Clemens, Thanks for the data! On Thu, Feb 04, 2010 at 04:24:53PM +0800, Clemens Ladisch wrote: > Wu Fengguang wrote: > > Anyone has 512/128MB USB stick? > > 64 MB, USB full speed: > Bus 003 Device 003: ID 08ec:0011 M-Systems Flash Disk Pioneers DiskOnKey > > 4KB: 139.339 s, 376 kB/s > 16KB: 81.0427 s, 647 kB/s > 32KB: 71.8513 s, 730 kB/s > 64KB: 67.3872 s, 778 kB/s > 128KB: 67.5434 s, 776 kB/s > 256KB: 65.9019 s, 796 kB/s > 512KB: 66.2282 s, 792 kB/s > 1024KB: 67.4632 s, 777 kB/s > 2048KB: 69.9759 s, 749 kB/s It seems to reach good throughput at 64KB readahead size :) Thanks, Fengguang -- 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
