changelog: lazy decode description (API)...
changelog: lazy decode description (API)
Currently, changelog reading decodes read values. This is wasteful
because a lot of times consumers aren't interested in some of these
values.
This patch changes description decoding to occur in changectx as
needed.
revsets reading changelog entries appear to speed up slightly:
revset
#7: author(lmoscovicz)
plain
0) 0.906329
1) 0.872653
revset
#8: author(mpm)
plain
0) 0.903478
1) 0.878037
revset
#9: author(lmoscovicz) or author(mpm)
plain
0) 1.817855
1) 1.778680
revset
#10: author(mpm) or author(lmoscovicz)
plain
0) 1.837052
1) 1.764568
