What is item Unknown(0x0) in xperf disk io?


  1. Posts : 1
    Windows 7 Enterprise, 64bit
       #1

    What is item Unknown(0x0) in xperf disk io?


    Hi,

    I'm trying to find out what the file Unknown (0x0) is in disk IO in xperf trace. Below is information about the io read type to unknown (0x0).

    My question is what is it? what is it used for? basic information and the reason it's value is usually greater than all the other files

    IO Type: Read
    Complete time: 25.506764217
    IO time: 3026.318
    disk service time: 744.603
    pri: 0x03
    QD/I: 1
    io size: 65536
    min offset : 0x000000138ca14000
    max offset: 0x000000138ca23fff
    process name: System
    process: System (4)
    thread id: 232
    path name: Unknown (0x0)
      My Computer


  2. Posts : 5,092
    Windows 7 32 bit
       #2

    =============================

    Welcome to Windows Seven Forums.

    To avoid a lot of Q & A about your hardware and OS configuration, please click on this link to
    Edit System Specs

    Filling this out, at least partially, will save a lot of time. Another advantage is when posting a new problem, the person answering can just click the My System Specs link in the bottom of your post. No need to search for the information.

    If you have multiple systems just indicate that in the System Specs so that we know why many of the fields are blank.
      My Computer


  3. Posts : 5,092
    Windows 7 32 bit
       #3

    Searching using these terms:
    xperf disk path name: Unknown (0x0)

    gets me a DOC file with some mumbo jumbo about path unknown is during system boot when the prefetcher is doing some yadda yadda. Anyway, it should be 3rd in the google results if you want to read it.
      My Computer


 

  Related Discussions
Our Sites
Site Links
About Us
Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd
All times are GMT -5. The time now is 00:06.
Find Us