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How to get the cause of high CPU usage by DPC / Interrupt


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Hello,
i have followed your guide step by step. In the end i succesfully found several process with usecs higher than 512. However I couldn't find files to download to upgrade my drivers. Can you help me to find what should I exactly download? And i want to add that I didn't have any problems untill last week. Yesterday while i was playing skyrim, suddenly my pc stuck and I saw 100%cpu on task manager however I couldn't find the suspicious process so i removed everything i recently added to my computer but nothing changed. Thanks for the great guide. Here are my logs if you can help me i will be really pleased! Thanks.

 

CPU Usage Summing By Module For the Whole Trace

 
CPU Usage from 0 us to 74005426 us:
 
     CPU 0 Usage,      CPU 1 Usage,      CPU 2 Usage,      CPU 3 Usage,      CPU 4 Usage,      CPU 5 Usage,      CPU 6 Usage,      CPU 7 Usage, 
     usec      %,      usec      %,      usec      %,      usec      %,      usec      %,      usec      %,      usec      %,      usec      %, Module
     2021   0.00,         0   0.00,         0   0.00,         0   0.00,       151   0.00,         0   0.00,         0   0.00,        85   0.00, ACPI.sys
        0   0.00,         0   0.00,         1   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00, BATTC.SYS
     8440   0.01,         0   0.00,      2662   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         2   0.00, CLASSPNP.SYS
    32402   0.04,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00, HDAudBus.sys
      306   0.00,        92   0.00,       419   0.00,         0   0.00,        44   0.00,       106   0.00,         0   0.00,        11   0.00, NETIO.SYS
      149   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00, Ndu.sys
       20   0.00,         0   0.00,        24   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00, Ntfs.sys
    12942   0.02,        38   0.00,      2423   0.00,         0   0.00,       429   0.00,        37   0.00,        44   0.00,       115   0.00, USBPORT.SYS
       95   0.00,         0   0.00,       152   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00, VerifierExt.sys
  5085790   6.87,         0   0.00,     16143   0.02,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00, Wdf01000.sys
    69885   0.09,         0   0.00,     27209   0.04,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00, afd.sys
       10   0.00,         0   0.00,        20   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00, bowser.sys
   170024   0.23,         0   0.00,    267347   0.36,         0   0.00,         0   0.00,         0   0.00,         0   0.00,        48   0.00, dpclat_driver.sys
   543703   0.73,         0   0.00,       206   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00, dxgkrnl.sys
        5   0.00,         0   0.00,         5   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00, fltmgr.sys
        0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00, hal.dll
     1070   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00, i8042prt.sys
    90242   0.12,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00, iaStorA.sys
       23   0.00,         0   0.00,       499   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00, igdkmd64.sys
  1942234   2.62,         0   0.00,      1975   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00, ndis.sys
     4869   0.01,         0   0.00,      2353   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00, netbt.sys
    10277   0.01,      7528   0.01,     13022   0.02,      7224   0.01,     10548   0.01,      6018   0.01,     12161   0.02,      6404   0.01, ntoskrnl.exe
   537468   0.73,         0   0.00,      3092   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00, nvlddmkm.sys
   597915   0.81,      1130   0.00,     14027   0.02,       880   0.00,      6199   0.01,      1338   0.00,      2144   0.00,      4417   0.01, storport.sys
    24142   0.03,     24542   0.03,     11689   0.02,     13611   0.02,      9373   0.01,     13680   0.02,     18881   0.03,     17349   0.02, tcpip.sys
       88   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00,         0   0.00, usbhub.sys
 
