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High CPU usage from ndis.sys. RRS feed

  • Question

  • Hi,

    Would really appreciate any help here am making music on an acer aspire 5740 laptop which used to be fine but has been playing up recently with clicks and pops. I have just replaced the hard drive an SSD which has made it significantly faster but not helped the clicks and pops. Have been using LatencyMon and here are my findings.

    Once again any help would be much appreciated.

    _________________________________________________________________________________________________________
    CONCLUSION
    _________________________________________________________________________________________________________
    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 problem may be related to power management, disable CPU throttling settings in Control Panel and BIOS setup. Check for BIOS updates.
    LatencyMon has been analyzing your system for  0:00:08  (h:mm:ss) on all processors.


    _________________________________________________________________________________________________________
    SYSTEM INFORMATION
    _________________________________________________________________________________________________________
    Computer name:                                        TIMHORNE-PC
    OS version:                                           Windows 7 Service Pack 1, 6.1, build: 7601 (x64)
    Hardware:                                             Aspire 5740                    , Acer           
    CPU:                                                  GenuineIntel Intel(R) Core(TM) i3 CPU M 330 @ 2.13GHz
    Logical processors:                                   4
    Processor groups:                                     1
    RAM:                                                  2804 MB total


    _________________________________________________________________________________________________________
    CPU SPEED
    _________________________________________________________________________________________________________
    Reported CPU speed:                                   2127.0 MHz
    Measured CPU speed:                                   2339.0 MHz (approx.)

    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.


    _________________________________________________________________________________________________________
    MEASURED INTERRUPT TO USER PROCESS LATENCIES
    _________________________________________________________________________________________________________
    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.

    Highest measured interrupt to process latency (µs):   8895.856973
    Average measured interrupt to process latency (µs):   7.892332

    Highest measured interrupt to DPC latency (µs):       95.763039
    Average measured interrupt to DPC latency (µs):       1.086827


    _________________________________________________________________________________________________________
    MEASURED SMI, IPI AND CPU STALLS
    _________________________________________________________________________________________________________
    The SMI, IPI and CPU stalls value represents the highest measured interval that a CPU did not respond while having its maskable interrupts disabled.

    Highest measured SMI or CPU stall (µs)                4.812213


    _________________________________________________________________________________________________________
     REPORTED ISRs
    _________________________________________________________________________________________________________
    Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.

    Highest ISR routine execution time (µs):              68.088387
    Driver with highest ISR routine execution time:       ndis.sys - NDIS 6.20 driver, Microsoft Corporation

    Highest reported total ISR routine time (%):          0.108586
    Driver with highest ISR total time:                   i8042prt.sys - i8042 Port Driver, Microsoft Corporation

    Total time spent in ISRs (%)                          0.309354

    ISR count (execution time <250 µs):                   23021
    ISR count (execution time 250-500 µs):                0
    ISR count (execution time 500-999 µs):                0
    ISR count (execution time 1000-1999 µs):              0
    ISR count (execution time 2000-3999 µs):              0
    ISR count (execution time >=4000 µs):                 0


    _________________________________________________________________________________________________________
    REPORTED DPCs
    _________________________________________________________________________________________________________
    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.

    Highest DPC routine execution time (µs):              270.467325
    Driver with highest DPC routine execution time:       ndis.sys - NDIS 6.20 driver, Microsoft Corporation

    Highest reported total DPC routine time (%):          1.092070
    Driver with highest DPC total execution time:         USBPORT.SYS - USB 1.1 & 2.0 Port Driver, Microsoft Corporation

    Total time spent in DPCs (%)                          1.901507

    DPC count (execution time <250 µs):                   97369
    DPC count (execution time 250-500 µs):                0
    DPC count (execution time 500-999 µs):                1
    DPC count (execution time 1000-1999 µs):              0
    DPC count (execution time 2000-3999 µs):              0
    DPC count (execution time >=4000 µs):                 0


    _________________________________________________________________________________________________________
     REPORTED HARD PAGEFAULTS
    _________________________________________________________________________________________________________
    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.

    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.

