DPC Latency Problems / Audio Glitches

Shamir82 · Oct 28, 2014

Hi there,

I hope that you could help me with my problem, I got a new laptop to use for my audio software, but I'm getting DPC latency problems and audio glitches. :-(

I made a fresh Windows 8.1 install and installed just the necessary drivers and my audio software.

I did a DPC Report that I'll post below.

My LAptop:

Operating System Windows 8.1 Core x64

Hp Envy15-k000ng
Processor: Intel Core i5-4210U
Memory: 8 GBytes DDR3L SD RAM
Hard Drive: 1 TB SATA
Graphic Card: NVIDIA Geforce 840-M 2 GB DDR3

Here's my DPC Report:

Code:

--------------------------
DPC Info


--------------------------
CPU Usage Summing By Module For the Whole Trace


CPU Usage from 0 us to 181649069 us:


     CPU 0 Usage      CPU 1 Usage      CPU 2 Usage      CPU 3 Usage 
     usec      %      usec      %      usec      %      usec      % Module
  3379744   1.86  17805125   9.80      6509   0.00      4761   0.00 "Unknown"


Total = 332500
Elapsed Time, >        0 usecs AND <=        1 usecs,   1921, or   0.58%
Elapsed Time, >        1 usecs AND <=        2 usecs,   6120, or   1.84%
Elapsed Time, >        2 usecs AND <=        4 usecs,  13278, or   3.99%
Elapsed Time, >        4 usecs AND <=        8 usecs,  17009, or   5.12%
Elapsed Time, >        8 usecs AND <=       16 usecs,  32751, or   9.85%
Elapsed Time, >       16 usecs AND <=       32 usecs,   9796, or   2.95%
Elapsed Time, >       32 usecs AND <=       64 usecs,  79662, or  23.96%
Elapsed Time, >       64 usecs AND <=      128 usecs, 163490, or  49.17%
Elapsed Time, >      128 usecs AND <=      256 usecs,   8216, or   2.47%
Elapsed Time, >      256 usecs AND <=      512 usecs,    254, or   0.08%
Elapsed Time, >      512 usecs AND <=     1024 usecs,      3, or   0.00%
Total,                                                332500


Total = 332500 for module "Unknown"
Elapsed Time, >        0 usecs AND <=        1 usecs,   1921, or   0.58%
Elapsed Time, >        1 usecs AND <=        2 usecs,   6120, or   1.84%
Elapsed Time, >        2 usecs AND <=        4 usecs,  13278, or   3.99%
Elapsed Time, >        4 usecs AND <=        8 usecs,  17009, or   5.12%
Elapsed Time, >        8 usecs AND <=       16 usecs,  32751, or   9.85%
Elapsed Time, >       16 usecs AND <=       32 usecs,   9796, or   2.95%
Elapsed Time, >       32 usecs AND <=       64 usecs,  79662, or  23.96%
Elapsed Time, >       64 usecs AND <=      128 usecs, 163490, or  49.17%
Elapsed Time, >      128 usecs AND <=      256 usecs,   8216, or   2.47%
Elapsed Time, >      256 usecs AND <=      512 usecs,    254, or   0.08%
Elapsed Time, >      512 usecs AND <=     1024 usecs,      3, or   0.00%
Total,                                                332500


All Module = 332500,  Total = 332500,   EQUAL


--------------------------
Usage From 0 ms to 181649 ms, Summing In 1 second intervals. Intervals=182


