> This patch truly enables CONFIG_MMC_BLOCK_BOUNCE feature by setting the > hw/phys segs to 1 without which the feature is not exploited as > large/bounce buffers of size 64KB are not used for any of read/write > transaction. Without this patch, smaller buffers are used whose sizes vary > from 512 Bytes to 32KB. In my testing with a SD Extreme III high speed 2GB > SD card using FAT file system performance improvement of about 10% for > write and 40% for reads has been observed. Write and Read speed without > this patch was 5.2Mbytes/sec and 6.5Mbytes/sec respectively whereas write > and read performance with this patch has jumped to 5.9Mbytes/sec and > 9MBytes/sec, respectively.
Ack. I've just run mmc_test over it and there are no regressions. And it really is snappy now :) Thank you! Cheers, Bernard. _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
