use
LatencyMon to find the offending driver causing the latecy.
Hi, how to interpret the results?
_
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 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 0:00:54 (h🇲🇲ss) on all processors.
_
SYSTEM INFORMATION
_
Computer name: UMAIR-PC
OS version: Windows 10 , 10.0, version 1903, build: 18362 (x64)
Hardware: B150M-D3H, Gigabyte Technology Co., Ltd., B150M-D3H-CF
CPU: GenuineIntel Intel(R) Core(TM) i5-6600 CPU @ 3.30GHz
Logical processors: 4
Processor groups: 1
RAM: 16331 MB total
_
CPU SPEED
_
Reported CPU speed: 3312 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): 6197.0
Average measured interrupt to process latency (µs): 7.381432
Highest measured interrupt to DPC latency (µs): 6192.70
Average measured interrupt to DPC latency (µs): 3.387668
_
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): 150.211957
Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
Highest reported total ISR routine time (%): 0.248344
Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
Total time spent in ISRs (%) 0.295731
ISR count (execution time <250 µs): 158205
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 0
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): 752.503623
Driver with highest DPC routine execution time: ndis.sys - Network Driver Interface Specification (NDIS), Microsoft Corporation
Highest reported total DPC routine time (%): 1.037882
Driver with highest DPC total execution time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation
Total time spent in DPCs (%) 1.506636
DPC count (execution time <250 µs): 371403
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 24
DPC count (execution time 1000-1999 µs): 0
DPC count (execution time 2000-3999 µs): 0
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: biglybt.exe
Total number of hard pagefaults 1449
Hard pagefault count of hardest hit process: 1427
Number of processes hit: 4
_
PER CPU DATA
_
CPU 0 Interrupt cycle time (s): 4.443798
CPU 0 ISR highest execution time (µs): 78.292271
CPU 0 ISR total execution time (s): 0.117606
CPU 0 ISR count: 125338
CPU 0 DPC highest execution time (µs): 752.503623
CPU 0 DPC total execution time (s): 2.792762
CPU 0 DPC count: 296114
_
CPU 1 Interrupt cycle time (s): 3.075396
CPU 1 ISR highest execution time (µs): 150.211957
CPU 1 ISR total execution time (s): 0.521352
CPU 1 ISR count: 32867
CPU 1 DPC highest execution time (µs): 268.902174
CPU 1 DPC total execution time (s): 0.436202
CPU 1 DPC count: 71095
_
CPU 2 Interrupt cycle time (s): 1.063121
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): 98.028382
CPU 2 DPC total execution time (s): 0.011566
CPU 2 DPC count: 1915
_
CPU 3 Interrupt cycle time (s): 1.225150
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): 150.797101
CPU 3 DPC total execution time (s): 0.014708
CPU 3 DPC count: 2303
_