                             CPU 0 Usage       CPU 1 Usage       CPU 2 Usage       CPU 3 Usage 
Start (ms) End (ms)        (usec)      %     (usec)      %     (usec)      %     (usec)      % 
         0-1000      :     18217,   1.82     94278,   9.43        42,   0.00        13,   0.00
      1000-2000      :     20622,   2.06    100046,  10.00        12,   0.00         0,   0.00
      2000-3000      :     18231,   1.82    102695,  10.27        28,   0.00        17,   0.00
      3000-4000      :     15271,   1.53    103727,  10.37         5,   0.00        22,   0.00
      4000-5000      :     20401,   2.04     97076,   9.71        42,   0.00         6,   0.00
      5000-6000      :     18691,   1.87     99089,   9.91        23,   0.00        32,   0.00
      6000-7000      :     23776,   2.38     85000,   8.50        19,   0.00        80,   0.01
      7000-8000      :     19953,   2.00     86241,   8.62        20,   0.00        74,   0.01
      8000-9000      :     17899,   1.79    100826,  10.08         8,   0.00         2,   0.00
      9000-10000     :     18130,   1.81    100161,  10.02       125,   0.01        14,   0.00
     10000-11000     :     18218,   1.82     98182,   9.82       137,   0.01        26,   0.00
     11000-12000     :     24824,   2.48     82586,   8.26        27,   0.00        19,   0.00
     12000-13000     :     23178,   2.32     81766,   8.18        12,   0.00        42,   0.00
     13000-14000     :     20120,   2.01     97143,   9.71        21,   0.00         9,   0.00
     14000-15000     :     19502,   1.95     96541,   9.65        12,   0.00        18,   0.00
     15000-16000     :     20285,   2.03     96181,   9.62        33,   0.00        15,   0.00
     16000-17000     :     26384,   2.64     91277,   9.13        35,   0.00         5,   0.00
     17000-18000     :     30279,   3.03     97013,   9.70         5,   0.00         8,   0.00
     18000-19000     :     24080,   2.41     98473,   9.85       140,   0.01        18,   0.00
     19000-20000     :     20206,   2.02     94777,   9.48        64,   0.01        14,   0.00
     20000-21000     :     17486,   1.75    101572,  10.16         9,   0.00         3,   0.00
     21000-22000     :     20872,   2.09     97963,   9.80        58,   0.01        84,   0.01
     22000-23000     :     19482,   1.95     96744,   9.67        23,   0.00        74,   0.01
     23000-24000     :     16607,   1.66     97681,   9.77        33,   0.00         5,   0.00
     24000-25000     :     20465,   2.05     98358,   9.84        19,   0.00         1,   0.00
     25000-26000     :     18556,   1.86    102263,  10.23        40,   0.00        18,   0.00
     26000-27000     :     18598,   1.86     98178,   9.82        12,   0.00        35,   0.00
     27000-28000     :     19157,   1.92     97781,   9.78        17,   0.00        97,   0.01
     28000-29000     :     19175,   1.92     98660,   9.87        34,   0.00        85,   0.01
     29000-30000     :     14618,   1.46     96130,   9.61         7,   0.00        23,   0.00
     30000-31000     :     17470,   1.75     98638,   9.86        16,   0.00         0,   0.00
     31000-32000     :     16957,   1.70     96162,   9.62        32,   0.00        13,   0.00
     32000-33000     :     18607,   1.86     96605,   9.66         4,   0.00         7,   0.00
     33000-34000     :     17535,   1.75     98132,   9.81        30,   0.00        13,   0.00
     34000-35000     :     16723,   1.67     99991,  10.00        53,   0.01        16,   0.00
     35000-36000     :     18166,   1.82     99530,   9.95         1,   0.00        11,   0.00
     36000-37000     :     17496,   1.75     99316,   9.93       118,   0.01        16,   0.00
     37000-38000     :     15425,   1.54     97518,   9.75        75,   0.01         0,   0.00
     38000-39000     :     21154,   2.12     96928,   9.69        14,   0.00        22,   0.00
     39000-40000     :     18180,   1.82     96034,   9.60        93,   0.01        23,   0.00
     40000-41000     :     17057,   1.71     98176,   9.82        65,   0.01         1,   0.00
     41000-42000     :     16793,   1.68    100959,  10.10        18,   0.00         0,   0.00
     42000-43000     :     17404,   1.74    100291,  10.03        30,   0.00        21,   0.00
     43000-44000     :     20187,   2.02     98823,   9.88        13,   0.00        18,   0.00
     44000-45000     :     19745,   1.97     99834,   9.98         9,   0.00        17,   0.00
     45000-46000     :     17044,   1.70    101539,  10.15        32,   0.00        17,   0.00
     46000-47000     :     17514,   1.75    103234,  10.32        17,   0.00        14,   0.00
     47000-48000     :     18859,   1.89     99575,   9.96        23,   0.00         1,   0.00
     48000-49000     :     18742,   1.87    101382,  10.14         3,   0.00        62,   0.01
     49000-50000     :     19876,   1.99    101360,  10.14        10,   0.00        95,   0.01
     50000-51000     :     11103,   1.11     98718,   9.87        12,   0.00         0,   0.00
     51000-52000     :     11295,   1.13     95973,   9.60        47,   0.00       124,   0.01
     52000-53000     :     19326,   1.93    101021,  10.10         6,   0.00        85,   0.01
     53000-54000     :     19182,   1.92    101776,  10.18        17,   0.00        28,   0.00
     54000-55000     :     17982,   1.80    103036,  10.30        11,   0.00        25,   0.00
     55000-56000     :     13116,   1.31     97626,   9.76        40,   0.00        13,   0.00
     56000-57000     :     18890,   1.89    104149,  10.41         8,   0.00        18,   0.00
     57000-58000     :     19506,   1.95     99673,   9.97        58,   0.01        12,   0.00
     58000-59000     :     19081,   1.91    102054,  10.21        30,   0.00        11,   0.00
     59000-60000     :     19978,   2.00     99683,   9.97         5,   0.00        10,   0.00
     60000-61000     :     18756,   1.88    104432,  10.44        96,   0.01         1,   0.00
     61000-62000     :     19029,   1.90    103207,  10.32        92,   0.01         0,   0.00
     62000-63000     :     18199,   1.82    104210,  10.42        15,   0.00        32,   0.00
     63000-64000     :     17763,   1.78    103743,  10.37       122,   0.01        22,   0.00
     64000-65000     :     17996,   1.80    104072,  10.41        93,   0.01         5,   0.00
     65000-66000     :     19155,   1.92    101569,  10.16        32,   0.00         8,   0.00
     66000-67000     :     19924,   1.99    101317,  10.13        16,   0.00         8,   0.00
     67000-68000     :     15937,   1.59    105358,  10.54        14,   0.00        16,   0.00
     68000-69000     :     18350,   1.84    103369,  10.34        26,   0.00        14,   0.00
     69000-70000     :     18325,   1.83    102402,  10.24        13,   0.00        30,   0.00
     70000-71000     :     18481,   1.85    102331,  10.23        22,   0.00        13,   0.00
     71000-72000     :     17910,   1.79    102748,  10.27        14,   0.00         0,   0.00
     72000-73000     :     18907,   1.89     99612,   9.96        55,   0.01        77,   0.01
     73000-74000     :     18762,   1.88    100429,  10.04        13,   0.00        97,   0.01
     74000-75000     :     20805,   2.08     96580,   9.66        36,   0.00         3,   0.00
     75000-76000     :     20710,   2.07     99756,   9.98        39,   0.00         9,   0.00
     76000-77000     :     19602,   1.96    101410,  10.14         4,   0.00         0,   0.00
     77000-78000     :     11562,   1.16     95555,   9.56         9,   0.00        16,   0.00
     78000-79000     :      4966,   0.50     92092,   9.21        80,   0.01        12,   0.00
     79000-80000     :     11600,   1.16     99922,   9.99        74,   0.01        25,   0.00
     80000-81000     :     17845,   1.78    102973,  10.30        21,   0.00        10,   0.00
     81000-82000     :     16758,   1.68    104262,  10.43        32,   0.00        97,   0.01
     82000-83000     :     19149,   1.91    101998,  10.20        20,   0.00        62,   0.01
     83000-84000     :     18045,   1.80    101908,  10.19        56,   0.01         0,   0.00
     84000-85000     :     18859,   1.89    103268,  10.33        24,   0.00         6,   0.00
     85000-86000     :      8010,   0.80     96170,   9.62         8,   0.00        11,   0.00
     86000-87000     :      5938,   0.59     91451,   9.15        15,   0.00         1,   0.00
     87000-88000     :      4543,   0.45     92835,   9.28         3,   0.00        10,   0.00
     88000-89000     :     15665,   1.57     97012,   9.70        44,   0.00        29,   0.00
     89000-90000     :     20110,   2.01    101498,  10.15         8,   0.00        16,   0.00
