experts with Latency Mon?

[Subbes]

You can try to uninstall the drivers for you Graphics Card and run the standard drivers from Windows. I had big probs with my NVidea Drivers when I was running a Windows Laptop with Traktor.

[bumtsch]

LatencyMon is only used to investigate small glitches like pops and crackles. Your issues seem more severe, and the report you linked looks ok latency wise.

I wouldn't say that - the first line of that report is pretty clear nonetheless :

Your system appears to be having trouble handling real-time audio and other tasks. You are likely to experience buffer underruns appearing as drop outs, clicks or pops.

The big spikes are not all the 19ms highest measured interrupt call's fault, whose cause is unidentified in the report and is probably worth looking into at some point.

(Highest measured interrupt to process latency (µs): 19059.096835)

Indeed, the usual suspect Mr Networking is pretty quiet below half a ms

(Highest DPC routine execution time (µs): 507.023272
Driver with highest DPC routine execution time: ndis.sys - NDIS 6.20 driver, Microsoft Corporation)

This is much more interesting though, some noticeable HDD thrashing :

Process with highest pagefault count: msmpeng.exe

Total number of hard pagefaults 2141
Hard pagefault count of hardest hit process: 2011
Highest hard pagefault resolution time (µs): 188397.940566
Total time spent in hard pagefaults (%): 1.307646
Number of processes hit: 4

That'll amount to a 188ms long hdd hit.
msmpeng.exe is part of Windows Defender. Try shutting that off.

That won't cure it all though, but it's worth a start. I tried making my i5 laptop run to numbers like yours by switching to a balanced power profile, keeping stuff opened and playing a set in traktor and I'm only getting minor glitches, but still can't match that long kind of pagefault.

You might wanna monitor during a set, with a process explorer window tucked to the side. I'd also throw dpclat in the mix, you might see a pattern there.

[makar1]

That'll amount to a 188ms long hdd hit.
msmpeng.exe is part of Windows Defender. Try shutting that off.

I got plenty of long hard pagefault times in my LatencyMon test (60ms+), but it did not affect my audio. Note another line in the report: " some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops"
Windows Defender does not produce audio so it could be something else causing the problems.

I'd also throw dpclat in the mix, you might see a pattern there.

LatencyMon has already provided plenty of DPC latency readings, all at 500us and below. I can't see any benefit from doing it again with DPCLat.

[bumtsch]

Seeing a graph live helps sometimes.