Hi LKML I recently got a SABRE Lite, iMX.6q based SBC. I bought this board over the RPi3, for example, because I wanted SATA and open source graphics drivers via etnaviv / armada.
Under Arch Linux ARM with Linux 4.9.0, hdparm said I was getting an average of ~120 MB/s buffered disk read speed. After upgrading to Linux 4.9.8 buffered read speed is just under 90 MB/s. That's a notable hit! I both cases I was running the stock ALARM armv7h kernel package. Might any of you Linux ARM devs know what has changed since 4.9.0 that could cause such a big decrease in SATA IO? Thanks
