> Thanks for the suggestion. This is much cleaner than to use binary parameter. > > Just want to make sure I understand it correctly about the orginal hitrate: > you want to retire the hitrate in PRED_BUILTIN_EXPECT and always use > the one specified in the biniltin-expect-probability parameter.
Yes. > > Should I use 90% as the default? It's hard to fit current value 0.9996 > in percent form. Yes, 90% seems fine. The original value was set quite arbitrarily and no real performance study was made as far as I know except yours. I think users that are sure they use expect to gueard completely cold edges may just use 100% instead of 0.9996, so I would not worry much about the precision. Honza > > -Rong > > > > OK with that change. > > > > Honza