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Brendan Gregg's Blog

This Site: Homepage Blog Full Site Map Sys Perf book Linux Perf Perf Methods USE Method TSA Method Off-CPU Analysis Active Bench. Flame Graphs Heat Maps Frequency Trails Colony Graphs perf Examples ktap Examples DTrace Tools DTraceToolkit DtkshDemos Guessing Game Specials Books Other Sites Recent posts: 09 Aug 2016 » gdb Debugging Full Example (Tutorial): ncurses 23 Jul 2016 » Deirdré 13 Jul 2016 » llnode for Node.js Memory Leak Analysis 14 Jun 2016 » Ubuntu Xenial bcc/BPF 08 Jun 2016 » Hist Triggers in Linux 4.7 04 May 2016 » SREcon: Performance Checklists for SREs 2016 30 Apr 2016 » Linux 4.5 perf folded format 30 Mar 2016 » Working at Netflix 2016 28 Mar 2016 » Linux BPF/bcc Road Ahead, March 2016 05 Mar 2016 » Linux BPF Superpowers 08 Feb 2016 » Linux eBPF/bcc uprobes 05 Feb 2016 » Who is waking the waker? (Linux chain graph prototype) 01 Fe...

Linked on 2016-09-14 02:14:59 | Similar Links
disconnectivity comments on TIL that hard disks are so sensitive to vibration, that just screaming at them diminishes their performance

jump to content my subreddits announcements Art AskReddit askscience aww blog books creepy dataisbeautiful DIY Documentaries EarthPorn explainlikeimfive food funny Futurology gadgets gaming GetMotivated gifs history IAmA InternetIsBeautiful Jokes LifeProTips listentothis mildlyinteresting movies Music news nosleep nottheonion OldSchoolCool personalfinance philosophy photoshopbattles pics science Showerthoughts space sports television tifu todayilearned TwoXChromosomes UpliftingNews videos worldnews WritingPrompts edit subscriptions front - all - random | AskReddit - funny - videos - worldnews - pics - todayilearned - gifs - aww - news - gaming - movies - Showerthoughts - mildlyinteresting - Jokes - television - tifu - dataisbeautiful - science - nottheonion - LifeProTips - OldSchoolCool - explainlikeimfive - sports - IAmA - Music - personalfinance - photoshopbattles - TwoXChromosomes - ...

Linked on 2016-09-14 02:11:05 | Similar Links
Savage Resurrection on Steam

Login Store Featured Explore Curators Wishlist News Stats Community Home Discussions Workshop Greenlight Market Broadcasts Support Change language View desktop website © Valve Corporation. All rights reserved. All trademarks are property of their respective owners in the US and other countries. Privacy Policy | Legal | Steam Subscriber Agreement | Refunds [if lt IE 7]> <style type="text/css"> #logo_holder img { filter:progid:DXImageTransform.Microsoft.Alpha(opacity=0); } #logo_holder { display: inline-block; width: 176px; height: 44px; filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='http://store.akamai.steamstatic.com/public/images/v5/globalheader_logo.png'); } </style> <![endif] STORE Featured Explore Curators Wishlist News Stats COMMUNITY Home Discussions Works...

Linked on 2016-09-14 01:03:01 | Similar Links
OpenBazaar

<div class="gradient"></div> OpenBazaar Download It's open source. View the code. How does OpenBazaar work? It's a peer-to-peer marketplace... How are there no fees/restrictions? OpenBazaar isn't a company... Is Bitcoin the only supported payment method? Yes, currently... How do I create a store and sell items? Download the OpenBaz... Blog Documentation Tutorial Donations <div class="bottom-notice js-bottom-notice">OpenBazaar is running in Testnet mode. It's <u>not recommended</u> to be used on real transactions yet</div> ...

Linked on 2016-09-13 22:05:18 | Similar Links
Oh, shit, git!

Git is hard: screwing up is easy, and figuring out how to fix your mistakes is fucking impossible. Git documentation has this chicken and egg problem where you can't search for how to get yourself out of a mess, unless you already know the name of the thing you need to know about in order to fix your problem. So here are some bad situations I've gotten myself into, and how I eventually got myself out of them in plain english *. Oh shit, I did something terribly wrong, please tell me git has a magic time machine!?! git reflog # you will see a list of every thing you've done in git, across all branches! # each one has an index HEAD@{index} # find the one before you broke everything git reset HEAD@{index} # magic time machine You can use this to get back stuff you accidentally deleted, or just to remove some stuff you t...

