Date: Sat, 13 Mar 1999 23:54:44 GMT From: dgilbert@velocet.net To: FreeBSD-gnats-submit@freebsd.org Subject: kern/10575: tx0 slows to crawl Message-ID: <199903132354.XAA22999@sabre.velocet.net>
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>Number: 10575 >Category: kern >Synopsis: tx0 devices slow to crawl over time >Confidential: no >Severity: critical >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sat Mar 13 16:00:01 PST 1999 >Closed-Date: >Last-Modified: >Originator: David Gilbert >Release: FreeBSD 3.1-RELEASE i386 >Organization: Velocet Communications >Environment: I have a number of machines with one or more Etherpower II ethernet cards in them. The number of cards does not appear to matter. This bug appears in both FreeBSD-3.0 and FreeBSD-3.1 >Description: Left to it's own, the tx0 driver will start to 'hold' packets until the system is virtually unusuable. A typical symptom is where pinging the machine will yield an X second pause followed by a spurt of X ping packets. The strange thing about this problem is that trafic causes this problem to be less frequent. More traffic on an interface will make the problem happen far less often and far less severely. On a machine that has many websites and an average 40K/s traffic and on a machine that has two of these cards to be a router and firewall, the problem takes as much as a week to manifest and X will be 1 or 2. On a machine with very little traffic (not entirely in production yet) the problem will normally develop over about 24 hours and X will be 16. >How-To-Repeat: Use a tx0 card in a machine, and let it sit almost-idle for 24 hours. >Fix: I have found that ifconfig up is not enough to fix the problem (as I have heard about the ep0 driver). I have found that ifconfig down followed by ifconfig up is required. >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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