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  1. _________________________________________________________________________________________________________
  2. CONCLUSION
  3. _________________________________________________________________________________________________________
  4. 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 that belong to a driver running in your system appear to be executing for too long. Also one or more ISR 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.
  5. LatencyMon has been analyzing your system for  0:03:26  (h:mm:ss) on all processors.
  6.  
  7.  
  8. _________________________________________________________________________________________________________
  9. SYSTEM INFORMATION
  10. _________________________________________________________________________________________________________
  11. Computer name:                                        CHRIS-PC
  12. OS version:                                           Windows 7 , 6.1, build: 7600 (x64)
  13. Hardware:                                             OptiPlex 755                 , Dell Inc., 0PU052
  14. CPU:                                                  GenuineIntel Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz
  15. Logical processors:                                   2
  16. Processor groups:                                     1
  17. RAM:                                                  6013 MB total
  18.  
  19.  
  20. _________________________________________________________________________________________________________
  21. CPU SPEED
  22. _________________________________________________________________________________________________________
  23. Reported CPU speed:                                   2327 MHz
  24.  
  25. 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.
  26.  
  27.  
  28. _________________________________________________________________________________________________________
  29. MEASURED INTERRUPT TO USER PROCESS LATENCIES
  30. _________________________________________________________________________________________________________
  31. 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.
  32.  
  33. Highest measured interrupt to process latency (µs):   45052.044723
  34. Average measured interrupt to process latency (µs):   7.084913
  35.  
  36. Highest measured interrupt to DPC latency (µs):       44883.101205
  37. Average measured interrupt to DPC latency (µs):       3.715619
  38.  
  39.  
  40. _________________________________________________________________________________________________________
  41.  REPORTED ISRs
  42. _________________________________________________________________________________________________________
  43. Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.
  44.  
  45. Highest ISR routine execution time (µs):              53481.850021
  46. Driver with highest ISR routine execution time:       dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
  47.  
  48. Highest reported total ISR routine time (%):          2.924312
  49. Driver with highest ISR total time:                   dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
  50.  
  51. Total time spent in ISRs (%)                          4.877992
  52.  
  53. ISR count (execution time <250 µs):                   612002
  54. ISR count (execution time 250-500 µs):                0
  55. ISR count (execution time 500-999 µs):                409
  56. ISR count (execution time 1000-1999 µs):              228
  57. ISR count (execution time 2000-3999 µs):              197
  58. ISR count (execution time >=4000 µs):                 0
  59.  
  60.  
  61. _________________________________________________________________________________________________________
  62. REPORTED DPCs
  63. _________________________________________________________________________________________________________
  64. 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.
  65.  
  66. Highest DPC routine execution time (µs):              48591.003868
  67. Driver with highest DPC routine execution time:       nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 378.66 , NVIDIA Corporation
  68.  
  69. Highest reported total DPC routine time (%):          0.754510
  70. Driver with highest DPC total execution time:         USBPORT.SYS - USB 1.1 & 2.0 Port Driver, Microsoft Corporation
  71.  
  72. Total time spent in DPCs (%)                          1.925247
  73.  
  74. DPC count (execution time <250 µs):                   892858
  75. DPC count (execution time 250-500 µs):                0
  76. DPC count (execution time 500-999 µs):                222
  77. DPC count (execution time 1000-1999 µs):              126
  78. DPC count (execution time 2000-3999 µs):              48
  79. DPC count (execution time >=4000 µs):                 0
  80.  
  81.  
  82. _________________________________________________________________________________________________________
  83.  REPORTED HARD PAGEFAULTS
  84. _________________________________________________________________________________________________________
  85. 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.
  86.  
  87. 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.
  88.  
  89. Process with highest pagefault count:                 explorer.exe
  90.  
  91. Total number of hard pagefaults                       2160
  92. Hard pagefault count of hardest hit process:          970
  93. Highest hard pagefault resolution time (µs):          601241.113451
  94. Total time spent in hard pagefaults (%):              10.992440
  95. Number of processes hit:                              10
  96.  
  97.  
  98. _________________________________________________________________________________________________________
  99.  PER CPU DATA
  100. _________________________________________________________________________________________________________
  101. CPU 0 Interrupt cycle time (s):                       14.888643
  102. CPU 0 ISR highest execution time (µs):                53414.373872
  103. CPU 0 ISR total execution time (s):                   10.059091
  104. CPU 0 ISR count:                                      345462
  105. CPU 0 DPC highest execution time (µs):                47830.205844
  106. CPU 0 DPC total execution time (s):                   4.397140
  107. CPU 0 DPC count:                                      623476
  108. _________________________________________________________________________________________________________
  109. CPU 1 Interrupt cycle time (s):                       13.793221
  110. CPU 1 ISR highest execution time (µs):                53481.850021
  111. CPU 1 ISR total execution time (s):                   10.092967
  112. CPU 1 ISR count:                                      268553
  113. CPU 1 DPC highest execution time (µs):                48591.003868
  114. CPU 1 DPC total execution time (s):                   3.556479
  115. CPU 1 DPC count:                                      270011
  116. _________________________________________________________________________________________________________
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