使用U盘替代TF卡做树莓派系统盘+树莓派400UnixBench跑分_python

1 前言

TF卡坏了，使用手边的16G U盘给树莓派做个系统。

现在树莓派可以很方便的使用U盘做系统，我使用的工具是Raspberry Pi Images。

Raspberry Pi Images 下载官网：https://www.raspberrypi.com/software/

系统镜像：2022-04-04-raspios-bullseye-arm64

2 *** 作

1.点击选择烧录镜像，下拉点击使用其他镜像。

2.选择你要烧录的设备，比如我下面选的U盘。

3.点击初始化设置，就可以直接连上WIFI和设置密码了。

4.点击烧录就可以，U盘确实比tf卡要快。

系统会自动扩容，ssh连接后，sudo raspi-config 把vnc打开。

然后，使用vnc连接，在树莓派系统设置里面改一下中文，然后重启，基本的初始化就搞完了。

然后我发现，新的系统镜像python2已经被删除了，输入python输出的就是python3.

python2终究还是被淘汰了。

3 树莓派400进行UnixBench跑分 3.1 配置

配置：树莓派400 ，4核4线程
内存：4GB
硬盘：usb3.0-闪迪16GB-U盘
系统：2022-04-04-raspios-bullseye-arm64

3.2 Unixbench跑分

# 下载阿里云版本unixbench
wget https://github.com/aliyun/byte-unixbench/releases/download/v5.1.6/UnixBench-5.1.6.tar.gz
tar -zxvf UnixBench-5.1.6.tar.gz
cd UnixBench-5.1.6/UnixBench
./Run

大概1个小时左右，跑分结果（仅供参考）：

------------------------------------------------------------------------
Benchmark Run: Sun May 08 2022 16:56:14 - 17:24:30
4 CPUs in system; running 1 parallel copy of tests

Dhrystone 2 using register variables       19686271.8 lps   (10.0 s, 7 samples)
Double-Precision Whetstone                     3220.7 MWIPS (9.9 s, 7 samples)
Execl Throughput                               1891.0 lps   (30.0 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks        194928.1 KBps  (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks           58641.4 KBps  (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks        509358.2 KBps  (30.0 s, 2 samples)
Pipe Throughput                              198668.9 lps   (10.0 s, 7 samples)
Pipe-based Context Switching                  38667.0 lps   (10.0 s, 7 samples)
Process Creation                               3257.4 lps   (30.0 s, 2 samples)
Shell Scripts (1 concurrent)                   4075.1 lpm   (60.0 s, 2 samples)
Shell Scripts (8 concurrent)                   1128.8 lpm   (60.0 s, 2 samples)
System Call Overhead                         160264.8 lps   (10.0 s, 7 samples)

System Benchmarks Index Values               BASELINE       RESULT    INDEX
Dhrystone 2 using register variables         116700.0   19686271.8   1686.9
Double-Precision Whetstone                       55.0       3220.7    585.6
Execl Throughput                                 43.0       1891.0    439.8
File Copy 1024 bufsize 2000 maxblocks          3960.0     194928.1    492.2
File Copy 256 bufsize 500 maxblocks            1655.0      58641.4    354.3
File Copy 4096 bufsize 8000 maxblocks          5800.0     509358.2    878.2
Pipe Throughput                               12440.0     198668.9    159.7
Pipe-based Context Switching                   4000.0      38667.0     96.7
Process Creation                                126.0       3257.4    258.5
Shell Scripts (1 concurrent)                     42.4       4075.1    961.1
Shell Scripts (8 concurrent)                      6.0       1128.8   1881.3
System Call Overhead                          15000.0     160264.8    106.8
                                                                   ========
System Benchmarks Index Score                                         439.0

------------------------------------------------------------------------
Benchmark Run: Sun May 08 2022 17:24:30 - 17:52:47
4 CPUs in system; running 4 parallel copies of tests

Dhrystone 2 using register variables       77585180.7 lps   (10.0 s, 7 samples)
Double-Precision Whetstone                    12823.4 MWIPS (9.9 s, 7 samples)
Execl Throughput                               5157.5 lps   (30.0 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks        662582.3 KBps  (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks          228934.2 KBps  (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks       1108141.8 KBps  (30.0 s, 2 samples)
Pipe Throughput                              784852.7 lps   (10.0 s, 7 samples)
Pipe-based Context Switching                 122406.8 lps   (10.0 s, 7 samples)
Process Creation                               9142.2 lps   (30.0 s, 2 samples)
Shell Scripts (1 concurrent)                   9084.3 lpm   (60.0 s, 2 samples)
Shell Scripts (8 concurrent)                   1194.7 lpm   (60.1 s, 2 samples)
System Call Overhead                         626201.7 lps   (10.0 s, 7 samples)

System Benchmarks Index Values               BASELINE       RESULT    INDEX
Dhrystone 2 using register variables         116700.0   77585180.7   6648.3
Double-Precision Whetstone                       55.0      12823.4   2331.5
Execl Throughput                                 43.0       5157.5   1199.4
File Copy 1024 bufsize 2000 maxblocks          3960.0     662582.3   1673.2
File Copy 256 bufsize 500 maxblocks            1655.0     228934.2   1383.3
File Copy 4096 bufsize 8000 maxblocks          5800.0    1108141.8   1910.6
Pipe Throughput                               12440.0     784852.7    630.9
Pipe-based Context Switching                   4000.0     122406.8    306.0
Process Creation                                126.0       9142.2    725.6
Shell Scripts (1 concurrent)                     42.4       9084.3   2142.5
Shell Scripts (8 concurrent)                      6.0       1194.7   1991.2
System Call Overhead                          15000.0     626201.7    417.5
                                                                   ========
System Benchmarks Index Score                                        1286.3