Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: What is item Unknown(0x0) in xperf disk io?

18 Dec 2012   #1

Windows 7 Enterprise, 64bit
 
 
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 System SpecsSystem Spec
.

18 Dec 2012   #2

Windows 7 32 bit
 
 

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

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 System SpecsSystem Spec
19 Dec 2012   #3

Windows 7 32 bit
 
 

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 System SpecsSystem Spec
.


Reply

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




Thread Tools



Similar help and support threads for2: What is item Unknown(0x0) in xperf disk io?
Thread Forum
Disk 1 Unknown, Not Initialized Hardware & Devices
Windows Recovery disk shows operating system: Unknown on (Unknown) BSOD Help and Support
Disk check: all passed bar last item. Performance & Maintenance
xperf disk io graph about flushes item Performance & Maintenance
unknown local disk Q General Discussion
XPerf Software
Hard disk Icons -- Sahred Disks confusing with Padlock Item General Discussion

Our Sites

Site Links

About Us

Find 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 08:39 AM.
Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App
  

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33