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Re: [Fwd: Re: possible bug x86 2.4.2 SMP in IP receive stack]

To: Bob Felderman <feldy@xxxxxxxx>
Subject: Re: [Fwd: Re: possible bug x86 2.4.2 SMP in IP receive stack]
From: Pekka Pietikainen <pp@xxxxxxxxxxxxxx>
Date: Tue, 6 Mar 2001 21:15:30 +0200
Cc: andrewm@xxxxxxxxxx, kuznet@xxxxxxxxxxxxx, netdev@xxxxxxxxxxx
In-reply-to: <200103061854.KAA03475@myri.com>
References: <200103061854.KAA03475@myri.com>
Sender: owner-netdev@xxxxxxxxxxx
On Tue, Mar 06, 2001 at 10:54:22AM -0800, Bob Felderman wrote:
> a 1.5Gigabit/sec udp stream. It might be possible to reproduce this
> using 100Mbit ethernet, but it might require 1gbit ethernet with jumbo
> frames. I'm currently using a 9000 bytes MTU. Our interrupt routine
> will deliver only a single ethernet packet to the higher levels
> for each interrupt, so maybe that also stresses the IP fragmentation
> code.
Verified on Alteon GigE (1500 byte frames seemed to be ok, 9000 killed the
receiver) using the script&/proc settings. I'd have to do some walking to
get the Oops so I'll do that tomorrow :)

-- 
Pekka Pietikainen




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