MEASURED INTERRUPT TO USER PROCESS LATENCIES
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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): 161,70
Average measured interrupt to process latency (µs): 3,260220
Highest measured interrupt to DPC latency (µs): 159,60
Average measured interrupt to DPC latency (µs): 1,178363
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REPORTED ISRs
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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): 187,711667
Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
Highest reported total ISR routine time (%): 0,006348
Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
Total time spent in ISRs (%) 0,006482
ISR count (execution time <250 µs): 3984
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
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REPORTED DPCs
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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): 245,964167
Driver with highest DPC routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
Highest reported total DPC routine time (%): 0,016564
Driver with highest DPC total execution time: storport.sys - Microsoft Storage Port Driver, Microsoft Corporation
Total time spent in DPCs (%) 0,041620
DPC count (execution time <250 µs): 343825
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 0
DPC count (execution time 1000-1999 µs): 0
DPC count (execution time 2000-3999 µs): 0
DPC count (execution time >=4000 µs): 0
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REPORTED HARD PAGEFAULTS
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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: hub.exe
Total number of hard pagefaults 45976
Hard pagefault count of hardest hit process: 41168
Number of processes hit: 42
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PER CPU DATA
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CPU 0 Interrupt cycle time (s): 2,558460
CPU 0 ISR highest execution time (µs): 187,711667
CPU 0 ISR total execution time (s): 0,097381
CPU 0 ISR count: 3813
CPU 0 DPC highest execution time (µs): 245,964167
CPU 0 DPC total execution time (s): 0,387416
CPU 0 DPC count: 289861
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CPU 1 Interrupt cycle time (s): 0,672906
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): 62,084167
CPU 1 DPC total execution time (s): 0,015902
CPU 1 DPC count: 2604
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CPU 2 Interrupt cycle time (s): 0,785216
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): 74,08750
CPU 2 DPC total execution time (s): 0,051569
CPU 2 DPC count: 11962
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CPU 3 Interrupt cycle time (s): 0,693939
CPU 3 ISR highest execution time (µs): 1,264167
CPU 3 ISR total execution time (s): 0,000087
CPU 3 ISR count: 144
CPU 3 DPC highest execution time (µs): 71,37750
CPU 3 DPC total execution time (s): 0,007825
CPU 3 DPC count: 1650
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CPU 4 Interrupt cycle time (s): 0,765775
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): 67,504167
CPU 4 DPC total execution time (s): 0,051825
CPU 4 DPC count: 12569
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CPU 5 Interrupt cycle time (s): 0,728147
CPU 5 ISR highest execution time (µs): 1,264167
CPU 5 ISR total execution time (s): 0,000023
CPU 5 ISR count: 27
CPU 5 DPC highest execution time (µs): 78,065833
CPU 5 DPC total execution time (s): 0,008857
CPU 5 DPC count: 1945
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CPU 6 Interrupt cycle time (s): 0,770178
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): 72,0050
CPU 6 DPC total execution time (s): 0,040451
CPU 6 DPC count: 9008
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CPU 7 Interrupt cycle time (s): 0,782986
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): 72,805833
CPU 7 DPC total execution time (s): 0,062114
CPU 7 DPC count: 14226