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How unreliable is UDP?

home 16 Oct 2014 - By Karl Seguin I realized something recently: I know virtually nothing about UDP. Oh, I know it's connectionless, has no handshaking and thus doesn't provide any guarantees about delivery or ordering. But, in practice, what does that actually mean? I setup 5 VPS to send each other a few UDP packets over a 7 hour period. I didn't send much traffic (though that's certainly worth trying). Each server, every 9-11 second, randomly picked a target and sent 5-10 packets ranging from 16 to 1016 bytes. 2 servers were in the same data center in New Jersey. 1 each in LA, Amsterdam and Tokyo. The first thing I wanted to know was how unreliable UDP was. Are we talking about a delivery rate of 25%? 50%? 75%? Packets Received - click table to toggle % Receiver NJ 1 NJ 2 LA NLD JPN NJ 1 - 2981/2981 2888/2889 2964/2964 3053/3054 NJ 2 3016/3016 - 3100/310...

Linked on 2015-01-23 19:11:08 | Similar Links
What makes Nim practical? · HookRace - a Nim blog for now

HookRace - a Nim blog for now Posts Feed DDNet Me 2015-01-23 In my last post I showed what makes the Nim programming language special. Today, let's consider Nim from another angle: What makes Nim a practical programming language? Programs written in interpreted languages like Python are difficult to distribute. Either you require Python (in a specific version even) to be installed already, or you ship it with your program. This even causes some to reconsider Python as a teaching language . How does Nim work around this problem? For starters your program gets statically linked against the Nim runtime. That means you end up with a single binary that depends solely on the standard C library, which we can take for granted on any operating system we're interested in. Let's write a small program and give this a try: echo "Hello World" If you want to follow along, get the Nim ...

Linked on 2015-01-23 17:35:05 | Similar Links
Portland Police log (@pdxpolicelog) | Twitter

<![endif] Twitter Search query Search Twitter Remove Verified account @ Suggested users Verified account @ Verified account @ Language: English Bahasa Indonesia Bahasa Melayu Čeština Dansk Deutsch EnglishUK Español Filipino français Italiano Magyar Nederlands Norsk Polski Português română Suomi Svenska Tiếng Việt Türkçe Русский Українська мова עִבְרִית العربية فارسی हिन्दी বাংলা ภาษาไทย 한국어 日本語 简体中文 繁體中文 Have an account? Log in New to Twitter? Join Today » Log in Phone, email or username Password Log in Remember me Forgot password? Already using Twitter via text message? Portland Police log @ pdxpolicelog Tweets 378K Following 10 Followers 812 More ...

Linked on 2015-01-23 05:46:22 | Similar Links
waifu.xyz - a

waifu.xyz Boards: h gif wsg g v b a e sci /a/ - 3127759_curry.webm Download 3127759_curry.webm Information: First found: 1415958532 Aliases: ./webms/a/3127759_curry.webm ...

Linked on 2015-01-22 02:01:03 | Similar Links
UnionFS - Wikipedia, the free encyclopedia

CentralNotice UnionFS From Wikipedia, the free encyclopedia Jump to: navigation , search Unionfs Developer Open Source Community Full name Unification File System Features File system permissions POSIX Transparent compression No Transparent encryption No (provided at the block device level) Other Supported operating systems Linux , FreeBSD and NetBSD Unionfs is a filesystem service for Linux , FreeBSD and NetBSD which implements a union mount for other file systems . It allows files and directories of separate file systems, known as branches, to be transparently overlaid, forming a single coherent file system. Contents of directories which have the same path within the merged branches will be seen together in a single merged directory, within the new, virtual filesystem. When mounting branches, the priority of one branch over the other i...

Linked on 2015-01-21 21:12:37 | Similar Links
The New York City subway, through the eyes of Stanley Kubrick

c. 1946 The New York subway, by Stanley Kubrick Shots by a 17-year-old Kubrick, for 'Look' magazine by Chris Wild Image: Museum of the City of New York "I think aesthetically recording spontaneous action, rather than carefully posing a picture, is the most valid and expressive use of photography," Stanley Kubrick said. Maybe the statement wasn't earth-shaking, but it startled me. The boy who said that had turned 19 a week ago. MILDRED STAGG, "CAMERA", 1948 Image: Museum of the City of New York In 1946, Stanley Kubrick, then aged only 18, took these photographs of the New York Subway and had them published by LOOK magazine.  He photographed for the magazine from 1945 to 1950. According to Helen O'Brian, head of LOOK's photographic department, Kubrick generated the highest number of published articles of any photographer she had worked with. ...

Linked on 2015-01-21 17:23:22 | Similar Links
4chan - News

4chan THE NEXT CHAPTER by moot - 1/21/15 @ 11:00AM EST # I founded 4chan eleven and a half years ago at the age of 15, and after more than a decade of service, I've decided it's time for me to move on. 4chan has faced numerous challenges over the years, including how to continuously satisfy a community of millions , and ensure the site has the human, technical, and financial resources to continue operating. But the biggest hurdle it's had to overcome is myself. As 4chan's sole administrator, decision maker, and keeper of most of its institutional knowledge, I've come to represent an uncomfortably large single point of failure. I've spent the past two years working behind the scenes to address these challenges, and to provide 4chan with the foundation it needs to survive me by bolstering its finances, strengthening its infrastructure, and expanding and empowering its ...