     90000-91000     :     18271,   1.83    102395,  10.24         0,   0.00        72,   0.01
     91000-92000     :     19259,   1.93    101799,  10.18         6,   0.00        68,   0.01
     92000-93000     :     21650,   2.17     97735,   9.77        22,   0.00         0,   0.00
     93000-94000     :     17652,   1.77    102736,  10.27       115,   0.01        15,   0.00
     94000-95000     :     17404,   1.74    102206,  10.22        99,   0.01         3,   0.00
     95000-96000     :     19936,   1.99    100542,  10.05        18,   0.00        41,   0.00
     96000-97000     :     19958,   2.00     99021,   9.90        34,   0.00        23,   0.00
     97000-98000     :     18237,   1.82     99263,   9.93        38,   0.00         9,   0.00
     98000-99000     :     19233,   1.92     97582,   9.76        30,   0.00         5,   0.00
     99000-100000    :     17737,   1.77     98843,   9.88        40,   0.00        31,   0.00
    100000-101000    :     18707,   1.87    102270,  10.23        35,   0.00         0,   0.00
    101000-102000    :     20266,   2.03     99789,   9.98        47,   0.00         0,   0.00
    102000-103000    :     20102,   2.01     98235,   9.82       106,   0.01        28,   0.00
    103000-104000    :     18593,   1.86    101978,  10.20        79,   0.01        17,   0.00
    104000-105000    :     17532,   1.75    101228,  10.12        14,   0.00        17,   0.00
    105000-106000    :     19270,   1.93     98804,   9.88        14,   0.00       101,   0.01
    106000-107000    :     20291,   2.03     96708,   9.67        29,   0.00        66,   0.01
    107000-108000    :     19019,   1.90     99442,   9.94        19,   0.00         9,   0.00
    108000-109000    :     17254,   1.73    102178,  10.22        34,   0.00        29,   0.00
    109000-110000    :     18370,   1.84     99905,   9.99        25,   0.00        10,   0.00
    110000-111000    :     16288,   1.63    102528,  10.25         2,   0.00        11,   0.00
    111000-112000    :     18540,   1.85    101330,  10.13        27,   0.00        14,   0.00
    112000-113000    :     18227,   1.82     99151,   9.92        21,   0.00         0,   0.00
    113000-114000    :     18064,   1.81     99173,   9.92        44,   0.00        24,   0.00
    114000-115000    :     10885,   1.09     92903,   9.29         3,   0.00        62,   0.01
    115000-116000    :     18573,   1.86     98227,   9.82        33,   0.00        61,   0.01
    116000-117000    :     16041,   1.60     96519,   9.65         2,   0.00         8,   0.00
    117000-118000    :      8113,   0.81     87438,   8.74        98,   0.01         0,   0.00
    118000-119000    :     11259,   1.13     95759,   9.58        56,   0.01         0,   0.00
    119000-120000    :     16546,   1.65    100189,  10.02         3,   0.00         5,   0.00
    120000-121000    :     22814,   2.28     94637,   9.46        28,   0.00        19,   0.00
    121000-122000    :     18345,   1.83     99486,   9.95         2,   0.00        17,   0.00
    122000-123000    :     18740,   1.87     97447,   9.74        29,   0.00        12,   0.00
    123000-124000    :     19051,   1.91     99373,   9.94        91,   0.01         5,   0.00
    124000-125000    :     17465,   1.75     99312,   9.93        66,   0.01         1,   0.00
    125000-126000    :     18409,   1.84     99530,   9.95        35,   0.00         3,   0.00
    126000-127000    :     19350,   1.94     98950,   9.90        24,   0.00        23,   0.00
    127000-128000    :     17574,   1.76    101589,  10.16         7,   0.00         7,   0.00
    128000-129000    :     19382,   1.94    101318,  10.13        12,   0.00        19,   0.00
    129000-130000    :     17621,   1.76    100927,  10.09        35,   0.00         7,   0.00
    130000-131000    :     19351,   1.94    100282,  10.03        32,   0.00        22,   0.00
    131000-132000    :     19911,   1.99     97899,   9.79        23,   0.00        30,   0.00
    132000-133000    :     20295,   2.03     97311,   9.73        31,   0.00        84,   0.01
    133000-134000    :     21258,   2.13     96783,   9.68        27,   0.00        60,   0.01
    134000-135000    :     20009,   2.00     99163,   9.92        12,   0.00         8,   0.00
    135000-136000    :     18693,   1.87     98639,   9.86        23,   0.00       131,   0.01
    136000-137000    :     19729,   1.97     98596,   9.86         1,   0.00        93,   0.01
    137000-138000    :     28662,   2.87     72314,   7.23        11,   0.00        29,   0.00
    138000-139000    :     29461,   2.95     65114,   6.51         9,   0.00        23,   0.00
    139000-140000    :     20333,   2.03     98145,   9.81        17,   0.00        58,   0.01
    140000-141000    :     19269,   1.93     99046,   9.90         0,   0.00         7,   0.00
    141000-142000    :     20136,   2.01     98022,   9.80        18,   0.00        15,   0.00
    142000-143000    :     22940,   2.29     95040,   9.50        34,   0.00         1,   0.00
    143000-144000    :     24134,   2.41     98394,   9.84         6,   0.00         0,   0.00
    144000-145000    :     19560,   1.96     99032,   9.90        61,   0.01        29,   0.00
    145000-146000    :     18088,   1.81     91263,   9.13        70,   0.01         3,   0.00
    146000-147000    :     21199,   2.12     93781,   9.38         7,   0.00        13,   0.00
    147000-148000    :     17648,   1.76     99567,   9.96       111,   0.01        28,   0.00
    148000-149000    :     17044,   1.70    100415,  10.04        70,   0.01        39,   0.00
    149000-150000    :     18821,   1.88     99409,   9.94        10,   0.00         0,   0.00
    150000-151000    :     18212,   1.82     99257,   9.93        62,   0.01         0,   0.00
    151000-152000    :     20215,   2.02     96660,   9.67         5,   0.00        50,   0.01
    152000-153000    :     19746,   1.97     94584,   9.46        14,   0.00         7,   0.00
    153000-154000    :     20662,   2.07     96750,   9.68        36,   0.00        24,   0.00
    154000-155000    :     19447,   1.94     98876,   9.89        18,   0.00        14,   0.00
    155000-156000    :     19476,   1.95     99496,   9.95        14,   0.00        38,   0.00
    156000-157000    :     18612,   1.86     98421,   9.84        14,   0.00       162,   0.02
    157000-158000    :     21592,   2.16     94844,   9.48        20,   0.00       100,   0.01
    158000-159000    :     19449,   1.94     97994,   9.80        31,   0.00        17,   0.00
    159000-160000    :     18752,   1.88     97057,   9.71        20,   0.00        79,   0.01
    160000-161000    :     18629,   1.86     98030,   9.80        20,   0.00        88,   0.01
    161000-162000    :     19402,   1.94     97253,   9.73        33,   0.00         6,   0.00
    162000-163000    :     19353,   1.94     99014,   9.90        33,   0.00        24,   0.00
    163000-164000    :     19397,   1.94     97998,   9.80        38,   0.00         7,   0.00
    164000-165000    :     17935,   1.79     99076,   9.91        43,   0.00         7,   0.00
    165000-166000    :     20022,   2.00     98602,   9.86        16,   0.00        17,   0.00
    166000-167000    :     19479,   1.95     99278,   9.93         1,   0.00         4,   0.00
    167000-168000    :     18290,   1.83     99577,   9.96         5,   0.00         0,   0.00
    168000-169000    :     17593,   1.76     99823,   9.98        81,   0.01        28,   0.00
    169000-170000    :     17742,   1.77     99182,   9.92        64,   0.01        24,   0.00
    170000-171000    :     20104,   2.01     96692,   9.67        37,   0.00        12,   0.00
    171000-172000    :     16639,   1.66    102090,  10.21        14,   0.00        85,   0.01
    172000-173000    :     19399,   1.94     97676,   9.77        34,   0.00        95,   0.01
    173000-174000    :     20709,   2.07     95634,   9.56        59,   0.01        12,   0.00
    174000-175000    :     18723,   1.87     97646,   9.76        52,   0.01         1,   0.00
    175000-176000    :     20077,   2.01     96367,   9.64        38,   0.00         8,   0.00
    176000-177000    :     20803,   2.08     98510,   9.85        11,   0.00         6,   0.00
    177000-178000    :     21105,   2.11     97033,   9.70        27,   0.00        24,   0.00
    178000-179000    :     19039,   1.90     98849,   9.88         9,   0.00         0,   0.00
    179000-180000    :     18779,   1.88     98103,   9.81         5,   0.00        10,   0.00
    180000-181000    :     22893,   2.29     54709,   5.47       393,   0.04         8,   0.00
    181000-181649    :     15478,   2.38     49660,   7.65       124,   0.02        12,   0.00