Total = 251696
Elapsed Time, >        0 usecs AND <=        1 usecs, 116812, or  46.41%
Elapsed Time, >        1 usecs AND <=        2 usecs,   4945, or   1.96%
Elapsed Time, >        2 usecs AND <=        4 usecs,  11269, or   4.48%
Elapsed Time, >        4 usecs AND <=        8 usecs,  39528, or  15.70%
Elapsed Time, >        8 usecs AND <=       16 usecs,  32992, or  13.11%
Elapsed Time, >       16 usecs AND <=       32 usecs,  10077, or   4.00%
Elapsed Time, >       32 usecs AND <=       64 usecs,  14718, or   5.85%
Elapsed Time, >       64 usecs AND <=      128 usecs,   8983, or   3.57%
Elapsed Time, >      128 usecs AND <=      256 usecs,   2510, or   1.00%
Elapsed Time, >      256 usecs AND <=      512 usecs,   2444, or   0.97%
Elapsed Time, >      512 usecs AND <=     1024 usecs,   6124, or   2.43%
Elapsed Time, >     1024 usecs AND <=     2048 usecs,   1261, or   0.50%
Elapsed Time, >     2048 usecs AND <=     4096 usecs,     30, or   0.01%
Elapsed Time, >     4096 usecs AND <=     8192 usecs,      3, or   0.00%
Total,                                                251696
 
Total = 39 for module ACPI.sys
Elapsed Time, >        0 usecs AND <=        1 usecs,      0, or   0.00%
Elapsed Time, >        1 usecs AND <=        2 usecs,      0, or   0.00%
Elapsed Time, >        2 usecs AND <=        4 usecs,      0, or   0.00%
Elapsed Time, >        4 usecs AND <=        8 usecs,      0, or   0.00%
Elapsed Time, >        8 usecs AND <=       16 usecs,     16, or  41.03%
Elapsed Time, >       16 usecs AND <=       32 usecs,      2, or   5.13%
Elapsed Time, >       32 usecs AND <=       64 usecs,     14, or  35.90%
Elapsed Time, >       64 usecs AND <=      128 usecs,      4, or  10.26%
Elapsed Time, >      128 usecs AND <=      256 usecs,      0, or   0.00%
Elapsed Time, >      256 usecs AND <=      512 usecs,      3, or   7.69%
Total,                                                    39
 
Total = 1 for module BATTC.SYS
Elapsed Time, >        0 usecs AND <=        1 usecs,      0, or   0.00%
Elapsed Time, >        1 usecs AND <=        2 usecs,      1, or 100.00%
Total,                                                     1
 
Total = 657 for module CLASSPNP.SYS
Elapsed Time, >        0 usecs AND <=        1 usecs,    543, or  82.65%
Elapsed Time, >        1 usecs AND <=        2 usecs,     47, or   7.15%
Elapsed Time, >        2 usecs AND <=        4 usecs,      1, or   0.15%
Elapsed Time, >        4 usecs AND <=        8 usecs,      1, or   0.15%
Elapsed Time, >        8 usecs AND <=       16 usecs,      0, or   0.00%
Elapsed Time, >       16 usecs AND <=       32 usecs,      0, or   0.00%
Elapsed Time, >       32 usecs AND <=       64 usecs,      1, or   0.15%
Elapsed Time, >       64 usecs AND <=      128 usecs,     26, or   3.96%
Elapsed Time, >      128 usecs AND <=      256 usecs,     33, or   5.02%
Elapsed Time, >      256 usecs AND <=      512 usecs,      3, or   0.46%
Elapsed Time, >      512 usecs AND <=     1024 usecs,      2, or   0.30%
Total,                                                   657
 
Total = 2751 for module HDAudBus.sys
Elapsed Time, >        0 usecs AND <=        1 usecs,      0, or   0.00%
Elapsed Time, >        1 usecs AND <=        2 usecs,      0, or   0.00%
Elapsed Time, >        2 usecs AND <=        4 usecs,     22, or   0.80%
Elapsed Time, >        4 usecs AND <=        8 usecs,   1494, or  54.31%
Elapsed Time, >        8 usecs AND <=       16 usecs,    686, or  24.94%
Elapsed Time, >       16 usecs AND <=       32 usecs,    371, or  13.49%
Elapsed Time, >       32 usecs AND <=       64 usecs,    165, or   6.00%
Elapsed Time, >       64 usecs AND <=      128 usecs,     13, or   0.47%
Total,                                                  2751
 
