On 07/18/2009 11:52 AM, Alex Elsayed wrote: > Alex Elsayed wrote: > >> H. Peter Anvin wrote: >>> implementation in Java, called "Jerasure".) Implementability using real >>> array instruction sets is key to decent performance. >> Actually, it is made clear in the paper that Jerasure is written as a C >> library, and Clearsafe is the only Java implementation. Don't let the name >> fool you. ;D > And again, I make a typo. s/Clearsafe/Cleversafe/. > It's still their own implementation of poor quality. That it is poor quality shows in the numbers, which are dramatically lower than the actual Linux implementation -- by an order of magnitude or more. In other words, they build a strawman and knock it down. The actual Linux implementation blasts any of the numbers they have in their paper, which I presume means they haven't optimized any of them. As such, all the numbers are meaningless. -hpa -- 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