Linked on 2016-09-13 11:18:04 | Similar Links
Zachtronics | SHENZHEN I/O

Games Support Contact SHENZHEN I/O: BUILD CIRCUITS. WRITE CODE. RTFM. Coming to Steam Early Access on October 6th, 2016! DISCUSS ON REDDIT Build circuits using a variety of components from different manufacturers, like microcontrollers, memory, logic gates, and LCD screens. Write code in a compact and powerful assembly language where every instruction can be conditionally executed. Read the manual, which includes over 30 pages of original datasheets, reference guides, and technical diagrams (included as a PDF, with a physical version available for purchase separately). Get to know the colorful cast of characters at your new employer, 深圳龙腾科技有限公司 (Shenzhen Longteng Electronics Co., Ltd.), located in the electronics capital of the world. Get creative! Design and test your own games and devices in the sandbox. Engineering is hard! Take a break ...

Linked on 2016-09-12 23:50:19 | Similar Links
Ted Wheeler Googling (@WheelerGoogling) | Twitter

<< in other portland lolz

Home Moments Search query Search Twitter Remove Verified account @ Suggested users Verified account @ Verified account @ Language: English Bahasa Indonesia Bahasa Melayu Català Čeština Dansk Deutsch English UK Español Filipino Français Hrvatski Italiano Magyar Nederlands Norsk Polski Português Română Slovenčina Suomi Svenska Tiếng Việt Türkçe Ελληνικά Български език Русский Српски Українська мова עִבְרִית العربية فارسی मराठी हिन्दी বাংলা ગુજરાતી தமிழ் ಕನ್ನಡ ภาษาไทย 한국어 日本語 简体中文 繁體中文 Have an account? Log in Have an account? Remember me · Forgot password? New to Twitter? Sign up Ted Wheeler Googling @ WheelerGoogling Tweets 213 Following 86 Followers 421 Mo...

Linked on 2016-09-12 23:08:39 | Similar Links
Adrienne Mayor on Twitter: "World #Nomad Games #Kyrgyzstan #ModernAmazons #Amazons #Archers https://t.co/ELaM6cGucN"

Home Moments Search query Search Twitter Remove Verified account @ Suggested users Verified account @ Verified account @ Language: English Bahasa Indonesia Bahasa Melayu Català Čeština Dansk Deutsch English UK Español Filipino Français Hrvatski Italiano Magyar Nederlands Norsk Polski Português Română Slovenčina Suomi Svenska Tiếng Việt Türkçe Ελληνικά Български език Русский Српски Українська мова עִבְרִית العربية فارسی मराठी हिन्दी বাংলা ગુજરાતી தமிழ் ಕನ್ನಡ ภาษาไทย 한국어 日本語 简体中文 繁體中文 Have an account? Log in Have an account? Remember me · Forgot password? New to Twitter? Sign up amayor's profile Adrienne Mayor @ amayor Adrienne Mayor @ amayor Historian of...

Linked on 2016-09-12 21:09:16 | Similar Links
wisdom_exe on Twitter: "to play a tambourine purchase or obtain a copy of windows"

Home Moments Search query Search Twitter Remove Verified account @ Suggested users Verified account @ Verified account @ Language: English Bahasa Indonesia Bahasa Melayu Català Čeština Dansk Deutsch English UK Español Filipino Français Hrvatski Italiano Magyar Nederlands Norsk Polski Português Română Slovenčina Suomi Svenska Tiếng Việt Türkçe Ελληνικά Български език Русский Српски Українська мова עִבְרִית العربية فارسی मराठी हिन्दी বাংলা ગુજરાતી தமிழ் ಕನ್ನಡ ภาษาไทย 한국어 日本語 简体中文 繁體中文 Have an account? Log in Have an account? Remember me · Forgot password? New to Twitter? Sign up wisdom_exe's profile wisdom_exe @ wisdom_exe wisdom_exe @ wisdom_exe hi i kno...