Total = 64 for module NETIO.SYS
Elapsed Time, >        0 usecs AND <=        1 usecs,      0, or   0.00%
Elapsed Time, >        1 usecs AND <=        2 usecs,      0, or   0.00%
Elapsed Time, >        2 usecs AND <=        4 usecs,     11, or  17.19%
Elapsed Time, >        4 usecs AND <=        8 usecs,     25, or  39.06%
Elapsed Time, >        8 usecs AND <=       16 usecs,     18, or  28.13%
Elapsed Time, >       16 usecs AND <=       32 usecs,      3, or   4.69%
Elapsed Time, >       32 usecs AND <=       64 usecs,      2, or   3.13%
Elapsed Time, >       64 usecs AND <=      128 usecs,      5, or   7.81%
Total,                                                    64
 
Total = 63 for module Ndu.sys
Elapsed Time, >        0 usecs AND <=        1 usecs,      6, or   9.52%
Elapsed Time, >        1 usecs AND <=        2 usecs,     31, or  49.21%
Elapsed Time, >        2 usecs AND <=        4 usecs,     22, or  34.92%
Elapsed Time, >        4 usecs AND <=        8 usecs,      1, or   1.59%
Elapsed Time, >        8 usecs AND <=       16 usecs,      3, or   4.76%
Total,                                                    63
 
Total = 15 for module Ntfs.sys
Elapsed Time, >        0 usecs AND <=        1 usecs,      1, or   6.67%
Elapsed Time, >        1 usecs AND <=        2 usecs,      3, or  20.00%
Elapsed Time, >        2 usecs AND <=        4 usecs,      9, or  60.00%
Elapsed Time, >        4 usecs AND <=        8 usecs,      1, or   6.67%
Elapsed Time, >        8 usecs AND <=       16 usecs,      1, or   6.67%
Total,                                                    15
 
Total = 574 for module USBPORT.SYS
Elapsed Time, >        0 usecs AND <=        1 usecs,      0, or   0.00%
Elapsed Time, >        1 usecs AND <=        2 usecs,      0, or   0.00%
Elapsed Time, >        2 usecs AND <=        4 usecs,      0, or   0.00%
Elapsed Time, >        4 usecs AND <=        8 usecs,      0, or   0.00%
Elapsed Time, >        8 usecs AND <=       16 usecs,    140, or  24.39%
Elapsed Time, >       16 usecs AND <=       32 usecs,    298, or  51.92%
Elapsed Time, >       32 usecs AND <=       64 usecs,    109, or  18.99%
Elapsed Time, >       64 usecs AND <=      128 usecs,     19, or   3.31%
Elapsed Time, >      128 usecs AND <=      256 usecs,      7, or   1.22%
Elapsed Time, >      256 usecs AND <=      512 usecs,      1, or   0.17%
Total,                                                   574
 
Total = 74 for module VerifierExt.sys
Elapsed Time, >        0 usecs AND <=        1 usecs,      0, or   0.00%
Elapsed Time, >        1 usecs AND <=        2 usecs,      9, or  12.16%
Elapsed Time, >        2 usecs AND <=        4 usecs,     45, or  60.81%
Elapsed Time, >        4 usecs AND <=        8 usecs,     20, or  27.03%
Total,                                                    74
 
Total = 6348 for module Wdf01000.sys
Elapsed Time, >        0 usecs AND <=        1 usecs,      0, or   0.00%
Elapsed Time, >        1 usecs AND <=        2 usecs,      0, or   0.00%
Elapsed Time, >        2 usecs AND <=        4 usecs,      0, or   0.00%
Elapsed Time, >        4 usecs AND <=        8 usecs,      5, or   0.08%
Elapsed Time, >        8 usecs AND <=       16 usecs,      7, or   0.11%
Elapsed Time, >       16 usecs AND <=       32 usecs,      3, or   0.05%
Elapsed Time, >       32 usecs AND <=       64 usecs,      0, or   0.00%
Elapsed Time, >       64 usecs AND <=      128 usecs,      0, or   0.00%
Elapsed Time, >      128 usecs AND <=      256 usecs,      1, or   0.02%
Elapsed Time, >      256 usecs AND <=      512 usecs,     49, or   0.77%
Elapsed Time, >      512 usecs AND <=     1024 usecs,   5163, or  81.33%
Elapsed Time, >     1024 usecs AND <=     2048 usecs,   1118, or  17.61%
Elapsed Time, >     2048 usecs AND <=     4096 usecs,      2, or   0.03%
Total,                                                  6348
 
