Every write on a SSD block reduces its data retension capability. No concrete figures but it is assumed to be - 10 years for new devices - 1 year at rated usage. (There are much lower figures around) Hence, I would not trade retension time and wear for autodefrag with no/minor benefits on SSD. (which means at least +2x write amplification on fragments) On hard disks, we've experienced temporary freezes (about 10secs to 3mins) during background autodefrag. Regards, Imran -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
