MagicAndre1981

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

1,451 posts in this topic

It changes nothing i'm afraid. Still getting interrupts.

Would a faulty psu cause this? Its quite old.

Here's all my hardware as listed by my order reciepts, what my PC lists, all that.

P8Z77V-LX MOBO, 1502 BIOS version.

i5 3570k, No OC.

Corsair XMS3 1600MHz 16GB Vengeance CL9 (4x4Gig set)

Chieftec Super Series 750W PSU (Modular)

Gainward GeForce GTX670 2GB GDDR5 PCI-E

Razer Anansi keyboard.

Razer Deathadder 3.5G

Steelseries Siberia V2 Dig.Surround.

Edited by Furyclaw
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the PSu is fine.

Change the PCIe slot of the GPU. Does this help? Also look in the BIOS/UEFI if you have an option High Precision Event Timer (HPET). Change it's state and look if this fixes anything.

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Changed from top to bottom PCIe slot, no change.

Changed HPT (HPET) from Enabled to Disabled. No change.

=( This is getting frustrating xD

But I really appreciate the help.

Edited by Furyclaw
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Right. I'm really considering reverting back to my old system and RMA this MOBO. My friend was experiencing some of the same issues like this, and he sent his kit in, and when the new one arrived he saw none of the errors. When the new stuff gets here I will try again. Really can't see what is left that is causing the problems.

We've so far tried:

Power management settings. BIOS and Windows.

No USB devices connected vs. all connected.

Different GFX card. and different PCIe slots.

Brand new install of Windows.

Edited by Furyclaw
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Here comes the new .etl file, changes done: Removed all overclocking, AHCI mode on, new RST drivers for SATA

DPC_interrupt.zip

much better now:

Total = 26985 for module nvlddmkm.sys

Elapsed Time, > 0 usecs AND <= 1 usecs, 88, or 0.33%

Elapsed Time, > 1 usecs AND <= 2 usecs, 48, or 0.18%

Elapsed Time, > 2 usecs AND <= 4 usecs, 430, or 1.59%

Elapsed Time, > 4 usecs AND <= 8 usecs, 4793, or 17.76%

Elapsed Time, > 8 usecs AND <= 16 usecs, 12939, or 47.95%

Elapsed Time, > 16 usecs AND <= 32 usecs, 7293, or 27.03%

Elapsed Time, > 32 usecs AND <= 64 usecs, 800, or 2.96%

Elapsed Time, > 64 usecs AND <= 128 usecs, 429, or 1.59%

Elapsed Time, > 128 usecs AND <= 256 usecs, 143, or 0.53%

Elapsed Time, > 256 usecs AND <= 512 usecs, 19, or 0.07%

Elapsed Time, > 512 usecs AND <= 1024 usecs, 3, or 0.01%

Total, 26985

this activity comes from World of Warcraft. Do you have any issues? it looks ok, now.

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the values are ok now:

Total = 56270

Elapsed Time, > 0 usecs AND <= 1 usecs, 248, or 0.44%

Elapsed Time, > 1 usecs AND <= 2 usecs, 4308, or 7.66%

Elapsed Time, > 2 usecs AND <= 4 usecs, 18954, or 33.68%

Elapsed Time, > 4 usecs AND <= 8 usecs, 8788, or 15.62%

Elapsed Time, > 8 usecs AND <= 16 usecs, 8288, or 14.73%

Elapsed Time, > 16 usecs AND <= 32 usecs, 5649, or 10.04%

Elapsed Time, > 32 usecs AND <= 64 usecs, 8261, or 14.68%

Elapsed Time, > 64 usecs AND <= 128 usecs, 1752, or 3.11%

Elapsed Time, > 128 usecs AND <= 256 usecs, 21, or 0.04%

Elapsed Time, > 256 usecs AND <= 512 usecs, 1, or 0.00%

Total, 56270

only 1 spike between 256 and 512µs. So removing battery fixed it.