Total = 10518 for module afd.sys
Elapsed Time, >        0 usecs AND <=        1 usecs,      0, or   0.00%
Elapsed Time, >        1 usecs AND <=        2 usecs,      0, or   0.00%
Elapsed Time, >        2 usecs AND <=        4 usecs,    208, or   1.98%
Elapsed Time, >        4 usecs AND <=        8 usecs,   4753, or  45.19%
Elapsed Time, >        8 usecs AND <=       16 usecs,   4829, or  45.91%
Elapsed Time, >       16 usecs AND <=       32 usecs,    693, or   6.59%
Elapsed Time, >       32 usecs AND <=       64 usecs,     20, or   0.19%
Elapsed Time, >       64 usecs AND <=      128 usecs,     15, or   0.14%
Total,                                                 10518
 
Total = 2 for module bowser.sys
Elapsed Time, >        0 usecs AND <=        1 usecs,      0, or   0.00%
Elapsed Time, >        1 usecs AND <=        2 usecs,      0, or   0.00%
Elapsed Time, >        2 usecs AND <=        4 usecs,      0, or   0.00%
Elapsed Time, >        4 usecs AND <=        8 usecs,      0, or   0.00%
Elapsed Time, >        8 usecs AND <=       16 usecs,      1, or  50.00%
Elapsed Time, >       16 usecs AND <=       32 usecs,      1, or  50.00%
Total,                                                     2
 
Total = 60407 for module dpclat_driver.sys
Elapsed Time, >        0 usecs AND <=        1 usecs,      0, or   0.00%
Elapsed Time, >        1 usecs AND <=        2 usecs,      0, or   0.00%
Elapsed Time, >        2 usecs AND <=        4 usecs,  10082, or  16.69%
Elapsed Time, >        4 usecs AND <=        8 usecs,  30113, or  49.85%
Elapsed Time, >        8 usecs AND <=       16 usecs,  17388, or  28.78%
Elapsed Time, >       16 usecs AND <=       32 usecs,   2749, or   4.55%
Elapsed Time, >       32 usecs AND <=       64 usecs,     42, or   0.07%
Elapsed Time, >       64 usecs AND <=      128 usecs,     33, or   0.05%
Total,                                                 60407
 
Total = 10380 for module dxgkrnl.sys
Elapsed Time, >        0 usecs AND <=        1 usecs,      6, or   0.06%
Elapsed Time, >        1 usecs AND <=        2 usecs,     54, or   0.52%
Elapsed Time, >        2 usecs AND <=        4 usecs,    178, or   1.71%
Elapsed Time, >        4 usecs AND <=        8 usecs,    175, or   1.69%
Elapsed Time, >        8 usecs AND <=       16 usecs,    604, or   5.82%
Elapsed Time, >       16 usecs AND <=       32 usecs,   1873, or  18.04%
Elapsed Time, >       32 usecs AND <=       64 usecs,   4372, or  42.12%
Elapsed Time, >       64 usecs AND <=      128 usecs,   2714, or  26.15%
Elapsed Time, >      128 usecs AND <=      256 usecs,    403, or   3.88%
Elapsed Time, >      256 usecs AND <=      512 usecs,      1, or   0.01%
Total,                                                 10380
 
Total = 5 for module fltmgr.sys
Elapsed Time, >        0 usecs AND <=        1 usecs,      0, or   0.00%
Elapsed Time, >        1 usecs AND <=        2 usecs,      3, or  60.00%
Elapsed Time, >        2 usecs AND <=        4 usecs,      2, or  40.00%
Total,                                                     5
 
