CPU: Intel Pentium 4 @ 2.5GHz
Memory: 1GB

2.6.27-rc5-mm1 kernel, 300 patches uncommitted

pop/push ran a few times to heat the caches before running the
benchmarks.


Stable stgit (v0.14.3 + some fixes)

$ time stg pop -a

real	0m1.775s
user	0m0.956s
sys	0m0.724s

$ time stg push -a (fast-forward)

real	0m5.001s
user	0m1.844s
sys	0m2.860s

$ time stg push -a (no fast-forward)

real	1m27.133s
user	0m36.998s
sys	0m34.894s


Current stgit master (no stack log):

$ time stg pop -a

real	0m1.621s
user	0m0.820s
sys	0m0.688s

$ time stg push -a (fast-forward)

real	0m27.205s
user	0m8.741s
sys	0m16.849s

$ time stg push -a (no fast-forward)

real	2m8.209s
user	0m46.031s
sys	0m57.260s


kha/experimantal stgit (with stack log):

$ time stg pop -a

real	0m2.419s
user	0m1.144s
sys	0m1.132s

$ time stg push -a (fast-forward)

real	0m29.594s
user	0m9.217s
sys	0m17.145s

$ time stg push -a (no fast-forward)

real	2m10.270s
user	0m50.919s
sys	1m2.088s