misc/93567: Via Rhine : Asymetric Bandwith

[Olivier BONHOMME]

>Number:         93567
>Category:       misc
>Synopsis:       Via Rhine : Asymetric Bandwith
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Feb 19 17:00:19 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator:     Olivier BONHOMME
>Release:        FreeBSD 5.3 and 5.4
>Organization:
>Environment:
root at ns85# uname -a
FreeBSD xxxxx 5.4-RELEASE-p11 FreeBSD 5.4-RELEASE-p11 #0: Sat Feb 18 19:50:47 CET 2006     root at ns85.cdedie.com:/usr/obj/usr/src/sys/GENERIC  i386

ptitoliv at ares$ uname -a
FreeBSD ares 5.3-RELEASE FreeBSD 5.3-RELEASE #0: Fri Nov  5 04:19:18 UTC 2004     root at harlow.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386


>Description:
Using a via-rhine based network card, there is a big performance problem with MONO-THREAD file transferts using SCP, FTP or HTTP.

When I make a file transfert between two boxes (My Box and a Debian box) plugged in the same LAN : 

Debian => My BSD BOX : Between 5 and 7 MB/s
My BSD BOX => Debian : Between 200 kB/s and 1 MB/s

There is no traffic shaping between these two boxes but there is an IP router.

Another test done : The same boxes (Debian and BSD) plugged on a high speed LAN and my ADSL 1 MB/s connexion at home.

Debian => ADSL : 1 MB/s
My BSD BOX => ADSL : 200 KB/s

Could it be a bug with the via rhine driver ?

Regards,
Olivier BONHOMME


>How-To-Repeat:
Just make a file transfert between two boxes.
>Fix:
              
>Release-Note:
>Audit-Trail:
>Unformatted: