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Date:      Wed, 27 Sep 2006 16:19:55 +0200
From:      "Patrick M. Hausen" <hausen@punkt.de>
To:        freebsd-stable@freebsd.org
Subject:   Re: 6.2 SHOWSTOPPER - em completely unusable on 6.2
Message-ID:  <20060927141955.GB84976@hugo10.ka.punkt.de>
In-Reply-To: <20060927135251.GA13222@icarus.home.lan>
References:  <451A1375.5080202@gneto.com> <20060927071538.GF22229@e-Gitt.NET> <451A4189.5020906@samsco.org> <20060927094509.GB75104@hugo10.ka.punkt.de> <451A71B6.6040201@crc.u-strasbg.fr> <20060927132555.GB83422@hugo10.ka.punkt.de> <20060927135251.GA13222@icarus.home.lan>

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Hi!

On Wed, Sep 27, 2006 at 06:52:51AM -0700, Jeremy Chadwick wrote:
> On Wed, Sep 27, 2006 at 03:25:55PM +0200, Patrick M. Hausen wrote:
> > On Wed, Sep 27, 2006 at 02:42:30PM +0200, Philippe Pegon wrote:
> > > it's just a me too. On our ftp server (ftp8.fr.freebsd.org), sometimes
> > > we see some "watchdog timeout" in the log with a bge card, but maybe it's
> > > not the same problem... :
> > 
> > As far as I know the watchdog timeouts are _supposed_ to be
> > mostly harmless, i.e. recoverable.
> 
> You'll still see impact -- that is, no packets flowing.  The
> reason things are recoverable is solely because of the retry
> functionality for layer 2 packets...

You are, of course, right. What I meant is: these timeouts should
not lead to freezing of all network communications for a couple
of minutes like me and some other people seem to experience.

TCP and most UDP based upper level protocols will recover
gently from a lost packet or two.

Regards,
Patrick
-- 
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