DPC (Deferred Procedure Call) is a mechanism adopted by Microsoft which allows high-priority tasks on Windows (such as an interrupt handler) to defer required but lower-priority tasks for later execution.

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Are DPC latency issues improved with multiple cores?

DPC latency checker says A device driver cannot process data immediately in its interrupt routine. It has to schedule a Deferred Procedure Call (DPC) which basically is a callback routine ...
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Windows 8 audio stutters. DPC Latency high on tcpip.sys

I own a Intel Core i5 760 CPU based PC. 16Gb of RAM, AMD Radeon HD 7850, Asus Xonar DSX audio card, and a Creative Sound Blaster Sigma headset (with USB audio device). It's just to enumerate all my ...
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Usb wireless adapter causing DPC spikes

Bought 2 new TP-LINK WN722N USB wirless adapters as they were the highest rated on Newegg and were a great price. Both of them cause abnormally high DPC & Interrupt usage in Process Explorer and ...
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Fresh Win7 installed with SSD. All known drivers updated - high hard pagefaults

I previously had a thread with nasty pagefaults where the main culprit was my HDD was actually failing. I received a new SSD this week and reinstalled Windows 7, since then things have been insanely ...
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I'm having DPC latency issues with my computer

The LatencyMon report will be added to the end of this. I recently got a modi and magni amp and dac combo and I've had audio stuttering issues. Here is a image of all my drivers I was told that I ...
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High Interrupt DCP processor take

I have a quad core laptop with win7. Around 3 months ago the laptop occasionally slowed down. Resource Monitor and Process Explorer show that processor 0 was 100% busy with DCP and Interrupts. A ...