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MagicAndre1981

How to get the cause of high CPU usage caused by apps?

206 posts in this topic

Run this command:


xperf -on latency -stackwalk profile -buffersize 1024 -MaxFile 256 -FileMode Circular && timeout 30 && xperf -d DPC_Interrupt.etl

to capture 30s. If you still get the warning, increase the value after buffersize.

The pictures tell you have ACPI.sys issue . What is the temperature of your Intel® Core i5-2430M CPU?

When I boot my comp and I don't have the high CPU usage issue It's around 40 when idle.

Right now when It's supposed to be idle but CPU 0 is at 90% It's at 70 degrees, but thats just because I'm keeping my room like a fridge atm. Otherwise it can go up to 90c.

http://www.mediafire.com/?jzzr62p4be76a5f

Here is my zipped DPC_Interrupt.etl.

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you have a temperature issue. The CPU seams to throttle to prevent overheating. Set the cooler policy to active (power options), clean the CPU cooler and install the latest BIOS/UEFI.

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you have a temperature issue. The CPU seams to throttle to prevent overheating. Set the cooler policy to active (power options), clean the CPU cooler and install the latest BIOS/UEFI.

To me it seems more like overheating is the symptom, not the cause.

Since it can stay perfectly cool(around 35-40c) idle for hours, and return to normal temperatures after gaming.

This overheating only occurs when the CPU gets stuck at 90% load which doesn't always happen after I play games.

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HI, Am an averge computer "geek". My laptop a Dell Vostro 3550 started freezing some weeks back. I tried to follow the instructions given on this forum/topic but after download of symbols i seem to get lost on what to next. Am using WPA ver 6.2.92 to do the analysis and it does not seem to have the same settings as the one used on this forum. Can anyone help! It has taken me five minutes to do this small write up due to the freezing......

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zip the file to reduce the size and upload it to your dropbox or SkyDrive account and post a link here.

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The ip Helper service seems to cause it:

post-70718-0-36018000-1357676518_thumb.p

If you don't need IPv6 over IPv4, stop the service.

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I have disabled IPv6 on the wireless network connection using network sharing menus and also through regedit using instructions given on this site Disable IPv6 for Win 7 as i didnt know how uninstall it. However the problem still persists :wacko:

However i have realised that the freezing occurs only when connected to our office wireless network!! If am not connected or if connect using any other wireless network (hotspots for instance), or through my phone the laptop works just fine. Our office connections to the server is through wireless infrastructure and no other computer is experiencing this problem...

I have downloaded to skydrive an updated WPR file as still cant figure out how to use it :blushing:Skydrive 2

p.s. i had to disconnect the wireless to enable me zip file fast enough..

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Have you stopped the IP Helper Service?

This time you have DPC issues cause by the wireless network driver (athrx.sys). Update this driver.

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Thanks Andre for prompt analysis and response. I cant seem to be able to get an updated driver anywhere.

Currently the (Dell Wireless Adapter 1702.802.11b/g/n) is on version 9.2.0.412 of 21/04/2011. Using update driver am informed its the latest though seen somewhere on the net (Pitstop)that there is a new version 9.2.0.496 of 21/03/2012???

Please help..By the way IP Help Service is disabled.

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Hi..Sorry but am at end wits!!

I have down loaded the "latest" driver software for the device but even through manual (i.e. control panel>device manager>properties>update driver software>browse my computer for updated drivers) still returns the message that windows has determined that the driver software is up to date!

The current version is 9.2.0.412 whileas the latest driver per Atheros website is 10.0.0.221 for PCI\VEN_168C&DEV_002B&SUBSYS_0205168C Atheros AR9285 802.11b/g/n WiFi Adapter device. downloaded from Atheros..Of course i had unzipped the files first.

What can i do next???

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Sorry Andre, but that is exactly what i had been doing to avail!

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@Kabiaru, If at all possible, please post a video screen capture showing exactly what you are doing. I'm sure that Andre will be able to spot what you are doing wrong.

Cheers and Regards

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Select "let me pick" and select the driver.

If this also fails, run psr.exe (Problem Step Recorder) and record all steps you do and upload the generated file.

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Hi Andre, I decided to force an "update" actually by "changing" the device and choose the option to allow me pick the device drivers manually (of course not recommended). I installed the Atheros's AR9285 drivers which the effect of removing the device "Dell Wireless 1702.811b/n/g. I now have Atheros AR9285 Wireless Adapter which has been working fine since! No Freeze ups so far and performance has been good!

Thanks a lot for your patience and diligence. I hope it will continue working fine.

:thumbup

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Thanks a lot for your patience and diligence

:thumbup

You're welcome :)

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Hello,

After reading these forums and other sites, this seems to be the place to go.

Andre, the necessary files are in the following locations, I PM'd you the password for the .7z files.

http://www14.zippyshare.com/v/69358653/file.html

The 7z files are password protected, if you would also like to take a look at them, please PM me and I will be more than happy to give you the password.

Thanks,

Austin

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ok, traces 33CPU3GigMem.etl, ExplorerHighCPU1 and Explorer High CPU 2.etl show a high CPU usage and here the Explorer is using the windows Search and this causes the high CPU usage. Your HDD is also busy so I assume you search for the MP3 files on drive E:

Is this correct?

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My RAID is being rebuilt during some of those captures, so the majority of HDD usage is due to that. I am not searching for anything in particular and have Windows Search disabled to prevent indexing.

I will say, at one point while I was using Procexp, I noticed mp3 files would show up in the handles section and then disappear. I am no longer noticing that and cannot pinpoint what is doing the seeking.

Austin

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UPDATE: I removed the Windows Search feature from Add/Remove and will update you as to whether or not I am still seeing the issue with Explorer CPU and memory usage.

Austin

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UPDATE 2: After a while of Explorer.exe not eating CPU and Memory after MS Search was uninstalled, everything continued to perform as normal. I re-installed search, along with setting everything back to default (Using RegKey SetupCompletedSucessfully), Explorer.exe started to act up again, this is with indexing disabled, so I am still quite confused. You have successfully narrowed it down to the search module, just not sure what is causing that to go wild with memory and CPU.

Any suggestions? Also, should I move this to another thread?

Austin

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make a new trace. I personally don't use the the Windows search. I only use 3rd party tools.

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