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Windows 8.1 high CPU load

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40 replies to this topic

#1
insanecorp

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I'm on Windows 8.1 Enterprise right now.

And I having hight CPU load last 2 days by svchost.

How could I discover what exactly uses CPU?




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#2
MagicAndre1981

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install the WPT and run the xperf commands from this topic:

 

http://www.msfn.org/...howtopic=140264


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#3
insanecorp

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I didn't found 'CPU sampling per CPU' graph, but I found that Windows Driver Foundation service is handling about 30% permanently, and sometimes grows up to 60%.



#4
insanecorp

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I have uploaded collected xperf dump to db: https://dl.dropboxus...969/latency.etl

Maybe you could find something.



#5
MagicAndre1981

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the svchost.exe CPU usage comes from Superfetch.

 

But the main issue, is the sdclt.exe which is started and stopped very often. This is a know bug in 8.1. Open the task scheduler go to WindwosBackup and DISABLE the "ConfigNotitfication" Task

 

2kYhl.png


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#6
insanecorp

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Ok, I will disable this task, and also I'm thinking about disabling Superfetsh - my system is installed on Intel SSD and as I remember Intel recomended to disable Superfetch with their SSD, or I should not?

Another thing I'm thinking about: Windows Driver Foundation. That is what ProcessExplorer shows mostly all the time: http://take.ms/yz9RM

#7
helmutcheese

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That is a myth due to peeps claiming it can wear out a SSD.

 

System memory is still far faster than any SSD  and unused Memory is wasted so why not use it added to the fact caching only reads from the HDD/SSD not writes and SSD's do not wear from reads only writes.

 

Even the 1st DDR memory from 2001 is faster than 99% of  todays SSD's at 2100MB/s for DDR266 (PC2100).

 

Windows 7SP1 (AFAIR) onwards does not disable SuperFetch at install on detection of a SSD (or at least never did for me) I think before SP1 it did but never had a SDD then and I always install from a Win 7 SP1 image on my SSD.

 

Windows Driver Foundation uses my CPU a lot taking the CPU out of 1600MHZ idle mode up to 5GHZ.


Edited by helmutcheese, 18 December 2013 - 07:14 PM.


#8
MagicAndre1981

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disable the task and capture a new trace if you still have issues.


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#9
BlackShads

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Hi Andre!  Today I was playing a game via Steam, and suddenly my frame dropped to 10.  I opened up task manager, and sure enough, svchost.exe was eating up my RAM and CPU.  I clicked search online and came across the thread on Microsoft, clicked on your profile, and that directed me here.  Anywho, I followed the instructions and uploaded the highCPUUsage.etl to dropbox ( https://www.dropbox....highCPUUsage.7z ).  Upon restart, I opened up task manager again, and  svchost.exe was eating 100% of my disk as well.  Could you please help me resolve this?  Thanks!



#10
MagicAndre1981

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the trace is corrupted. Don't run other tools like ProcessExplorer, TaskManager, LatencyMon or Resource Monitor the same time.


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#11
BlackShads

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How about this one? https://www.dropbox....highCPUUsage.7z

It wasn't really using a ton of resources when I took this one, though.  It goes on and off like a light. :>

If you need, I'll take another when it is.


Edited by BlackShads, 22 January 2014 - 10:16 AM.


#12
MagicAndre1981

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this trace is fine. CPU is idle for 99%. Capture the trace when you have the issue.


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#13
lshv

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Please would you mind looking at my etl?  

Thanks a lot for your help!

https://drive.google...dit?usp=sharing



#14
MagicAndre1981

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you also have the sdclt.exe bug.


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#15
lshv

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Thanks a lot Andre, CPU down to 5% - fantastic you're a lifesaver.



#16
MagicAndre1981

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You're welcome :)


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#17
norafox

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Andre! Hi! Could you please help me too? I'm having the same problem. My file is here: ----

Thank you! Sorry to bother.

 

 

 

 

(edit: ah, but I was also running task manager at the same time. And now the problem isn't happening. Of course. Ugh.)

 

If the above file is corrupted, please try this one: ----


Edited by norafox, 01 February 2014 - 10:15 PM.


#18
MagicAndre1981

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the trace shows no high CPU usage.


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#19
norafox

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the trace shows no high CPU usage.

Oh.. I think I was mistaken. I think it was Disk Usage? It just makes everything run slow and lag. I bought more RAM and I'm waiting for it to come in, do you think that would solve my problem? Sorry about this and the late response.



#20
MagicAndre1981

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the high disk usage comes from Avast. Remove it and try a different AV suite.


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#21
stoertebekker

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Hallo André,

 

you are my last hope :-)
below is the link to my etl file (45 sec. recording with cpu usage checked in WPA while cpu usage was nearly 100%) which is now nearly all the time making my PC unusable.

 

Vielen Dank!

 

https://drive.google...dit?usp=sharing



#22
MagicAndre1981

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remove Symantec and look if this fies it. I see a high usage from IDSvia64.sys.


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#23
stoertebekker

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remove Symantec and look if this fies it. I see a high usage from IDSvia64.sys.

Dear André,

 

thank you so much,

I uninstalled Symantec Norton Internet Security as you suggested and worked with my PC for three days now (very suspicious if this "horror" is really over (I even hear the fan noise in sleep now even when my PC is shut down dead :-( psycho!

Now there was only once in a while a higher CPU usage (I can notice this when without reason the fan starts to run on my Lenovo Yoga Think Pad.) But below anything like 100% CPU usage and only for a few minutes or even seconds.

Today in idle state it came back: 100% CPU forever so I ran WPR again (there were some apps running so I hope my WPA file still gives some info what causes this 100% CPU usage again).

 

Thank you! (you are an "angel" for all of us who cannot work with their PCs anymore (I am a webworker and cannot sent this to Lenovo for 3 weeks ;-)

https://drive.google...dit?usp=sharing

 

Thank you for looking again!

 

Viele Grüße aus Köln



#24
MagicAndre1981

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the trace is corrupted. I see nothing useful. Don't use the ugly UI, use my xperf command!

 

Also please compress the ETL file pelase as 7z/RAR to reduce the size!!!!!!!!!!!!!!!!!!!!


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#25
stoertebekker

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Guten Morgen André,

sorry for wasting your expert time with such a file.

(I am no expert on anything like this high cpu "Wahnsinn" on my PC as you can see...)

 

I will google how the xperf command works and the next time my PC is on 100% CPU usage I will it AND compress the file before I'll upload it (ups, good idea!).

 

Vielen Dank so far!

Viel Glück morgen (Pokal)...







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