Hi Fabio, On Thu, Aug 11, 2016 at 09:53:31PM -0300, Fabio Estevam wrote:
Hi Peng,
On Thu, Aug 11, 2016 at 8:00 AM, Peng Fan van.freenix@gmail.com wrote:
To SD, there is no erase group, then the value erase_grp_size will be default 1. When erasing SD blocks, the blocks will be erased one by one, which is time consuming.
use AU_SIZE as a group to speed up the erasing.
Just curious: what was the measured increase in performace for the erase operation with your series?
Erasing 4MB. Before applying this patch set => time mmc erase 0x100000 0x2000
MMC erase: dev # 0, block # 1048576, count 8192 ... 8192 blocks erased: OK
time: 44.856 seconds
After applying the patch set: => time mmc erase 0x100000 0x2000
MMC erase: dev # 0, block # 1048576, count 8192 ... 8192 blocks erased: OK
time: 0.335 seconds
Will add the test reults in V2 commit log.
Thanks, Peng.
Thanks