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  1. #1
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    PC's built for DAW application - high interrupt to service routine times

    I've built two systems configured as follows:

    Asus PRIME Z690-A motherboard
    I9-12900K (system 1)
    I7-12700K (system 2)

    XPG Lancer DDR5 2x 16GB modules (both Systems
    Running 5200 XMP 1

    Sabrent 4tb Rocket Q4 NVME M.2 drive (system 1)
    Samsung,980 PRO 2TB NVME M.2 drive (system 2)


    On-board Intel graphics (both systems)

    Win 11 pro (both systems)

    Both systems running latest BIOS 1403

    Intended purpose of both systems is real-time audio processing (DAW application)


    No overclocking other than memory XMP Have disabled the following MB CPU features:


    Turbo Mode
    Turbo Boost
    Speed Stepping

    Disabled the following WIN 11 features:
    Changed power management such that the system never goes to sleep, never suspends, never turns off display,


    Using Latency Monitor software I notice that there are some very high Interrupt to process times (in excess of 20000 uS)
    which will render the system useless for real-time audio processing. The spikes occur within 10 first minutes of starting the system. After 10 minutes or so of running the system will stay relatively stable with low interrupt to service execution times however, these spikes still occur albeit not very often after the initial 10 minutes of running.


    I'm hoping for a new BIOS release which may help this problem. When is the next BIOS release due? Anybody else have any suggestions as to how to eliminate the high Interrupt to service execution time spikes?
    Last edited by Boxerdad; 05-07-2022 at 12:57 PM. Reason: spelling errors

  2. #2
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    I also have a Prime Z690-A with an I9-12900K... primarily a gaming machine, but I always build my machines with recording in mind since I've done a lot of DAW work in the past. I've done some limited testing with my UAD Apollo and some old projects in Cubase 11 and was able to run at low buffer settings without any issues (Cubase 12 seems to be running into buffering issues across platforms, so waiting for the dust to settle there). LatencyMon is usually hovering around 100-400uS, but my highest DPC routine execution did jump to ~3500uS as I test it right now. Still, that is a far cry from 20000uS, and I have a few gigs worth of unneeded processes running.

    What file is causing the LatencyMon spikes? In the past, I've always found that spikes were caused by drivers... Be sure to update to all of the latest drivers that MoKiChU provides in these forums, if you haven't already. Since you are running NVME drives, you can disabled the VMD controller and everything else SATA related in the BIOS. Beyond that, you may want to try disabling the onboard ethernet and Realtek audio to see if you can narrow things down further.

    I can PM you my BIOS settings as well if you'd like to compare, although I don't do anything special other than disabling unneeded devices. Windows 11 is also at default power settings, other than disabling sleep or power savings on hard drives, ethernet, USB devices, and other devices I want to stay awake such as my Thunderbolt controller.

    Hope this is helpful!

  3. #3
    Administrator Array Silent Scone@ROG's Avatar
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    Quote Originally Posted by Boxerdad View Post
    I've built two systems configured as follows:

    Asus PRIME Z690-A motherboard
    I9-12900K (system 1)
    I7-12700K (system 2)

    XPG Lancer DDR5 2x 16GB modules (both Systems
    Running 5200 XMP 1

    Sabrent 4tb Rocket Q4 NVME M.2 drive (system 1)
    Samsung,980 PRO 2TB NVME M.2 drive (system 2)


    On-board Intel graphics (both systems)

    Win 11 pro (both systems)

    Both systems running latest BIOS 1403

    Intended purpose of both systems is real-time audio processing (DAW application)


    No overclocking other than memory XMP Have disabled the following MB CPU features:


    Turbo Mode
    Turbo Boost
    Speed Stepping

    Disabled the following WIN 11 features:
    Changed power management such that the system never goes to sleep, never suspends, never turns off display,


    Using Latency Monitor software I notice that there are some very high Interrupt to process times (in excess of 20000 uS)
    which will render the system useless for real-time audio processing. The spikes occur within 10 first minutes of starting the system. After 10 minutes or so of running the system will stay relatively stable with low interrupt to service execution times however, these spikes still occur albeit not very often after the initial 10 minutes of running.


    I'm hoping for a new BIOS release which may help this problem. When is the next BIOS release due? Anybody else have any suggestions as to how to eliminate the high Interrupt to service execution time spikes?
    Hello,

    Have you tried without XMP? Troubleshooting 101 is to remove any overclocking. XMP very much falls into this category.

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