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): 1180,497029
Driver with highest ISR routine execution time: USBPORT.SYS - USB 1.1 & 2.0 Port Driver, Microsoft Corporation
Highest reported total ISR routine time (%): 0,043292
Driver with highest ISR total time: ataport.SYS - ATAPI Driver Extension, Microsoft Corporation
Total time spent in ISRs (%) 0,108483
ISR count (execution time <250 µs): 277835
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 13
ISR count (execution time 1000-1999 µs): 3
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): 849,157212
Driver with highest DPC routine execution time: ndis.sys - NDIS 6.20 driver, Microsoft Corporation
Highest reported total DPC routine time (%): 0,082788
Driver with highest DPC total execution time: USBPORT.SYS - USB 1.1 & 2.0 Port Driver, Microsoft Corporation
Total time spent in DPCs (%) 0,178233
DPC count (execution time <250 µs): 1058300
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 21
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: svchost.exe
Total number of hard pagefaults 1778
Hard pagefault count of hardest hit process: 1594
Highest hard pagefault resolution time (µs): 124703,670178
Total time spent in hard pagefaults (%): 0,241093
Number of processes hit: 11