!Mac miniが遅い．．．？
Mac miniがパフォーマンスの割に遅い気がする...
と，Facebookに，つい書いてしまったら，いろんな人からコメントもらったのだけど，
コンピュータに関係する仕事をしているのだから，
ぼやく前にベンチマークくらい取るべきだったかな，と．
で，xbenchであわてて計ってみた結果が次の通り．

{{ref_image xbench.png}}
ちなみに，タスク殺して再起動した後の結果ではあるけど，
バックグラウンドタスクはいろいろ走る中での結果なので，そう正確なものではない．

この結果をみると，Mac miniが遅いというのは，大方の予想通りディスク性能の差がみえているのではないか，
という予想があたりそうではあるのだけれど，そんなに誰がディスク読み書きしてるのだろうか...

ちなみに，"User Interface"という項目でMacBook ProがMacBook Airを上回っているのだけど，
これは何だろう？

計測したマシンは，
,型名,CPU,メモリ,備考
,MacBook Air 2012 mid, Core i5 1.8GHz, 8GB 1600MHz DDR3,
,Mac mini 2011 mid, Core i7 2.7GHz, 4GB 1333MHz DDR3,
,MacBook Pro 2009 mid, Core2 Duo 2.26GHz, 8GB 1333MHz DDR3,ディスクはSSDに換装


以下，生データ
 Results	325.14	
 	System Info		
 		Xbench Version		1.3
 		System Version		10.7.5 (11G56)
 		Physical RAM		8192 MB
 		Model		MacBookAir5,2
 		Drive Type		APPLE SSD TS128E
 	CPU Test	227.85	
 		GCD Loop	298.74	15.75 Mops/sec
 		Floating Point Basic	212.48	5.05 Gflop/sec
 		vecLib FFT	139.33	4.60 Gflop/sec
 		Floating Point Library	430.20	74.91 Mops/sec
 	Memory Test	558.17	
 		System	553.07	
 			Allocate	2138.36	7.85 Malloc/sec
 			Fill	384.01	18671.38 MB/sec
 			Copy	425.08	8779.86 MB/sec
 		Stream	563.37	
 			Copy	552.33	11408.22 MB/sec
 			Scale	558.37	11535.69 MB/sec
 			Add	575.58	12261.06 MB/sec
 			Triad	567.75	12145.67 MB/sec
 	Quartz Graphics Test	331.33	
 		Line	313.82	20.89 Klines/sec [50% alpha]
 		Rectangle	421.94	125.97 Krects/sec [50% alpha]
 		Circle	310.77	25.33 Kcircles/sec [50% alpha]
 		Bezier	293.14	7.39 Kbeziers/sec [50% alpha]
 		Text	344.25	21.53 Kchars/sec
 	OpenGL Graphics Test	241.05	
 		Spinning Squares	241.05	305.79 frames/sec
 	User Interface Test	121.65	
 		Elements	121.65	558.32 refresh/sec
 	Disk Test	471.79	
 		Sequential	277.22	
 			Uncached Write	785.00	481.98 MB/sec [4K blocks]
 			Uncached Write	498.17	281.86 MB/sec [256K blocks]
 			Uncached Read	106.17	31.07 MB/sec [4K blocks]
 			Uncached Read	578.51	290.76 MB/sec [256K blocks]
 		Random	1582.43	
 			Uncached Write	2133.79	225.89 MB/sec [4K blocks]
 			Uncached Write	938.35	300.40 MB/sec [256K blocks]
 			Uncached Read	3155.37	22.36 MB/sec [4K blocks]
			Uncached Read	1478.22	274.29 MB/sec [256K blocks]

