MAMEWorld Forums - EmuChat - 4th Gen i7 MAME benchmarks coming soon...

blitz Average speed: 283.25% (89 seconds) 258
dolphin Average speed: 48.90% (89 seconds) 38
gauntleg Average speed: 349.74% (89 seconds) 370
gradius4 Average speed: 197.50% (89 seconds) 236
propcycl Average speed: 228.13% (89 seconds) 259
radikalb Average speed: 219.24% (89 seconds) 210
scud Average speed: 120.97% (89 seconds) 149
starsldr Average speed: 103.26% (89 seconds) 85

blitz Average speed: 304.57% (89 seconds) 258
dolphin Average speed: 45.67% (89 seconds) 38
gauntleg Average speed: 403.06% (89 seconds) 370
gradius4 Average speed: 235.19% (89 seconds) 236
propcycl Average speed: 251.73% (89 seconds) 259
radikalb Average speed: 257.34% (89 seconds) 210
scud Average speed: 140.89% (89 seconds) 149
starsldr average speed: 82.68% (89 seconds) 85

> Cool, thanks. I'll add these to the bench page and credit the machines appropriately;
> that got cut when I purged the older bench runs. The 4.8Ghz was RB's.
>
> Interesting the overall speed drop though from .141 to .148 when running on the
> Haswell.

I wondering about that myself, I thought it might have be the builds I was using so I when back and got the official MAME DEV builds of 0.141 and 0.148, same results, but I also notice that in game result we coming back at less than 100% for game running at over 200% using -bench command. So started look and got very distracted by the whole thing, but it look like the slow down started between 0.145 and 0.146 as you can see by the benchmarks below.

-bench 90 results:

Rom Name:	 0.141	 0.142 	 0.143 	 0.144 	 0.145	 0.146 	 0.147	 0.148

blitz		301.98	300.41	309.94	295.94	303.58	270.47	281.31	269.91
dolphin		 45.58	 45.43	 45.26	 44.36	 48.50	  5.79	 46.68	 40.74
gauntleg	407.80	413.61	420.10	392.98	417.84	334.68	341.01	356.73
gradius4	238.68	231.93	241.99	228.44	244.63	191.13	187.02	357.52
propcycl	250.51	255.59	253.63	223.01	221.50	219.31	227.60	227.67
radikalb	262.20	253.95	264.02	241.26	250.68	206.15	209.62	209.33
scud		140.89	152.58	159.40	144.97	150.78	127.66	129.80	191.38
starsldr	 82.19	 74.39	 94.84	 90.58	115.36	 96.49	101.94	102.37

The interest think is that MAME appears to develop a stutter between 0.145 and 0.146 as you can see for the in game benchmarks below.

-seconds_to_run 90 -skip_gameinfo Results:

Rom Name:	 0.141	 0.142 	 0.143 	 0.144 	 0.145	 0.146 	 0.147	 0.148

blitz		100.00	100.00	100.00	100.00	100.00	 98.64	 98.10	 99.77
dolphin		 39.70	 39.33	 39.76	 38.35	 42.36	  5.79	 40.83	 47.15
gauntleg	 99.90	 99.92	 99.87	 99.95	100.00	 99.75	 99.91	 99.96
gradius4	100.00	100.00	100.00	100.00	100.00	 98.89	 98.75	100.00
propcycl	100.00	100.00	100.00	100.00	100.00	 99.78	 99.83	 99.98
radikalb	100.00	100.00	100.00	100.00	100.00	 99.72	 99.78	100.00
scud		 95.72	 95.41	 95.50	 95.56	 95.58	 92.91	 93.24	 94.00
starsldr	 60.48	 56.33	 66.81	 64.79	 75.63	 69.23	 72.57	 72.85

So it looks like something changed in between 0.145 & 0.146 that is causes MAME to have micro stutters that and slowing down MAME as a whole. It would be interest to know what could have changed to have such a universal effect on MAME.

Update: did a quick check of the 0.145u builds, look like the slow down start with 0.145u1 .

Sorry guys I wasted the day messing this this stuff, so no overclock benchmarks today.

Edited by taz-nz (05/25/13 04:36 PM)

Rom Name: 0.141 0.141 Gain % 0.145 0.148

blitz 258 369.40 43% 371.79 318.26
dolphin 38 49.36 30% 52.12 50.44
gauntleg 370 503.17 36% 518.23 433.82
gradius4 236 290.16 23% 300.90 224.98
propcycl 259 303.46 17% 268.93 276.52
radikalb 210 319.78 52% 309.25 248.80
scud 149 174.07 17% 184.09 157.41
starsldr 85 101.34 19% 141.73 118.57