Cellular Traffic Offloading

Reference: [1] Mobile Data Offload for 3G Networks [2] Mobile Data Offloading through Opportunistic Communications and Social Participation [3] Femtocell Networks: A Survey There are two types of existing solutions to alleviate the traffic load on ce…

FD.io社区中国行暨未来网络技术沙龙·南京站会议小结

What is FD.io VPP? FD.io VPP(Fast Data Input/Output Vector Packet Processing)is a new network multi-tool. Feature:Fast, Scalable and Determinisic,Extensible and Flexible modular design,Developer friendly. New Directions:Asymmectrical Pipelines. Conta…

A Nice Paper About Mobile Data Offloading

关于Mobile Data Offloading这个研究领域的Paper基本上该有的都看过了,我想即使再有也无非是那些套路,新不到哪去.同样,这篇paper也是这样,它的出发点是改进原有的利用ad hoc网络来进行offloading中耗能和延迟高的缺陷.但是这篇paper的改进方式,读后让我感觉眼前一亮,在某种程度上来说,扩宽了我的思维.特意记录下来. 在原有的offloading的方式,按是否有辅助基础设施的参与可以分为两类:一类是通过AP辅助offloading,另一类是纯粹的ad hoc…

Method of offloading iSCSI TCP/IP processing from a host processing unit, and related iSCSI TCP/IP offload engine

A method of offloading, from a host data processing unit (205), iSCSI TCP/IP processing of data streams coming through at least one TCP/IP connection (3071 ,307 2 ,307 3), and a related iSCSI TCP/IP Offload Engine (TOE). The method including: providi…

Linux下按程序查实时流量 network traffic

实然看到下载速度多达几M/s,但实际上并没有什么占用带宽的进程. 相查看每个程序占用的网络流量, 但系统自带的 System Monitor 只能查看全局的流量, 不能具体看某个程序的...... key words: network traffic, process specific, nethogs 工具: nethogs (要用sudo运行) Description : NetHogs is a small "net top" tool. /* 像top 一样的工具, 实时更新…

Windows Azure Traffic Manager (5) Traffic Manager Overview

<Windows Azure Platform 系列文章目录> 笔者默默地看了一下之前写的Traffic Manager内容,已经差不多是3年前的文章了.现在Azure Traffic Manager有了新的功能,正好周末的时候也在研究相关的内容,这次做笔记总结一下. 首先第一点,笔者不太认同Azure官方网站写的Traffic Manager是负载平衡: Traffic Manager最多算是智能DNS解析(Smart DNS).用户的请求,按照一定的规则(性能.循环法.故障转移)路由到合适…

Windows Azure Traffic Manager (6) 使用Traffic Manager，实现本地应用+云端应用的高可用

<Windows Azure Platform 系列文章目录> 注意:本文介绍的是使用国内由世纪互联运维的Azure China服务. 以前的Traffic Manager,背后的Service Endpoint必须是Azure数据中心的Cloud Service. 现在最新的Traffic Manager,Endpoint不仅仅支持Azure数据中心的Cloud Service和Web Site.同时还支持部署在自建数据中心(第三方托管)的应用程序. 这种增强功能对客户的收益在于,平时客户可…

理解 Linux 网络栈（3）：QEMU/KVM + VxLAN 环境下的 Segmentation Offloading 技术（发送端）

本系列文章总结 Linux 网络栈,包括: (1)Linux 网络协议栈总结 (2)非虚拟化Linux环境中的网络分段卸载技术 GSO/TSO/UFO/LRO/GRO (3)QEMU/KVM + VxLAN 环境下的 Segmentation Offloading 技术(发送端) (4)QEMU/KVM + VxLAN 环境下的 Segmentation Offloading 技术(接收端) 1. 测试环境 1.1 总体环境宿主机:Ubuntu Linux/KVM + VxLAN + Linu…

理解 Linux 网络栈（2）：非虚拟化Linux 环境中的 Segmentation Offloading 技术

本系列文章总结 Linux 网络栈,包括: (1)Linux 网络协议栈总结 (2)非虚拟化Linux环境中的网络分段卸载技术 GSO/TSO/UFO/LRO/GRO (3)QEMU/KVM + VxLAN 环境下的 Segmentation Offloading 技术(发送端) (4)QEMU/KVM + VxLAN 环境下的 Segmentation Offloading 技术(接收端) 第一篇文章总结了Linux 网络协议栈的概括和功能.本文总结非虚拟化环境中的各种 Segmentatio…

流量工程 traffic engineering (TE)

什么是流量工程流量工程是指根据各种数据业务流量的特性选取传输路径的处理过程.流量工程用于平衡网络中的不同交换机.路由器以及链路之间的负载. [编辑] 流量工程的内容流量工程在复杂的网络环境中,控制不同的业务流走不同的路径,关键的业务走可靠的路径并保证服务质量,并且在某段网络拥塞的情况下,动态调整路由,整个网络如同一个"可控的城市交通系统". 流量工程理念在上世纪90年代末提出,最初起源于互联网.其原理是在MPLS环境中,充分利用标签交换系统来为不同的业务流着色,通过LDP来传递LS…

snmp switch traffic交换机带宽

上代码 <?php function getstr1($strall,$str1,$str2,$html_charset='utf-8'){ $i1=mb_strpos($strall,$str1,0,$html_charset); if(!is_int($i1)){return '';} $i1R=$i1+mb_strlen($str1,$html_charset); $i2=mb_strpos($strall,$str2,$i1+mb_strlen($str1,$html_charset),…

