From owner-freebsd-bugs  Tue May 25  6:50: 5 1999
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Date: Tue, 25 May 1999 06:40:45 -0700 (PDT)
From: ilhwan@dcslab.snu.ac.kr
To: freebsd-gnats-submit@freebsd.org
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Subject: i386/11883: 3com 905B Cyclone does not show full performance, compared to Linux box (300KByte/sec, contrast to 800KB/sec of Linux box)
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>Number:         11883
>Category:       i386
>Synopsis:       3com 905B Cyclone does not show full performance, compared to Linux box (300KByte/sec, contrast to 800KB/sec of Linux box)
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue May 25 06:50:01 PDT 1999
>Closed-Date:
>Last-Modified:
>Originator:     ILHWAN KIM
>Release:        FreeBSD-3.1 RELEASE
>Organization:
Seoul National University
>Environment:
FreeBSD allegro.snu.ac.kr 3.1-STABLE FreeBSD 3.1-STABLE #0: Tue May  4 18:13:53 KST 1999     root@allegro.snu.ac.kr:/usr/src/sys/compile/ALLEGRO  i386

>Description:
I use 3com 905B NIC.  Its FTP Performance under Win95/Linux is about 700-800KByte/sec against the ftp server connected to the same HUB.
When I use this card on FreeBSD-3.1, it only performs in about 300KByte/sec for the same configuration.
In addition, when I ping FreeBSD machine (allegro) on the same time pinging another machine (Sun Ultra-1),
the RTTs against FreeBSD box showes larger variance (from 0.6ms upto 150ms).
'ifconfig xl0 media autoselect' produces following message.

May 25 21:56:07 allegro /kernel: xl0: autoneg complete, link status good (half-duplex, 10Mbps)

>How-To-Repeat:
Always.
>Fix:
Use Linux or Windows for full performance of 3C905B cards.

>Release-Note:
>Audit-Trail:
>Unformatted:


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