Date: Sat, 3 Nov 2001 12:23:19 -0800 (PST) From: Daniel Rudy <dcrudy@aol.com> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/31737: Network performance is <16Kbps using a full-duplex 100mbit lan Message-ID: <200111032023.fA3KNJO83045@freefall.freebsd.org>
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>Number: 31737 >Category: kern >Synopsis: Network performance is <16Kbps using a full-duplex 100mbit lan >Confidential: no >Severity: serious >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sat Nov 03 12:30:02 PST 2001 >Closed-Date: >Last-Modified: >Originator: Daniel Rudy >Release: 4.4-STABLE 10.29.2001 >Organization: None >Environment: FreeBSD strata.pacbell.net 4.4-STABLE FreeBSD 4.4-STABLE #0: Mon Oct 29 09:12:31 PST 2001 root@strata.pacbell.net:/usr/src/sys/compile/STRATA i386 >Description: Network perfomance is non-existant while using a 100 MegaBit/sec LAN under Full-Duplex mode. Network stalls during ANY file transfer when the file size exceeds around 60K including FTP and NFS. Machines that use other platforms, such as Microsoft Windows 98, Windows 2000, etc., also experiance the same problem when connecting ONLY to FreeBSD machines, but work fine when connecting to any machine that is not FreeBSD based. This problem was not apparent in 4.2. >How-To-Repeat: Set network transfer mode to 100mbps Full-Duplex and try to transfer a large file which is >500KB. >Fix: Uknown at this time. Problem seems to be in the networking subsystem. Considering that changing to half duplex fixes the problem, the problem is probably at the interface point betwen the network subsystem and the network interface card device driver. >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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