Hi guys,

My t420s sometimes gets really slow, and I would appreciate if you can help.

After upgraded to win 8, my t420s (2 cpus 4 cores) sometimes gets really slow (and hot).

If I check the task monitor, it is the system that uses about 30% of CPU. Though there is  still 70% CPU left, everything becomes really slow and non-responsive.

I collect some data and upload the etl file in the following links.

https://dl.dropboxusercontent.com/u/4716318/cpuusage_141231.zip

https://dl.dropboxusercontent.com/u/4716318/cpuusage_150102.zip

In the first one, we see the system usage shoots up for now reason at the last part of the test.

In the second file, I was running some Fortran code, called Ramsey_SteadyState.exe which reasonably takes some CPU, but system also takes a lot of CPU for the whole test.

Thanks for the help!

• Edited by badou517 Thursday, January 22, 2015 6:22 AM

Hi badou517,

The WPT result also shows the CPU usage is not so high to affect the performance. Mostly it is in Idle.

You may take a try to optimize the drive. The read/write process may slow down the performance.

Improve performance by optimizing your drive

Another thing is, please navigate to Control Panel\System and Security\System, then choose the Advanced System Settings.

Then under Performance, choose Settings, on the virtual effects tab, select the Adjust for best performance.

Then check issue again.

More reference: Performance & maintenance

Best regards

Badou

Your problem is Ramsey_steady_state.exe which is using 51% of your CPU.  Michael Shao read the trace where you were not having the problem.

Thanks for the reply!

You are right. It was idle for the first part of the time but then later cpu usage shoots up and takes a lot of CPU. Do you know why does this happen? Because the system is usually fine for quite a while, but sometimes suddenly system uses a lot of CPU for no reason, and it lasts very long. as you can see in the figure you showed

Thank you.

Ramsey_SteadyState.exe is the Fortran program that is running, and it takes some CPU as expected.

However, the problem is that at the same time, system takes a lot of CPU. And this also happens  if Ramsey_SteadyState.exe is not running.

Is there a way to analyze why system takes a lot of CPU?

Thanks!

BAdou517

Sure, run a trace when Ramsey is not running and upload it.

Thanks!

Here are the new etl files with high cpu and hard disk usage.

https://dl.dropboxusercontent.com/u/4716318/cpuusage_150124.zip

Would appreciate it if you can help me to find the problem.

• Edited by badou517 Saturday, January 24, 2015 4:30 PM

Badu

In both of these there is a definite problem.  System is using 21% on one process (PID 56 which indicates it is very early in the boot) but it is labeled unknown.  What malware app are you using (it looks avp.exe?).  I would also run a malwarebytes scan to eliminate that possibility.

Please download the free version of Malwarebytes. Update it immediately.
Do a full system scan
Let us know the results at the end.

http://www.malwarebytes.org/products

Does the problem exist when you run in safe mode with networking?  To be honest I suspect the fastest way to fix this is a clean install.  We can find out what PID 56 is by running WPR using the boot options. (save your data it will reboot 2-3 times)

Hi Team ZigZag,

Thanks for the suggestion!

I used to have Kaspersky. I also refresh install windows but the problem persists.

Now I uninstalled Kasperky and installed Malwarebytes and magically the problem disappeared!

Thanks again.

Badu

Thanks for letting us know.  IMHO Kaspersky is rubbish