基本介绍
Sakura Pi RK3308B 是我们首款正式发售的SBC。
它是一款搭载 Rockchip RK3308B SoC 的低功耗、低成本开发板。
处理器
得益于 ARM® Cortex A35 处理器，使 RK3308B 具有 低功耗、低成本、低热量 等诸多优点。
在现代移动设备的处理器架构中，Cortex A35 因其高效能时而扮演 小核(能效核/E核)的角色，使系统在应对复杂任务与长时间待机间达到较好的平衡。
特征
TODO: 主板各个元器件的分布图介绍
Sakura Pi RK3308B 的基本配置参数如下
- 处理器: RK3308B
- 内存: DDR3 512M
- 无线WLAN: 支持IEEE 802.11a/b/g/n/ac,支持2.4GHz/5GHz频段
- 蓝牙: 支持 BLE4.2
- EMMC: 0/8/16G 容量可选
- 指示灯: WS2812(SPI) * 4
- LCD: RGB666 接口
引脚定义
TODO: 需要补充
Sakura Pi RK3308B 具备与 Raspberry Pi Zero W 兼容的 40 Pin 引脚。 u-boot 和 kernel 默认使用 UART2 作为输出端口
基准测试
UnixBench
| CPU主频 | 单核跑分 | 多核跑分 |
|---|---|---|
| 1.0GHz | 172.2 | 563.4 |
| 1.3GHz | 210.3 | 671.9 |
1.0GHz UnixBench
========================================================================
BYTE UNIX Benchmarks (Version 5.1.3)
System: sakurapi-rk3308b: GNU/Linux
OS: GNU/Linux -- 6.12.23-current-rockchip64 -- #2 SMP PREEMPT Thu Apr 10 20:39:41 HKT 2025
Machine: aarch64 (unknown)
Language: en_US.utf8 (charmap="UTF-8", collate="UTF-8")
CPU 0: ARM Cortex-A35 (48.0 bogomips)
CPU Features: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpuid
CPU 1: ARM Cortex-A35 (48.0 bogomips)
CPU Features: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpuid
CPU 2: ARM Cortex-A35 (48.0 bogomips)
CPU Features: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpuid
CPU 3: ARM Cortex-A35 (48.0 bogomips)
CPU Features: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpuid
19:08:56 up 56 min, 1 user, load average: 0.73, 0.73, 0.42; runlevel 2025-04-11
------------------------------------------------------------------------
Benchmark Run: Fri Apr 11 2025 19:08:56 - 19:37:02
4 CPUs in system; running 1 parallel copy of tests
Dhrystone 2 using register variables 4390531.8 lps (10.0 s, 7 samples)
Double-Precision Whetstone 1204.4 MWIPS (10.0 s, 7 samples)
Execl Throughput 288.4 lps (29.9 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 93939.0 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 27259.1 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 244850.1 KBps (30.0 s, 2 samples)
Pipe Throughput 221670.8 lps (10.0 s, 7 samples)
Pipe-based Context Switching 17347.5 lps (10.0 s, 7 samples)
Process Creation 543.1 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 952.2 lpm (60.0 s, 2 samples)
Shell Scripts (8 concurrent) 290.6 lpm (60.1 s, 2 samples)
System Call Overhead 307830.4 lps (10.0 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 4390531.8 376.2
Double-Precision Whetstone 55.0 1204.4 219.0
Execl Throughput 43.0 288.4 67.1
File Copy 1024 bufsize 2000 maxblocks 3960.0 93939.0 237.2
File Copy 256 bufsize 500 maxblocks 1655.0 27259.1 164.7
File Copy 4096 bufsize 8000 maxblocks 5800.0 244850.1 422.2
Pipe Throughput 12440.0 221670.8 178.2
Pipe-based Context Switching 4000.0 17347.5 43.4
Process Creation 126.0 543.1 43.1
Shell Scripts (1 concurrent) 42.4 952.2 224.6
Shell Scripts (8 concurrent) 6.0 290.6 484.4
System Call Overhead 15000.0 307830.4 205.2
========
System Benchmarks Index Score 172.2
------------------------------------------------------------------------
Benchmark Run: Fri Apr 11 2025 19:37:02 - 20:05:16
4 CPUs in system; running 4 parallel copies of tests
Dhrystone 2 using register variables 17375717.0 lps (10.0 s, 7 samples)
Double-Precision Whetstone 4755.7 MWIPS (10.0 s, 7 samples)
Execl Throughput 893.7 lps (30.0 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 350019.2 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 106703.9 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 610322.2 KBps (30.0 s, 2 samples)
Pipe Throughput 877759.9 lps (10.0 s, 7 samples)
Pipe-based Context Switching 113403.0 lps (10.0 s, 7 samples)
Process Creation 1898.4 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 2244.3 lpm (60.1 s, 2 samples)
Shell Scripts (8 concurrent) 296.1 lpm (60.6 s, 2 samples)
System Call Overhead 1215141.6 lps (10.0 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 17375717.0 1488.9
Double-Precision Whetstone 55.0 4755.7 864.7
Execl Throughput 43.0 893.7 207.8
File Copy 1024 bufsize 2000 maxblocks 3960.0 350019.2 883.9
File Copy 256 bufsize 500 maxblocks 1655.0 106703.9 644.7
File Copy 4096 bufsize 8000 maxblocks 5800.0 610322.2 1052.3
Pipe Throughput 12440.0 877759.9 705.6
Pipe-based Context Switching 4000.0 113403.0 283.5
