linux-kernel - Re: [Intel IOMMU 00/10] Intel IOMMU support, take #2

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Date:	Tue, 26 Jun 2007 12:00:32 -0400
From:	Muli Ben-Yehuda <muli@...ibm.com>
To:	"Keshavamurthy, Anil S" <anil.s.keshavamurthy@...el.com>
Cc:	Arjan van de Ven <arjan@...ux.intel.com>, Andi Kleen <ak@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, gregkh@...e.de,
	suresh.b.siddha@...el.com, ashok.raj@...el.com,
	davem@...emloft.net, clameter@....com
Subject: Re: [Intel IOMMU 00/10] Intel IOMMU support, take #2

On Tue, Jun 26, 2007 at 08:48:04AM -0700, Keshavamurthy, Anil S wrote:

> Our initial benchmark results showed we had around 3% extra CPU
> utilization overhead when compared to native(i.e without IOMMU).
> Again, our benchmark was on small SMP machine and we used iperf and
> a 1G ethernet cards.

Please try netperf and a bigger machine for a meaningful comparison :-)
I assume this is with e1000?

> Going forward we will do more benchmark tests and will share the
> results.

Looking forward to it.

Cheers,
Muli
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