on signals i can say that vala uses to call signals by name. vala should generate g_signal_emit() instead of g_signal_emit_by_name(). can you do a benchmark with this and tell us the performance boost?
probably in type checking vala can do a better job at compile time.. but i should look some more code to talk.. the ref/unref performance penalty can only be fixed with a garbage collector, or just delegating all these tasks to a separated thread, or use slices to alloc/free.. but this is more or less what a decent gc does. --pancake On Jan 30, 2011, at 7:55 PM, Aleksander Wabik <[email protected]> wrote: > Hi All, > > I've prepared a little benchmark measuring Vala object system > performance ( http://gitorious.org/vala-object-benchmarks ) > > - object creation and destruction > - method, virtual method, interface method, signal, delegate, delegate > from a closure calling times > - type checking > - threading locks > > This benchmark is not intended to measure general performance (we have > vala benchmarks in http://code.google.com/p/vala-benchmarks/ for this), > but just to measure object system performance. From what I've seen: > > - type checking 2 times slower than in Mono > - threading (locks) in vala beats mono easily - 19 seconds vs 50 > seconds!! > - object creation/destruction suck > - setting/reading property or field beat Mono easily, but I think it's > the matter of compiler optimization; but in classes inheriting from > GObject setters are very expensive (due to issuing a signal) > - calling methods, virtual methods, delegates, lambdas - vala beats > mono, but slightly > - interface methods, signals - we really suck, and there's no excuse > for this. I guess that it can't be fixed in glib, but in dova...? > - ref/unref - we really suck > - weak ref/unref - we beat Mono easily, I guess that even if the > pointer assignment was not optimized out by a compiler we'd do this. > Mono is surprisingly bad at this. > > I guess that at least some of the vala performance drawbacks can be > fixed in dova, as it's a total redesignment of the object system, > true? > > If some of you would like to add some benchmarks / fix something in the > existing ones, please do this, and have fun with the code that I made ;) > > best regards, > > -- > Mój klucz publiczny o identyfikatorze 1024D/E12C5A4C znajduje się na > serwerze hkp://keys.gnupg.net > > My public key with signature 1024D/E12C5A4C is on the server > hkp://keys.gnupg.net > _______________________________________________ > vala-list mailing list > [email protected] > http://mail.gnome.org/mailman/listinfo/vala-list _______________________________________________ vala-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/vala-list
