On Tuesday 12 October 2010, Amit Kucheria wrote:
http://rwmj.wordpress.com/2010/10/05/visualizing-reads-writes-and-alignment/
This looks like pretty cool stuff. Using a patch to qemu, these tools generate a visualization of I/O showing the location and alignment of reads and writes.
Very nice, we should add a link to the blueprint for the SD/MMC performance work.
Arnd