http://bugzilla.novell.com/show_bug.cgi?id=565637
http://bugzilla.novell.com/show_bug.cgi?id=565637#c0 Summary: Memory allocation very slow Classification: Mono Product: Mono: Runtime Version: 2.6.x Platform: All OS/Version: All Status: NEW Severity: Normal Priority: P5 - None Component: GC AssignedTo: [email protected] ReportedBy: [email protected] QAContact: [email protected] Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/532.0 (KHTML, like Gecko) Chrome/3.0.195.38 Safari/532.0 Memory allocation is very slow (used Included Boehm GC). Instructions like "newobj", "newarr", "box" are slower than ms implementation in more than 10 times; Reproducible: Always Steps to Reproduce: 1. 2. 3. Results for Windows x86 .NET, Windows x86 Mono, RHEL5.3 x64 Mono D:\Projects\TestMono\DynLoad\bin\Debug>mono TestMono.exe New[]: 4,41891294741494 Mop/s New: 0,263157894736842 Mop/s Set: 64,1025641025641 Mop/s Get: 30,4878048780488 Mop/s Call: 476,190476190476 Mop/s Box: 6,02772754671489 Mop/s Loop: 1111,11111111111 Mop/s D:\Projects\TestMono\DynLoad\bin\Debug>TestMono.exe New[]: 39,3700787401575 Mop/s New: 0,714285714285714 Mop/s Set: 77,5193798449612 Mop/s Get: 82,6446280991736 Mop/s Call: 144,927536231884 Mop/s Box: 23,2018561484919 Mop/s Loop: 106,382978723404 Mop/s [r...@localhost TestMono]# mono TestMono.exe New[]: 6,54878847413229 Mop/s New: 0,238095238095238 Mop/s Set: 58,4795321637427 Mop/s Get: 35,5871886120996 Mop/s Call: 434,782608695652 Mop/s Box: 18,5185185185185 Mop/s Loop: 434,782608695652 Mop/s Code for each result line seems like: const int count = 10000000; const int size = 3; var sw = new Stopwatch(); sw.Start(); for (var i = 0; i < count; i++) { arr = TestSome(size); } sw.Stop(); Console.WriteLine("Some: {0} Mop/s", count / 1000.0 / sw.ElapsedMilliseconds); sw.Reset(); Method bodies are: New[]: return new int[size] New: return new object(); Set: arr[i] = value; Get: return arr[i]; (return Type is Int32) Call: empty method Box: return (object)value; (value is Int32) Loop: empty loop without calling any method -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the QA contact for the bug. _______________________________________________ mono-bugs maillist - [email protected] http://lists.ximian.com/mailman/listinfo/mono-bugs
