interrupt controler question

Eric Lemoine (Eric.Lemoine@ens-lyon.fr)
Fri, 17 May 2002 09:09:36 +0200

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Using the old i8259 interrupts controller, my 1-way Linux2.4.16 box
livelocks when receiving a high rate UDP flow (interrupt rate is so
high that the NET_RX_SOFTIRQ never gets the chance to pull the
packets off the backlog queue). However, the receive livelock
phenomenom completely disappears when making use of the IO-APIC.

Anyone has an explanation for this?

THX.

-- 
Eric
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