Raspberry Pi Zero W (以下RPi0W)はBroadcom BCM2835というSoCを搭載していて、 ARM1176JZF-S (ARMv6系ARM11) というシングルコアのCPUが1GHzで動くらしい。無線無しモデルのRaspberry Pi Zeroも同じ。
RaspbianでCPU情報を見る
pi@raspberrypi:~ $ lscpu Architecture: armv6l Byte Order: Little Endian CPU(s): 1 On-line CPU(s) list: 0 Thread(s) per core: 1 Core(s) per socket: 1 Socket(s): 1 Model: 7 Model name: ARMv6-compatible processor rev 7 (v6l) CPU max MHz: 1000.0000 CPU min MHz: 700.0000 BogoMIPS: 697.95 Flags: half thumb fastmult vfp edsp java tls
CPUの最大周波数が1000.0000になってるけどARM1176JZF-Sって990MHzじゃなかったかしら。数値丸めてる？
UnixBenchで計測
pi@raspberrypi:~ $ ./UnixBench/Run -c 1 -c 2 -c 4
make all
make[1]: Entering directory '/home/pi/UnixBench'
Checking distribution of files
./pgms exists
./src exists
./testdir exists
./tmp exists
./results exists
make[1]: Leaving directory '/home/pi/UnixBench'
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
sh: 1: 3dinfo: not found
# # # # # # # ##### ###### # # #### # #
# # ## # # # # # # # ## # # # # #
# # # # # # ## ##### ##### # # # # ######
# # # # # # ## # # # # # # # # #
# # # ## # # # # # # # ## # # # #
#### # # # # # ##### ###### # # #### # #
Version 5.1.3 Based on the Byte Magazine Unix Benchmark
Multi-CPU version Version 5 revisions by Ian Smith,
Sunnyvale, CA, USA
January 13, 2011 johantheghost at yahoo period com
Wide character in print at ./Run line 1511.
Wide character in printf at ./Run line 1542.
Use of uninitialized value in printf at ./Run line 1379.
Use of uninitialized value in printf at ./Run line 1380.
Use of uninitialized value in printf at ./Run line 1589.
Use of uninitialized value in printf at ./Run line 1590.
1 x Dhrystone 2 using register variables 1 2 3 4 5 6 7 8 9 10
1 x Double-Precision Whetstone 1 2 3 4 5 6 7 8 9 10
1 x Execl Throughput 1 2 3
1 x File Copy 1024 bufsize 2000 maxblocks 1 2 3
1 x File Copy 256 bufsize 500 maxblocks 1 2 3
1 x File Copy 4096 bufsize 8000 maxblocks 1 2 3
1 x Pipe Throughput 1 2 3 4 5 6 7 8 9 10
1 x Pipe-based Context Switching 1 2 3 4 5 6 7 8 9 10
1 x Process Creation 1 2 3
1 x System Call Overhead 1 2 3 4 5 6 7 8 9 10
1 x Shell Scripts (1 concurrent) 1 2 3
1 x Shell Scripts (8 concurrent) 1 2 3
Wide character in printf at ./Run line 1484.
2 x Dhrystone 2 using register variables 1 2 3 4 5 6 7 8 9 10
2 x Double-Precision Whetstone 1 2 3 4 5 6 7 8 9 10
2 x Execl Throughput 1 2 3
2 x File Copy 1024 bufsize 2000 maxblocks 1 2 3
2 x File Copy 256 bufsize 500 maxblocks 1 2 3
2 x File Copy 4096 bufsize 8000 maxblocks 1 2 3
2 x Pipe Throughput 1 2 3 4 5 6 7 8 9 10
2 x Pipe-based Context Switching 1 2 3 4 5 6 7 8 9 10
2 x Process Creation 1 2 3
2 x System Call Overhead 1 2 3 4 5 6 7 8 9 10
2 x Shell Scripts (1 concurrent) 1 2 3
2 x Shell Scripts (8 concurrent) 1 2 3
Wide character in printf at ./Run line 1484.
