On Mon, Nov 21, 2011 at 05:18:20PM +0800, Wu Fengguang wrote: > This looks reasonable: smaller device tend to be slower (USB sticks as > well as micro/mobile/old hard disks). > > Given that the non-rotational attribute is not always reported, we can > take disk size as a max readahead size hint. This patch uses a formula > that generates the following concrete limits: Given that you mentioned the rotational flag and device size in this mail, as well as benchmarking with an intel SSD - did you measure how useful large read ahead sizes still are with highend Flash device that have extremly high read IOP rates? -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
