Performance issues when merging branches (1000+ files being merged takes 75~ seconds)

[Peter Arrenbrecht]

On Thu, Jun 17, 2010 at 5:30 PM, Idan K <idan at kamarafamily.com> wrote:
> I found another interesting thing, don't know if it helps: I took Mercurial
> 1.5.4 source without history, put it in a new repository and ran the test
> again, the runtime dropped down to about 15 seconds. Still quite a bit but
> doesn't compare to the one with all the history (I attached the output of
> the merge).

In this case ancestor computation is trivial, so the main problem goes away.
-parren