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Right. I'm really considering reverting back to my old system and RMA this MOBO. My friend was experiencing some of the same issues like this, and he sent his kit in, and when the new one arrived he saw none of the errors. When the new stuff gets here I will try again.

ok. Please reply here when you get the new Mobo and tell us if it is fixed or not.

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only 1 spike between 256 and 512µs. So removing battery fixed it.

But the CPU still remains at over 60% all the time, I don't know what's the average but I was told that 60% is very much having opened only Firefox, Chrome, a small editor and Explorer

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Here comes the new .etl file, changes done: Removed all overclocking, AHCI mode on, new RST drivers for SATA

DPC_interrupt.zip

much better now:

Total = 26985 for module nvlddmkm.sys

Elapsed Time, > 0 usecs AND <= 1 usecs, 88, or 0.33%

Elapsed Time, > 1 usecs AND <= 2 usecs, 48, or 0.18%

Elapsed Time, > 2 usecs AND <= 4 usecs, 430, or 1.59%

Elapsed Time, > 4 usecs AND <= 8 usecs, 4793, or 17.76%

Elapsed Time, > 8 usecs AND <= 16 usecs, 12939, or 47.95%

Elapsed Time, > 16 usecs AND <= 32 usecs, 7293, or 27.03%

Elapsed Time, > 32 usecs AND <= 64 usecs, 800, or 2.96%

Elapsed Time, > 64 usecs AND <= 128 usecs, 429, or 1.59%

Elapsed Time, > 128 usecs AND <= 256 usecs, 143, or 0.53%

Elapsed Time, > 256 usecs AND <= 512 usecs, 19, or 0.07%

Elapsed Time, > 512 usecs AND <= 1024 usecs, 3, or 0.01%

Total, 26985

this activity comes from World of Warcraft. Do you have any issues? it looks ok, now.

I dont know, I still have the System Interrupt activity at 0.5-1% usage all the time...

I've uploaded a clean file with no games running:

DPC_interrupt.zip

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only 1 spike between 256 and 512µs. So removing battery fixed it.

But the CPU still remains at over 60% all the time, I don't know what's the average but I was told that 60% is very much having opened only Firefox, Chrome, a small editor and Explorer

the trace you gave me doesn't show the CPu usage. you must capture the trace at the time you have the issue ;)

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I dont know, I still have the System Interrupt activity at 0.5-1% usage all the time...

I've uploaded a clean file with no games running:

DPC_interrupt.zip

this time it is again the nVIDIA driver with 2 small spikes:

Total = 9293 for module nvlddmkm.sys

Elapsed Time, > 256 usecs AND <= 512 usecs, 1, or 0.01%

Elapsed Time, > 512 usecs AND <= 1024 usecs, 1, or 0.01%

Total, 9293

do you have an audio or video glitches caused by DPCs?

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the trace you gave me doesn't show the CPu usage. you must capture the trace at the time you have the issue ;)


That's the problem, it's not about spikes, it's about a constant high CPU usage:

Removed: Malware

Could it be "normal" for my specs?

System Manufacturer Hewlett-PackardSystem Model Compaq Presario CQ61 Notebook PCSystem Type x64-based PCProcessor Pentium(R) Dual-Core CPU T4400 @ 2.20GHz, 2200 Mhz, 2 Core(s), 2 Logical Processor(s)BIOS Version/Date Hewlett-Packard F.20, 13-Oct-09Installed Physical Memory (RAM) 4.00 GBName NVIDIA GeForce G 103MAdapter RAM 512.00 MB (536,870,912 bytes)Driver Version 9.18.13.697

I uploaded another capture again here, if you can't see the problem I give up and try and bare with it, I bothered you enough, sorry. Edited by xper
Removed image
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the trace you gave me doesn't show the high CPU usage. Your 80 is idle for 80%.

But I can see that you use ProcessHacker. Inside the tool click on Hacker->Options->advanced and uncheck the option "enable cycle based CPU usage". Now restart ProcessHacker. Do you still have the high CPU usage reported?

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