델 G3 3579의 DPC 레이턴시가 높게 나옵니다.

약 1주일 전에 구매한 Dell G3 3579 D205KR에 간헐적으로 오디오가 끊기고 스파크같은 소리가 나는 현상이 나타나서 LatencyMon이라는 프로그램을 통해 DPC 레이턴시를 확인해 보았는데, ACPI.SYS라는 드라이버가 지속적으로 DPC 레이턴시를 유발 (최대 약 2.7ms)하고 있었습니다. 추가적으로, 윈도우 10과 Dell 웹사이트에서 제공한 최신 드라이버와 BIOS 업데이트가 설치되어 있고, SupportAssist 프로그램에서는 제 노트북에 이상이 없다고 보고했습니다. 아래는 LatencyMon 결과입니다: _________________________________________________________________________________________________________ CONCLUSION _________________________________________________________________________________________________________ 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. One or more DPC routines that belong to a driver running in your system appear to be executing for too long. One problem may be related to power management, disable CPU throttling settings in Control Panel and BIOS setup. Check for BIOS updates. LatencyMon has been analyzing your system for 0:03:16 (h:mm:ss) on all processors. _________________________________________________________________________________________________________ SYSTEM INFORMATION _________________________________________________________________________________________________________ Computer name: DESKTOP-C4BAEJK OS version: Windows 10 , 10.0, build: 17763 (x64) Hardware: G3 3579, Dell Inc., 00FK8Y CPU: GenuineIntel Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz Logical processors: 12 Processor groups: 1 RAM: 32627 MB total _________________________________________________________________________________________________________ CPU SPEED _________________________________________________________________________________________________________ Reported CPU speed: 2208 MHz Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results. WARNING: the CPU speed that was measured is only a fraction of the CPU speed reported. Your CPUs may be throttled back due to variable speed settings and thermal issues. It is suggested that you run a utility which reports your actual CPU frequency and temperature. _________________________________________________________________________________________________________ MEASURED INTERRUPT TO USER PROCESS LATENCIES _________________________________________________________________________________________________________ The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event. Highest measured interrupt to process latency (µs): 2805.10 Average measured interrupt to process latency (µs): 4.118592 Highest measured interrupt to DPC latency (µs): 2803.40 Average measured interrupt to DPC latency (µs): 2.077538 _________________________________________________________________________________________________________ REPORTED ISRs _________________________________________________________________________________________________________ Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal. Highest ISR routine execution time (µs): 296.943841 Driver with highest ISR routine execution time: Wdf01000.sys - 커널 모드 드라이버 프레임워크 런타임, Microsoft Corporation Highest reported total ISR routine time (%): 0.002354 Driver with highest ISR total time: Wdf01000.sys - 커널 모드 드라이버 프레임워크 런타임, Microsoft Corporation Total time spent in ISRs (%) 0.004541 ISR count (execution time <250 µs): 7959 ISR count (execution time 250-500 µs): 0 ISR count (execution time 500-999 µs): 1 ISR count (execution time 1000-1999 µs): 0 ISR count (execution time 2000-3999 µs): 0 ISR count (execution time >=4000 µs): 0 _________________________________________________________________________________________________________ REPORTED DPCs _________________________________________________________________________________________________________ DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution. Highest DPC routine execution time (µs): 2775.621377 Driver with highest DPC routine execution time: ACPI.sys - NT용 ACPI 드라이버, Microsoft Corporation Highest reported total DPC routine time (%): 0.013841 Driver with highest DPC total execution time: Wdf01000.sys - 커널 모드 드라이버 프레임워크 런타임, Microsoft Corporation Total time spent in DPCs (%) 0.037608 DPC count (execution time <250 µs): 535742 DPC count (execution time 250-500 µs): 0 DPC count (execution time 500-999 µs): 36 DPC count (execution time 1000-1999 µs): 5 DPC count (execution time 2000-3999 µs): 2 DPC count (execution time >=4000 µs): 0 _________________________________________________________________________________________________________ REPORTED HARD PAGEFAULTS _________________________________________________________________________________________________________ Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires reading in the memory from disk while the process is interrupted and blocked from execution. NOTE: 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. Check the Processes tab to see which programs were hit. Process with highest pagefault count: shellexperiencehost.exe Total number of hard pagefaults 