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Feb 23rd, 2016
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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 0:56:29 (h:mm:ss) on all processors.
  6.  
  7.  
  8. _________________________________________________________________________________________________________
  9. SYSTEM INFORMATION
  10. _________________________________________________________________________________________________________
  11. Computer name: USER-PC
  12. OS version: Windows 7 Service Pack 1, 6.1, build: 7601 (x64)
  13. Hardware: Gigabyte Technology Co., Ltd., B75M-HD3
  14. CPU: GenuineIntel Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz
  15. Logical processors: 4
  16. Processor groups: 1
  17. RAM: 8132 MB total
  18.  
  19.  
  20. _________________________________________________________________________________________________________
  21. CPU SPEED
  22. _________________________________________________________________________________________________________
  23. Reported CPU speed: 3192 MHz
  24. Measured CPU speed: 1 MHz (approx.)
  25.  
  26. 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.
  27.  
  28. WARNING: the CPU speed that was measured is only a fraction of the CPU speed reported. Your CPUs may be throttled back due to variable speed settings and thermal issues. It is suggested that you run a utility which reports your actual CPU frequency and temperature.
  29.  
  30.  
  31.  
  32. _________________________________________________________________________________________________________
  33. MEASURED INTERRUPT TO USER PROCESS LATENCIES
  34. _________________________________________________________________________________________________________
  35. 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.
  36.  
  37. Highest measured interrupt to process latency (µs): 10298.694534
  38. Average measured interrupt to process latency (µs): 2.060256
  39.  
  40. Highest measured interrupt to DPC latency (µs): 7590.199771
  41. Average measured interrupt to DPC latency (µs): 0.798248
  42.  
  43.  
  44. _________________________________________________________________________________________________________
  45. REPORTED ISRs
  46. _________________________________________________________________________________________________________
  47. Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.
  48.  
  49. Highest ISR routine execution time (µs): 4511.447368
  50. Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
  51.  
  52. Highest reported total ISR routine time (%): 0.192807
  53. Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
  54.  
  55. Total time spent in ISRs (%) 0.291104
  56.  
  57. ISR count (execution time <250 µs): 7188417
  58. ISR count (execution time 250-500 µs): 0
  59. ISR count (execution time 500-999 µs): 1724
  60. ISR count (execution time 1000-1999 µs): 13
  61. ISR count (execution time 2000-3999 µs): 124
  62. ISR count (execution time >=4000 µs): 0
  63.  
  64.  
  65. _________________________________________________________________________________________________________
  66. REPORTED DPCs
  67. _________________________________________________________________________________________________________
  68. 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.
  69.  
  70. Highest DPC routine execution time (µs): 7622.648810
  71. Driver with highest DPC routine execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 361.91 , NVIDIA Corporation
  72.  
  73. Highest reported total DPC routine time (%): 0.149903
  74. Driver with highest DPC total execution time: ataport.SYS - ATAPI Driver Extension, Microsoft Corporation
  75.  
  76. Total time spent in DPCs (%) 0.385899
  77.  
  78. DPC count (execution time <250 µs): 21865418
  79. DPC count (execution time 250-500 µs): 0
  80. DPC count (execution time 500-999 µs): 2084
  81. DPC count (execution time 1000-1999 µs): 7
  82. DPC count (execution time 2000-3999 µs): 65
  83. DPC count (execution time >=4000 µs): 0
  84.  
  85.  
  86. _________________________________________________________________________________________________________
  87. REPORTED HARD PAGEFAULTS
  88. _________________________________________________________________________________________________________
  89. 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.
  90.  
  91. 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.
  92.  
  93. Process with highest pagefault count: chrome.exe
  94.  
  95. Total number of hard pagefaults 8741
  96. Hard pagefault count of hardest hit process: 2365
  97. Highest hard pagefault resolution time (µs): 131142.641917
  98. Total time spent in hard pagefaults (%): 0.240529
  99. Number of processes hit: 25
  100.  
  101.  
  102. _________________________________________________________________________________________________________
  103. PER CPU DATA
  104. _________________________________________________________________________________________________________
  105. CPU 0 Interrupt cycle time (s): 214.984738
  106. CPU 0 ISR highest execution time (µs): 4511.447368
  107. CPU 0 ISR total execution time (s): 39.472378
  108. CPU 0 ISR count: 7190280
  109. CPU 0 DPC highest execution time (µs): 7622.648810
  110. CPU 0 DPC total execution time (s): 46.145852
  111. CPU 0 DPC count: 21019776
  112. _________________________________________________________________________________________________________
  113. CPU 1 Interrupt cycle time (s): 92.947848
  114. CPU 1 ISR highest execution time (µs): 0.0
  115. CPU 1 ISR total execution time (s): 0.0
  116. CPU 1 ISR count: 0
  117. CPU 1 DPC highest execution time (µs): 258.688910
  118. CPU 1 DPC total execution time (s): 2.956334
  119. CPU 1 DPC count: 305434
  120. _________________________________________________________________________________________________________
  121. CPU 2 Interrupt cycle time (s): 78.620630
  122. CPU 2 ISR highest execution time (µs): 0.0
  123. CPU 2 ISR total execution time (s): 0.0
  124. CPU 2 ISR count: 0
  125. CPU 2 DPC highest execution time (µs): 354.878759
  126. CPU 2 DPC total execution time (s): 1.901999
  127. CPU 2 DPC count: 276934
  128. _________________________________________________________________________________________________________
  129. CPU 3 Interrupt cycle time (s): 35.331684
  130. CPU 3 ISR highest execution time (µs): 0.0
  131. CPU 3 ISR total execution time (s): 0.0
  132. CPU 3 ISR count: 0
  133. CPU 3 DPC highest execution time (µs): 2094.007519
  134. CPU 3 DPC total execution time (s): 1.321898
  135. CPU 3 DPC count: 265437
  136. _________________________________________________________________________________________________________
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