每日英语：The Secret About Online Ad Traffic: One-Third Is Bogus

Billions of dollars are flowing into online advertising. But marketers also are confronting an uncomfortable reality: rampant fraud. rampant:猖獗的,狂暴的 About 36% of all Web traffic is considered fake, the product of computers hijacked by viruses and pro…

Traffic Lights

Traffic Lights time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output A car moves from point A to point B at speed v meters per second. The action takes place on the X-axis. At the distance d met…

【POJ】3150 Cellular Automaton（矩阵乘法+特殊的技巧）

http://poj.org/problem?id=3150 这题裸的矩阵很容易看出,假设d=1,n=5那么矩阵是这样的 1 1 0 0 1 1 1 1 0 0 0 1 1 1 0 0 0 1 1 1 1 0 0 1 1 这是n^3的,可是n<=500,显然tle 我们观察这个n×n的矩阵,发现没一行都是由上一行向右移得到的. 而根据Cij=Aik×Bkj,我们可以发现,其实Bkj==Akj==Ai(j-k) 那么就可以降二维变一维,每一次只要算第一行即可,即Cj=Ak*Bj-k #includ…

Educational Codeforces Round 15 C. Cellular Network（二分）

C. Cellular Network time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output You are given n points on the straight line — the positions (x-coordinates) of the cities and m points on the same line…

ease of rerouting traffic in IP networks without readdressing every host

https://en.wikipedia.org/wiki/Network_address_translation In the face of the foreseeable global IP address space exhaustion, NAT was increasingly used since the late 1990s in conjunction with IP masquerading, which is a technique that hides an entire…

HDU 3686 Traffic Real Time Query System（双连通分量缩点+LCA）（2010 Asia Hangzhou Regional Contest）

Problem Description City C is really a nightmare of all drivers for its traffic jams. To solve the traffic problem, the mayor plans to build a RTQS (Real Time Query System) to monitor all traffic situations. City C is made up of N crossings and M roa…

UVA 1456 六 Cellular Network

Cellular Network Time Limit:3000MS Memory Limit:0KB 64bit IO Format:%lld & %llu Submit Status Practice UVA 1456 A cellular network is a radio network made up of a number of cells each served by a base station located in the cell. The base sta…

Examining Open vSwitch Traffic Patterns

In this post, I want to provide some additional insight on how the use of Open vSwitch (OVS) affects—or doesn’t affect, in some cases—how a Linux host directs traffic through physical interfaces, OVS internal interfaces, and OVS bridges. This is some…

Educational Codeforces Round 15 Cellular Network

Cellular Network 题意: 给n个城市,m个加油站,要让m个加油站都覆盖n个城市,求最小的加油范围r是多少. 题解: 枚举每个城市,二分查找最近的加油站,每次更新答案即可,注意二分的时候不要越界oil数组,上下界都不要越.还有,int坑死人,以后绝对全用long long!!! 代码: #include <bits/stdc++.h> using namespace std; typedef long long ll; const int INF=0x3f3f3f3f; cons…

【BZOJ】【1018】【SHOI2008】堵塞的交通traffic

线段树这题的线段树+分类讨论蛮神奇的……我以前学的线段树简直就是渣渣QAQ 看了下ydc题解里的思想>_>用线段树维护连通性!那么就自己写吧……每个节点表示一段区间的连通性(我的叶子节点表示的是一个方块型的四个点之间的连通性,所以我直接n--了)对线段树上每个节点维护6个信息,即四个端点中任意一对点之间的连通性. 维护连通性的时候要进行信息的整合,也就是说间接连通的要全部找到并标记上连通,举个例子:如果左边连通且下边两端点连通,则左上到右下连通.这是一个简单的讨论我就不细说了,自己想一下真的…

Monitor traffic to localhost from IE or .NET

原文:http://docs.telerik.com/fiddler/Configure-Fiddler/Tasks/MonitorLocalTraffic Monitor traffic to localhost from IE or .NET To monitor traffic sent to http://localhost or http://127.0.0.1 from IE8 or below or the .NET Framework: Use your machine name…

Codeforces Educational Codeforces Round 15 C. Cellular Network

LightOJ 1074 Extended Traffic （最短路spfa+标记负环点）

Extended Traffic 题目链接: http://acm.hust.edu.cn/vjudge/contest/122685#problem/O Description Dhaka city is getting crowded and noisy day by day. Certain roads always remain blocked in congestion. In order to convince people avoid shortest routes, and he…

Gym 100507I Traffic Jam in Flower Town （模拟）

Traffic Jam in Flower Town 题目链接: http://acm.hust.edu.cn/vjudge/contest/126546#problem/I Description Having returned from Sun City, Dunno told all his friends that every shorty may have a personal automobile. Immediately after that so many citizens to…