--------------------------
Interrupt Info


--------------------------
CPU Usage Summing By Module For the Whole Trace


CPU Usage from 0 us to 181649069 us:


     CPU 0 Usage      CPU 1 Usage      CPU 2 Usage      CPU 3 Usage 
     usec      %      usec      %      usec      %      usec      % Module
  1375888   0.76   4146444   2.28         0   0.00         0   0.00 "Unknown"


Total = 283117
Elapsed Time, >        0 usecs AND <=        1 usecs,  11160, or   3.94%
Elapsed Time, >        1 usecs AND <=        2 usecs,  38436, or  13.58%
Elapsed Time, >        2 usecs AND <=        4 usecs, 108624, or  38.37%
Elapsed Time, >        4 usecs AND <=        8 usecs,  21805, or   7.70%
Elapsed Time, >        8 usecs AND <=       16 usecs,  14925, or   5.27%
Elapsed Time, >       16 usecs AND <=       32 usecs,  46373, or  16.38%
Elapsed Time, >       32 usecs AND <=       64 usecs,   7217, or   2.55%
Elapsed Time, >       64 usecs AND <=      128 usecs,  31961, or  11.29%
Elapsed Time, >      128 usecs AND <=      256 usecs,   2616, or   0.92%
Total,                                                283117


Total = 283117 for module "Unknown"
Elapsed Time, >        0 usecs AND <=        1 usecs,  11160, or   3.94%
Elapsed Time, >        1 usecs AND <=        2 usecs,  38436, or  13.58%
Elapsed Time, >        2 usecs AND <=        4 usecs, 108624, or  38.37%
Elapsed Time, >        4 usecs AND <=        8 usecs,  21805, or   7.70%
Elapsed Time, >        8 usecs AND <=       16 usecs,  14925, or   5.27%
Elapsed Time, >       16 usecs AND <=       32 usecs,  46373, or  16.38%
Elapsed Time, >       32 usecs AND <=       64 usecs,   7217, or   2.55%
Elapsed Time, >       64 usecs AND <=      128 usecs,  31961, or  11.29%
Elapsed Time, >      128 usecs AND <=      256 usecs,   2616, or   0.92%
Total,                                                283117


All Module = 283117,  Total = 283117,   EQUAL


--------------------------
Usage From 0 ms to 181649 ms, Summing In 1 second intervals. Intervals=182


