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Message-ID: <1154650600.3117.36.camel@rh4>
Date: Thu, 03 Aug 2006 17:16:40 -0700
From: "Michael Chan" <mchan@...adcom.com>
To: "David Miller" <davem@...emloft.net>
cc: herbert@...dor.apana.org.au, tytso@....edu,
linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH -rt DO NOT APPLY] Fix for tg3 networking lockup
On Thu, 2006-08-03 at 17:01 -0700, David Miller wrote:
> From: Herbert Xu <herbert@...dor.apana.org.au>
> Date: Fri, 4 Aug 2006 09:59:27 +1000
>
> > Watchdogs usually require one heartbeat every 30 seconds or so. Does
> > the ASF heartbeat need to be that frequent?
>
> The ASF heartbeat needs to be sent every 2 seconds.
>
Yep, we send it every 2 seconds and it will reset in 5 seconds after the
last heartbeat. So the margin is 3 seconds. These numbers are somewhat
arbitrary and the goal is to allow ASF to function properly without too
much delay after the system has crashed.
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