On Fri, 15 Aug 2008, Björn Steinbrink wrote: > > Since you mention the delta cache, uau (no idea about his real name) on > #git was talking about some delta cache optimizations lately, although > he was dealing with "git log -S", maybe it affects rev-list in a similar > way. Unfortunately, I can't seem to find any code for that, just a > description of what he did and some numbers on the results in the IRC > logs. Yes, interesting. The delta cache was really a huge hack that just turned out rather successful. It's been hacked on further since (to do some half-way reasonable replacement with _another_ hack by adding an LRU on top of it), but it really is very hacky indeed. The "hash" we use for looking things up is also pretty much a joke, and it has no overflow capability, it just replaces the old entry with a new one. I wonder how hard it would be to replace the whole table thing with our generic hash.c hash thing. I'll take a look. Linus -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