Linked on 2016-09-12 21:08:38 | Similar Links
Boundary (topology) - Wikipedia, the free encyclopedia

CentralNotice From Wikipedia, the free encyclopedia Jump to: navigation , search This article is about boundaries in general topology . For the boundary of a manifold , see boundary of a manifold . This article includes a list of references , but its sources remain unclear because it has insufficient inline citations . Please help to improve this article by introducing more precise citations. (March 2013) ( Learn how and when to remove this template message ) A set (in light blue) and its boundary (in dark blue). In topology and mathematics in general, the boundary of a subset S of a topological space X is the set of points which can be approached both from S and from the outside of S . More precisely, it is the set of points in the closure of S , not belonging to the interior of S . An element of the boundary of S is called a boundary point of S . The ...

Linked on 2016-09-12 21:04:00 | Similar Links
ST_ExteriorRing

ST_ExteriorRing Prev 8.5. Geometry Accessors Next ST_ExteriorRing — Returns a line string representing the exterior ring of the POLYGON geometry. Return NULL if the geometry is not a polygon. Will not work with MULTIPOLYGON geometry ST_ExteriorRing ( geometry a_polygon ) ; Returns a line string representing the exterior ring of the POLYGON geometry. Return NULL if the geometry is not a polygon. Only works with POLYGON geometry types This method implements the OpenGIS Simple Features Implementation Specification for SQL 1.1. 2.1.5.1 This method implements the SQL/MM specification. SQL-MM 3: 8.2.3, 8.3.3 This function supports 3d and will not drop the z-index. --If you have a table of polygons SELECT gid, ST_ExteriorRing(the_geom) AS ering FROM sometable; --If you have a table of MULTIPOLYGONs --and want to return a MULTILINESTRING composed of the exterior rings of each polyg...

Linked on 2016-09-12 20:23:10 | Similar Links
ST_Boundary

ST_Boundary Prev 8.5. Geometry Accessors Next ST_Boundary — Returns the closure of the combinatorial boundary of this Geometry. geometry ST_Boundary ( geometry geomA ) ; Returns the closure of the combinatorial boundary of this Geometry. The combinatorial boundary is defined as described in section 3.12.3.2 of the OGC SPEC. Because the result of this function is a closure, and hence topologically closed, the resulting boundary can be represented using representational geometry primitives as discussed in the OGC SPEC, section 3.12.2. Performed by the GEOS module Prior to 2.0.0, this function throws an exception if used with GEOMETRYCOLLECTION . From 2.0.0 up it will return NULL instead (unsupported input). This method implements the OpenGIS Simple Features Implementation Specification for SQL 1.1. OGC SPEC s2.1.1.1 This method implements the SQL/MM specification. ...

Linked on 2016-09-12 20:18:58 | Similar Links
wisdom_exe on Twitter: "to be a true slytherin you must find a quiet, private spot for meditation"

Home Moments Search query Search Twitter Remove Verified account @ Suggested users Verified account @ Verified account @ Language: English Bahasa Indonesia Bahasa Melayu Català Čeština Dansk Deutsch English UK Español Filipino Français Hrvatski Italiano Magyar Nederlands Norsk Polski Português Română Slovenčina Suomi Svenska Tiếng Việt Türkçe Ελληνικά Български език Русский Српски Українська мова עִבְרִית العربية فارسی मराठी हिन्दी বাংলা ગુજરાતી தமிழ் ಕನ್ನಡ ภาษาไทย 한국어 日本語 简体中文 繁體中文 Have an account? Log in Have an account? Remember me · Forgot password? New to Twitter? Sign up wisdom_exe's profile wisdom_exe @ wisdom_exe wisdom_exe @ wisdom_exe hi i kno...

Linked on 2016-09-12 17:19:15 | Similar Links
1 million residents of Beijing are living underground as part of the 'Rat Tribe'

<![endif] Lost At E Minor 502.4 K Facebook 26.9 K Twitter Contribute Search 1 million residents of Beijing are living underground as part of the ‘Rat Tribe’ Search Search Hide search Home Page Contribute now! Trending Art Design Photography Travel Music Tech News Exhale eminor.tv About Us Advertise Contact Jobs Longform Articles Facebook Twitter Instagram Pinterest Email Close Trending Art Design Photography Travel Music Tech News Exhale eminor.tv /header.php ############ TEMPLATE SINGLE.PHP ################ Travel By Rachel Oakley 30 Jan 15 Facebook 495 Twitter Beijing might be known for its high rise buildings and millions of residents but below this enormous city you’ll find an underground world that’s home to around 1 million residents. ...

