id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	launchpad_bug
2	"use ""darcs query"" to get count of patches faster"	zooko	somebody	"darcsver currently uses {{{darcs changes --xml}}} to get a count of patches, which takes 8 seconds on draco for the Tahoe trunk repository.  Darcs also offers {{{darcs query repo}}} which emits the relevant value (the count of patches) in 0.4 seconds.

This is important because it is probably the single largest component of slowdown in http://allmydata.org/trac/tahoe/ticket/591 (""make quicktest"" could be quicker and less noisy) (although it would probably be better to change ""make quicktest"" so that it didn't invoke darcsver at all, if possible.)"	enhancement	new	major		component1