ericliang

#include <iostream>
#include <sys/time.h>
using namespace std;

//http://igoro.com/archive/gallery-of-processor-cache-effects/

int print_interval(timeval t1, timeval t2){
    double elapsed;
    elapsed = (t2.tv_sec - t1.tv_sec) * 1000.0;      // sec to ms
    elapsed += (t2.tv_usec - t1.tv_usec) / 1000.0;   // us to ms

ericliang

#微博开源计划（Weibo Open Source Program）

微博工程师法则（Laws of Engineer in Weibo）：

1. 工程师必须牛逼
2. 除非抵触法则1，否则不能吹牛逼
3. 除非抵触法则1和2，否则开源才牛逼

详情已更新至微博开源计划（Weibo Open Source Program）

ericliang

微博未来特性（Weibo Future Feature）

1. 时间旅行模式 TimeTravelMode

   微博即将为用户提供时间旅行模式，每个用户将可以把自己的微博随意切换到任意时间的状态，包括评论、微博、关系以及好友状态在内的所有信息都会重建。高级用户甚至可以邀请自己的好友一同回到过去，重新开始自己的微博生活。

2. 应用子网支持 AppSubnetSupport

   作为微博助力初创开发者的重要举措之一，为App提供单独子网数据传输通道，子网内数据传输仅限定在本应用内部。一个典型的游戏开发者，可以1）只定义自己的业务逻辑，所有与用户的通讯通过接入微博通道而实现；2）或者仅将SDK绑定在应用后台，通过AB面翻转即可完成微博关系通讯与当前应用的切换。

ericliang

From 81ac1ad630b4d466bdeec58fe367dbf2de595fc2 Mon Sep 17 00:00:00 2001
From: Eric Liang <[email protected]>
Date: Thu, 21 Jun 2012 17:44:20 +0800
Subject: [PATCH] memsql would not satisfy the engine test, so skip the detection and use innodb as default

---
 sysbench/drivers/mysql/drv_mysql.c |   29 ++++++++++++++++++-----------
 1 files changed, 18 insertions(+), 11 deletions(-)

diff --git a/sysbench/drivers/mysql/drv_mysql.c b/sysbench/drivers/mysql/drv_mysql.c

ericliang

#!/bin/bash

ifconfig wlan0 down

# set up a tap interface for qemu
# USERID - uid qemu is being run under.
USERID=`whoami`
iface=`tunctl -b -u $USERID`

# generate a random mac address for the qemu nic

ericliang

# HG changeset patch
# User Eric Liang <[email protected]>
# Date 1316438901 -28800
# Node ID 117c5987b5b2f7d49646f86939c040ff11b70e04
# Parent  95ac2f7ddad0b8350d5ea3aed7d7d028c44396ba
fix improper codec dictionary in MS1252 according to the bestfit version:
http://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WindowsBestFit/bestfit1252.txt

diff -r 95ac2f7ddad0 -r 117c5987b5b2 src/share/classes/sun/nio/cs/MS1252.java
--- a/src/share/classes/sun/nio/cs/MS1252.java  Wed Aug 24 15:11:00 2011 +0100

ericliang

<?xml version="1.0" encoding="UTF-8"?>

<project name="communicate" default="all" basedir=".." xmlns:artifact="antlib:org.apache.maven.artifact.ant">
	<property name="src.dir" value="${basedir}/src"/>
	<property name="compile.dir" value="${basedir}/work"/>
	<property name="lib.dir" value="${basedir}/lib"/>
	<property name="conf.dir" value="${basedir}/conf"/>
	<property file="${conf.dir}/build.properties"/>

	<typedef resource="org/apache/maven/artifact/ant/antlib.xml"

ericliang

<config>
  <TCP
         loopback="true"
         recv_buf_size="30000000"
         send_buf_size="6400000"
         discard_incompatible_packets="true"
         max_bundle_size="64000"
         max_bundle_timeout="30"             
         enable_bundling="true"
         use_send_queues="false"

ericliang

#!/usr/bin/env escript
%% -*- erlang -*-
%%! -smp enable -sname subset_sum_problem

%%
%% Illustrate the dynamic programming in subset_sum_problem:
%% http://en.wikipedia.org/wiki/Subset_sum_problem#Exponential_time_algorithm
%%

main(_) ->

ericliang

#!/usr/bin/env escript
%% -*- erlang -*-
%%! -smp enable -sname subset_sum_problem

%%
%% Illustrate the dynamic programming in subset_sum_problem:
%% http://en.wikipedia.org/wiki/Subset_sum_problem#Pseudo-polynomial_time_dynamic_programming_solution 
%%

main(_) ->