Testing with git log performance on Linux tree I found this interesting and unexpected result:
$ time git log --parents --boundary --pretty=raw -z --log-size --topo-order HEAD > /dev/null 6.85user 0.20system 0:07.05elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+21142minor)pagefaults 0swaps
$ time git log --parents --boundary --pretty=raw -z --log-size HEAD > /dev/null 7.01user 0.09system 0:07.10elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+11128minor)pagefaults 0swaps
Although page faults are more or less the half, execution time is faster _with_ --topo-order option.
Someone could explain why?
Thanks Marco