DPC Latency issue Gigabyte EX58-Extreme

[Darryl_Gittins]

Hmm,for a whole day after reboot it's fine?

How about disabling the OS Performance counters, you'll need to Google how to do that. Maybe it is those counters stacking up data and then after a day or so starts causing issues?

That's a crazy idea... I like it!! I'll give that a whirl. Thanks man!!

[Lsdmeasap]

Anytime!

If you can't find how to do that let me know and I'll dig around for you and see if I can find it. I know you can do it though as I've seen it suggested in SSD tweak suggestions at a few places

[Darryl_Gittins]

I was able to disable it using the steps and link here: Make Windows Run fast by Disabling Performance Counters*|*Internet Security Blog

Now I wait a few hours and see what happens!

[Lsdmeasap]

Cool, how did the tests go with that?

[Darryl_Gittins]

Waaah! No luck. The DPC spikes are back. :(
Thanks for the suggestion though!

I'm going to try swapping out RAM next. Other than the CPU, I think that's the only thing I haven't swapped (hardware wise).

[Lsdmeasap]

Did you try a clean install, just for testing with no drivers or programs loaded?

How about a PCI Card instead of PCIE, in case the ones you tested with both cause issues.

[Darryl_Gittins]

I tried a new install of W7 x64 and saw the dpc spikes right away before I even ran Windows Update. Ugh. (I recall I also swapped out the Power supply a while ago).

Next, I will try pulling RAM, and then try tracking down a PCI based video card as you suggest.

Thanks again, man!

[Lsdmeasap]

I'd just go ahead with the PCI test, on a clean install, no updates or drivers (no drivers for the PCI Card either)

[aaakey]

Darryl_gittins, I have exactly the same problem and same behavior with EX58 extreme win7 64bit using internal sound and 2 network cards. Reinstalled NETWORK drivers from http://download.gigabyte.ru/driver/m...ek_8111_w7.exe And it seems latency goes OK without restart.
I will see, if it will be working well.

[imdrecordings]

Use this to narrow down what's causing the spike.
Helped me get my HP laptop to peak at 80units.
This will help you narrow it down for SURE :-)
Resplendence Software - LatencyMon: DPC, ISR and pagefault execution monitor

Usually network cards,lan,drivers, wifi are to blame.
Others are graphics drivers.
My Hp laptop kept getting a spike and Latencymon pointed to NDIS.sys as causing the spike, which is keyed by my wifi network.
Disable the wifi and the spike disappeared!