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Looking for help reducing DPC latency

post #1 of 5
Thread Starter 
I am looking for some help to reduce my DPC latency because of lately when I checked my DPC latency with a DPC latency checker is has been around 900 us to 2000+ us depending on what I do and when it starts getting around 1500+ us I get very bad audio cracking and video skips.

I was wondering if anyone knew of any solutions to reducing my DPC latency.

Also it gets worse when running any P2P network so if anyone knows any solution for that it would be appreciated.

Thanks
Bob's Computer
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CPUMotherboardGraphicsRAM
Intel i5 2500K MSI P67A-G45 MSI 6970 Lightning 2GB G Skill Ripjaws X (2x4GB) 1866mhz 9-10-9-28 
Hard DriveOptical DriveCoolingOS
Corsair Force 3 SSD (60GB), X1 WD5000AAKS, X1 W... ASUS DRW-24B1ST/BLK/B/AS Black SATA 24X DVD Burner Noctua NH-C14 Windows 7 64 bit 
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Asus VH238H Logitech G510 HALE90 750W NZXT Phantom Black 
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Logitech G9x SteelSeries 4HD ASUS Xonar DGX / Audio-Technica ATH-AD700 Hauppauge! HVR-1250 TV Tuner 
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Bob's Computer
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 2500K MSI P67A-G45 MSI 6970 Lightning 2GB G Skill Ripjaws X (2x4GB) 1866mhz 9-10-9-28 
Hard DriveOptical DriveCoolingOS
Corsair Force 3 SSD (60GB), X1 WD5000AAKS, X1 W... ASUS DRW-24B1ST/BLK/B/AS Black SATA 24X DVD Burner Noctua NH-C14 Windows 7 64 bit 
MonitorKeyboardPowerCase
Asus VH238H Logitech G510 HALE90 750W NZXT Phantom Black 
MouseMouse PadAudioOther
Logitech G9x SteelSeries 4HD ASUS Xonar DGX / Audio-Technica ATH-AD700 Hauppauge! HVR-1250 TV Tuner 
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post #2 of 5
Thread Starter 
Update: I found somewhat of a fix, but it still could be improved.

I went into the power settings for my desktop and it was set to balance and when I change to to high performance it cuts my DPC latency in half, but it is still somewhat high at 500 us.

if anyone has any other things I could try with this please feel free to say.
Bob's Computer
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 2500K MSI P67A-G45 MSI 6970 Lightning 2GB G Skill Ripjaws X (2x4GB) 1866mhz 9-10-9-28 
Hard DriveOptical DriveCoolingOS
Corsair Force 3 SSD (60GB), X1 WD5000AAKS, X1 W... ASUS DRW-24B1ST/BLK/B/AS Black SATA 24X DVD Burner Noctua NH-C14 Windows 7 64 bit 
MonitorKeyboardPowerCase
Asus VH238H Logitech G510 HALE90 750W NZXT Phantom Black 
MouseMouse PadAudioOther
Logitech G9x SteelSeries 4HD ASUS Xonar DGX / Audio-Technica ATH-AD700 Hauppauge! HVR-1250 TV Tuner 
  hide details  
Reply
Bob's Computer
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 2500K MSI P67A-G45 MSI 6970 Lightning 2GB G Skill Ripjaws X (2x4GB) 1866mhz 9-10-9-28 
Hard DriveOptical DriveCoolingOS
Corsair Force 3 SSD (60GB), X1 WD5000AAKS, X1 W... ASUS DRW-24B1ST/BLK/B/AS Black SATA 24X DVD Burner Noctua NH-C14 Windows 7 64 bit 
MonitorKeyboardPowerCase
Asus VH238H Logitech G510 HALE90 750W NZXT Phantom Black 
MouseMouse PadAudioOther
Logitech G9x SteelSeries 4HD ASUS Xonar DGX / Audio-Technica ATH-AD700 Hauppauge! HVR-1250 TV Tuner 
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post #3 of 5
You need to isolate what is causing the delays.

