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Date: Thu, 20 Feb 2003 11:54:35 +0100
From: Andi Kleen <ak@suse.de>
To: dada1 <dada1@cosmosbay.com>
Cc: Andi Kleen <ak@suse.de>, Simon Kirby <sim@netnation.com>,
       linux-kernel@vger.kernel.org, linux-net@vger.kernel.org,
       davem@redhat.com
Subject: Re: Longstanding networking / SMP issue? (duplextest)
Message-ID: <20030220105435.GD10374@wotan.suse.de>
References: <20030219174757.GA5373@netnation.com.suse.lists.linux.kernel> <p73r8a3xub5.fsf@amdsimf.suse.de> <20030220092043.GA25527@netnation.com> <20030220093422.GA16369@wotan.suse.de> <006301c2d8c8$921c1d10$760010ac@edumazet>
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> Yes IP is best-effort. But this argument cant explain why IP on linux works
> better if we disable SMP on linux...

It has nothing to do with SMP. The lazy locking dropping packets can happen
on UP kernels too in extreme cases. Also with preempt.

-Andi