netdev - Re: e1000 performance issue in 4 simultaneous links

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Message-Id: <20080111.174109.57502326.davem@davemloft.net>
Date:	Fri, 11 Jan 2008 17:41:09 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	benny+usenet@...rsen.dk
Cc:	netdev@...r.kernel.org
Subject: Re: e1000 performance issue in 4 simultaneous links

From: Benny Amorsen <benny+usenet@...rsen.dk>
Date: Fri, 11 Jan 2008 12:09:32 +0100

> David Miller <davem@...emloft.net> writes:
> 
> > No IRQ balancing should be done at all for networking device
> > interrupts, with zero exceptions.  It destroys performance.
> 
> Does irqbalanced need to be taught about this?

The userland one already does.

It's only the in-kernel IRQ load balancing for these (presumably
powerpc) platforms that is broken.
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