perf: restore lazyindex hack
This hack (and the module it lives in) exist so that performance can
be compared across different hg versions.
--- a/contrib/perf.py Tue Jan 18 15:55:48 2011 -0600
+++ b/contrib/perf.py Tue Jan 18 15:55:49 2011 -0600
@@ -81,6 +81,7 @@
def perfindex(ui, repo):
import mercurial.revlog
+ mercurial.revlog._prereadsize = 2**24 # disable lazy parser in old hg
n = repo["tip"].node()
def d():
repo.invalidate()