly coming from my network.
using ethernet cord gives ndis.sys as the highest execution time.
using usb wireless gives usbport.sys as highest execution time. not sure what the reasoning is for this.

 

[tweakboy]

Lets figure out what device is causing this. Unplug all USB that you don't need. Keep mouse and keyboard only and see if it stutters and we take it from there. gl

 

[lilvaratep]

well it's the network usb device. It wasn't being caused by usb originally. Like I said,

using ethernet cord gives ndis.sys as the highest execution time.
using usb wireless gives usbport.sys as highest execution time. not sure what the reasoning is for this.