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 From:  "Justin Albstmeijer" <justin at VLAMea dot nl>
 To:  "Manuel Kasper" <mk at neon1 dot net>
 Cc:  m0n0wall at lists dot m0n0 dot ch
 Subject:  Re: [m0n0wall] m0n0wall + net4501 keeps rebooting
 Date:  Tue, 30 Dec 2003 09:18:59 +0100 (CET)
Hmm, you are right.. doing the "kill watchdogd" test again, the soekris
does not reset anymore..

Did something wrong in the first test I think... or I should try the
lighter power supply again..

>> Killing the watchdogd, does not solve the reboot problem.
> Uhoh, Justin, unless there's another problem I haven't seen yet, you
> owe me one now. ;) Killing watchdogd does indeed solve the problem - of
> course I did not try this at first after you said it didn't help. Are
> you really sure you actually killed the watchdogd process? It makes
> perfect sense to me now: at 100.0% CPU load (mostly interrupts), that
> poor watchdogd process starves and doesn't get to tickle the watchdog
> again. After about 30 seconds, the watchdog timer fires, the CPU is
> reset - bingo. Also, now I know why I didn't see this problem back when
> I was doing some serious throughput testing with net45xx's and
> m0n0wall: there was no watchdogd in m0n0wall at that time!
> Since running watchdogd at an increased (or even realtime) priority
> doesn't help here (I tried it, too), I'm wondering what net45xx
> m0n0wall users think we should do... I see two solutions:
> - removing watchdogd
> - using polling by default on net45xx
> I'm not sure if the latter is such a good idea (even though polling
> yields a slightly higher throughput), because wireless cards can still
> cause the same problem.
> If no better solution is proposed, I'll just remove watchdogd from the
> next release. I'm not entirely sure it's needed anyway... has anybody's
> net45xx ever hung up for no reason? Mine certainly haven't.
> - Manuel