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	without PgBouncer			with PgBouncer
	including	excluding	overhead	including	excluding	overhead
50	279.45	470.49	40.60%	651.29	752.88	13.49%
100	300.56	519.99	42.20%	688.09	794.18	13.36%
200	fail	fail		728.26	826.52	11.89%
300	fail	fail		808.12	923.31	12.48%
400	fail	fail		797.75	898.38	11.20%
500	fail	fail		744.53	824.08	9.65%
600	fail	fail		808.09	884.52	8.64%

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Advantages

1. 相容原有的 source list
2. 只下載需要安裝的套件
3. 步驟單純

Goals

基本上就是處理下面三種(apt update, upgrade, install)需要網路的操作

• online$: 表示在有對外網路的主機操作
• offline$: 表示在無對外網路的主機操作

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Online host

• Try to install 'pyvmomi' module

$ mkdir pyvmomi
$ cd pyvmomi
$ pip download pyvmomi

• Now the related modules of 'pyvmomi' are downloaded in the folder.

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	1	2	3	4	5	6	7	8	9	10
Alpine	1017.10	1078.33	1006.94	1013.67	987.46	999.53	988.34	1024.07	989.77	930.69
Debian Stretch	935.02	986.09	935.33	961.89	934.99	970.06	977.44	968.70	902.98	893.98

	平均	標準差	誤差	比值
Alpine	1003.59	36.99	3.69%	106.01
Debian Stretch	946.65	31.36	3.31%	100.00

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	1	2	3	4	5	平均	標準差	誤差	比值
A	951.99	979.08	992.40	1067.75	1014.78	1001.20	43.59	4.35%	100
B	888.62	944.81	901.56	944.71	920.34	920.01	25.25	2.74%	91.89

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#!/bin/bash
# Please check out the details of official page: https://docs.docker.com/engine/installation/linux/docker-ce/ubuntu/
# Tested on Ubuntu Zesty 17.04 amd64

# This script need to sudo.
sudo -S sudo -v

# Uninstall old versions
sudo apt-get remove docker docker-engine docker.io

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# 執行時自行註解掉不需要的段落

# 自動型別
var = 'Hello World'  # string
print(var)
var = 100            # int
print(var+10)
print('-----')

# 沒有 overflow