                             CPU 0 Usage       CPU 1 Usage       CPU 2 Usage       CPU 3 Usage 
Start (ms) End (ms)        (usec)      %     (usec)      %     (usec)      %     (usec)      % 
         0-1000      :      6454,   0.65     22378,   2.24         0,   0.00         0,   0.00
      1000-2000      :      8293,   0.83     23160,   2.32         0,   0.00         0,   0.00
      2000-3000      :      7622,   0.76     24481,   2.45         0,   0.00         0,   0.00
      3000-4000      :      7272,   0.73     24585,   2.46         0,   0.00         0,   0.00
      4000-5000      :      7185,   0.72     24769,   2.48         0,   0.00         0,   0.00
      5000-6000      :      8689,   0.87     23036,   2.30         0,   0.00         0,   0.00
      6000-7000      :      8884,   0.89     21834,   2.18         0,   0.00         0,   0.00
      7000-8000      :      8045,   0.80     22581,   2.26         0,   0.00         0,   0.00
      8000-9000      :      8343,   0.83     23558,   2.36         0,   0.00         0,   0.00
      9000-10000     :      8186,   0.82     23665,   2.37         0,   0.00         0,   0.00
     10000-11000     :      8095,   0.81     24286,   2.43         0,   0.00         0,   0.00
     11000-12000     :      8580,   0.86     22198,   2.22         0,   0.00         0,   0.00
     12000-13000     :      8281,   0.83     22554,   2.26         0,   0.00         0,   0.00
     13000-14000     :      8697,   0.87     22941,   2.29         0,   0.00         0,   0.00
     14000-15000     :      8237,   0.82     23570,   2.36         0,   0.00         0,   0.00
     15000-16000     :      7563,   0.76     24031,   2.40         0,   0.00         0,   0.00
     16000-17000     :      9192,   0.92     22257,   2.23         0,   0.00         0,   0.00
     17000-18000     :     10314,   1.03     21309,   2.13         0,   0.00         0,   0.00
     18000-19000     :      9139,   0.91     22794,   2.28         0,   0.00         0,   0.00
     19000-20000     :      7456,   0.75     18617,   1.86         0,   0.00         0,   0.00
     20000-21000     :      7473,   0.75     24711,   2.47         0,   0.00         0,   0.00
     21000-22000     :      8418,   0.84     23674,   2.37         0,   0.00         0,   0.00
     22000-23000     :      7919,   0.79     24179,   2.42         0,   0.00         0,   0.00
     23000-24000     :      6635,   0.66     21974,   2.20         0,   0.00         0,   0.00
     24000-25000     :      7861,   0.79     24088,   2.41         0,   0.00         0,   0.00
     25000-26000     :      8101,   0.81     24554,   2.46         0,   0.00         0,   0.00
     26000-27000     :      7678,   0.77     24027,   2.40         0,   0.00         0,   0.00
     27000-28000     :      8730,   0.87     23012,   2.30         0,   0.00         0,   0.00
     28000-29000     :      8416,   0.84     23532,   2.35         0,   0.00         0,   0.00
     29000-30000     :      5552,   0.56     16598,   1.66         0,   0.00         0,   0.00
     30000-31000     :      7416,   0.74     23893,   2.39         0,   0.00         0,   0.00
     31000-32000     :      6762,   0.68     19096,   1.91         0,   0.00         0,   0.00
     32000-33000     :      7423,   0.74     21212,   2.12         0,   0.00         0,   0.00
     33000-34000     :      7384,   0.74     20251,   2.03         0,   0.00         0,   0.00
     34000-35000     :      7344,   0.73     24507,   2.45         0,   0.00         0,   0.00
     35000-36000     :      7102,   0.71     25075,   2.51         0,   0.00         0,   0.00
     36000-37000     :      7410,   0.74     20806,   2.08         0,   0.00         0,   0.00
     37000-38000     :      6859,   0.69     20076,   2.01         0,   0.00         0,   0.00
     38000-39000     :      8054,   0.81     23748,   2.37         0,   0.00         0,   0.00
     39000-40000     :      8162,   0.82     23549,   2.35         0,   0.00         0,   0.00
     40000-41000     :      8498,   0.85     23435,   2.34         0,   0.00         0,   0.00
     41000-42000     :      7084,   0.71     24645,   2.46         0,   0.00         0,   0.00
     42000-43000     :      7875,   0.79     23902,   2.39         0,   0.00         0,   0.00
     43000-44000     :      8231,   0.82     23827,   2.38         0,   0.00         0,   0.00
     44000-45000     :      7277,   0.73     24962,   2.50         0,   0.00         0,   0.00
     45000-46000     :      8813,   0.88     23418,   2.34         0,   0.00         0,   0.00
     46000-47000     :      8406,   0.84     23715,   2.37         0,   0.00         0,   0.00
     47000-48000     :      7760,   0.78     24264,   2.43         0,   0.00         0,   0.00
     48000-49000     :      7809,   0.78     24225,   2.42         0,   0.00         0,   0.00
     49000-50000     :      7500,   0.75     24629,   2.46         0,   0.00         0,   0.00
     50000-51000     :      4345,   0.43     18141,   1.81         0,   0.00         0,   0.00
     51000-52000     :      4419,   0.44     14786,   1.48         0,   0.00         0,   0.00
     52000-53000     :      7541,   0.75     24665,   2.47         0,   0.00         0,   0.00
     53000-54000     :      8281,   0.83     24206,   2.42         0,   0.00         0,   0.00
     54000-55000     :      7281,   0.73     24835,   2.48         0,   0.00         0,   0.00
     55000-56000     :      5326,   0.53     16007,   1.60         0,   0.00         0,   0.00
     56000-57000     :      8020,   0.80     24211,   2.42         0,   0.00         0,   0.00
     57000-58000     :      7444,   0.74     24137,   2.41         0,   0.00         0,   0.00
     58000-59000     :      7492,   0.75     24215,   2.42         0,   0.00         0,   0.00
     59000-60000     :      6815,   0.68     25104,   2.51         0,   0.00         0,   0.00
     60000-61000     :      7578,   0.76     24402,   2.44         0,   0.00         0,   0.00
     61000-62000     :      7945,   0.79     24359,   2.44         0,   0.00         0,   0.00
     62000-63000     :      8383,   0.84     23875,   2.39         0,   0.00         0,   0.00
     63000-64000     :      7278,   0.73     25051,   2.51         0,   0.00         0,   0.00
     64000-65000     :      7780,   0.78     24382,   2.44         0,   0.00         0,   0.00
     65000-66000     :      7693,   0.77     24573,   2.46         0,   0.00         0,   0.00
     66000-67000     :      7902,   0.79     24110,   2.41         0,   0.00         0,   0.00
     67000-68000     :      6296,   0.63     25515,   2.55         0,   0.00         0,   0.00
     68000-69000     :      7720,   0.77     24453,   2.45         0,   0.00         0,   0.00
     69000-70000     :      7076,   0.71     24956,   2.50         0,   0.00         0,   0.00
     70000-71000     :      6573,   0.66     25116,   2.51         0,   0.00         0,   0.00
     71000-72000     :      6968,   0.70     25179,   2.52         0,   0.00         0,   0.00
     72000-73000     :      7793,   0.78     23799,   2.38         0,   0.00         0,   0.00
     73000-74000     :      7152,   0.72     25190,   2.52         0,   0.00         0,   0.00
     74000-75000     :      7682,   0.77     24033,   2.40         0,   0.00         0,   0.00
     75000-76000     :      8510,   0.85     23872,   2.39         0,   0.00         0,   0.00
     76000-77000     :      7553,   0.76     24700,   2.47         0,   0.00         0,   0.00
     77000-78000     :      4181,   0.42     13886,   1.39         0,   0.00         0,   0.00
     78000-79000     :      1112,   0.11      5760,   0.58         0,   0.00         0,   0.00
     79000-80000     :      4576,   0.46     15958,   1.60         0,   0.00         0,   0.00
     80000-81000     :      8222,   0.82     23496,   2.35         0,   0.00         0,   0.00
     81000-82000     :      7125,   0.71     25073,   2.51         0,   0.00         0,   0.00
     82000-83000     :      8286,   0.83     23772,   2.38         0,   0.00         0,   0.00
     83000-84000     :      8175,   0.82     24008,   2.40         0,   0.00         0,   0.00
     84000-85000     :      7065,   0.71     24985,   2.50         0,   0.00         0,   0.00
     85000-86000     :      3701,   0.37     11116,   1.11         0,   0.00         0,   0.00
     86000-87000     :      1176,   0.12      5901,   0.59         0,   0.00         0,   0.00
     87000-88000     :      1150,   0.12      5768,   0.58         0,   0.00         0,   0.00
     88000-89000     :      5381,   0.54     18668,   1.87         0,   0.00         0,   0.00
     89000-90000     :      8016,   0.80     24078,   2.41         0,   0.00         0,   0.00
