Nbench e o Raspberry Pi Model B versão 2

Raspberry Pi Model B 2 - Raspberrypi.org

Raspberry Pi Model B 2 – Raspberrypi.org

Voltámos a utilizar o BYTE UNIX benchmark suite ou NBench, mas desta vez para medir o desempenho do Raspberry Pi Model B versão 2 (RPi 2). Como tinhamos dito aqui quando medimos o desempenho do RPi B, o Nbench foi criado por volta de 1990 para a revista Byte com o objetivo de medir o desempenho e tem a vantagem de já ter sido usado com tantos sistemas que podemos depois relacionar o seu desempenho com máquinas do passado.

Desta vez, em lugar de um core temos quatro, por isso é feito um conjunto de testes a um core e depois com o processamento paralelo em quatro cores. Por isso, desta vez há dois conjuntos de testes. Agora vamos publicar os resultados.

BYTE UNIX Benchmarks (Version 5.1.3)

System: osmc: GNU/Linux
OS: GNU/Linux — 4.3.0-10-osmc — #1 SMP PREEMPT Sun Nov 29 14:06:50 UTC 2015
Machine: armv7l (unknown)
Language: en_US.utf8 (charmap=”ANSI_X3.4-1968″, collate=”ANSI_X3.4-1968″)
CPU 0/1/2/3: ARMv7 Processor rev 5 (v7l) (0.0 bogomips)

21:32:01 up 3:05, 1 user, load average: 0.24, 0.14, 0.27; runlevel 5

Benchmark Run: Sun Jan 03 2016 21:32:01 – 22:00:05
4 CPUs in system; running 1 parallel copy of tests

Tipo de teste Resultado Unidade Duração testes
Dhrystone 2 using register variables 2894521.7 lps 10.0 s 7
Double-Precision Whetstone 418.1 MWIPS 9.9 s 7
Execl Throughput 449.9 lps 29.9 s 2
File Copy 1024 bufsize 2000 maxblocks 73731.0 KBps 30.0 s 2
File Copy 256 bufsize 500 maxblocks 22420.5 KBps 30.0 s 2
File Copy 4096 bufsize 8000 maxblocks 179668.3 KBps 30.0 s 2
Pipe Throughput 214199.6 lps 10.0 s 7
Pipe-based Context Switching 28599.2 lps 10.0 s 7
Process Creation 1109.0 lps 30.0 s 2
Shell Scripts (1 concurrent) 1188.4 lpm 60.1 s 2
Shell Scripts (8 concurrent) 316.1 lpm 60.2 s 2
System Call Overhead 459926.0 lps 10.0 s 7

Resultados indexados

System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 2894521.7 248.0
Double-Precision Whetstone 55.0 418.1 76.0
Execl Throughput 43.0 449.9 104.6
File Copy 1024 bufsize 2000 maxblocks 3960.0 73731.0 186.2
File Copy 256 bufsize 500 maxblocks 1655.0 22420.5 135.5
File Copy 4096 bufsize 8000 maxblocks 5800.0 179668.3 309.8
Pipe Throughput 12440.0 214199.6 172.2
Pipe-based Context Switching 4000.0 28599.2 71.5
Process Creation 126.0 1109.0 88.0
Shell Scripts (1 concurrent) 42.4 1188.4 280.3
Shell Scripts (8 concurrent) 6.0 316.1 526.8
System Call Overhead 15000.0 459926.0 306.6

System Benchmarks Index Score 173.7

Benchmark Run: Sun Jan 03 2016 22:00:05 – 22:28:25
4 CPUs in system; running 4 parallel copies of tests

Tipo de teste Resultado Unidade Duração testes
Dhrystone 2 using register variables 11358891.2 lps 10.0 s 7
Double-Precision Whetstone 1670.9 MWIPS 10.0 s 7
Execl Throughput 1227.4 lps 29.9 s 2
File Copy 1024 bufsize 2000 maxblocks 100259.5 KBps 30.0 s 2
File Copy 256 bufsize 500 maxblocks 29721.5 KBps 30.0 s 2
File Copy 4096 bufsize 8000 maxblocks 244756.5 KBps 30.0 s 2
Pipe Throughput 831054.0 lps 10.0 s 7
Pipe-based Context Switching 111659.6 lps 10.0 s 7
Process Creation 1952.2 lps 30.0 s 2
Shell Scripts (1 concurrent) 2467.6 lpm 60.1 s 2
Shell Scripts (8 concurrent) 344.4 lpm 60.4 s 2
System Call Overhead 1734253.4 lps 10.0 s 7

Resultados indexados para processamento paralelo com 4 core

System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 11358891.2 973.3
Double-Precision Whetstone 55.0 1670.9 303.8
Execl Throughput 43.0 1227.4 285.4
File Copy 1024 bufsize 2000 maxblocks 3960.0 100259.5 253.2
File Copy 256 bufsize 500 maxblocks 1655.0 29721.5 179.6
File Copy 4096 bufsize 8000 maxblocks 5800.0 244756.5 422.0
Pipe Throughput 12440.0 831054.0 668.0
Pipe-based Context Switching 4000.0 111659.6 279.1
Process Creation 126.0 1952.2 154.9
Shell Scripts (1 concurrent) 42.4 2467.6 582.0
Shell Scripts (8 concurrent) 6.0 344.4 574.0
System Call Overhead 15000.0 1734253.4 1156.2

System Benchmarks Index Score 402.5

 

Tags: ,

Deixar uma resposta

O seu endereço de email não será publicado. Campos obrigatórios marcados com *