1257 Hard pagefault count of hardest hit process: 414 Number of processes hit: 24 _________________________________________________________________________________________________________ PER CPU DATA _________________________________________________________________________________________________________ CPU 0 Interrupt cycle time (s): 3.128922 CPU 0 ISR highest execution time (µs): 296.943841 CPU 0 ISR total execution time (s): 0.10680 CPU 0 ISR count: 7960 CPU 0 DPC highest execution time (µs): 2775.621377 CPU 0 DPC total execution time (s): 0.840042 CPU 0 DPC count: 523589 _________________________________________________________________________________________________________ CPU 1 Interrupt cycle time (s): 0.737411 CPU 1 ISR highest execution time (µs): 0.0 CPU 1 ISR total execution time (s): 0.0 CPU 1 ISR count: 0 CPU 1 DPC highest execution time (µs): 26.163949 CPU 1 DPC total execution time (s): 0.005481 CPU 1 DPC count: 3967 _________________________________________________________________________________________________________ CPU 2 Interrupt cycle time (s): 1.028767 CPU 2 ISR highest execution time (µs): 0.0 CPU 2 ISR total execution time (s): 0.0 CPU 2 ISR count: 0 CPU 2 DPC highest execution time (µs): 43.411232 CPU 2 DPC total execution time (s): 0.024770 CPU 2 DPC count: 2656 _________________________________________________________________________________________________________ CPU 3 Interrupt cycle time (s): 0.777448 CPU 3 ISR highest execution time (µs): 0.0 CPU 3 ISR total execution time (s): 0.0 CPU 3 ISR count: 0 CPU 3 DPC highest execution time (µs): 27.873188 CPU 3 DPC total execution time (s): 0.002386 CPU 3 DPC count: 1268 _________________________________________________________________________________________________________ CPU 4 Interrupt cycle time (s): 0.817737 CPU 4 ISR highest execution time (µs): 0.0 CPU 4 ISR total execution time (s): 0.0 CPU 4 ISR count: 0 CPU 4 DPC highest execution time (µs): 30.345109 CPU 4 DPC total execution time (s): 0.002155 CPU 4 DPC count: 701 _________________________________________________________________________________________________________ CPU 5 Interrupt cycle time (s): 0.770991 CPU 5 ISR highest execution time (µs): 0.0 CPU 5 ISR total execution time (s): 0.0 CPU 5 ISR count: 0 CPU 5 DPC highest execution time (µs): 7.500906 CPU 5 DPC total execution time (s): 0.000451 CPU 5 DPC count: 202 _________________________________________________________________________________________________________ CPU 6 Interrupt cycle time (s): 0.808809 CPU 6 ISR highest execution time (µs): 0.0 CPU 6 ISR total execution time (s): 0.0 CPU 6 ISR count: 0 CPU 6 DPC highest execution time (µs): 27.836051 CPU 6 DPC total execution time (s): 0.000724 CPU 6 DPC count: 304 _________________________________________________________________________________________________________ CPU 7 Interrupt cycle time (s): 0.824012 CPU 7 ISR highest execution time (µs): 0.0 CPU 7 ISR total execution time (s): 0.0 CPU 7 ISR count: 0 CPU 7 DPC highest execution time (µs): 38.663043 CPU 7 DPC total execution time (s): 0.002054 CPU 7 DPC count: 582 _________________________________________________________________________________________________________ CPU 8 Interrupt cycle time (s): 0.662177 CPU 8 ISR highest execution time (µs): 0.0 CPU 8 ISR total execution time (s): 0.0 CPU 8 ISR count: 0 CPU 8 DPC highest execution time (µs): 24.115036 CPU 8 DPC total execution time (s): 0.000875 CPU 8 DPC count: 394 _________________________________________________________________________________________________________ CPU 9 Interrupt cycle time (s): 0.759155 CPU 9 ISR highest execution time (µs): 0.0 CPU 9 ISR total execution time (s): 0.0 CPU 9 ISR count: 0 CPU 9 DPC highest execution time (µs): 25.643116 CPU 9 DPC total execution time (s): 0.000692 CPU 9 DPC count: 342 _________________________________________________________________________________________________________ CPU 10 Interrupt cycle time (s): 0.687720 CPU 10 ISR highest execution time (µs): 0.0 CPU 10 ISR total execution time (s): 0.0 CPU 10 ISR count: 0 CPU 10 DPC highest execution time (µs): 39.277174 CPU 10 DPC total execution time (s): 0.003758 CPU 10 DPC count: 1358 _________________________________________________________________________________________________________ CPU 11 Interrupt cycle time (s): 0.720852 CPU 11 ISR highest execution time (µs): 0.0 CPU 11 ISR total execution time (s): 0.0 CPU 11 ISR count: 0 CPU 11 DPC highest execution time (µs): 20.430254 CPU 11 DPC total execution time (s): 0.001143 CPU 11 DPC count: 422 _________________________________________________________________________________________________________ + Thesycon의 DPC Latency Checker에서는 DPC 레이턴시가 항상 998마이크로초 이상을 유지하고 있었습니다. 추가적으로, XPS 15 9570에서도 비슷한 DPC 레이턴시 현상이 발견되어 얼마 전에 업데이트된 사운드 드라이버를 배포했고, BIOS 업데이트를 제공한다고 했는데, Dell G3은 따로 업데이트나 해결 방법이 없는건가요?