id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	launchpad_bug
697	zfec: SIMD	zooko		"Jack Lloyd contributed a patch to zfec to use SSE2 instructions which can result in around a 2X speedup.  Unfortunately it instead results in a 25% slowdown!  That's a mystery.

http://allmydata.org/trac/zfec/ticket/4
"	enhancement	closed	minor	undecided	code-encoding	1.4.1	duplicate	mystery