    Process with highest pagefault count:                 svchost.exe

    Total number of hard pagefaults                       227
    Hard pagefault count of hardest hit process:          59
    Highest hard pagefault resolution time (µs):          150338.431594
    Total time spent in hard pagefaults (%):              1.77760
    Number of processes hit:                              15


    _________________________________________________________________________________________________________
     PER CPU DATA
    _________________________________________________________________________________________________________
    CPU 0 Interrupt cycle time (s):                       0.310233
    CPU 0 ISR highest execution time (µs):                46.931829
    CPU 0 ISR total execution time (s):                   0.038275
    CPU 0 ISR count:                                      12003
    CPU 0 DPC highest execution time (µs):                212.035261
    CPU 0 DPC total execution time (s):                   0.206978
    CPU 0 DPC count:                                      56253
    _________________________________________________________________________________________________________
    CPU 1 Interrupt cycle time (s):                       0.372669
    CPU 1 ISR highest execution time (µs):                68.088387
    CPU 1 ISR total execution time (s):                   0.023090
    CPU 1 ISR count:                                      3726
    CPU 1 DPC highest execution time (µs):                151.593794
    CPU 1 DPC total execution time (s):                   0.146109
    CPU 1 DPC count:                                      13881
    _________________________________________________________________________________________________________
    CPU 2 Interrupt cycle time (s):                       0.205076
    CPU 2 ISR highest execution time (µs):                45.507757
    CPU 2 ISR total execution time (s):                   0.020740
    CPU 2 ISR count:                                      3855
    CPU 2 DPC highest execution time (µs):                270.467325
    CPU 2 DPC total execution time (s):                   0.135859
    CPU 2 DPC count:                                      14608
    _________________________________________________________________________________________________________
    CPU 3 Interrupt cycle time (s):                       0.219790
    CPU 3 ISR highest execution time (µs):                66.282558
    CPU 3 ISR total execution time (s):                   0.019054
    CPU 3 ISR count:                                      3437
    CPU 3 DPC highest execution time (µs):                162.125059
    CPU 3 DPC total execution time (s):                   0.132847
    CPU 3 DPC count:                                      12628
    _________________________________________________________________________________________________________

    Thanks.

    Friday, February 20, 2015 2:23 PM

Answers

All replies

  • Hello Tim Horne,

    What do you mean about the sentence ‘playing up recently with clicks and pops’?

    About the high CPU usage issue, please open the task manager to see which process or program occupy a large number of system resource.

    From the information you provided, I see Process with highest pagefault count: svchost.exe.
    Please take a look at the following thread similar to this issue.
    http://answers.microsoft.com/en-us/windows/forum/windows_7-performance/abnormally-high-cpu-usage-from-svchostexe-solved/eb38d25d-6bb2-47cd-80f2-5389c62337be


    Best regards,
    Fangzhou CHEN


    Fangzhou CHEN
    TechNet Community Support

    • Proposed as answer by Karen Hu Monday, March 2, 2015 7:37 AM
    • Marked as answer by ZigZag3143x Monday, March 2, 2015 12:17 PM
    Saturday, February 21, 2015 8:25 AM
  • 1. I would recommend Performance monitor and follow troubleshooting procedures starting with masurement of queues length.

    2. For detailed analysis use Sysinternal tools (Process Monitor and Explorer)

    3. Your computer is using integrated graphics. This may influence the properties of your computer.

    4. When you install SSD, have you restore content of previous HDD or install vanilla plain operating system (which would I prefer). Have you changed settings in BIOS? (IDE v AHCI)

    5. It is a good practice to look into Event logs for errors and warnings and resolve problems. Similarly a look into Device Manager may reveal problem. Hope you are not using optional drivers from MS update.

    6. Aspire support/forum may reveal a model specific problem/troubles.

    7. You have named the only one change, the SSD replacement. However if you install application or changed configuration recently, it may influence the computer behaviour.

    HTH

    Milos


    • Edited by Milos Puchta Saturday, February 21, 2015 9:08 AM
    Saturday, February 21, 2015 9:06 AM