Linked on 2016-09-12 04:30:47 | Similar Links
China Will Resurrect The World's Largest Plane | Popular Science

Skip to main content <div class="pane-content"> </div> <div class="pane-content"> </div> <div class="pane-content"> Subscribe </div> <div class="pane-content"> TRENDING NEW ISSUE BRILLIANT 10 OSIRIS-REX DRONES DRIVERLESS CARS ZIKA TOPICS ANIMALS AVIATION CARS DIY ENERGY ENTERTAINMENT ENVIRONMENT GADGETS HEALTH MILITARY SCIENCE SPACE TECHNOLOGY VIDEOS BLOGS THE BIODESIGN CHALLENGE BOXPLOT DO TRY THIS AT HOME EASTERN ARSENAL EEK SQUAD KINDERLAB OUR MODERN PLAGUES SPEED LAB SURE HOUSE UNDER THE MICROSCOPE VINTAGE SPACE ZERO MOMENT SHOP FEATURES Archives </div> <div class="pane-content"> Follow us email facebook twitter Google Plus instagram tumblr pinterest youTube rss </div> <div class="pane-content"> </div> <div class="pane-content"> Subscribe </div> <div class="pane-content"> </div> <div class="pane-content"> SU...

Linked on 2016-09-12 03:14:36 | Similar Links
dx
Actions filter for pull requests by dequis · Pull Request #116 · notifico/notifico · GitHub

Skip to content Personal Open source Business Explore Sign up Sign in Pricing Blog Support Search GitHub </textarea> '"` This repository Watch 18 Star 97 Fork 30 notifico / notifico Code Issues 37 Pull requests 2 Pulse Graphs base sha1: &quot;2d1a4200e573fc03dc0555f10252489c543b3ef3&quot; head sha1: &quot;fa5045a5add0f8a5afe4ffff64b4b7d86fb7ecb5&quot; Actions filter for pull requests #116 Open dequis wants to merge 3 commits into notifico : master base: master from dequis : actions +28 −10 Conversation 7 Commits 3 Files changed 1 </textarea> '"` None yet </textarea> '"` No milestone </textarea> '"` No one assigned dequis commented Jan 26, 2015 I limited it to pull requests only since that's...

Linked on 2016-09-11 22:21:14 | Similar Links
dx
[CLA NOT SIGNED] test [WIP] [DO NOT MERGE] by cblgh · Pull Request #3 · dequis/test · GitHub

Skip to content Personal Open source Business Explore Sign up Sign in Pricing Blog Support Search GitHub </textarea> '"` This repository Watch 1 Star 0 Fork 1 dequis / test Code Issues 2 Pull requests 1 Pulse Graphs base sha1: &quot;607734fb7a1b378112877188864fbd730fae2b53&quot; head sha1: &quot;6628f67edd79051695c30d2e4700ff4be3d2cd7d&quot; [CLA NOT SIGNED] test [WIP] [DO NOT MERGE] #3 Open cblgh wants to merge 1 commit into dequis : master base: master from cblgh : master +1 −1 Conversation 7 Commits 1 Files changed 1 </textarea> '"` bug duplicate enhancement help wanted invalid question wontfix </textarea> '"` 3.0 </textarea> '"` dequis cblgh commented Sep 11, 2016 • edited ...

Linked on 2016-09-11 22:14:40 | Similar Links
wisdom_exe on Twitter: "stop pushing people away"

Home Moments Search query Search Twitter Remove Verified account @ Suggested users Verified account @ Verified account @ Language: English Bahasa Indonesia Bahasa Melayu Català Čeština Dansk Deutsch English UK Español Filipino Français Hrvatski Italiano Magyar Nederlands Norsk Polski Português Română Slovenčina Suomi Svenska Tiếng Việt Türkçe Ελληνικά Български език Русский Српски Українська мова עִבְרִית العربية فارسی मराठी हिन्दी বাংলা ગુજરાતી தமிழ் ಕನ್ನಡ ภาษาไทย 한국어 日本語 简体中文 繁體中文 Have an account? Log in Have an account? Remember me · Forgot password? New to Twitter? Sign up wisdom_exe's profile wisdom_exe @ wisdom_exe wisdom_exe @ wisdom_exe hi i kno...

Linked on 2016-09-11 22:03:16 | Similar Links
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Pages are deceptive. Live life in a basket.