[Soekris] net4501 reset under high packet load

Roger Weeks rjw at sonic.net
Sat Jul 26 04:31:40 UTC 2003

Here's what my colleague says:

I have a wet11 with a 19 dbi dish on my end and Ron has a Soekris with a
15.5 dbi panel pointed at me.  I use iperf to generate a maximum speed tcp
workload from my Laptop (thru the wet11) to Ron -- client on my side and
server on Ron's.  At the same time I run a maximum speed tcp workload from
Ron to my laptop -- client side on Ron's and server on mine.  These two
concurrent steams of traffic will cause the Soekris to crash in about 5

Roger Weeks

> Message: 3
> Date: Thu, 24 Jul 2003 14:25:25 -0700
> From: Chuck Yerkes <chuck+soekris at 2003.snew.com>
> To: soekris-tech at lists.soekris.com
> Subject: Re: [Soekris] net4501 reset under high packet load
> Reply-To: soekris-tech at lists.soekris.com
> Quoting Roger Weeks (rjw at sonic.net):
> > I'll have to get the details, but one of my colleagues has produced similar r
> esults with a net4521 running pebble linux.  He says he can cause the box to re
> boot after 5 minutes of heavy load.  I'll post the details as I get them.
> I'd love to see "heavy load" define in reproducable terms.
> Does running 5million TCP packets via ttcp cause it?  (ethernet/drivers)
> Or mallocing many (say 1025) 64K chunks?   (ram exhaustion)
> Or running many simple math loops that suck CPU?  (CPU load)
> or what combination?

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