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CONCLUSION
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Your system seems to have difficulty handling real-time audio and other tasks. You may experience drop outs, clicks or pops due to buffer underruns. 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 0:37:32 (h:mm:ss) on all processors in the system.
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SYSTEM INFORMATION
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Computer name: DAW
OS version: Windows 7 Service Pack 1, 6.1, build: 7601 (x64)
CPU: GenuineIntel Intel(R) Core(TM) i7 CPU 930 @ 2.80GHz
Logical processors: 8
Processor groups: 1
RAM: 24574 MB total
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CPU SPEED
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Reported CPU speed: 2833,0 MHz
Measured CPU speed: 3304,0 MHz (approx.)
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.
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MEASURED KERNEL TIMER LATENCIES
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Highest measured kernel timer latency (µs): 133,342295
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MEASURED SMIs AND CPU STALLS
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Highest measured SMI, IPI or CPU stall (µs) 0,361361
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REPORTED DPCs
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Highest DPC routine execution time (µs): 1665,658666
Driver with highest DPC routine execution time: ataport.SYS - ATAPI Driver Extension, Microsoft Corporation
Highest reported total DPC routine time (%): 0,096798
Driver with highest DPC total execution time: USBPORT.SYS - USB 1.1 & 2.0-Porttreiber, Microsoft Corporation
Total time spent in DPCs (%) 0,152534
DPC count (execution time DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 0
DPC count (execution time 1000-1999 µs): 1
DPC count (execution time 2000-3999 µs): 0
DPC count (execution time >=4000 µs): 0
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REPORTED ISRs
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Highest ISR routine execution time (µs): 23,566890
Driver with highest ISR routine execution time: SCSIPORT.SYS - SCSI Port Driver, Microsoft Corporation
Highest reported total ISR routine time (%): 0,039499
Driver with highest ISR total time: SCSIPORT.SYS - SCSI Port Driver, Microsoft Corporation
Total time spent in ISRs (%) 0,087235
ISR count (execution time 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 HARD PAGEFAULTS
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Process with highest pagefault count: none
Total number of hard pagefaults 206
Hard pagefault count of hardest hit process: 135
Highest hard pagefault resolution time (µs): 131299,34910
Total time spent in hard pagefaults (%): 0,013644
Number of processes hit: 0
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PER CPU DATA
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CPU 0 Interrupt cycle time (s): 14,841548
CPU 0 ISR highest execution time (µs): 3,466996
CPU 0 ISR total execution time (s): 0,591773
CPU 0 ISR count: 2246191
CPU 0 DPC highest execution time (µs): 1665,658666
CPU 0 DPC total execution time (s): 8,355688
CPU 0 DPC count: 4515101
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CPU 1 Interrupt cycle time (s): 1,087689
CPU 1 ISR highest execution time (µs): 17,167667
CPU 1 ISR total execution time (s): 0,011516
CPU 1 ISR count: 2029
CPU 1 DPC highest execution time (µs): 16,885987
CPU 1 DPC total execution time (s): 0,014265
CPU 1 DPC count: 6924
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CPU 2 Interrupt cycle time (s): 1,900982
CPU 2 ISR highest execution time (µs): 9,985881
CPU 2 ISR total execution time (s): 0,024647
CPU 2 ISR count: 6597
CPU 2 DPC highest execution time (µs): 22,512178
CPU 2 DPC total execution time (s): 0,622640
CPU 2 DPC count: 201830
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CPU 3 Interrupt cycle time (s): 22,843539
CPU 3 ISR highest execution time (µs): 20,570067
CPU 3 ISR total execution time (s): 5,851592
CPU 3 ISR count: 2184955
CPU 3 DPC highest execution time (µs): 56,957642
CPU 3 DPC total execution time (s): 14,602464
CPU 3 DPC count: 3944170
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CPU 4 Interrupt cycle time (s): 2,014673
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): 20,563713
CPU 4 DPC total execution time (s): 0,707911
CPU 4 DPC count: 206794
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CPU 5 Interrupt cycle time (s): 11,416865
CPU 5 ISR highest execution time (µs): 23,566890
CPU 5 ISR total execution time (s): 9,189055
CPU 5 ISR count: 990161
CPU 5 DPC highest execution time (µs): 50,610307
CPU 5 DPC total execution time (s): 1,119815
CPU 5 DPC count: 481318
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CPU 6 Interrupt cycle time (s): 3,247054
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): 18,376986
CPU 6 DPC total execution time (s): 2,035062
CPU 6 DPC count: 543080
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CPU 7 Interrupt cycle time (s): 0,394331
CPU 7 ISR highest execution time (µs): 18,044476
CPU 7 ISR total execution time (s): 0,048807
CPU 7 ISR count: 24285
CPU 7 DPC highest execution time (µs): 40,528062
CPU 7 DPC total execution time (s): 0,024783
CPU 7 DPC count: 14247
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