Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Response time on heavy communication is much slower than under XP


01 Apr 2011   #1

Windows 7 Professional x64
 
 
Response time on heavy communication is much slower than under XP

Hi,

I'm developping a GUI application that communicates with an electronic device through Ethernet. Basically the communication are strings through a telnet channel. We have some performance issue under Windows 7 (x86 and x64) and therefore we did some measurements. We send the same command to the device repeatly (500 times) and we measure the time from the sending until we received the answer back:
  • XP SP3 x86: average time on 500 tries, 8.5 ms
  • Win 7 SP1 x64: average time on 500 tries, 14 ms
This is a significant difference and we have real problems with this. I have Virtual Box intsalled on the Windows 7 machine, and when launching a VM in Virtual Box, the time is going down to 8.5 ms as well (under Windows 7 with a VM running). I tried to uninstall completely Virtual Box - it remains around 14ms - I suspected the network driver from VirtualBox.

It seems that launching a Virtual Box is doing something around network that DECREASE the response time.

I googled around and saw the network throttling mechanism, I tried to disable it (with a reboot), and it has no impact.

Can somebody help me by pointing me on any mechanism in Windows 7 that can slow down response time in the network? I know this is a setting somewhere, because launching a Virtual Box allows me to have the correct performance.

Any help will be very appreciated,
Didier


My System SpecsSystem Spec
.

07 Apr 2011   #2

Windows 7 Professional x64
 
 

Nobody can help?
My System SpecsSystem Spec
Reply

 Response time on heavy communication is much slower than under XP




Thread Tools



Similar help and support threads for2: Response time on heavy communication is much slower than under XP
Thread Forum
Slow response time from OS W7. Performance & Maintenance
Slow system response time Performance & Maintenance
Windows Live Mail slower response than usual Browsers & Mail
Solved My Laptop is getting slower from time to time please help !!!!! Performance & Maintenance
Typing Response Time General Discussion
Samsung Bx2331 Response time modes Hardware & Devices
Very high response time Network & Sharing

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 08:54 PM.
Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App
  

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33