4 x Dhrystone 2 using register variables 1 2 3 4 5 6 7 8 9 10
4 x Double-Precision Whetstone 1 2 3 4 5 6 7 8 9 10
4 x Execl Throughput 1 2 3
4 x File Copy 1024 bufsize 2000 maxblocks 1 2 3
4 x File Copy 256 bufsize 500 maxblocks 1 2 3
4 x File Copy 4096 bufsize 8000 maxblocks 1 2 3
4 x Pipe Throughput 1 2 3 4 5 6 7 8 9 10
4 x Pipe-based Context Switching 1 2 3 4 5 6 7 8 9 10
4 x Process Creation 1 2 3
4 x System Call Overhead 1 2 3 4 5 6 7 8 9 10
4 x Shell Scripts (1 concurrent) 1 2 3
4 x Shell Scripts (8 concurrent) 1 2 3
Wide character in printf at ./Run line 1484.
========================================================================
BYTE UNIX Benchmarks (Version 5.1.3)
System: raspberrypi: GNU/Linux
OS: GNU/Linux -- 4.9.41+ -- #1023 Tue Aug 8 15:47:12 BST 2017
Machine: armv6l (unknown)
Language: en_US.utf8 (charmap="ANSI_X3.4-1968", collate="ANSI_X3.4-1968")
CPU 0: ARMv6-compatible processor rev 7 (v6l) (0.0 bogomips)
15:40:32 up 3 min, 3 users, load average: 0.90, 0.85, 0.38; runlevel 5
------------------------------------------------------------------------
Benchmark Run: 日 9月 03 2017 15:40:32 - 16:10:03
1 CPU in system; running 1 parallel copy of tests
Dhrystone 2 using register variables 2279562.3 lps (10.0 s, 7 samples)
Double-Precision Whetstone 462.4 MWIPS (10.0 s, 7 samples)
Execl Throughput 236.2 lps (29.9 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 45718.5 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 14660.5 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 119375.5 KBps (30.0 s, 2 samples)
Pipe Throughput 186043.5 lps (10.0 s, 7 samples)
Pipe-based Context Switching 27950.5 lps (10.0 s, 7 samples)
Process Creation 628.8 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 542.7 lpm (60.1 s, 2 samples)
Shell Scripts (8 concurrent) 69.8 lpm (60.2 s, 2 samples)
System Call Overhead 469639.0 lps (10.0 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 2279562.3 195.3
Double-Precision Whetstone 55.0 462.4 84.1
Execl Throughput 43.0 236.2 54.9
File Copy 1024 bufsize 2000 maxblocks 3960.0 45718.5 115.5
File Copy 256 bufsize 500 maxblocks 1655.0 14660.5 88.6
File Copy 4096 bufsize 8000 maxblocks 5800.0 119375.5 205.8
Pipe Throughput 12440.0 186043.5 149.6
Pipe-based Context Switching 4000.0 27950.5 69.9
Process Creation 126.0 628.8 49.9
Shell Scripts (1 concurrent) 42.4 542.7 128.0
Shell Scripts (8 concurrent) 6.0 69.8 116.3
System Call Overhead 15000.0 469639.0 313.1
========
System Benchmarks Index Score 113.6
------------------------------------------------------------------------
Benchmark Run: 日 9月 03 2017 16:10:03 - 16:41:23
1 CPU in system; running 2 parallel copies of tests
Dhrystone 2 using register variables 2377183.7 lps (10.1 s, 7 samples)
Double-Precision Whetstone 913.7 MWIPS (9.9 s, 7 samples)
Execl Throughput 247.5 lps (29.8 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 45899.5 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 14610.9 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 119704.5 KBps (30.0 s, 2 samples)
