CHE Yulin CheYulin

## latency.txt
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

## .gitignore
build

## gist:17152bb652cc3cf0057907d262c81976
----

Linux 基于策略的路由(Linux Policy Routing)

Linux 有传统的基于数据包目的地址的路由算法，和新的基于策略的路由算法
新算法优点：支持多个路由表，支持按数据报属性（源地址、目的地址、协议、端口、数据包大小、内容等）选择不同路由表


# 查看规则命令，后面可跟其它参数，默认为 show(list) 显示全部
ip rule

## gist:8b55c5fce03d48330714619fe30de431
//
// Created by yche on 9/2/18.
//

#include <chrono>
#include <cassert>
#include <algorithm>

#include "../utils/log.h"

## tmux_local_install.sh
#!/bin/bash

# Script for installing tmux on systems where you don't have root access.
# tmux will be installed in $HOME/local/bin.
# It's assumed that wget and a C/C++ compiler are installed.

# exit on error
set -e

TMUX_VERSION=1.8

## Scan.py
# -*- coding: utf-8 -*-

"""
SCAN: A Structural Clustering Algorithm for Networks
As described in http://ualr.edu/nxyuruk/publications/kdd07.pdf
"""

from collections import deque
import numpy as np
from scipy.sparse import csr_matrix

## iterm2-solarized.md

      
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                CheYulin
                / iterm2-solarized.md
            
            
              Created
              April 2, 2017 02:33
                — forked from kevin-smets/iterm2-solarized.md
            
              
                iTerm2 + Oh My Zsh + Solarized color scheme + Meslo powerline font + [Powerlevel9k] - (macOS)
              
          
    Default


Powerlevel9k


## moveClear.js

(function(){
	//处理对象&初始变量
	var float_obj = document.getElementById('float_footer'),
		float_cur = document.getElementById('float_footer_cur'),
		float_cur_startClass = float_cur.className,
		eventOff,eventMaxWidth = 195,startX,clientX;
	//按下鼠标&触点
	function clearStart(event){
		if(/ui-slider-handle/.test(event.target.className)){

## just play
cheyulin

## mmap.c
#include <stdio.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>

#define CHECK(thing) if (!(thing)) { perror(#thing); exit(1); }
#define MAX_PAGE_IN 104857600
	Latency Comparison Numbers (~2012)
	----------------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD
	----

	Linux 基于策略的路由(Linux Policy Routing)

	Linux 有传统的基于数据包目的地址的路由算法，和新的基于策略的路由算法
	新算法优点：支持多个路由表，支持按数据报属性（源地址、目的地址、协议、端口、数据包大小、内容等）选择不同路由表


	# 查看规则命令，后面可跟其它参数，默认为 show(list) 显示全部
	ip rule
	//
	// Created by yche on 9/2/18.
	//

	#include <chrono>
	#include <cassert>
	#include <algorithm>

	#include "../utils/log.h"
	#!/bin/bash

	# Script for installing tmux on systems where you don't have root access.
	# tmux will be installed in $HOME/local/bin.
	# It's assumed that wget and a C/C++ compiler are installed.

	# exit on error
	set -e

	TMUX_VERSION=1.8
	# -- coding: utf-8 --

	"""
	SCAN: A Structural Clustering Algorithm for Networks
	As described in http://ualr.edu/nxyuruk/publications/kdd07.pdf
	"""

	from collections import deque
	import numpy as np
	from scipy.sparse import csr_matrix

	(function(){
	//处理对象&初始变量
	var float_obj = document.getElementById('float_footer'),
	float_cur = document.getElementById('float_footer_cur'),
	float_cur_startClass = float_cur.className,
	eventOff,eventMaxWidth = 195,startX,clientX;
	//按下鼠标&触点
	function clearStart(event){
	if(/ui-slider-handle/.test(event.target.className)){
	#include <stdio.h>
	#include <sys/stat.h>
	#include <sys/types.h>
	#include <sys/mman.h>
	#include <unistd.h>
	#include <fcntl.h>
	#include <stdlib.h>

	#define CHECK(thing) if (!(thing)) { perror(#thing); exit(1); }
	#define MAX_PAGE_IN 104857600