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High DPC on 2600k system

post #1 of 4
Thread Starter 
I already posted this in the Ati section but I'm quite sure it's not GPU related.

When I run DPC Latency checker, I keep getting around 500 with higher spikes when I watch a youtube video with sound enabled (I get a red bar of like 2K µs)

When I disable sound in device manager, I only get about 500µs while watching a youtube video (which is still far too high, should be like 10-20µs)

It also happens when I click the speaker icon on the taskbar (to make the beep sound), everytime I click it....I get ~1000 µs

I have an Asrock P67 Extreme6 and the onboard sound really does look like it has a problem...thing is, with onboard sound disables...I still get ~500µs....so there's another thing causing it too.
post #2 of 4
The only way to fix this is to have a Realtime OS. Because of the way Windows works with kernels and programs you will see delays.

http://www.thesycon.de/deu/latency_check.shtml

I run a MOTU Ultralite MK3, overtime it will degrade in performance giving me audio lag if I run it for like 8+ hours. I have to do a full system reset to fix the latency problem.

But what you can do is try to disable every device one by one to find out which device is causing the most latency problems. It could be possible that it is a program causing the problem. So shut down any unnecessary programs you aren't using like AV, audio, video, etc...This is the main reason why people need dedicated DAW's (Digital Audio Workstations) that only do audio work because of the high latency that can occur when working with audio and operating systems.

"There is no guarantee that certain (periodic) actions can be executed in a timely manner."

Pretty much there's no guarantee when your cpu will execute a line of code and return the data back within a certain time frame. It would be nice to have a desktop RTOS but most are designed to work with embedded devices.

I'd be interested in seeing the latency performance in an H67 machine. Technically you get GPU/CPU in a package and that means you do not need to have many PCI/PCIE devices hooked up to your PC slots taking up IRQ's. This would in term theoretically reduce latency.

10-20µs is insane, my old system gets like 500µs. I don't know what's causing my spike though, but the when it is green it's at about 50-60µs. But there's not much you can do but to find which programs/devices causes the most latency. And when you do find out which program causes it then you will know which programs to avoid running together with other programs.

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Skylake Is Here!
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Intel i7 6700K Batch #L535B021 4.7Ghz @ 1.296V GIGABYTE G1 Gaming GA-Z170X-Gaming 7 EVGA Geforce GTX 970 SSC ACX 2.0+ G.SKILL TridentZ 16GB DDR4 3000 
Hard DriveHard DriveHard DriveCooling
Samsung 950 Pro M.2 512GB  Crucial BX100 250 GB SanDisk SSDPlus 240 GB NZXT Kraken X61  
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Windows 8.1 & 10 Dell UltraSharp 2913WM 21:9 2560x1080 Ducky Shine 4, CODE WASD, Deck Legend, G710+ EVGA SuperNova G2 850W 
CaseMouseMouse PadAudio
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post #3 of 4
Thread Starter 
I understand but it's a bit worrying when I get red bars as soon as I start audio.

I haven't played a game yet but I'm affraid I'm gonna get drops/stutters/skips
post #4 of 4
My old system the average was 500µs, when I played games it reached 2000µs but the sound didn't lag in BFBC2. But it would eventually degrade overtime at least this is true for MOTU Ultralite MK3. I couldn't really find a fix for it. But as long as your sound doesn't stutter or degrade then you'll be fine. It's when the sound starts degrading and you hear crackling noises and stutter is when you should worry about it. But for DAW you will also be fine, just shutdown any program that you're not using and open up your audio application. I don't get any lag or latency problems doing it this way.
Skylake Is Here!
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CPUMotherboardGraphicsRAM
Intel i7 6700K Batch #L535B021 4.7Ghz @ 1.296V GIGABYTE G1 Gaming GA-Z170X-Gaming 7 EVGA Geforce GTX 970 SSC ACX 2.0+ G.SKILL TridentZ 16GB DDR4 3000 
Hard DriveHard DriveHard DriveCooling
Samsung 950 Pro M.2 512GB  Crucial BX100 250 GB SanDisk SSDPlus 240 GB NZXT Kraken X61  
OSMonitorKeyboardPower
Windows 8.1 & 10 Dell UltraSharp 2913WM 21:9 2560x1080 Ducky Shine 4, CODE WASD, Deck Legend, G710+ EVGA SuperNova G2 850W 
CaseMouseMouse PadAudio
Phanteks Enthoo Evolv ATX Mid-Tower Ducky Secret SteelSeries Fostex Purple Heart TH-X00 
Audio
AKG K553 Pro, Philips SHP9500, Superlux 668B, S... 
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Skylake Is Here!
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 6700K Batch #L535B021 4.7Ghz @ 1.296V GIGABYTE G1 Gaming GA-Z170X-Gaming 7 EVGA Geforce GTX 970 SSC ACX 2.0+ G.SKILL TridentZ 16GB DDR4 3000 
Hard DriveHard DriveHard DriveCooling
Samsung 950 Pro M.2 512GB  Crucial BX100 250 GB SanDisk SSDPlus 240 GB NZXT Kraken X61  
OSMonitorKeyboardPower
Windows 8.1 & 10 Dell UltraSharp 2913WM 21:9 2560x1080 Ducky Shine 4, CODE WASD, Deck Legend, G710+ EVGA SuperNova G2 850W 
CaseMouseMouse PadAudio
Phanteks Enthoo Evolv ATX Mid-Tower Ducky Secret SteelSeries Fostex Purple Heart TH-X00 
Audio
AKG K553 Pro, Philips SHP9500, Superlux 668B, S... 
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