On Saturday, 9 September 2017 17:16:24 -03 Sean Harmer wrote: > Yes, vtune shows the line > > static_cast<ExternalRefCountWithContiguousData *>(::operator > new(sizeof(ExternalRefCountWithContiguousData))); > > is the bottleneck in this particular test case, qt3d/tests/manual/bigscene- > cpp. I maybe able to reduce the calls to this by a small constant factor but > I'm not sure yet, need to do some more digging/experimenting. So using a > pool seemed like a viable approach to reducing this bottleneck. > > Granted, this is an extreme stress test (1k QEntities, each with 2 x > QPropertyAnimations) but it makes a nice one to profile.
Well, if you microbenchmark, then memory allocation is almost always a bottleneck. I'd be more interested in real-world numbers. But anyway, I don't see a way to pool the private pointers. You always get a new one if you add a new pointer to an object. -- Thiago Macieira - thiago.macieira (AT) intel.com Software Architect - Intel Open Source Technology Center _______________________________________________ Development mailing list [email protected] http://lists.qt-project.org/mailman/listinfo/development
