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- 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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