On 4/21/2016 4:25 PM, Christian Lamparter wrote:
> On Thursday, April 21, 2016 09:15:21 PM Andy Shevchenko wrote:
>> The last approach in the commit 8b3444852a2b ("sata_dwc_460ex: move to generic
>> DMA driver") to switch to generic DMA engine API wasn't tested on bare metal.
>> Besides that we expecting new board support coming with the same SATA IP but
>> with different DMA.
>>
>> This series is targetting the following things:
>> - a few bug fixes to the original driver
>> - a part to fix the DMA engine usage and in particularly dw_dmac driver
>> - move driver to use generic PHY and "dmas" property which leads to update in DTS
>>
>> The driver has been tested myself on Sam460ex and WD MyBookLive (apollo3g)
>> boards. In any case I ask Christian, Måns, and Julian to independently test and
>> provide Tested-by tag or error report.
> I did a test run on my WD MyBook Live. I applied all the patches in
> this series on top of the topic/dw branch of Vinod Koul:
> <https://git.kernel.org/cgit/linux/kernel/git/vkoul/slave-dma.git/>
>
> Tested-by: Christian Lamparter <chunkeey@googlemail.com>
> ---
> results for my old ST3808110AS HDD. filesystem is ext4.
>
> # hdparm -t /dev/sda
>
> /dev/sda:
>   Timing buffered disk reads: 204 MB in  3.02 seconds =  67.51 MB/sec
>
> # bonnie++ -u mbl
> Using uid:1000, gid:1000.
> Writing a byte at a time...done
> Writing intelligently...done
> Rewriting...done
> Reading a byte at a time...done
> Reading intelligently...done
> start 'em...done...done...done...done...done...
> Create files in sequential order...done.
> Stat files in sequential order...done.
> Delete files in sequential order...done.
> Create files in random order...done.
> Stat files in random order...done.
> Delete files in random order...done.
> Version  1.97       ------Sequential Output------ --Sequential Input- --Random-
> Concurrency   1     -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
> Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP
> mbl            496M    98  99 26011  21 17589  20   538  99 80138  39 208.9   8
> Latency             95267us    1409ms     295ms   26947us    9644us    1787ms
> Version  1.97       ------Sequential Create------ --------Random Create--------
> mbl                 -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
>                files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
>                   16  6959  78 +++++ +++  5197  40  7250  79 +++++ +++  4718  37
> Latency               149ms    6742us     212ms     177ms     767us     217ms
> 1.97,1.97,mbl,1,1461269771,496M,,98,99,26011,21,17589,20,538,99,80138,39,208.9,8,16,,,,,6959,78,+++++,+++,5197,40,7250,79,+++++,+++,4718,37,95267us,1409ms,295ms,26947us,9644us,1787ms,149ms,6742us,212ms,177ms,767us,217ms
>
>
>
>
Again on copy partitions .