Process Creation 126.0 1898.4 150.7
Shell Scripts (1 concurrent) 42.4 2244.3 529.3
Shell Scripts (8 concurrent) 6.0 296.1 493.4
System Call Overhead 15000.0 1215141.6 810.1
========
System Benchmarks Index Score 563.4
1.3GHz UnixBench
========================================================================
BYTE UNIX Benchmarks (Version 5.1.3)
System: sakurapi-rk3308b: GNU/Linux
OS: GNU/Linux -- 6.12.23-current-rockchip64 -- #2 SMP PREEMPT Thu Apr 10 20:39:41 HKT 2025
Machine: aarch64 (unknown)
Language: en_US.utf8 (charmap="UTF-8", collate="UTF-8")
CPU 0: ARM Cortex-A35 (48.0 bogomips)
CPU Features: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpuid
CPU 1: ARM Cortex-A35 (48.0 bogomips)
CPU Features: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpuid
CPU 2: ARM Cortex-A35 (48.0 bogomips)
CPU Features: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpuid
CPU 3: ARM Cortex-A35 (48.0 bogomips)
CPU Features: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpuid
05:51:01 up 3 min, 1 user, load average: 0.36, 0.21, 0.10; runlevel 2025-04-12
------------------------------------------------------------------------
Benchmark Run: Sat Apr 12 2025 05:51:01 - 06:19:05
4 CPUs in system; running 1 parallel copy of tests
Dhrystone 2 using register variables 5640815.9 lps (10.0 s, 7 samples)
Double-Precision Whetstone 1548.9 MWIPS (10.1 s, 7 samples)
Execl Throughput 333.2 lps (29.9 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 116631.1 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 34717.5 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 283747.8 KBps (30.0 s, 2 samples)
Pipe Throughput 286177.6 lps (10.0 s, 7 samples)
Pipe-based Context Switching 22383.8 lps (10.0 s, 7 samples)
Process Creation 612.4 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 1111.3 lpm (60.0 s, 2 samples)
Shell Scripts (8 concurrent) 325.8 lpm (60.1 s, 2 samples)
System Call Overhead 395002.8 lps (10.0 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 5640815.9 483.4
Double-Precision Whetstone 55.0 1548.9 281.6
Execl Throughput 43.0 333.2 77.5
File Copy 1024 bufsize 2000 maxblocks 3960.0 116631.1 294.5
File Copy 256 bufsize 500 maxblocks 1655.0 34717.5 209.8
File Copy 4096 bufsize 8000 maxblocks 5800.0 283747.8 489.2
Pipe Throughput 12440.0 286177.6 230.0
Pipe-based Context Switching 4000.0 22383.8 56.0
Process Creation 126.0 612.4 48.6
Shell Scripts (1 concurrent) 42.4 1111.3 262.1
Shell Scripts (8 concurrent) 6.0 325.8 543.1
System Call Overhead 15000.0 395002.8 263.3
========
System Benchmarks Index Score 210.3
------------------------------------------------------------------------
Benchmark Run: Sat Apr 12 2025 06:19:05 - 06:47:14
4 CPUs in system; running 4 parallel copies of tests
Dhrystone 2 using register variables 22403396.8 lps (10.0 s, 7 samples)
Double-Precision Whetstone 6128.9 MWIPS (10.1 s, 7 samples)
Execl Throughput 977.2 lps (29.9 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 419419.9 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 136432.9 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 638890.6 KBps (30.0 s, 2 samples)
Pipe Throughput 1134168.3 lps (10.0 s, 7 samples)
Pipe-based Context Switching 145101.5 lps (10.0 s, 7 samples)
Process Creation 2031.2 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 2503.7 lpm (60.1 s, 2 samples)
Shell Scripts (8 concurrent) 330.8 lpm (60.5 s, 2 samples)
System Call Overhead 1565701.4 lps (10.0 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 22403396.8 1919.7
Double-Precision Whetstone 55.0 6128.9 1114.3
Execl Throughput 43.0 977.2 227.3
File Copy 1024 bufsize 2000 maxblocks 3960.0 419419.9 1059.1
File Copy 256 bufsize 500 maxblocks 1655.0 136432.9 824.4
File Copy 4096 bufsize 8000 maxblocks 5800.0 638890.6 1101.5
Pipe Throughput 12440.0 1134168.3 911.7
Pipe-based Context Switching 4000.0 145101.5 362.8
Process Creation 126.0 2031.2 161.2
Shell Scripts (1 concurrent) 42.4 2503.7 590.5
Shell Scripts (8 concurrent) 6.0 330.8 551.3
System Call Overhead 15000.0 1565701.4 1043.8
========
System Benchmarks Index Score 671.9
LLVMPipe GLSL
信息
GitHub 仓库 astefanutti/kms-glsl
kms-glsl 可以调用 GPU 渲染 glsl 着色器，但由于 RK3308B 并没有 GPU
这将导致 Linux 使用 LLVMPipe 强制进行软件渲染。
我们使用 LLVMPipe 去渲染 glsl 着色器，以CPU 1.3GHz的频率进行压力测试。在未加任何散热情况下，结温在140度左右。
