Re: [PATCH v6 2/2] mmc: jz4740: prepare next dma transfer in parallel with current transfer

From: Apelete Seketeli
Date: Tue Aug 12 2014 - 16:02:34 EST

Hi Chris,

On Tue, Aug-12-2014 at 07:12:33 PM +0100, Chris Ball wrote:
> Hi Apelete,
> On Mon, Jul 21 2014, Apelete Seketeli wrote:
> > It should help reduce the impact of DMA preparation overhead on the SD
> > card performance.
> Did you do any benchmarking to check that this is true? (If so, it'd
> be good to note what performance change you saw in the commit message.)

I actually did a few quick benchmarks, posted the results in the cover
As you can see the improvement is measurable, although not significant
with zcat.

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