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SMP issues on ingress queue grafting

To: netdev@xxxxxxxxxxx
Subject: SMP issues on ingress queue grafting
From: bert hubert <ahu@xxxxxxx>
Date: Thu, 4 Jul 2002 16:41:42 +0200
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Alexey, Werner, Jamal, Others,

On 2.4.18-ac3 SMP, Dimitris Zilaskos reports that he can reliably hang his
system with the following two line script repeated during heavy traffic.

Full thread starts here:
http://mailman.ds9a.nl/pipermail/lartc/2002q3/004316.html

Hope this points you to any problems.

Regards,

bert

----- Forwarded message from Dimitris Zilaskos <dzila@xxxxxxxxxxxxxxxxxxxxxxxx> 
-----

From: Dimitris Zilaskos <dzila@xxxxxxxxxxxxxxxxxxxxxxxx>
To: Stef Coene <stef.coene@xxxxxxxxx>
Cc: lartc@xxxxxxxxxxxxxxx
Subject: Re: [LARTC] tc reliably hangs my system
Date: Thu, 4 Jul 2002 13:07:08 +0300 (EEST)


 ok , this 2 lines repated anything from 5 to 20 times cause the hang :

tc qdisc del dev eth0 ingress
tc qdisc add dev eth0 handle ffff: ingress

 again , the presence of sustained outgoing traffic catalyses the effect .
It takes at least 150-200 kbytes/sec to easily cause the hang .

 Regards ,

--
=============================================================================

Dimitris Zilaskos

Department of Physics @ Aristotle Univercity of Thessaloniki , Greece
=============================================================================

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