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I'm seeing CPU growth on version 8.1.0.3002

Employee

I'm seeing CPU growth on version 8.1.0.3002

by bstern@us.ibm.com » Wed Jun 02, 2010 9:50 am

I am running the AT&T Network Client on my Windows 7 Ultimate 64-bit OS. I installed version 8.1.0.3002. I'm seeing a steady increase in process utilization for the netclient.exe process until it starts consuming 100% of one CPU core. This occurs after running for just a few hours.

I've been searching online and can't find anything that mentions CPU growth with version 8.1.0.3002.

any ideas?
*I am an AT&T employee, and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.
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Message 1 of 8
Employee

Re: I'm seeing CPU growth on version 8.1.0.3002

by obrion » Mon Jun 28, 2010 3:04 pm

Have not seen this before. Is this with the IBM beta kit?

Robert
*I am an AT&T employee, and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.
Message 2 of 8
Employee

Re: I'm seeing CPU growth on version 8.1.0.3002

by bstern@us.ibm.com » Tue Jun 29, 2010 6:57 pm

I downloaded the Net Client from the AT&T web site since I'm running Windows 7 64-bit.
*I am an AT&T employee, and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.
Message 3 of 8
Employee

Re: I'm seeing CPU growth on version 8.1.0.3002

by jonesn » Wed Jun 30, 2010 2:40 am

I'm not seeing anything like this (ibm), however I do see a regular 4-6% drain from netclient.exe even when no/little vpn traffic is flowing - I'm not convinced there's a good reason for this. I worry it could be as simple as the GUI update -- although it occurs even when app is minimized.

It would be useful to try to reduce this as it's just a waste of resource

This is the cpu consuming thread:
wow64win.dll+0x3fc2a
wow64win.dll+0x1ac48
wow64.dll!Wow64SystemServiceEx+0xd7
wow64cpu.dll!TurboDispatchJumpAddressEnd+0x24
wow64.dll!Wow64SystemServiceEx+0x1ce
wow64.dll!Wow64LdrpInitialize+0x429
ntdll.dll!RtlUniform+0x173
ntdll.dll!RtlResetRtlTranslations+0xd44
ntdll.dll!LdrInitializeThunk+0xe
USER32.dll!GetFocus+0x22
mfc90.dll+0x9a685
mfc90.dll+0x6717d
NetClient.exe+0x24484
ntdll.dll!RtlInitializeExceptionChain+0x63
ntdll.dll!RtlInitializeExceptionChain+0x36
*I am an AT&T employee, and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.
Message 4 of 8
Employee

Re: I'm seeing CPU growth on version 8.1.0.3002

by bstern@us.ibm.com » Wed Jul 07, 2010 12:18 pm

I would be thrilled with 4 to 6 percent CPU utlization. Mine grows rapidly to the point where it consumes 1 entire CPU core.
*I am an AT&T employee, and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.
Message 5 of 8
Employee

Re: I'm seeing CPU growth on version 8.1.0.3002

by bstern@us.ibm.com » Sat Jul 10, 2010 10:25 am

I was able to solve the problem. After a lot of investigation and trial and error I figured out that there was some odd interaction between some Sierra Wireless drivers and the AT&T Net Client.

Here is what I did. I used a program called Process Explorer. I was able to see that NetClient was using SwiApiMux.exe. This seems to be related to Sierra Wireless. I compared my Windows 7 64-bit system with a machine that is very similar, but didn't have the Sierra Wireless drivers installed. I noticed that SwiApiMux.exe was NOT being used by NetClient.

Ultimately, I removed the Sierra Wireless drivers. I also went through the filesystem and removed all remnants of Sierra Wireless. Then I reinstalled AT&T Net Client and everything is working well.
*I am an AT&T employee, and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.
Message 6 of 8
Employee

Re: I'm seeing CPU growth on version 8.1.0.3002

by jonesn » Mon Jul 26, 2010 3:32 am

Glad you solved your CPU issue.

However the 5-10% "leak" with no/low VPN activity and a minimize GUI is a seemingly unnecessary hit on system resource.

Can this be addressed?
Under windows is there a way of connecting without using the GUI?
*I am an AT&T employee, and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.
Message 7 of 8
Employee

Re: I'm seeing CPU growth on version 8.1.0.3002

by jonesn » Tue Oct 05, 2010 10:31 am

still seeing this on 8.2.0.2028 (latest version permitted by our AT&T configuration)
*I am an AT&T employee, and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.
Message 8 of 8
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