Re: [PATCH] revision.c: reduce object database queries

> In mark_parents_uninteresting(), we check for the existence of an
> object file to see if we should treat a commit as parsed. The result
> is to set the "parsed" bit on the commit.
>
> Modify the condition to only check has_object_file() if the result
> would change the parsed bit.
>
> When a local branch is different from its upstream ref, "git status"
> will compute ahead/behind counts. This uses paint_down_to_common()
> and hits mark_parents_uninteresting(). On a copy of the Linux repo
> with a local instance of "master" behind the remote branch
> "origin/master" by ~60,000 commits, we find the performance of
> "git status" went from 1.42 seconds to 1.32 seconds, for a relative
> difference of -7.0%.