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MagicAndre1981

How to get the cause of high CPU usage by DPC / Interrupt

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Okay, I see how I had got it overclocked now, I had set the system to "optimal" in the EZ version of the BIOS which apparently automatically overclocks the system (it would have been nice if the manual made it clear that overclocking would occur if that was picked!). I've set it to normal mode and checked in the advanced BIOS and it is now set to the correct frequency of 3.6 ghz.

Should I run another xperf now that overclocking is off?

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now you only have 4 spikes:

Total = 4536 for module tcpip.sys

Elapsed Time, > 2048 usecs AND <= 4096 usecs, 0, or 0.00%

Elapsed Time, > 4096 usecs AND <= 8192 usecs, 4, or 0.09%

Total, 4536

update the Intel® Gigabit CT Desktop Adapter drivers.

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still the same. Try to plug the card into a different PCIe slot and make sure all offloading settings are enabled in the driver options.

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All of the offloading settings were already enabled. The only other PCIe slot on the motherboard is blocked by the video card -- the video card is in the slot designated for vid cards in the motherboard manual, and its fan is large enough to basically take up 2 slots (Geforce 9800 GT). The motherboard has an on-board Realtek LAN, but the DPCs were much worse when it was enabled (which is why I bought the Intel card).

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update the BIOS to 5206 and try to use the GPU in the 2nd PCIe x16 slot (no matter what is written in the manual). if you don't play games, you can also remvoe the 9800 completely and use the HD7540d which is included in the AMD CPU.

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Knifemaster    0

Hello. Sometimes my PC suffers from high CPU usage by Interrupts

My specs are:

Intel Core 2 Duo E6600@2.4GHz

Asus P5W DH Deluxe

2x2GB OCZ DDR2 800Mhz

Asus GTX260

Windows 7 Ultimate 64 bits

Three SATA hard disks (WD Caviar Green 2TB, WD VelociRaptor 1500HLFS and a Maxtor HDD)

I followed the steps of the first post a here are the results:

Process Explorer when CPU usage is around 30% by interrutps

ProcessExplorer_zpsb6b6a1c7.jpg

DPC Latency Checker running when the high cpu usage occurs

DCPLatencyChecker_zps8bfa0aa4.jpg

Windows Performance Analyzer showing DPC and Interrupt CPU usage

Performanceanalysis_zps80b81dc6.jpg

Summary table

SummaryTable_zpsef88083e.jpg

I've tried LatencyMon but when i press the 'Play' button the Interrupt CPU usage goes down.

EDIT: Here is another summary table that confirm the results:

SummaryTable2_zps69a025f9.jpg

On both cases, the CPU usage went down when cmd.exe created the 'DPC_Interrupt.etl' file

Here is the DPC_Interrupt.rar file.

Thanks for read me

Edited by Knifemaster

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FTMDan    0

Hey,

I am having audio crackling/stuttering issues on my computer. Specs are below as well as the link to download the DPC_Interrupt.etl file:

CPU: Intel i5 2500K

Motherboard: ASUS P8Z68-V/GEN3 - Latest BIOS version 3603

RAM: 16GB (4 x 4GB) DDR3 Corsair RAM 1.5v

Graphics: nVidia GTX 560Ti 1GB

Sound Card: Asus Xonar DG

Storage: Samsung 830 128GB SSD + Crucial M4 64GB SSD + 2TB HDD

File link: http://www.mediafire.com/?5l186ufsv8cc6ij

AFAIK, I have the latest BIOS version, nVidia drivers, Xonar DG drivers as well as having all Windows Updates installed. No viruses or malware either.

EDIT: Never mind, turns out Malwarebytes was the culprit (Had the trial of the Pro version that constantly runs in the taskbar, not sure if the regular version does the same thing?)

Edited by FTMDan

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