树莓派官方的Raspbian为了保持向下兼容仍然是32位，64位的树莓派3不跑64位系统和咸鱼有什么区别？

下载镜像

Ubuntu官方已经提供了树莓派3的镜像，直接下载即可。

刷TF卡

如果打算玩docker建议至少32G以上，16G需要在调试的间隙清理掉无用的若干<none>容器和镜像以免空间不足。刷TF卡用Etcher即可。
默认用户名和密码均为ubuntu。

改源

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sudo vi /etc/apt/sources.list

旧的源是http://ports.ubuntu.com，批量改成科大源并注释掉deb-src。

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:%s/http:\/\/ports.ubuntu.com/https:\/\/mirrors.ustc.edu.cn/g
:%s/deb-src/#deb-src/g

设置wifi

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sudo apt install network-manager
sudo service network-manager start
sudo nmtui

debug

Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?

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sudo rm /var/lib/dpkg/lock*
sudo dpkg --configure -a
sudo apt update

dpkg: error: parsing file ‘/var/lib/dpkg/updates/0004’ near line 0

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cd /var/lib/dpkg/updates && sudo rm -rf 0004
sudo dpkg --configure -a

简单测试

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sudo apt install sysbench
sysbench --test=cpu --cpu-max-prime=20000 run

树莓派3B（BCM2837）测试结果：

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sysbench 1.0.11 (using system LuaJIT 2.1.0-beta3)

Running the test with following options:
Number of threads: 1
Initializing random number generator from current time


Prime numbers limit: 20000

Initializing worker threads...

Threads started!

CPU speed:
    events per second:   220.37

General statistics:
    total time:                          10.0007s
    total number of events:              2206

Latency (ms):
         min:                                  4.21
         avg:                                  4.53
         max:                                  8.78
         95th percentile:                      8.58
         sum:                               9996.78

Threads fairness:
    events (avg/stddev):           2206.0000/0.00
    execution time (avg/stddev):   9.9968/0.00

i5-8400用qemu模拟aarch64架构在ubuntu 16.04下测试结果：

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sysbench 0.4.12:  multi-threaded system evaluation benchmark

Running the test with following options:
Number of threads: 1

Doing CPU performance benchmark

Threads started!
Done.

Maximum prime number checked in CPU test: 20000


Test execution summary:
    total time:                          45.2990s
    total number of events:              10000
    total time taken by event execution: 45.2838
    per-request statistics:
         min:                                  4.42ms
         avg:                                  4.53ms
         max:                                  5.26ms
         approx.  95 percentile:               4.62ms

Threads fairness:
    events (avg/stddev):           10000.0000/0.00
    execution time (avg/stddev):   45.2838/0.00

i5-8400在ubuntu 18.04下测试结果：

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sysbench 1.0.11 (using system LuaJIT 2.1.0-beta3)

Running the test with following options:
Number of threads: 1
Initializing random number generator from current time


Prime numbers limit: 20000

Initializing worker threads...

Threads started!

CPU speed:
    events per second:   549.44

General statistics:
    total time:                          10.0018s
    total number of events:              5496

Latency (ms):
         min:                                  1.81
         avg:                                  1.82
         max:                                  5.85
         95th percentile:                      1.86
         sum:                              10000.89

Threads fairness:
    events (avg/stddev):           5496.0000/0.00
    execution time (avg/stddev):   10.0009/0.00