Linked on 2015-01-21 16:35:06 | Similar Links
An abandoned mall in Bangkok has been overtaken by fish | The Verge

<![endif] Trending now 31 New articles Previous 9:27 PM Obama proposes new Precision Medicine Initiative for genetic treatments 6:06 PM Watch a supercut of every user interface from Star Wars: A New Hope 5:33 PM Hands-on with HP's giant Android tablet, the Pro Slate 12 5:28 PM Chrome for iOS gets Material Design, now supports OS X's Handoff 5:21 PM Run The Jewels knows what love is 5:04 PM Justice Department reaches $134,000 settlement for impersonating woman on Facebook 4:52 PM Netflix shares rise on strong earnings bolstered by international growth 4:36 PM SpaceX confirms $1 billion funding round with Google 4:12 PM Netflix to stream The Interview starting January 24th 3:45 PM Weird Al's worldwide Mandatory Fun tour starts May 12th 3:20 PM Björk's new album is now available on...

Linked on 2015-01-21 02:30:44 | Similar Links
remove unwanted object files by CaptainChloride · Pull Request #2 · qpfiffer/lair · GitHub

Skip to content Sign up Sign in This repository Explore Features Enterprise Blog Star 6 Fork 5 qpfiffer / lair /.container /.repohead Code Issues Pull Requests Pulse Graphs HTTPS Subversion You can clone with HTTPS or Subversion . Download ZIP /.repository-sidebar base sha1: &quot;6f70712284923f1d09bdd803aa5238ebbe3fa587&quot; head sha1: &quot;1792c8ba6fffd55feeb497bf87244e205f8ff62f&quot; Loading… New issue remove unwanted object files #2 Open CaptainChloride wants to merge 1 commit into qpfiffer : master from CaptainChloride : patch-1 + 1 − 0   Conversation 1 Commits 1 Files changed 1 Apply labels to this issue bug duplicate enhancement help wanted...

Linked on 2015-01-20 17:18:50 | Similar Links
EmacsWiki: Foot Switches

SiteMap Search ElispArea HowTo Glossary RecentChanges News Problems Suggestions We moved to a new host at the beginning of 2015. Please report any issues you find. Search: Language: Foot Switches Footswitches (pedals), such as those designed by XKeys ( http://www.xkeys.com/xkeys/xkfoot.php ) and sold under various badges, can offload some work from the hands, which may be helpful if you have RepeatedStrainInjury . They are excellent for modifier key s (Ctrl, Alt, Shift) but are also more widely useful than that ( EmacsVersor is designed partly for elegant footswitch use). Update, 2011-05-31: I’ve been struggling to set up the USB version of the XKeys pedals in an all-Linux environment, having previously always used the PS2 version. XKeys provide a Windows-only program for setting the keycodes, and when I asked about getting the information necessary for programming the peda...

Linked on 2015-01-19 19:20:12 | Similar Links
olc_get() · Issue #99 · infoforcefeed/OlegDB · GitHub

Skip to content Sign up Sign in This repository Explore Features Enterprise Blog Star 31 Fork 6 infoforcefeed / OlegDB /.container /.repohead Code Issues Pull Requests Pulse Graphs HTTPS Subversion You can clone with HTTPS or Subversion . Download ZIP /.repository-sidebar Loading… New issue olc_get() #99 Open qpfiffer opened this Issue Jun 16, 2014 · 0 comments Apply labels to this issue enhancement bug duplicate frontend invalid question wontfix Nothing to show Loading… enhancement No milestone qpfiffer Owner qpfiffer commented Jun 16, 2014 Currently there is no clear way to get th...

Linked on 2015-01-19 18:40:05 | Similar Links
AOL Redo · Issue #87 · infoforcefeed/OlegDB · GitHub

Skip to content Sign up Sign in This repository Explore Features Enterprise Blog Star 30 Fork 6 infoforcefeed / OlegDB /.container /.repohead Code Issues Pull Requests Pulse Graphs HTTPS Subversion You can clone with HTTPS or Subversion . Download ZIP /.repository-sidebar Loading… New issue AOL Redo #87 Open qpfiffer opened this Issue Jun 6, 2014 · 1 comment Apply labels to this issue enhancement bug duplicate frontend invalid question wontfix Nothing to show Loading… enhancement No milestone No one assigned Owner qpfiffer commented Jun 6, 2014 The AOL file is how we record meta-info...

Linked on 2015-01-19 00:16:50 | Similar Links
Ori File System

Ori Distributed File System About Getting Ori Source People Publications Contact Ori is a distributed file system built for offline operation and empowers the user with control over synchronization operations and conflict resolution. We provide history through light weight snapshots and allow users to verify the history has not been tampered with. Through the use of replication instances can be resilient and recover damaged data from other nodes. Ori operates peer-to-peer among your devices and uses existing secure communication channels such as SSH to transfer your data. In today's world we often are moving around with intermittent network connectivity and we want to access our data when we board a plane or travel to the office. Ori can verify the authen...

Linked on 2015-01-18 20:51:06 | Similar Links
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Pages are deceptive. Live life in a basket.