On 02/06/2012 02:13 PM, Saugata Das wrote: > On 5 February 2012 08:15, Chris Ball <cjb@xxxxxxxxxx> wrote: >> Hi, >> >> On Wed, Feb 01 2012, Saugata Das wrote: >>> From: Saugata Das <saugata.das@xxxxxxxxxx> >>> >>> This patch groups the read or write transfers to eMMC in different contexts >>> based on the block number. Transfers to consecutive blocks are grouped to a >>> common context. So several small transfers combine to give performance like >>> a large multi block transfer. >>> >>> The patch creates a context of 1MB multiple in non-large unit mode. Reliable >>> mode is enabled in the context based on whether reliable write is enabled. >> >> Do you see any performance changes with this patchset? If so, can you >> give details? > > I do not see any performance impact (positive or negative) on the > sample eMMC-4.5 device which I have. This could be due to the slow > bridge which I use (1-bit mode at 25MHz) to connect the eMMC-4.5 > device on micro-SD slot of 8500 platform. I think that should be increased the performance by how we select the context. I also didn't see any performance benefit..8-bit mode at 50Mhz. But i have interest for this feature Best Regards, Jaehoon Chung > >> >> Thanks, >> >> - Chris. >> -- >> Chris Ball <cjb@xxxxxxxxxx> <http://printf.net/> >> One Laptop Per Child >> -- >> 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 > -- > 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 > -- 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
