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Date: Tue, 7 Feb 2017 11:41:26 +0000 From: Dan MacDonald <allcoms@...il.com> To: linux-kernel@...r.kernel.org Subject: ARM imx.6 SATA speed regression 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
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