I'm so fed with Win XP but I'm not sure the Mac route is the solution either, seems like people experience almsot as much problems on Mac's.
A specialty built PC running Linux is tempting but then you run into problems finding software and drivers for some hardware.
All this crap should be a thing of the past really I don't mean to be insulting, but how does memory have direct effect on DPC Latency? No one has defined DPC Latency for me yet. When the device or cpu do not respond, DPC latency spikes occur. Yea, I know the bastard children known as jusched and qtask.
When I'm running DPC latency checker, only background process show. Currently I'm running Windows 7 and don 't feel like reformatting again as the latency is similar to XP. First, programs being opened usually doesnt mean anything--its a component. Its just confusing you because it has nothing to do with any processes running. I know very little about its fine details and have fixed this problem more than once.
I know how you feel man.. Laptops are riddled with DPC problems to the point where many honest manufacturers will warn against using them It is usually the USB or the network card or chip looking for access. The spikes are caused by terrible designs, errors in hardware or software controlling the hardware, or just a plain disregard for audio I have found that 3 is the most common. They just dont have enough DAW users to justify fixing these things. One things many new DAW users dont understand is there are only a few machines that actually work flawlessly with audio.
The Intel P5k, P35, and P5b being a few of them. These motherboard chipsets take audio into account or just got lucky. Boot up with the generic VGA driver and test--or stick in an old video card This is how to find the problem djgizmoby disabling and removing each one by one. It can even be a wireless keyboard.
If its your mother boards chip set you probably screwed but you can try disabling each USB hub etc in your operating system but search your chipset on the web under audio pops and crackles and you will quickly find out if its a big offenderthe bad news is most chipsets except a few are going to cause some type of problem If you know any daw builder they know this topic like the back of their hands--they know what to use and the boatload of components to avoid.
My Studio. In Windows 7 64 it's about I realise that this thread is about a year and a half old, but I've found it through Google while trying to sort some shit out on my PC and thus far it's been fairly helpful. I downloaded the latency checker and it checked all the latencies which are most definitely there for the checking. Now I'm looking for a solution. I'm reasonably sure that the issue I'm having is with my wireless card, but I want to be sure before taking any action, so I tried downloading that process monitor in StereoPari's post.
Could someone please tell me what I should be looking for with the process monitor? There's a filter on it but I don't really know what I should be filtering and what is useful information.
I noticed my DPC latency was spiking to around microseconds on mouse usage. Normal idle being around 10 microseconds with all non-essential stuff shut down. Jacking the mouse directly into a USB port instead of into the USB hub cut those spikes down to 50 microseconds, much better. Might be worth checking that out if you are having DPC latency problems. Good advice. After disabling what I don't need it's never let me down.
Quality and priority for audio definitely differs from manufacturer to manufacturer but it's entirely possible to get a great audio machine without much tweaking.
Ok I'll have a go - and I'm sure someone will jump in to correct if I get any details wrong And it hasn't got anything to do with background processes - it's about device drivers - it's a software problem.
Deferred Procedure Calls are basically a mechanism with which Windows handles interrupt servicing. As you might know interrupts are a mechanism with which devices can proactively signal they need attention from the processor - e.
Hundreds or thousands of interrupts are occuring every second within a PC. Windows needs to manage and prioritise these - critical interrupts might be handled in full immediately, whereas lower priority requests will be queued - and this is where DPCs come in.
Windows will acknlowledge the interrupt and queue it - and come back to actually do something about it later. An interrupt from an audio interface to say there is some audio data available isn't considered critical. The driver uses the DPC mechanism in Windows along with most other devices. So even if the audio interface needs data for its buffer for output or has data avaialble in its buffer for input the actual audio driver code that will move this data isn't actually invoked till Windows gets round to processing the relevant DPC item on the queue.
This is where problems can occur. The tests where done with 5. Values are approximates. Don't compare Windows XP results with those of Windows 7. Windows 7 is a clean install where Windows XP is fully loaded with programs.
This doesn't mean that if you disable autostartup for Realtek Panel you will get better results. ASUS Xonar drivers are special and issues pop-up where they shouldn't. Here are 2 examples where increased network activity rises DPC latency. If you have problems with high DPC latency, here are some quick tips that can lower it:. Some good tips in regards to updating drivers and different performance enhancements can be read here by Von Dach. Tags: xonar dpc latency , realtek dpc latency , network dpc latency , lower dpc latency , fix dpc latency.
Alt 23 Feb CarvedInside 26 Feb TuN 17 Nov CarvedInside 18 Nov Is cmudaxp. Was the test done under the exact same conditions if audio was playing or not, if ASUS audio center was launched in that session? TuN 18 Nov I can test more tomorrow, let me know how do you want the test to be done.
On version , if you didn't have the audio playing, that could account for the different DPC latency reported by cmudaxp. If your computer is in sleep mode or was not shut down, restart it and do 2 tests, one with audio playing and one without. You still have Windows available as a boot option? I'm pretty sure I had audio playing. Sadly, I don't have the anymore. After I've upgraded to , I actually wanted to go back to because of the problems I've had with stuttering, but the option to go back to the earlier build is not even there.
I wonder which driver does it want to upgrade? I'll test this out hopefully today. CarvedInside 23 Nov They probably moved the option to revert back to previous version. With each version of Windows 10, MS is changing things and renaming things. I am not aware of them having any new driver, in fact they don't have any driver for the Xonar cards.
If you have any new info on this let me know. How to test for DPC latency? Apr 30, DPC Latency Checker is a tool that analyses the capabilities of a computer system to handle real-time data streams properly. It helps to find the cause for interruptions in real-time audio.
DPC Latency Checker 1. This latency monitoring software will tell you if there is a DPC latency issue, and it will also tell you which driver or drivers are causing the latency.
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