Total = 1 for module hal.dll
Elapsed Time, >        0 usecs AND <=        1 usecs,      1, or 100.00%
Total,                                                     1
 
Total = 22 for module i8042prt.sys
Elapsed Time, >        0 usecs AND <=        1 usecs,      0, or   0.00%
Elapsed Time, >        1 usecs AND <=        2 usecs,      0, or   0.00%
Elapsed Time, >        2 usecs AND <=        4 usecs,      0, or   0.00%
Elapsed Time, >        4 usecs AND <=        8 usecs,      0, or   0.00%
Elapsed Time, >        8 usecs AND <=       16 usecs,      0, or   0.00%
Elapsed Time, >       16 usecs AND <=       32 usecs,      5, or  22.73%
Elapsed Time, >       32 usecs AND <=       64 usecs,     13, or  59.09%
Elapsed Time, >       64 usecs AND <=      128 usecs,      4, or  18.18%
Total,                                                    22
 
Total = 8044 for module iaStorA.sys
Elapsed Time, >        0 usecs AND <=        1 usecs,      0, or   0.00%
Elapsed Time, >        1 usecs AND <=        2 usecs,      0, or   0.00%
Elapsed Time, >        2 usecs AND <=        4 usecs,      0, or   0.00%
Elapsed Time, >        4 usecs AND <=        8 usecs,    916, or  11.39%
Elapsed Time, >        8 usecs AND <=       16 usecs,   6406, or  79.64%
Elapsed Time, >       16 usecs AND <=       32 usecs,    680, or   8.45%
Elapsed Time, >       32 usecs AND <=       64 usecs,     20, or   0.25%
Elapsed Time, >       64 usecs AND <=      128 usecs,     21, or   0.26%
Elapsed Time, >      128 usecs AND <=      256 usecs,      1, or   0.01%
Total,                                                  8044
 
Total = 45 for module igdkmd64.sys
Elapsed Time, >        0 usecs AND <=        1 usecs,      0, or   0.00%
Elapsed Time, >        1 usecs AND <=        2 usecs,      0, or   0.00%
Elapsed Time, >        2 usecs AND <=        4 usecs,      0, or   0.00%
Elapsed Time, >        4 usecs AND <=        8 usecs,     18, or  40.00%
Elapsed Time, >        8 usecs AND <=       16 usecs,     17, or  37.78%
Elapsed Time, >       16 usecs AND <=       32 usecs,     10, or  22.22%
Total,                                                    45
 
Total = 7291 for module ndis.sys
Elapsed Time, >        0 usecs AND <=        1 usecs,      0, or   0.00%
Elapsed Time, >        1 usecs AND <=        2 usecs,      1, or   0.01%
Elapsed Time, >        2 usecs AND <=        4 usecs,    108, or   1.48%
Elapsed Time, >        4 usecs AND <=        8 usecs,   1524, or  20.90%
Elapsed Time, >        8 usecs AND <=       16 usecs,    626, or   8.59%
Elapsed Time, >       16 usecs AND <=       32 usecs,    271, or   3.72%
Elapsed Time, >       32 usecs AND <=       64 usecs,     96, or   1.32%
Elapsed Time, >       64 usecs AND <=      128 usecs,     71, or   0.97%
Elapsed Time, >      128 usecs AND <=      256 usecs,   1404, or  19.26%
Elapsed Time, >      256 usecs AND <=      512 usecs,   2100, or  28.80%
Elapsed Time, >      512 usecs AND <=     1024 usecs,    921, or  12.63%
Elapsed Time, >     1024 usecs AND <=     2048 usecs,    139, or   1.91%
Elapsed Time, >     2048 usecs AND <=     4096 usecs,     27, or   0.37%
Elapsed Time, >     4096 usecs AND <=     8192 usecs,      3, or   0.04%
Total,                                                  7291
 