     90000-91000     :      8394,   0.84     23380,   2.34         0,   0.00         0,   0.00
     91000-92000     :      7647,   0.76     24725,   2.47         0,   0.00         0,   0.00
     92000-93000     :      8951,   0.90     22875,   2.29         0,   0.00         0,   0.00
     93000-94000     :      8094,   0.81     23933,   2.39         0,   0.00         0,   0.00
     94000-95000     :      8032,   0.80     23974,   2.40         0,   0.00         0,   0.00
     95000-96000     :      7913,   0.79     24174,   2.42         0,   0.00         0,   0.00
     96000-97000     :      8082,   0.81     23961,   2.40         0,   0.00         0,   0.00
     97000-98000     :      8135,   0.81     23644,   2.36         0,   0.00         0,   0.00
     98000-99000     :      8235,   0.82     23417,   2.34         0,   0.00         0,   0.00
     99000-100000    :      7242,   0.72     24588,   2.46         0,   0.00         0,   0.00
    100000-101000    :      7129,   0.71     24701,   2.47         0,   0.00         0,   0.00
    101000-102000    :      7736,   0.77     24464,   2.45         0,   0.00         0,   0.00
    102000-103000    :      7761,   0.78     24180,   2.42         0,   0.00         0,   0.00
    103000-104000    :      7440,   0.74     24249,   2.42         0,   0.00         0,   0.00
    104000-105000    :      7945,   0.79     24265,   2.43         0,   0.00         0,   0.00
    105000-106000    :      7660,   0.77     24351,   2.44         0,   0.00         0,   0.00
    106000-107000    :      7620,   0.76     24156,   2.42         0,   0.00         0,   0.00
    107000-108000    :      8110,   0.81     23775,   2.38         0,   0.00         0,   0.00
    108000-109000    :      6682,   0.67     25598,   2.56         0,   0.00         0,   0.00
    109000-110000    :      8224,   0.82     23818,   2.38         0,   0.00         0,   0.00
    110000-111000    :      7498,   0.75     24359,   2.44         0,   0.00         0,   0.00
    111000-112000    :      7348,   0.73     24454,   2.45         0,   0.00         0,   0.00
    112000-113000    :      7627,   0.76     23991,   2.40         0,   0.00         0,   0.00
    113000-114000    :      7002,   0.70     25036,   2.50         0,   0.00         0,   0.00
    114000-115000    :      4010,   0.40     13236,   1.32         0,   0.00         0,   0.00
    115000-116000    :      7492,   0.75     24423,   2.44         0,   0.00         0,   0.00
    116000-117000    :      6729,   0.67     19974,   2.00         0,   0.00         0,   0.00
    117000-118000    :      1652,   0.17      5518,   0.55         0,   0.00         0,   0.00
    118000-119000    :      3913,   0.39     13262,   1.33         0,   0.00         0,   0.00
    119000-120000    :      7343,   0.73     24287,   2.43         0,   0.00         0,   0.00
    120000-121000    :      9237,   0.92     22632,   2.26         0,   0.00         0,   0.00
    121000-122000    :      7654,   0.77     23869,   2.39         0,   0.00         0,   0.00
    122000-123000    :      7447,   0.74     24081,   2.41         0,   0.00         0,   0.00
    123000-124000    :      8176,   0.82     23816,   2.38         0,   0.00         0,   0.00
    124000-125000    :      8414,   0.84     23574,   2.36         0,   0.00         0,   0.00
    125000-126000    :      6666,   0.67     25508,   2.55         0,   0.00         0,   0.00
    126000-127000    :      7907,   0.79     23836,   2.38         0,   0.00         0,   0.00
    127000-128000    :      7492,   0.75     24483,   2.45         0,   0.00         0,   0.00
    128000-129000    :      8151,   0.82     24046,   2.40         0,   0.00         0,   0.00
    129000-130000    :      7515,   0.75     24072,   2.41         0,   0.00         0,   0.00
    130000-131000    :      7985,   0.80     23747,   2.37         0,   0.00         0,   0.00
    131000-132000    :      7902,   0.79     24068,   2.41         0,   0.00         0,   0.00
    132000-133000    :      7844,   0.78     24256,   2.43         0,   0.00         0,   0.00
    133000-134000    :      8436,   0.84     23440,   2.34         0,   0.00         0,   0.00
    134000-135000    :      8812,   0.88     23074,   2.31         0,   0.00         0,   0.00
    135000-136000    :      7491,   0.75     24395,   2.44         0,   0.00         0,   0.00
    136000-137000    :      8352,   0.84     23307,   2.33         0,   0.00         0,   0.00
    137000-138000    :     10661,   1.07     20147,   2.01         0,   0.00         0,   0.00
    138000-139000    :     10854,   1.09     18237,   1.82         0,   0.00         0,   0.00
    139000-140000    :      7961,   0.80     24263,   2.43         0,   0.00         0,   0.00
    140000-141000    :      8020,   0.80     23825,   2.38         0,   0.00         0,   0.00
    141000-142000    :      8791,   0.88     23007,   2.30         0,   0.00         0,   0.00
    142000-143000    :      8019,   0.80     23742,   2.37         0,   0.00         0,   0.00
    143000-144000    :      9656,   0.97     23671,   2.37         0,   0.00         0,   0.00
    144000-145000    :      8028,   0.80     23552,   2.36         0,   0.00         0,   0.00
    145000-146000    :      7646,   0.76     23440,   2.34         0,   0.00         0,   0.00
    146000-147000    :      8170,   0.82     23368,   2.34         0,   0.00         0,   0.00
    147000-148000    :      7663,   0.77     24098,   2.41         0,   0.00         0,   0.00
    148000-149000    :      7211,   0.72     24677,   2.47         0,   0.00         0,   0.00
    149000-150000    :      6903,   0.69     24693,   2.47         0,   0.00         0,   0.00
    150000-151000    :      8635,   0.86     23420,   2.34         0,   0.00         0,   0.00
    151000-152000    :      7356,   0.74     24169,   2.42         0,   0.00         0,   0.00
    152000-153000    :      7363,   0.74     23948,   2.39         0,   0.00         0,   0.00
    153000-154000    :      8346,   0.83     23373,   2.34         0,   0.00         0,   0.00
    154000-155000    :      6791,   0.68     24708,   2.47         0,   0.00         0,   0.00
    155000-156000    :      7777,   0.78     24258,   2.43         0,   0.00         0,   0.00
    156000-157000    :      6949,   0.69     24814,   2.48         0,   0.00         0,   0.00
    157000-158000    :      9846,   0.98     21933,   2.19         0,   0.00         0,   0.00
    158000-159000    :      8448,   0.84     23346,   2.33         0,   0.00         0,   0.00
    159000-160000    :      8501,   0.85     23313,   2.33         0,   0.00         0,   0.00
    160000-161000    :      8121,   0.81     23875,   2.39         0,   0.00         0,   0.00
    161000-162000    :      8731,   0.87     22884,   2.29         0,   0.00         0,   0.00
    162000-163000    :      8302,   0.83     23588,   2.36         0,   0.00         0,   0.00
    163000-164000    :      8242,   0.82     23530,   2.35         0,   0.00         0,   0.00
    164000-165000    :      7905,   0.79     23937,   2.39         0,   0.00         0,   0.00
    165000-166000    :      7315,   0.73     24720,   2.47         0,   0.00         0,   0.00
    166000-167000    :      7664,   0.77     24661,   2.47         0,   0.00         0,   0.00
    167000-168000    :      7875,   0.79     24031,   2.40         0,   0.00         0,   0.00
    168000-169000    :      7817,   0.78     24251,   2.43         0,   0.00         0,   0.00
    169000-170000    :      7831,   0.78     23887,   2.39         0,   0.00         0,   0.00
    170000-171000    :      9160,   0.92     22427,   2.24         0,   0.00         0,   0.00
    171000-172000    :      7924,   0.79     23688,   2.37         0,   0.00         0,   0.00
    172000-173000    :      7288,   0.73     24269,   2.43         0,   0.00         0,   0.00
    173000-174000    :      7837,   0.78     24167,   2.42         0,   0.00         0,   0.00
    174000-175000    :      7543,   0.75     24075,   2.41         0,   0.00         0,   0.00
    175000-176000    :      7707,   0.77     23936,   2.39         0,   0.00         0,   0.00
    176000-177000    :      9141,   0.91     22774,   2.28         0,   0.00         0,   0.00
    177000-178000    :      8216,   0.82     23910,   2.39         0,   0.00         0,   0.00
    178000-179000    :      8059,   0.81     23864,   2.39         0,   0.00         0,   0.00
    179000-180000    :      7948,   0.79     23958,   2.40         0,   0.00         0,   0.00
    180000-181000    :      8429,   0.84     20387,   2.04         0,   0.00         0,   0.00
    181000-181649    :      6535,   1.01     12034,   1.85         0,   0.00         0,   0.00




