On Mon, 18 Mar 2019 at 12:01, Oleksij Rempel <linux@xxxxxxxxxxxxxxxx> wrote: > > Hi Daniel, > > Am 18.03.19 um 10:09 schrieb Daniel Drake: > > Hi Oleksij, > > > > Thanks again for your work on the new mmc alcor driver. > > > > Testing it quickly for the first time, with a Transcend Class 10 32GB > > SD card that I have on hand (on Asus P4540UQ / AU6621). The driver > > seems to be working (cool!), but I/O performance is much lower than > > the ugly vendor driver (ampe_stor). > > > > dd if=/dev/XXX of=/dev/null bs=1M count=32 > > > > On ampe_stor : 12.1mb/sec > > On new alcor driver: 364kb/sec > > Uff... 364kb/sec is wary low. Feels like due some errors or missing capabilities the HI speed is not > enabled. Well, nothing have really changed in regards to this. Perhaps try a plain v5.0 and compare with v5.1 rc1 to see if this is regression? [...] Kind regards Uffe