Total = 15 for module netbt.sys
Elapsed Time, >        0 usecs AND <=        1 usecs,      0, or   0.00%
Elapsed Time, >        1 usecs AND <=        2 usecs,      0, or   0.00%
Elapsed Time, >        2 usecs AND <=        4 usecs,      0, or   0.00%
Elapsed Time, >        4 usecs AND <=        8 usecs,      0, or   0.00%
Elapsed Time, >        8 usecs AND <=       16 usecs,      0, or   0.00%
Elapsed Time, >       16 usecs AND <=       32 usecs,      2, or  13.33%
Elapsed Time, >       32 usecs AND <=       64 usecs,      3, or  20.00%
Elapsed Time, >       64 usecs AND <=      128 usecs,      2, or  13.33%
Elapsed Time, >      128 usecs AND <=      256 usecs,      2, or  13.33%
Elapsed Time, >      256 usecs AND <=      512 usecs,      0, or   0.00%
Elapsed Time, >      512 usecs AND <=     1024 usecs,      3, or  20.00%
Elapsed Time, >     1024 usecs AND <=     2048 usecs,      3, or  20.00%
Total,                                                    15
 
Total = 120730 for module ntoskrnl.exe
Elapsed Time, >        0 usecs AND <=        1 usecs, 115216, or  95.43%
Elapsed Time, >        1 usecs AND <=        2 usecs,   4461, or   3.70%
Elapsed Time, >        2 usecs AND <=        4 usecs,    515, or   0.43%
Elapsed Time, >        4 usecs AND <=        8 usecs,     51, or   0.04%
Elapsed Time, >        8 usecs AND <=       16 usecs,    415, or   0.34%
Elapsed Time, >       16 usecs AND <=       32 usecs,     62, or   0.05%
Elapsed Time, >       32 usecs AND <=       64 usecs,      3, or   0.00%
Elapsed Time, >       64 usecs AND <=      128 usecs,      7, or   0.01%
Total,                                                120730
 
Total = 9810 for module nvlddmkm.sys
Elapsed Time, >        0 usecs AND <=        1 usecs,     14, or   0.14%
Elapsed Time, >        1 usecs AND <=        2 usecs,      5, or   0.05%
Elapsed Time, >        2 usecs AND <=        4 usecs,      6, or   0.06%
Elapsed Time, >        4 usecs AND <=        8 usecs,     28, or   0.29%
Elapsed Time, >        8 usecs AND <=       16 usecs,     96, or   0.98%
Elapsed Time, >       16 usecs AND <=       32 usecs,    929, or   9.47%
Elapsed Time, >       32 usecs AND <=       64 usecs,   6188, or  63.08%
Elapsed Time, >       64 usecs AND <=      128 usecs,   2409, or  24.56%
Elapsed Time, >      128 usecs AND <=      256 usecs,    100, or   1.02%
Elapsed Time, >      256 usecs AND <=      512 usecs,     27, or   0.28%
Elapsed Time, >      512 usecs AND <=     1024 usecs,      8, or   0.08%
Total,                                                  9810
 
Total = 11392 for module storport.sys
Elapsed Time, >        0 usecs AND <=        1 usecs,    999, or   8.77%
Elapsed Time, >        1 usecs AND <=        2 usecs,    319, or   2.80%
Elapsed Time, >        2 usecs AND <=        4 usecs,     58, or   0.51%
Elapsed Time, >        4 usecs AND <=        8 usecs,    401, or   3.52%
Elapsed Time, >        8 usecs AND <=       16 usecs,    809, or   7.10%
Elapsed Time, >       16 usecs AND <=       32 usecs,   1035, or   9.09%
Elapsed Time, >       32 usecs AND <=       64 usecs,   3540, or  31.07%
Elapsed Time, >       64 usecs AND <=      128 usecs,   3633, or  31.89%
Elapsed Time, >      128 usecs AND <=      256 usecs,    538, or   4.72%
Elapsed Time, >      256 usecs AND <=      512 usecs,     58, or   0.51%
Elapsed Time, >      512 usecs AND <=     1024 usecs,      1, or   0.01%
Elapsed Time, >     1024 usecs AND <=     2048 usecs,      0, or   0.00%
Elapsed Time, >     2048 usecs AND <=     4096 usecs,      1, or   0.01%
Total,                                                 11392
 