Pipe Throughput 180469.6 lps (10.1 s, 7 samples)
Pipe-based Context Switching 25944.8 lps (10.0 s, 7 samples)
Process Creation 608.2 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 536.9 lpm (60.1 s, 2 samples)
Shell Scripts (8 concurrent) 68.7 lpm (61.2 s, 2 samples)
System Call Overhead 476431.6 lps (10.1 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 2377183.7 203.7
Double-Precision Whetstone 55.0 913.7 166.1
Execl Throughput 43.0 247.5 57.5
File Copy 1024 bufsize 2000 maxblocks 3960.0 45899.5 115.9
File Copy 256 bufsize 500 maxblocks 1655.0 14610.9 88.3
File Copy 4096 bufsize 8000 maxblocks 5800.0 119704.5 206.4
Pipe Throughput 12440.0 180469.6 145.1
Pipe-based Context Switching 4000.0 25944.8 64.9
Process Creation 126.0 608.2 48.3
Shell Scripts (1 concurrent) 42.4 536.9 126.6
Shell Scripts (8 concurrent) 6.0 68.7 114.5
System Call Overhead 15000.0 476431.6 317.6
========
System Benchmarks Index Score 119.6
------------------------------------------------------------------------
Benchmark Run: 日 9月 03 2017 16:41:23 - 17:17:00
1 CPU in system; running 4 parallel copies of tests
Dhrystone 2 using register variables 2365565.8 lps (10.1 s, 7 samples)
Double-Precision Whetstone 1836.2 MWIPS (10.0 s, 7 samples)
Execl Throughput 247.9 lps (29.3 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 42586.5 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 13446.9 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 113641.8 KBps (30.0 s, 2 samples)
Pipe Throughput 178788.4 lps (10.1 s, 7 samples)
Pipe-based Context Switching 23390.6 lps (10.1 s, 7 samples)
Process Creation 609.8 lps (30.1 s, 2 samples)
Shell Scripts (1 concurrent) 531.9 lpm (60.3 s, 2 samples)
Shell Scripts (8 concurrent) 66.4 lpm (61.4 s, 2 samples)
System Call Overhead 472401.4 lps (10.1 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 2365565.8 202.7
Double-Precision Whetstone 55.0 1836.2 333.9
Execl Throughput 43.0 247.9 57.7
File Copy 1024 bufsize 2000 maxblocks 3960.0 42586.5 107.5
File Copy 256 bufsize 500 maxblocks 1655.0 13446.9 81.3
File Copy 4096 bufsize 8000 maxblocks 5800.0 113641.8 195.9
Pipe Throughput 12440.0 178788.4 143.7
Pipe-based Context Switching 4000.0 23390.6 58.5
Process Creation 126.0 609.8 48.4
Shell Scripts (1 concurrent) 42.4 531.9 125.4
Shell Scripts (8 concurrent) 6.0 66.4 110.7
System Call Overhead 15000.0 472401.4 314.9
========
System Benchmarks Index Score 122.9
ということで、インデックススコアはシングルで113.6、4パラレルで122.9ということだった。僅かな差だけど4スレッドの方が数値良いんだ・・・
UnixBench結果を比較
せっかくなので過去に計測したNanoPi NEO, NEO2とも比較してみた。
NanoPi NEO(1.2GHz時)はシングルで197.4、4パラレルで536.4だったので、インデックススコアの数値で比較するとRPi0WはそれぞれNanoPi NEO(無印)の58%と 23%という結果。
NanoPi NEO2ではシングルで298.9、４パラレルで771.2ということで、インデックススコアの数値で比較するとRPi0WはそれぞれNanoPi NEO2の38%と16%というとても寂しい結果となった。
RPi0Wはシングルコア・シングルスレッドなCPUなので4パラレルでは数値が上がらずかなり非力に見える。
でも、発熱少ないから冷却はあまり意識しなくて良さそう。それに用途さえ間違えなければ性能としては十分。
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