netdev - 10G intel cards - streaming for over than 30 minutes

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Message-ID: <5d96567b0812081437q604f63beg350093439e184dc@mail.gmail.com>
Date:	Tue, 9 Dec 2008 00:37:26 +0200
From:	Raz <raziebe@...il.com>
To:	netdev@...r.kernel.org
Subject: 10G intel cards - streaming for over than 30 minutes

I have been stressing my two duals 10G  82598EB cards, all 4 ports connected.
At the beginning all was OK , 24Gbps outgoing traffic from all ports (
6 Gbps from each port).
But after some time, aprroximately 30 minutes, one of the ports
started to return QUEUE BUSY errors.

I am using 2.6.18-8.el5 kernel, my motherboard is a Supermicro 1025WR,
64bit, PCI-E2.
Why is that ? Is this a known bug ? should I move to a newer driver ?
Should I disable
or enable DCA in BIOS ?

thank you
raz
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