 Results	357.35	
 	System Info		
 		Xbench Version		1.3
 		System Version		10.7.4 (11E53)
 		Physical RAM		4096 MB
 		Model		Macmini5,2
 		Drive Type		TOSHIBA MK5065GSXF
 	CPU Test	248.80	
 		GCD Loop	327.70	17.27 Mops/sec
 		Floating Point Basic	190.10	4.52 Gflop/sec
 		vecLib FFT	171.87	5.67 Gflop/sec
 		Floating Point Library	513.57	89.43 Mops/sec
 	Memory Test	610.89	
 		System	721.85	
 			Allocate	2392.30	8.79 Malloc/sec
 			Fill	446.84	21726.22 MB/sec
 			Copy	666.66	13769.69 MB/sec
 		Stream	529.50	
 			Copy	520.77	10756.35 MB/sec
 			Scale	503.89	10410.12 MB/sec
 			Add	557.06	11866.47 MB/sec
 			Triad	539.26	11536.02 MB/sec
 	Quartz Graphics Test	394.02	
 		Line	363.25	24.18 Klines/sec [50% alpha]
 		Rectangle	497.50	148.53 Krects/sec [50% alpha]
 		Circle	289.57	23.60 Kcircles/sec [50% alpha]
 		Bezier	274.91	6.93 Kbeziers/sec [50% alpha]
 		Text	1196.29	74.83 Kchars/sec
 	OpenGL Graphics Test	374.59	
 		Spinning Squares	374.59	475.19 frames/sec
 	User Interface Test	389.33	
 		Elements	389.33	1.79 Krefresh/sec
 	Disk Test	39.72	
 		Sequential	61.80	
 			Uncached Write	50.39	30.94 MB/sec [4K blocks]
 			Uncached Write	62.85	35.56 MB/sec [256K blocks]
 			Uncached Read	57.17	16.73 MB/sec [4K blocks]
 			Uncached Read	87.18	43.81 MB/sec [256K blocks]
 		Random	29.27	
 			Uncached Write	12.14	1.28 MB/sec [4K blocks]
 			Uncached Write	61.12	19.57 MB/sec [256K blocks]
 			Uncached Read	46.86	0.33 MB/sec [4K blocks]
 			Uncached Read	60.32	11.19 MB/sec [256K blocks]

 Results	186.99	
 	System Info		
 		Xbench Version		1.3
 		System Version		10.7.5 (11G56)
 		Physical RAM		8192 MB
 		Model		MacBookPro5,5
 		Drive Type		INTEL SSDSC2CT240A3
 	CPU Test	158.79	
 		GCD Loop	264.75	13.96 Mops/sec
 		Floating Point Basic	126.91	3.02 Gflop/sec
 		vecLib FFT	107.37	3.54 Gflop/sec
 		Floating Point Library	236.92	41.26 Mops/sec
 	Memory Test	188.70	
 		System	254.74	
 			Allocate	1195.50	4.39 Malloc/sec
 			Fill	172.83	8403.54 MB/sec
 			Copy	194.01	4007.29 MB/sec
 		Stream	149.85	
 			Copy	140.16	2894.87 MB/sec
 			Scale	141.96	2932.82 MB/sec
 			Add	159.77	3403.55 MB/sec
 			Triad	159.86	3419.73 MB/sec
 	Quartz Graphics Test	254.43	
 		Line	203.07	13.52 Klines/sec [50% alpha]
 		Rectangle	273.02	81.51 Krects/sec [50% alpha]
 		Circle	206.70	16.85 Kcircles/sec [50% alpha]
 		Bezier	199.43	5.03 Kbeziers/sec [50% alpha]
 		Text	824.73	51.59 Kchars/sec
 	OpenGL Graphics Test	106.35	
 		Spinning Squares	106.35	134.91 frames/sec
 	User Interface Test	240.33	
 		Elements	240.33	1.10 Krefresh/sec
 	Disk Test	333.76	
 		Sequential	199.92	
 			Uncached Write	303.17	186.14 MB/sec [4K blocks]
 			Uncached Write	282.82	160.02 MB/sec [256K blocks]
 			Uncached Read	94.46	27.64 MB/sec [4K blocks]
 			Uncached Read	386.60	194.30 MB/sec [256K blocks]
 		Random	1009.72	
 			Uncached Write	1475.24	156.17 MB/sec [4K blocks]
 			Uncached Write	547.23	175.19 MB/sec [256K blocks]
 			Uncached Read	1942.02	13.76 MB/sec [4K blocks]
 			Uncached Read	1062.34	197.12 MB/sec [256K blocks]