Distribution of number of 2000 ms intervals w.r.t. DPC/ISR usage:


                                      CPU 0                      CPU 1                      CPU 2                      CPU 3
 DPC/ISR Usage %      DPC      ISR Combined      DPC      ISR Combined      DPC      ISR Combined      DPC      ISR Combined
>=  0 AND <=   1        2       91        1        0        1        0       91       91       91       91       91       91
>   1 AND <=   5       89        0       90        0       90        0        0        0        0        0        0        0
>   5 AND <=  10        0        0        0       62        0        2        0        0        0        0        0        0
>  10 AND <=  20        0        0        0       29        0       89        0        0        0        0        0        0
>  20 AND <=  40        0        0        0        0        0        0        0        0        0        0        0        0
>  40 AND <=  60        0        0        0        0        0        0        0        0        0        0        0        0
>  60 AND <=  80        0        0        0        0        0        0        0        0        0        0        0        0
>  80 AND <= 100        0        0        0        0        0        0        0        0        0        0        0        0
---
Total:                 91       91       91       91       91       91       91       91       91       91       91       91

View attachment 1MS_SERATO-LAPTOP-dpcisr-report.txt View attachment 1MS_SERATO-LAPTOP-dpcisr-report.txt View attachment 1MS_SERATO-LAPTOP-dpcisr-report.txt

TomasD · Oct 29, 2014

Dear,

To properly troubleshoot issues with high/frequent DPCs/IRPs, we require a XPERF trace. Please follow these steps to generate one:

Download Windows Software Development Kit (SDK) for Windows and run the setup.
Select Windows Performance Toolkit feature (all the others can be unchecked) and proceed with the download/installation.
Once the installation finishes, open an elevated Command Prompt by right-clicking on CMD.EXE shortcut in your start menu and selecting Run As Administrator from the context menu.
Type the following command, which will start tracing, in the Command Prompt window you just opened:
Code:
```
xperf -on PROC_THREAD+LOADER+PROFILE+INTERRUPT+DPC+DRIVERS+POWER+IDLE_STATES -stackwalk Profile -BufferSize 1024 -MinBuffers 256 -MaxBuffers 256 -MaxFile 256 -FileMode Circular
```
If you see a yellow warning "xperf: warning: This system is not fully configured for x64 stack tracing" after running the above command, please complete these extra steps (otherwise, proceed to the step #5):
Read More:
1. Run the following command which will stop the tracing:
  
  Code:
  
  xperf -stop
2. Run the following command to enable stack tracing (by disabling Paging Executive):
  
  Code:
  
  REG ADD "HKLM\System\CurrentControlSet\Control\Session Manager\Memory Management" -v DisablePagingExecutive -d 0x1 -t REG_DWORD -f
3. Reboot the computer
4. Once computer reboots, proceed from the step #3
If you see a red error "xperf: error: NT Kernel Logger: A device attached to the system is not functioning. (0x1f)" after running the above command, please complete these extra steps (otherwise, proceed to the step #5):
Read More:
1. Run the following command to disable Driver Verifier, which causes the above error:
  
  Code:
  
  verifier /reset
2. Reboot the computer
3. Once computer reboots, proceed from the step #3
If you see a red error "xperf: error: NT Kernel Logger: Cannot create a file when that file already exists. (0xb7)", please do the following (otherwise, proceed to the step #5):
Read More:
Make sure you do not have any programs that capture ETW data already running. Some examples of these are:
- Process Explorer
- Process Hacker
- Resource Monitor
- Process Monitor
- Latency Monitor
- Another instance of XPERF or WPR
Perform some activities with your computer for few minutes, making sure the issues you reported are reproduced.
Run the following command, which will stop the tracing, in the command prompt window you already have opened:
Code:
```
xperf -stop -d C:\CPU.etl
```
Compress file C:\CPU.etl
Upload the compressed file to a file sharing service (e.g. OneDrive or DropBox).
Share the download link here.

