On Tue, 2006-07-18 at 11:40 +0300, Jorn Baayen wrote: > 34 12.6866 libgobject-2.0.so.0.1000.3 g_type_is_a > 31 11.5672 libgobject-2.0.so.0.1000.3 > g_type_check_instance_is_a
Speaking of type checks... When we saw that pango-profile was taking a nontrivial amount of time doing type checks, digging deeper showed that those checks were happening in a single hot spot. There was a critical function (got called once for each character) doing an unnecessary type check. Removing that check made type checks disappear from the profile (even though they are still being done in other, non-critical parts of the code). It would be good to know where those expensive type checks are coming from. If that 12.6% is split among a couple of "hot" places, we can probably remove them to good effect. Your mission, should you decide to accept it, is to figure out what part of the code is doing the bulk of the type checks, and to kill it swiftly and cleanly. Federico _______________________________________________ Performance-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/performance-list
