cyfdecyf’s gists

cyfdecyf / link-duplicates.rb

Last active March 30, 2018 08:41

Find duplicate files between two directories and use hardlink to keep only one copy.

	#!/usr/bin/env ruby

	# Find duplicate files in specified directories and files and use
	# hardlink to keep only one copy.

	require 'digest'

	if ARGV.length < 1
	name = `basename #{__FILE__}`
	puts "Usage: #{name.chomp} <path1> [path2 ...]"

cyfdecyf / how-to-install-dpdk-on-ubuntu.sh

Last active August 29, 2015 14:06 — forked from ConradIrwin/how-to-install-dpdk-on-ubuntu.sh

	# If you're looking into the C10M problem (10 million concurrent connections)
	# you might want to play with DPDK (Originally proprietry Intel, now open source)
	#
	# C10M: http://c10m.robertgraham.com/
	# DPDK: http://dpdk.org/
	#
	# This is a quick summary how to install dpdk on ubuntu
	# running inside virtualbox on a mac

	# On my Mac:

cyfdecyf / server.go

Last active August 29, 2015 14:04

Too many open file error in net.Listener.Accept loop

	package main

	/*
	Observe different behavior of net.Listener.Accept on Linux and OS X.

	Steps:

	1. Build this program on Linux or OS X.
	2. Execute "ulimit -Sn 5" to limit the number of open file. (You may need to
	change the number to 6 or other values.)

cyfdecyf / extract-link-url.rb

Last active December 31, 2015 12:29

Extract all link from Stanford CS 193P iTunes U feed.

	require 'nokogiri'
	require 'open-uri'

	doc = Nokogiri::XML(open('https://itunesu.itunes.apple.com/WebObjects/LZDirectory.woa/ra/directory/courses/733644550/feed'))

	doc.css('entry').each do \|e\|
	title = e.css('title').first.text
	link = e.css('link').first.attributes["href"].value
	puts title
	puts link

cyfdecyf / extract-cmd.sh

Last active December 29, 2015 03:59

Script to run and collect ROI (region of interest) time for the PARSEC benchmark.

	#!/bin/bash

	# Extract parsec benchmark run command.

	APPS="blackscholes bodytrack canneal swaptions fluidanimate"
	# Number of threads to run.
	NTHR="2 4"
	# Output file
	OUTPUT=cmd
	# Specify input data set.

cyfdecyf / chrome

Last active July 20, 2023 05:56

COW's log for opening taobao.com using Chrome 28, Firefox 22, Safari 6.0.5. Log in grouped file are grouped by different client connection. See comment for how is this log collected.

	[DEBUG] 2013/07/28 12:45:38 cli(127.0.0.1:53365) connected, total 1 clients
	[>>>>>] 2013/07/28 12:45:38 cli(127.0.0.1:53365) request GET www.taobao.com:80/
	[DEBUG] 2013/07/28 12:45:39 cli(127.0.0.1:53365) connected to www.taobao.com:80 1 concurrent connections
	[<<<<<] 2013/07/28 12:45:39 cli(127.0.0.1:53365) response GET www.taobao.com:80/ 200 OK
	[DEBUG] 2013/07/28 12:45:39 cli(127.0.0.1:53365) close idle connections, remains 1
	[DEBUG] 2013/07/28 12:45:39 cli(127.0.0.1:53367) connected, total 2 clients
	[DEBUG] 2013/07/28 12:45:39 cli(127.0.0.1:53368) connected, total 3 clients
	[DEBUG] 2013/07/28 12:45:39 cli(127.0.0.1:53369) connected, total 4 clients
	[>>>>>] 2013/07/28 12:45:39 cli(127.0.0.1:53367) request GET g.tbcdn.cn:80/??tb/global/1.0.5/global-min.css,tb/fp/1.1.4/first-screen-min.css,tb/fp/1.1.4/second-screen-min.css?t=20130711
	[>>>>>] 2013/07/28 12:45:39 cli(127.0.0.1:53368) request GET g.tbcdn.cn:80/??tb/conve/0.0.5/common-min.css,tcc/tbr/1.0.18/tbr/common.css,tcc/tbr/1.0.18/tbr/widget/phone/phone.

cyfdecyf / atomic-assignment-test.go

Last active December 18, 2015 11:59

Test if Go's assignment is atomic

	package main

	import (
	"fmt"
	"runtime"
	)

	func main() {
	var (
	k string // do assignment and read to this variable

cyfdecyf / change-slides-font.vb

Created April 17, 2013 08:59

Change font for all slides in powerpoint.

	Sub textspace()
	Dim slide As slide
	Dim shape As shape
	Dim text As TextRange2

	For Each slide In ActivePresentation.Slides
	For Each shape In slide.Shapes
	If shape.HasTextFrame Then
	Set text = shape.TextFrame2.TextRange
	If Not IsNull(text) Then

cyfdecyf / lockvschan_test.go

Last active July 5, 2023 16:40

Performance test: mutex vs. channel in Go

	// run with go test -test.bench Bench

	package main

	import (
	// "fmt"
	"runtime"
	"sync"
	"sync/atomic"
	"testing"

cyfdecyf / gist:2005310

Created March 9, 2012 06:16 — forked from dx7/gist:1333785

Installing ruby-debug with ruby-1.9.3-p0

	# Install with:
	# bash < <(curl -L https://raw.github.com/gist/2005310)
	#
	# Reference: http://blog.wyeworks.com/2011/11/1/ruby-1-9-3-and-ruby-debug

	echo "Installing ruby-debug with ruby-1.9.3-p0 ..."

	curl -OL http://rubyforge.org/frs/download.php/75414/linecache19-0.5.13.gem
	curl -OL http://rubyforge.org/frs/download.php/75415/ruby-debug-base19-0.11.26.gem

Chen Yufei cyfdecyf