Thank you.

Shamir82 · Oct 29, 2014

Thanks for the detailed instructions. I did everything that you said and here's the link: https://www.dropbox.com/s/47utaad9deowh5m/CPU.rar?dl=0

TomasD · Oct 29, 2014

Shamir82 said:
Thanks for the detailed instructions. I did everything that you said and here's the link: https://www.dropbox.com/s/47utaad9deowh5m/CPU.rar?dl=0

Do you think you could try again, as the archive seems to be corrupted:

Code:

---------------------------
7-Zip
---------------------------
Can not open file 'C:\CPU.rar' as archive
---------------------------
OK   
---------------------------

Shamir82 · Oct 29, 2014

Ok, just a moment

Shamir82 · Oct 29, 2014

I just repacked and reuploaded the file, hope it's fine this time.

https://dl.dropboxusercontent.com/u/91255239/CPU.rar

TomasD · Oct 29, 2014

Shamir82 said:
I just repacked and reuploaded the file, hope it's fine this time.

https://dl.dropboxusercontent.com/u/91255239/CPU.rar

Thanks.

Latency issues while using external sound cards/MIDI controllers are quite common and they are also quite difficult to troubleshoot. I cannot point to the exact cause, but there are few tips:

Try using different USB ports
Try upgrading RANE ASIO Audio Driver
Upgrade drivers/firmware for your external audio devices
Read the forums for the devices you use

Shamir82 · Oct 29, 2014

I tried all the above . changed the USB ports and upgraded to the newest drivers.
The problems only occur when I do something else then directly using the software. For example, adding new files.
With latencymon I got the result, that wdf01000.sys seems to be the causing these issues.

TomasD · Oct 29, 2014

Shamir82 said:
I tried all the above . changed the USB ports and upgraded to the newest drivers.
The problems only occur when I do something else then directly using the software. For example, adding new files.
With latencymon I got the result, that wdf01000.sys seems to be the causing these issues.

What if you remove RANE ASIO Audio Driver completely?

Shamir82 · Oct 29, 2014

Then I can't use the software and the external audio card. What exactly is the wdf01000.sys?

Jared · Oct 29, 2014

wdf01000.sys is the Windows Kernel mode Driver Framework.
It's used to support Kernel drivers for Windows 2000 and later versions; all drivers developed for the Windows Driver Foundation are supported by KMDF.
The Windows Driver Framework is separated into two sections, Kernel Mode Driver Framework and User Mode Driver Framework, each used to support the implementation of device drivers into Windows.

With all this said, it seems like some 3rd party driver is causing the latency problem but trying to identify it can be time consuming.
I just wanted to answer your question, I'll leave the rest with Tomas.

Regards,

Jared

TomasD · Oct 29, 2014

Shamir82 said:
Then I can't use the software and the external audio card

What is the device (external audio card) you have?

Shamir82 · Oct 29, 2014

It's A Rane SL 3 and the software is Serato DJ.
I just removed most of the device drivers from the hp website i had on my laptop and used the ones provided by the manufacturers where it was possible, intel especially.
I made a new CPU.etl with the xperf command.
Here'S the new link: https://dl.dropboxusercontent.com/u/91255239/CPU2.rar

TomasD · Oct 30, 2014

Shamir82 said:
It's A Rane SL 3 and the software is Serato DJ.
I just removed most of the device drivers from the hp website i had on my laptop and used the ones provided by the manufacturers where it was possible, intel especially.
I made a new CPU.etl with the xperf command.
Here'S the new link: https://dl.dropboxusercontent.com/u/91255239/CPU2.rar

It still seems to be related to strmdrv.sys, which is a RANE ASIO driver, so, once again:

Does SL 3 have the latest firmware?
What is the version of the driver? Is it really the latest?
Have you tried using ASIO the driver from SERATO?
Have you tried changing ASIO settings?
Would ASIO4ALL driver work?

Shamir82 · Oct 30, 2014

My SL 3 has the latest available firmware,
I dowloaded the beta version because it has newer drivers, to get the newest available drivers,
the serato driver won't work with the software serato dj, just with a different software called scratch live
i got a driver panel for the SL 3 can I change the ASIO settings in there?
ASIO4ALL didn't work. :-(

TomasD · Oct 30, 2014

Shamir82 said:
My SL 3 has the latest available firmware,
<...>
i got a driver panel for the SL 3 can I change the ASIO settings in there?

What kind of settings are there?

Shamir82 · Oct 30, 2014

Switch the input and output types, the usb buffer settings and to update the firmware (but that's greyed out)

TomasD · Oct 30, 2014

Shamir82 said:
Switch the input and output types, the usb buffer settings and to update the firmware (but that's greyed out)

Tried changing buffer settings?

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DPC Latency Problems / Audio Glitches

Shamir82

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TomasD

Sysnative Staff, BSOD Kernel Dump Senior Analyst

Shamir82

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TomasD

Sysnative Staff, BSOD Kernel Dump Senior Analyst

Shamir82

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Shamir82

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TomasD

Sysnative Staff, BSOD Kernel Dump Senior Analyst

Shamir82

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TomasD

Sysnative Staff, BSOD Kernel Dump Senior Analyst

Shamir82

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Jared

Sysnative Staff, BSOD Kernel Dump Expert

TomasD

Sysnative Staff, BSOD Kernel Dump Senior Analyst

Shamir82

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TomasD

Sysnative Staff, BSOD Kernel Dump Senior Analyst

Shamir82

Member

TomasD

Sysnative Staff, BSOD Kernel Dump Senior Analyst

Shamir82

Member

TomasD

Sysnative Staff, BSOD Kernel Dump Senior Analyst