Hi Venkat, I was looking for some explanations of eMMC behavior in products we are developing now and found your comments around eMMC here. Our observation shows that that eMMC performance vary significantly and depends on volume of data to write during time slot and temperature. After a heavy write test was run for some time for a good performance eMMC (showing 10-12MB/s of the write performance on big blocks) its write performance degraded to the 4-5MB/s. We even observed performance lowest level as 65KB/s! There are a lot of Write type of operations necessary into dedicated eMMC partition by requirements. The side effect is that long write operations block Application UI to redraw the views because it requires Read operations. Visually we see “Blank Dark Screen” for few seconds and even ANRs. So HMI may help us. Question: Did you finish research with HPI to try ? Which type of eMMC did you use? P.S. We use TI BSP for OMAP3630 for Android -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
