Liu Zhou liuzhoou

中国移动在为用户安装宽带时，总会好心地“赠送”一个光猫(调制解调器)。这看似是个不错的促销手段，但通常情况下，这个“赠品”会给用户带来许多麻烦。

赠送的“光猫”安装了许多不必要的功能。光猫的本职工作是进行光电转换，然而中国移动的“光猫”不仅承担着光电转换的任务，还同时进行拨号上网、路由、地址转换(NAT)、端口映射、文件服务器(FTP)等等额外的功能。这些功能让本就廉价而算力低下的光猫运行缓慢，不堪重负。最可气的是，中国移动为了节约维护成本，将光猫的绝大多数设置项锁定，防止用户修改。为了重新“拥有”光猫，我决定夺回对光猫的控制权。

适用范围

中国移动产品
能够开启Telnet服务

我的型号是H2-2。下列操作理论上使用于其他型号。

Redis vs HTTP Benchmarks

See the original blog post

Results:

Name                           ips        average  deviation         median         99th %
redix_pool                   70.44       14.20 ms    ±36.07%       13.30 ms       50.60 ms
run_redix_pipeline 30.56 32.73 ms ±65.74% 47.26 ms 91.99 ms

Mac下配置Aria2

安装和设置 Aria2

# 使用 Homebrew 安装 aria2
brew install aria2

# 创建配置文件aria2.conf和空对话文件aria2.session
mkdir ~/.aria2 && cd ~/.aria2
touch aria2.conf

MySQL 5.7 installation in CentOS 7

sudo su

# Remove MariaDB packages
yum list installed | grep -i maria
yum remove mariadb.x86_64
yum remove mariadb-libs.x86_64

# Download MySQL 5.7 RPM tar

To verify the SHA256 fingerprint of a Signal APK you downloaded from their website, use apksigner on the command line, like so:

/path/to/android-sdk/build-tools/26.0.2/apksigner verify --print-certs \
    /path/to/Signal-website-release-4.12.3.apk | grep SHA-256
> dSigner #1 certificate SHA-256 digest: 29f34e5f27f211b424bc5bf9d67162c0eafba2da35af35c16416fc446276ba26

echo 29:F3:4E:5F:27:F2:11:B4:24:BC:5B:F9:D6:71:62:C0 EA:FB:A2:DA:35:AF:35:C1:64:16:FC:44:62:76:BA:26 \

Comparative Benchmark Numbers @ Rackspace

I've taken the benchmarks from Matthew Rothenberg's phoenix-showdown, updated Phoenix to 0.13.1 and ran the tests on the most powerful machines available at Rackspace.

Results

Framework	Throughput (req/s)	Latency (ms)	Consistency (σ ms)

	## Find Available Target Editions
	DISM.exe /Online /Get-TargetEditions

	## Convert Server Standard 2019 Evaluation to Server Standard 2019
	DISM /online /Set-Edition:ServerStandard /ProductKey:N69G4-B89J2-4G8F4-WWYCC-J464C /AcceptEula

	## How To Activate
	slmgr /ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
	slmgr /skms [server]:[port]
	slmgr /ato

	<?xml version="1.0" encoding="UTF-8" standalone="no"?>
	<d:devices xmlns:d="http://schemas.android.com/sdk/devices/3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
	<d:device>
	<d:name>HUAWEI Mate 20 X</d:name>
	<d:manufacturer>HUAWEI</d:manufacturer>
	<d:meta/>
	<d:hardware>
	<d:screen>
	<d:screen-size>large</d:screen-size>
	<d:diagonal-length>7.20</d:diagonal-length>

	;; A minimum .emacs to test Emacs plugins
	(show-paren-mode 1)
	(eval-when-compile (require 'cl))

	;; test elisps download from internet here
	(setq test-elisp-dir "~/test-elisp/")
	(unless (file-exists-p (expand-file-name test-elisp-dir))
	(make-directory (expand-file-name test-elisp-dir)))

	(setq load-path

	# On slow systems, checking the cached .zcompdump file to see if it must be
	# regenerated adds a noticable delay to zsh startup. This little hack restricts
	# it to once a day. It should be pasted into your own completion file.
	#
	# The globbing is a little complicated here:
	# - '#q' is an explicit glob qualifier that makes globbing work within zsh's [[ ]] construct.
	# - 'N' makes the glob pattern evaluate to nothing when it doesn't match (rather than throw a globbing error)
	# - '.' matches "regular files"
	# - 'mh+24' matches files (or directories or whatever) that are older than 24 hours.
	autoload -Uz compinit