[merge] commit benchmarks, small tweak to tuned_gzip.py

[John Arbash Meinel]

I've done a little bit of work on trying to tune commit, and in the
interest of continuous integration, I'd like to at least get the
benchmarks added, and possibly a couple small tweaks to tuned_gzip.py

The gzip changes have only a small effect on performance, probably
within the noise margin (<1s / 45s on my machine).

However, when running with --lsprof, function calls appear more
expensive than they really are so it looks a bit better there.

I'm more concerned about the benchmark additions, so I'll remove the
gzip tweaks if people don't like them.

John
=:->
-------------- next part --------------
A non-text attachment was scrubbed...
Name: commit-perf-1.diff
Type: text/x-patch
Size: 5047 bytes
Desc: not available
Url : https://lists.ubuntu.com/archives/bazaar/attachments/20060816/3bdcebb8/attachment.bin 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 254 bytes
Desc: OpenPGP digital signature
Url : https://lists.ubuntu.com/archives/bazaar/attachments/20060816/3bdcebb8/attachment.pgp