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Different OS, Different speedtest result ...

Community Veteran
Posts: 1,229
Thanks: 1
Registered: 30-07-2007

Different OS, Different speedtest result ...

I've been meaning to post about this for ages.
When I run the BBMAX speedtest on my Acer laptop (wired) running XP Home SP2 using Opera I never get more than 5900 kbps down. Switching off ZA and AVG on the Acer makes no difference btw.
When I run it on one of my (old desktop) Linux boxes (wired) using Opera, I get about 6400 kbps down.
This is a consistent, repeatable result.
Ideas?
Paul

8 REPLIES
pierre_pierre
Grafter
Posts: 19,757
Registered: 30-07-2007

Re: Different OS, Different speedtest result ...

Linux is faster than Bill Gates
Superuser
Superuser
Posts: 9,136
Thanks: 546
Fixes: 46
Registered: 06-04-2007

Re: Different OS, Different speedtest result ...

Have you optimised RWIN/MTU on the Windows laptop?
When you refer to wired I assume you mean Ethernet and not USB?
David
Community Veteran
Posts: 38,418
Thanks: 1,004
Fixes: 58
Registered: 15-06-2007

Re: Different OS, Different speedtest result ...

I got the same effect on BBMax and the Plusnet beta speedtester when comparing XP to Vista 64 bit. The Vista result was significantly higher than my IP rate
Community Veteran
Posts: 1,229
Thanks: 1
Registered: 30-07-2007

Re: Different OS, Different speedtest result ...

@spraxyt -- yes all RWIN'd and MTU'd, and yes Ethernetted
Community Veteran
Posts: 1,571
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Registered: 13-04-2007

Re: Different OS, Different speedtest result ...

Linux may not be downloading the latest updates which could slow the results. Also AV may have an effect if its scanning download files and the firewall.
Community Veteran
Posts: 1,229
Thanks: 1
Registered: 30-07-2007

Re: Different OS, Different speedtest result ...

hmm did you read my original post ? [quote="paulh"]Switching off ZA and AVG on the Acer makes no difference btw
and speedtests don't "download updates" ...
macmonkey1981
Newbie
Posts: 4
Registered: 15-01-2008

Re: Different OS, Different speedtest result ...

I used to have a similar issue with MacOS X 10.2/10.3 using Safari - speedtest results would always be lower on the Mac than on the PC's on my network.
However, in Mac OS X 10.5 (Safari) speeds are faster than WinXP (Firefox). A bit of RWIN tweaking has got XP up to speed however. I kow it's not a 'fair' test as I'm using different browsers.
Maybe pierre_pierre is correct - perhaps the implementation of TCP/IP in your Linux distro is better than the MS effort?
What happens if you try another browser on both OSes?
VileReynard
Seasoned Pro
Posts: 10,674
Thanks: 209
Fixes: 9
Registered: 01-09-2007

Re: Different OS, Different speedtest result ...

Linux dynamically adjusts things like RWIN.