Total = 2442 for module tcpip.sys
Elapsed Time, >        0 usecs AND <=        1 usecs,     26, or   1.06%
Elapsed Time, >        1 usecs AND <=        2 usecs,      9, or   0.37%
Elapsed Time, >        2 usecs AND <=        4 usecs,      2, or   0.08%
Elapsed Time, >        4 usecs AND <=        8 usecs,      0, or   0.00%
Elapsed Time, >        8 usecs AND <=       16 usecs,    930, or  38.08%
Elapsed Time, >       16 usecs AND <=       32 usecs,   1090, or  44.64%
Elapsed Time, >       32 usecs AND <=       64 usecs,    128, or   5.24%
Elapsed Time, >       64 usecs AND <=      128 usecs,      7, or   0.29%
Elapsed Time, >      128 usecs AND <=      256 usecs,     21, or   0.86%
Elapsed Time, >      256 usecs AND <=      512 usecs,    202, or   8.27%
Elapsed Time, >      512 usecs AND <=     1024 usecs,     26, or   1.06%
Elapsed Time, >     1024 usecs AND <=     2048 usecs,      1, or   0.04%
Total,                                                  2442
 
Total = 6 for module usbhub.sys
Elapsed Time, >        0 usecs AND <=        1 usecs,      0, or   0.00%
Elapsed Time, >        1 usecs AND <=        2 usecs,      2, or  33.33%
Elapsed Time, >        2 usecs AND <=        4 usecs,      0, or   0.00%
Elapsed Time, >        4 usecs AND <=        8 usecs,      2, or  33.33%
Elapsed Time, >        8 usecs AND <=       16 usecs,      0, or   0.00%
Elapsed Time, >       16 usecs AND <=       32 usecs,      0, or   0.00%
Elapsed Time, >       32 usecs AND <=       64 usecs,      2, or  33.33%
Total,                                                     6
 

All Module = 251696,  Total = 251696,   EQUAL

Edited by GreatKingRat
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  • 2 weeks later...

Hi,

I followed your guide because of problems with constant CPU Usage by System Interrupts (about 25-30%) and seemingly random crashes (without BSoD). I needed to change some things in my WPA version to do it, but I found "ntkrnlmp.exe" with either "ntkrnlmp.exe!PspSystemThreadStartup" or, after following down "ACPI.sys!ACPIWorkerThread" to the end,  "ntkrnlmp.exe!KeReleaseSpinLock", as the cause(?) of the problem. (See attached image.)

jbhofhwydNYTBw.png

 

I searched online for solutions but was not succesful (seeing as ntkrnlmp.exe is just a windows function, right?).

Things I tried without success include:

Clean reboot

New Graphics driver

Deinstallation of AV

Trying either of two RAM-sticks alone

Memtest86 for 5h (no errors)

Prime95 (crash after few seconds of any stress test)

scf /scannow (no errors)

and probabely some other things.

 

If you or anyone can see anything helpful, I would be very very thankful. I can of course also upload the .etl-file and send it via PM if that would do any good.

 

Vielen Dank im Vorraus und für das Bereitstellen des Guides allein schon!

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this is the ACPI.sys usage. This is hard to debug. Do you use a laptop?

Yes, the Sony Vaio VPCZ13B7E. Which can be pretty annoying driver/software-wise.

So what I understand is, it could have a lot of reasons like high temperature etc.?

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I deactivated it, but sadly that was no use. Before, I had already tried starting the laptop without its battery, which didn't resolve the problem either.

I then deactivated everything in the device manager that would let me do it (besides the IDE controller), but no change. I searched for "high acpi.sys usage" online and found (some) people saying that for them, the solution was removing a device physically rather than in the device manager, but on a laptop this is a bit difficult. I'm getting desparate enough to try and open it though...

