Taylor Blau <me@xxxxxxxxxxxx> writes: > This improves many cases where using bitmaps was significantly *slower* > than regular, non-bitmap traversal. In some instances, using bitmaps is > still slower than the non-bitmap case, but it is a substantial > improvement over the classic bitmap walk. > ... > In a large repository on GitHub.com, the timings to compute the objects > unique to "master", as in: > > $ git rev-list --count --objects master --not --exclude=master --branches > > improve as follows: Curious---when would it be significantly faster to use bitmaps? "Most of the time"? "In not-too-large repository?"