On a fresh install of the OS with all power managent disabled, what is the baseline DPC latency?
Once again...
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i7 920 [4.28GHz, HT] Asus P6T + Broadcom NetXtreme II VisionTek HD5850 [900/1200] + Galaxy GT240 2x4GB G.Skill Ripjaw X [1632 MHz] 
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Intel X25-M 160GB + 3xRAID0 500GB 7200.12 Window 7 Pro 64 Acer H243H + Samsung 226BW XARMOR-U9BL  
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Antec Truepower New 750W Li Lian PC-V2100 [10x120mm fans] Logitech G9 X-Trac Pro 
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Once again...
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 920 [4.28GHz, HT] Asus P6T + Broadcom NetXtreme II VisionTek HD5850 [900/1200] + Galaxy GT240 2x4GB G.Skill Ripjaw X [1632 MHz] 
Hard DriveOSMonitorKeyboard
Intel X25-M 160GB + 3xRAID0 500GB 7200.12 Window 7 Pro 64 Acer H243H + Samsung 226BW XARMOR-U9BL  
PowerCaseMouseMouse Pad
Antec Truepower New 750W Li Lian PC-V2100 [10x120mm fans] Logitech G9 X-Trac Pro 
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post #4 of 5
Thread Starter 
I am seeing most people running with a DPC of around less than 100 while mine is averaging at 550.

From what I can see is it is a power setting causing the majority of the problems.
Bob's Computer
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 2500K MSI P67A-G45 MSI 6970 Lightning 2GB G Skill Ripjaws X (2x4GB) 1866mhz 9-10-9-28 
Hard DriveOptical DriveCoolingOS
Corsair Force 3 SSD (60GB), X1 WD5000AAKS, X1 W... ASUS DRW-24B1ST/BLK/B/AS Black SATA 24X DVD Burner Noctua NH-C14 Windows 7 64 bit 
MonitorKeyboardPowerCase
Asus VH238H Logitech G510 HALE90 750W NZXT Phantom Black 
MouseMouse PadAudioOther
Logitech G9x SteelSeries 4HD ASUS Xonar DGX / Audio-Technica ATH-AD700 Hauppauge! HVR-1250 TV Tuner 
  hide details  
Reply
Bob's Computer
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 2500K MSI P67A-G45 MSI 6970 Lightning 2GB G Skill Ripjaws X (2x4GB) 1866mhz 9-10-9-28 
Hard DriveOptical DriveCoolingOS
Corsair Force 3 SSD (60GB), X1 WD5000AAKS, X1 W... ASUS DRW-24B1ST/BLK/B/AS Black SATA 24X DVD Burner Noctua NH-C14 Windows 7 64 bit 
MonitorKeyboardPowerCase
Asus VH238H Logitech G510 HALE90 750W NZXT Phantom Black 
MouseMouse PadAudioOther
Logitech G9x SteelSeries 4HD ASUS Xonar DGX / Audio-Technica ATH-AD700 Hauppauge! HVR-1250 TV Tuner 
  hide details  
Reply
post #5 of 5
Thread Starter 
Update: I narrowed it down a little bit more.

When I set the minimum processor state to 1% in the power management settings my DPC latency increases, but if I leave the minimum at %100 it is stable at a low state (300 us).

Now I really don't want to leave my CPU at a minimum of %100 so I am still looking for a more suitable fix.
Bob's Computer
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 2500K MSI P67A-G45 MSI 6970 Lightning 2GB G Skill Ripjaws X (2x4GB) 1866mhz 9-10-9-28 
Hard DriveOptical DriveCoolingOS
Corsair Force 3 SSD (60GB), X1 WD5000AAKS, X1 W... ASUS DRW-24B1ST/BLK/B/AS Black SATA 24X DVD Burner Noctua NH-C14 Windows 7 64 bit 
MonitorKeyboardPowerCase
Asus VH238H Logitech G510 HALE90 750W NZXT Phantom Black 
MouseMouse PadAudioOther
Logitech G9x SteelSeries 4HD ASUS Xonar DGX / Audio-Technica ATH-AD700 Hauppauge! HVR-1250 TV Tuner 
  hide details  
Reply
Bob's Computer
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 2500K MSI P67A-G45 MSI 6970 Lightning 2GB G Skill Ripjaws X (2x4GB) 1866mhz 9-10-9-28 
Hard DriveOptical DriveCoolingOS
Corsair Force 3 SSD (60GB), X1 WD5000AAKS, X1 W... ASUS DRW-24B1ST/BLK/B/AS Black SATA 24X DVD Burner Noctua NH-C14 Windows 7 64 bit 
MonitorKeyboardPowerCase
Asus VH238H Logitech G510 HALE90 750W NZXT Phantom Black 
MouseMouse PadAudioOther
Logitech G9x SteelSeries 4HD ASUS Xonar DGX / Audio-Technica ATH-AD700 Hauppauge! HVR-1250 TV Tuner 
  hide details  
Reply
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