 

Edit: Additionally, others seemed to need to update their BIOS, but in my case it seems there are no updates available for the Insyde H2O BIOS. The only thing I can find is a community hack to get an advanced BIOS/debug menu with more options. I don't know if that would do any good though.

Edited by noway149
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I loaded the default BIOS settings (again), and tried SpeedFan. Sadly neither did work, because SpeedFan is not able to access the fan speed. This seems to be because Sony did not make the way to do it public. I tried to get a configuration from the SpeedFan website, but there is no entry for (any) Sony Vaio motherboard model. I tried out some power management features in a Sony program, but they did not change anything either.

 

Edit: Things that might be interesting:

- When I started SpeedFan for the first time, the laptop crashed pretty quick. That could have been coincidence though, because it had been running relatively long at this time.

- The Temp1, Core0 and Core1 hover between 60 and 90 °C (relatively fast, average is 70-80), while being at the latter even in idle directly after startup after being turned off for hours.

- While using Small FFT in Prime95 temperatures hover between 90 °C and 100 °C.

- I already tried cleaning off dust by using a vacuum cleaner held to the vents.

 

Edit+:

- After all the things I tried, Prime95 is able to run in Small FFT Mode for at least an hour now (no time to test further today).

- The Temperature average kept  at 95 °C.

- Even when using Prime95, it only uses about 70% of the CPU, System Interrupts is still at about 25%.

- When stopping the test, CPU temperature readings instantly go down to about 75 °C. This seems a bit faster than realistic.

Edited by noway149
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NBFC seems like it could somehow do it, but the preexisting config files for other Sony notebooks didn't work. I followed the manual to create my own config file, in spite of the warnings, but I could find only one register, 88, that made sense to be the fan speed, seemingly the read register, in RW. There was no register with similar value. The register right next to it, 89, did change around a lot, but those changes were seemingly random. The only registers with similar values to each other were 0, 1 and 2, but they didn't fit to be the fan speed, so my best guess is that they are temperature readings. I also tried doing everything plugging in and on battery, because I heard there was a possibility of a BIOS entry like "Fan always on on AC power", but without success. There were some changed offsets in RW for the EC when plugging the laptop in and out, though.

Edited by noway149
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Hello. I started getting issues with my PC about 2 months ago and I hope you could help me out with it, as I'm no expert with computers.

 

First of all, I have AMD FX-8350 8 core processor that runs flawlessly (at least in my opinion), however, Interrupts start taking 7% of CPU usage at random. One day everything is fine, the next day I have to restart my PC like crazy make it stop. So I downloaded LatencyMon since it seemed easier and got these two results.

 

http://oi61.tinypic.com/ifpilf.jpg

http://oi60.tinypic.com/2csgwfd.jpg

 

I tried turning my router off and storport.sys dropped down completely, though ndis.sys remained the same. As for hal.dll, I really don't know what is that, nor where to find newer drivers for such. However, these are the results while the CPU was at 1%, so I don't know if I'd get a completely different driver if I waited for it to jump back up to 7~10%.

 

Since I have no experience with this, could I get rid off the issue by re-installing Windows, instead of trying to deal with one culprit?

 

Also, if it means anything, this started when I opened my PC to push the graphic card a bit harder onto the motherboard (I was losing signal on my monitor). Ever since I did that, my PC has been acting really strange. Sometimes it's stuck in BIOS and won't move, so I have to force restart it. Or it gets stuck at 'Starting Windows' part and I have to restart it again. Other times it won't restart itself through Windows, it gets stuck at 'Shutting down'. And another thing, it shuts itself down after a while when it's in Sleep mode, but recently it just started doing the opposite by turning itself back on in the middle of the night.

 

I really don't know if it's the hadware's fault, or software. I had to change multiple parts in my system due to coil whine issues, so I'm not sure if there are some older drivers that are still installed to cause it to act like this.

Edited by AteraK
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