DPC LatencyMon report sevenforums
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CONCLUSION
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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 executed by a driver running in your system appear to be executing for too long. Also one or more ISR routines executed by a driver running in your system appear to be executing for too long. At least one detected problem appears to be network related. In case you are using a WLAN adapter, try disabling it to get better results. 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 8:09:24 (h:mm:ss) on all processors in the system.
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SYSTEM INFORMATION
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Computer name: WINDOWS7-PC
OS version: Windows 7 , 6.1, build: 7600 (x64)
CPU: GenuineIntel Intel(R) Core(TM) i7 CPU 930 @ 2.80GHz
Logical processors: 8
Processor groups: 1
RAM: 4094 MB total
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CPU SPEED
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Reported CPU speed: 2833.0 MHz
Measured CPU speed: 2920.0 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): 28861.362185
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MEASURED SMIs AND CPU STALLS
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Highest measured SMI, IPI or CPU stall (µs) 8.672610
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REPORTED DPCs
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Highest DPC routine execution time (µs): 2470.152136
Driver with highest DPC routine execution time: ndis.sys - NDIS 6.20 driver, Microsoft Corporation
Highest reported total DPC routine time (%): 0.124103
Driver with highest DPC total execution time: rspLLL64.sys - Resplendence Latency Monitoring and Auxiliary Kernel Library, Resplendence Software Projects Sp.
Total time spent in DPCs (%) 0.206885
DPC count (execution time <250 µs): 89595542
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 13017
DPC count (execution time 1000-1999 µs): 1
DPC count (execution time 2000-3999 µs): 3011
DPC count (execution time >=4000 µs): 0
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REPORTED ISRs
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Highest ISR routine execution time (µs): 2005.600071
Driver with highest ISR routine execution time: ataport.SYS - ATAPI Driver Extension, Microsoft Corporation
Highest reported total ISR routine time (%): 0.042179
Driver with highest ISR total time: ataport.SYS - ATAPI Driver Extension, Microsoft Corporation
Total time spent in ISRs (%) 0.060827
ISR count (execution time <250 µs): 55467071
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 0
ISR count (execution time 1000-1999 µs): 13
ISR count (execution time 2000-3999 µs): 3
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 2481
Hard pagefault count of hardest hit process: 763
Highest hard pagefault resolution time (µs): 656950.867631
Total time spent in hard pagefaults (%): 0.012366
Number of processes hit: 0
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PER CPU DATA
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CPU 0 Interrupt cycle time (s): 681.452418
CPU 0 ISR highest execution time (µs): 56.494882
CPU 0 ISR total execution time (s): 9.859333
CPU 0 ISR count: 29343036
CPU 0 DPC highest execution time (µs): 2470.152136
CPU 0 DPC total execution time (s): 425.290245
CPU 0 DPC count: 63390033
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CPU 1 Interrupt cycle time (s): 168.336981
CPU 1 ISR highest execution time (µs): 1975.245323
CPU 1 ISR total execution time (s): 10.690441
CPU 1 ISR count: 2931483
CPU 1 DPC highest execution time (µs): 545.635722
CPU 1 DPC total execution time (s): 5.267645
CPU 1 DPC count: 4919105
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CPU 2 Interrupt cycle time (s): 28.606321
CPU 2 ISR highest execution time (µs): 61.022944
CPU 2 ISR total execution time (s): 0.384444
CPU 2 ISR count: 85898
CPU 2 DPC highest execution time (µs): 408.083657
CPU 2 DPC total execution time (s): 3.149119
CPU 2 DPC count: 2147553
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CPU 3 Interrupt cycle time (s): 36.667749
CPU 3 ISR highest execution time (µs): 1970.741617
CPU 3 ISR total execution time (s): 0.869237
CPU 3 ISR count: 184486
CPU 3 DPC highest execution time (µs): 577.289799
CPU 3 DPC total execution time (s): 2.975151
CPU 3 DPC count: 2159091
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CPU 4 Interrupt cycle time (s): 49.591812
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): 561.525238
CPU 4 DPC total execution time (s): 2.919851
CPU 4 DPC count: 2074502
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CPU 5 Interrupt cycle time (s): 153.664737
CPU 5 ISR highest execution time (µs): 2005.600071
CPU 5 ISR total execution time (s): 96.075247
CPU 5 ISR count: 19022873
CPU 5 DPC highest execution time (µs): 2032.181786
CPU 5 DPC total execution time (s): 17.810133
CPU 5 DPC count: 7979703
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CPU 6 Interrupt cycle time (s): 29.417018
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): 527.711966
CPU 6 DPC total execution time (s): 5.592745
CPU 6 DPC count: 2865142
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CPU 7 Interrupt cycle time (s): 86.630607
CPU 7 ISR highest execution time (µs): 1997.636781
CPU 7 ISR total execution time (s): 25.013577
CPU 7 ISR count: 3899311
CPU 7 DPC highest execution time (µs): 1998.786798
CPU 7 DPC total execution time (s): 23.003391
CPU 7 DPC count: 4076442
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