On Tue, Mar 5, 2019 at 11:51 AM Jeff King <peff@xxxxxxxx> wrote: > > processing power from multiple cores, but about _not_ blocking. I > > think one example use case here is parallel checkout. While one thread > > is blocked by pack access code for whatever reason, the others can > > still continue doing other stuff (e.g. write the checked out file to > > disk) or even access the pack again to check more things out. > > I'm not sure if it would help much for packs, because they're organized > to have pretty good cold-cache read-ahead behavior. But who knows until > we measure it. > > I do suspect that inflating (and delta reconstruction) done in parallel > could be a win for git-grep, especially if you have a really simple > regex that is quick to search. Maybe git-blame too. But this is based purely on me watching CPU utilization of one command with hot cache. For git-blame though, diff code as to be thread safe too but that's another story. -- Duy
