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Latency Monitor Report: Audio Issues (Spikes, Crackles)

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Feb 24th, 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. 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.
  5. LatencyMon has been analyzing your system for 0:24:04 (h:mm:ss) on all processors.
  6.  
  7.  
  8. _________________________________________________________________________________________________________
  9. SYSTEM INFORMATION
  10. _________________________________________________________________________________________________________
  11. Computer name: SAM-PC
  12. OS version: Windows 8.1 , 6.2, build: 9200 (x64)
  13. Hardware: Satellite A665D, TOSHIBA, NWQAE
  14. CPU: AuthenticAMD AMD Phenom(tm) II P920 Quad-Core Processor
  15. Logical processors: 4
  16. Processor groups: 1
  17. RAM: 7931 MB total
  18.  
  19.  
  20. _________________________________________________________________________________________________________
  21. CPU SPEED
  22. _________________________________________________________________________________________________________
  23. Reported CPU speed: 1596 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): 6341.790765
  34. Average measured interrupt to process latency (µs): 23.141934
  35.  
  36. Highest measured interrupt to DPC latency (µs): 6302.014232
  37. Average measured interrupt to DPC latency (µs): 4.386057
  38.  
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  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): 308.305764
  46. Driver with highest ISR routine execution time: i8042prt.sys - i8042 Port Driver, Microsoft Corporation
  47.  
  48. Highest reported total ISR routine time (%): 0.221945
  49. Driver with highest ISR total time: i8042prt.sys - i8042 Port Driver, Microsoft Corporation
  50.  
  51. Total time spent in ISRs (%) 0.284877
  52.  
  53. ISR count (execution time <250 µs): 732874
  54. ISR count (execution time 250-500 µs): 0
  55. ISR count (execution time 500-999 µs): 1
  56. ISR count (execution time 1000-1999 µs): 0
  57. ISR count (execution time 2000-3999 µs): 0
  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): 1547.216792
  67. Driver with highest DPC routine execution time: ACPI.sys - ACPI Driver for NT, Microsoft Corporation
  68.  
  69. Highest reported total DPC routine time (%): 0.531288
  70. Driver with highest DPC total execution time: rspLLL64.sys - Resplendence Latency Monitoring and Auxiliary Kernel Library, Resplendence Software Projects Sp.
  71.  
  72. Total time spent in DPCs (%) 0.7990
  73.  
  74. DPC count (execution time <250 µs): 4303292
  75. DPC count (execution time 250-500 µs): 0
  76. DPC count (execution time 500-999 µs): 97
  77. DPC count (execution time 1000-1999 µs): 4
  78. DPC count (execution time 2000-3999 µs): 0
  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: pdfxcview.exe
  90.  
  91. Total number of hard pagefaults 3263
  92. Hard pagefault count of hardest hit process: 1334
  93. Highest hard pagefault resolution time (µs): 142711.745614
  94. Total time spent in hard pagefaults (%): 0.356527
  95. Number of processes hit: 11
  96.  
  97.  
  98. _________________________________________________________________________________________________________
  99. PER CPU DATA
  100. _________________________________________________________________________________________________________
  101. CPU 0 Interrupt cycle time (s): 106.318595
  102. CPU 0 ISR highest execution time (µs): 45.927318
  103. CPU 0 ISR total execution time (s): 0.017393
  104. CPU 0 ISR count: 766
  105. CPU 0 DPC highest execution time (µs): 420.322055
  106. CPU 0 DPC total execution time (s): 33.025106
  107. CPU 0 DPC count: 3757139
  108. _________________________________________________________________________________________________________
  109. CPU 1 Interrupt cycle time (s): 28.137289
  110. CPU 1 ISR highest execution time (µs): 54.618421
  111. CPU 1 ISR total execution time (s): 0.076611
  112. CPU 1 ISR count: 2767
  113. CPU 1 DPC highest execution time (µs): 305.149749
  114. CPU 1 DPC total execution time (s): 0.751225
  115. CPU 1 DPC count: 25596
  116. _________________________________________________________________________________________________________
  117. CPU 2 Interrupt cycle time (s): 27.793697
  118. CPU 2 ISR highest execution time (µs): 93.729323
  119. CPU 2 ISR total execution time (s): 0.354958
  120. CPU 2 ISR count: 13707
  121. CPU 2 DPC highest execution time (µs): 306.090226
  122. CPU 2 DPC total execution time (s): 0.894050
  123. CPU 2 DPC count: 33165
  124. _________________________________________________________________________________________________________
  125. CPU 3 Interrupt cycle time (s): 68.432322
  126. CPU 3 ISR highest execution time (µs): 308.305764
  127. CPU 3 ISR total execution time (s): 16.007332
  128. CPU 3 ISR count: 715635
  129. CPU 3 DPC highest execution time (µs): 1547.216792
  130. CPU 3 DPC total execution time (s): 11.484871
  131. CPU 3 DPC count: 487493
  132. _________________________________________________________________________________________________________
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