On Wed, Oct 21, 2015 at 10:01 AM, <[email protected]> wrote: > Hi, > > > We are using Micron eMMC part MTFC4GMDEA-4M (4GB version) and we are > getting really low R/W numbers on custom vybrid board (Freescale Vybrid > MVF51NS151CMK50 ). We are using custom software (non-Linux) on this board. > > Micron eMMC: > 25MB data transfer in 256KB R/W blocks. Multi-block transfer enabled in > driver, using DMA. > Read 14.0964 MBytes/sec : Write 5.5438 MBytes/sec > > While on 1GB MMCplus card we getting R/W > Read ~ 23 MB/s , Write ~ 10 MB/s > > Can anyone point out any special fix we need to do for eMMC as MMCplus and > class 10 SD cards are performing double than micron eMMC. Although eMMC > datasheet claims 40 MB/s and 20MB/s for R/W but we are not even getting half > of that.
It helps if you pay more $ for the good eMMC's, ones with UHS modes up to 200Mhz... Regards, -- Robert Nelson https://rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
