Messages in this thread | | | Date | Tue, 12 Aug 2014 22:02:28 +0200 | From | Apelete Seketeli <> | Subject | Re: [PATCH v6 2/2] mmc: jz4740: prepare next dma transfer in parallel with current transfer |
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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 letter: https://lkml.org/lkml/2014/7/21/11. As you can see the improvement is measurable, although not significant with zcat.
Cheers. -- Apelete
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