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latencymon

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Feb 27th, 2021
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  1. CONCLUSION
  2. _________________________________________________________________________________________________________
  3. 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.
  4. LatencyMon has been analyzing your system for 0:00:28 (h:mm:ss) on all processors.
  5.  
  6.  
  7. _________________________________________________________________________________________________________
  8. SYSTEM INFORMATION
  9. _________________________________________________________________________________________________________
  10. Computer name: CANNON-PRINTER
  11. OS version: Windows 10, 10.0, version 2009, build: 19042 (x64)
  12. Hardware: OptiPlex 745, Dell Inc.
  13. CPU: GenuineIntel Intel(R) Core(TM)2 Quad CPU Q6700 @ 2.66GHz
  14. Logical processors: 4
  15. Processor groups: 1
  16. RAM: 8125 MB total
  17.  
  18.  
  19. _________________________________________________________________________________________________________
  20. CPU SPEED
  21. _________________________________________________________________________________________________________
  22. Reported CPU speed: 2658 MHz
  23.  
  24. 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.
  25.  
  26.  
  27. _________________________________________________________________________________________________________
  28. MEASURED INTERRUPT TO USER PROCESS LATENCIES
  29. _________________________________________________________________________________________________________
  30. 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.
  31.  
  32. Highest measured interrupt to process latency (µs): 24670,90
  33. Average measured interrupt to process latency (µs): 7,285792
  34.  
  35. Highest measured interrupt to DPC latency (µs): 24569,0
  36. Average measured interrupt to DPC latency (µs): 3,276822
  37.  
  38.  
  39. _________________________________________________________________________________________________________
  40. REPORTED ISRs
  41. _________________________________________________________________________________________________________
  42. Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.
  43.  
  44. Highest ISR routine execution time (µs): 24474,443190
  45. Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
  46.  
  47. Highest reported total ISR routine time (%): 0,730199
  48. Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
  49.  
  50. Total time spent in ISRs (%) 1,188205
  51.  
  52. ISR count (execution time <250 µs): 15215
  53. ISR count (execution time 250-500 µs): 0
  54. ISR count (execution time 500-1000 µs): 28
  55. ISR count (execution time 1000-2000 µs): 9
  56. ISR count (execution time 2000-4000 µs): 3
  57. ISR count (execution time >=4000 µs): 0
  58.  
  59.  
  60. _________________________________________________________________________________________________________
  61. REPORTED DPCs
  62. _________________________________________________________________________________________________________
  63. 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.
  64.  
  65. Highest DPC routine execution time (µs): 20977,979684
  66. Driver with highest DPC routine execution time: USBPORT.SYS - Controlador de puertos USB 1.1 y 2.0, Microsoft Corporation
  67.  
  68. Highest reported total DPC routine time (%): 0,251741
  69. Driver with highest DPC total execution time: USBPORT.SYS - Controlador de puertos USB 1.1 y 2.0, Microsoft Corporation
  70.  
  71. Total time spent in DPCs (%) 0,690766
  72.  
  73. DPC count (execution time <250 µs): 103307
  74. DPC count (execution time 250-500 µs): 0
  75. DPC count (execution time 500-10000 µs): 188
  76. DPC count (execution time 1000-2000 µs): 3
  77. DPC count (execution time 2000-4000 µs): 2
  78. DPC count (execution time >=4000 µs): 3
  79.  
  80.  
  81. _________________________________________________________________________________________________________
  82. REPORTED HARD PAGEFAULTS
  83. _________________________________________________________________________________________________________
  84. 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.
  85.  
  86. 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.
  87.  
  88. Process with highest pagefault count: explorer.exe
  89.  
  90. Total number of hard pagefaults 25
  91. Hard pagefault count of hardest hit process: 18
  92. Number of processes hit: 2
  93.  
  94.  
  95. _________________________________________________________________________________________________________
  96. PER CPU DATA
  97. _________________________________________________________________________________________________________
  98. CPU 0 Interrupt cycle time (s): 2,666107
  99. CPU 0 ISR highest execution time (µs): 24474,443190
  100. CPU 0 ISR total execution time (s): 0,899412
  101. CPU 0 ISR count: 13404
  102. CPU 0 DPC highest execution time (µs): 16176,696764
  103. CPU 0 DPC total execution time (s): 0,649979
  104. CPU 0 DPC count: 96380
  105. _________________________________________________________________________________________________________
  106. CPU 1 Interrupt cycle time (s): 1,203234
  107. CPU 1 ISR highest execution time (µs): 24236,064710
  108. CPU 1 ISR total execution time (s): 0,378153
  109. CPU 1 ISR count: 1750
  110. CPU 1 DPC highest execution time (µs): 20977,979684
  111. CPU 1 DPC total execution time (s): 0,115339
  112. CPU 1 DPC count: 6364
  113. _________________________________________________________________________________________________________
  114. CPU 2 Interrupt cycle time (s): 0,317932
  115. CPU 2 ISR highest execution time (µs): 24129,492099
  116. CPU 2 ISR total execution time (s): 0,057541
  117. CPU 2 ISR count: 158
  118. CPU 2 DPC highest execution time (µs): 455,101580
  119. CPU 2 DPC total execution time (s): 0,006792
  120. CPU 2 DPC count: 375
  121. _________________________________________________________________________________________________________
  122. CPU 3 Interrupt cycle time (s): 0,295872
  123. CPU 3 ISR highest execution time (µs): 18,826185
  124. CPU 3 ISR total execution time (s): 0,000104
  125. CPU 3 ISR count: 11
  126. CPU 3 DPC highest execution time (µs): 119,917231
  127. CPU 3 DPC total execution time (s): 0,004118
  128. CPU 3 DPC count: 384
  129. _________________________________________________________________________________________________________
  130.  
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