On Sun, Feb 6, 2011 at 10:15 AM, Per Jessen
Per Jessen wrote:
Per Jessen wrote:
After a bit of trial-and-error and studying the parted source code some more, I arrived at the start and end sectors having to be multiples of 2048. This works, parted doesn't complain - does anyone have an explanation? I'll be checking out the performance numbers to see if it makes a real difference.
On Western Digital 3Tb WD30EZRS, aligning the start sector to a multiple of 2048 gave an increase of 2-2.5MB/s (at the end of the drive).
Per, I haven't studied the source code, but the alignment preferences should default to 4KB as you said originally, but the values in directory /sys/block/sdb/queue should be read by parted and override the default. So cd into that directory and start cat'ing out the files that look relevant. Greg -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org