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Windows 7: High CPU usage while copying file over network

28 Aug 2009   #1
domvoyer

Windows 7
 
 
High CPU usage while copying file over network

Hi,

for some reasons, while copying a 13 gb file over the network (accessed from \\servername\e$\ to my C drive, the CPU usage is going close to 100%.

When I look at task manager, I see System using more than 30% of the CPU, SMC.EXE is using between 15% and 18%...

Does anyone have an idea why system is taking that much CPU?

I tried disabling the antivirus to reduce the SMC.exe process, without success...

Looking for advices.

Thanks.

Dominic


My System SpecsSystem Spec
.
28 Aug 2009   #2
zigzag3143

Win 8 Release candidate 8400
 
 

Hi and welcome

First things first. could you fill in your system specs (lower left corner) so we know what kind of hardware you have

Ken
My System SpecsSystem Spec
28 Aug 2009   #3
domvoyer

Windows 7
 
 

done
My System SpecsSystem Spec
.

28 Aug 2009   #4
ccatlett1984

 

This guide shows you how to speed up your Windows Vista network transfer by disabling Remote Differential Compression (RDC) in Windows Vista.
Disable Remote Differential Compression
  1. Open the Control Panel.
  2. Open Programs and features.
  3. Click Turn Windows features on or off.
  4. Uncheck Remote Differential Compression.
  5. Click OK.
My System SpecsSystem Spec
28 Aug 2009   #5
domvoyer

Windows 7
 
 

I should have said I disabled this already...

Quote   Quote: Originally Posted by ccatlett1984 View Post
This guide shows you how to speed up your Windows Vista network transfer by disabling Remote Differential Compression (RDC) in Windows Vista.
Disable Remote Differential Compression
  1. Open the Control Panel.
  2. Open Programs and features.
  3. Click Turn Windows features on or off.
  4. Uncheck Remote Differential Compression.
  5. Click OK.
I have also tried enabling the CCTP thing for the network card using netsh...
My System SpecsSystem Spec
30 Aug 2009   #6
ccatlett1984

 

I would also turn off "tcp offload" for your nic.

what model NIC controller are you using?
My System SpecsSystem Spec
31 Aug 2009   #7
domvoyer

Windows 7
 
 

Quote   Quote: Originally Posted by ccatlett1984 View Post
I would also turn off "tcp offload" for your nic.

what model NIC controller are you using?
I am using a Broadcom Netxtreme 57xx gigabit controller... I am reading everywhere that this setting should be turned on (recommended)...

I remember turning this off for certain applications on some 2003 servers, but on my workstation, I did not remember doing it. I will give this a shot and let you know how it turns out...

Thanks for the tip!

Dominic
My System SpecsSystem Spec
31 Aug 2009   #8
domvoyer

Windows 7
 
 

Ok i just tried the chimney disabled, and it actually decreased the network performance. The CPU is still maxing at 100%...

I have turned it back on, but.... i am now asking myself, maybe it is normal that the CPU usage is high when copying files over network...

How is it acting on your workstations guys?
My System SpecsSystem Spec
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 High CPU usage while copying file over network




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