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FOSDEM 2019

Free and Open source Software Developers' European Meeting (FOSDEM) is a non-commercial, volunteer-organized European event centered on free and open-source software development.


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FOSDEM 2019
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by Sergei Golubchik At: FOSDEM 2019 https://video.fosdem.org/2019/UA2.118/stats_optimizer.webm When your SQL query reaches the DBMS, it's the optimizer job to decide how to execute it for you to get the result as fast as possible. To make this decision optimizer can examine the actual table data, but with multi giga- and terabyte tables, the only practical solution is to use various data statistics that was collected in advance. The better the statistics is and the more precisely it describes...
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FOSDEM 2019
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by Edward Betts At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.126/geo_osmwikidata.webm Wikidata and OpenStreetMap are collaborative open data projects that contain structured data for real world places and things. Adding links between the projects makes the data more useful, but doing this by hand is laborious. I've written a software tool that automates much of the process. Editors of OpenStreetMap can use my software to search for a place or region, generating a list of candidate matches...
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Keeping Track of Stateful Infrastructure An overview over InnoGames infrastructure and the tools we build by Patrick Meyer At: FOSDEM 2019 https://video.fosdem.org/2019/UB2.252A/keeping_track_stateful_infrastructure.webm At InnoGames we have to keep track of three collocations, ~30 racks with thousands of VMs to run games for over 200 million registered users. We have to manage our self hosted as well as various external services and preferably do so in a way that does not wake our oncall admin...
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FOSDEM 2019
by FOSDEM
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by Vitaly Kuznetsov At: FOSDEM 2019 https://video.fosdem.org/2019/H.2213/vai_enlightening_kvm.webm Is running a Windows guest any different from Linux from KVM's perspective? KVM can pretend being Hyper-V and this is actively used for running Windows guests. Following Hyper-V naming convention, individual features are named "enlightenments": some of them are already mature, some of them were just added to KVM and some are still waiting to be implemented. What are these features and...
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FOSDEM 2019
by FOSDEM
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by Stephano Cetola and Alexander Graf At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.401/uefi_boot_for_mere_mortals.webm Over the past decade the Unified Extensible Firmware Interface (UEFI) has become the primary standard for boot firmware. However, the complexity of the UEFI spec and the myriad of implementation choices can be confusing to even experienced developers. Fortunately, there are a growing number of open source UEFI implementations for different architectures, making it easier...
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FOSDEM 2019
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by Vsevolod Stakhov At: FOSDEM 2019 https://video.fosdem.org/2019/K.3.401/rspamd_integration_freebsd.webm After years using SpamAssassin on FreeBSD.org, we have moved towards Rspamd last year to improve spam filtering and integrate it as milter to postfix. With this step we could impressively drop spam rate and increased performance comparing to SpamAssassin. In this presentation, we plan to describe the current architecture of the email system and how Rspamd fits into it. Then we will describe...
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FOSDEM 2019
by FOSDEM
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by Michal Rostecki At: FOSDEM 2019 https://video.fosdem.org/2019/H.2214/cilium_overview_and_updates.webm Cilium is on open source project which provides networking, security and load balancing for containers by using eBPF and XDP technologies in the Linux kernel. It provides eBPF and XDP features to CRI-O, Docker and Kubernetes. This talk will present an overview on Cilium, explain the concepts behind it and then provide the project update, as it reached the 1.0 milestone last year. Bio: Michal...
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FOSDEM 2019
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by Morgan Tocker At: FOSDEM 2019 https://video.fosdem.org/2019/UA2.118/tidb.webm TiDB is an open source distributed scalable hybrid transactional and analytical processing (HTAP) database built by PingCAP. It also speaks the MySQL protocol and uses RocksDB as the underlying storage engine! This talk provides an introduction and overview of TiDB, tailored for those with a strong background in MySQL. I will use MySQL as an example to explain various implementation details of TiDB, and translate...
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by Timofey Bryksin At: FOSDEM 2019 https://video.fosdem.org/2019/H.2213/ml_on_code_kotlin_anomalies.webm This talk will discuss code anomalies — code fragments that are written in some way that is not typical for the programming language community. Such code fragments are useful for language creators as performance tests, or they could provide insights on how to improve the language. With Kotlin as the target language, we discuss how the task of detecting code anomalies for a very large...
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FOSDEM 2019
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by Joshua Izaac At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.121/xanadu_strawberry_fields.webm n this talk, we introduce Strawberry Fields, an open-source quantum software library for light-based quantum computers. Built in Python, Strawberry Fields is a full-stack library for design, simulation, optimization, and quantum machine learning of photonic quantum circuits. The platform consists of three main components: (i) an API for quantum programming based on an easy-to-use language named...
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FOSDEM 2019
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by Davy Engone (Hackages) At: FOSDEM 2019 https://video.fosdem.org/2019/H.1308/web_components_future.webm I used to talk about Web Components as the future of the web and this future is here and now. During this talk, I'll show you how you can effectively use these technologies today in your application regardless of your tech stack. From Angular to React including VueJS and Polymer, during this talk, I'll show you a practical way of using Web Components in 2019. Room: H.1308 (Rolin) Scheduled...
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FOSDEM 2019
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by Folkert Huizinga At: FOSDEM 2019 https://video.fosdem.org/2019/H.2215/leela_chess.webm This talk presents an overview of the open source project "Leela Chess Zero" (Lc0), a new type of chess engine based on the AlphaZero paper released by DeepMind. Lc0 learns to play chess solely by playing against itself without any human knowledge or intervention. Starting from scratch with random moves, its play improves each iteration using a powerful combination of reinforcement learning and...
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FOSDEM 2019
by FOSDEM
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by Bastian Bloessl At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.120/gr_scapy.webm Most GNU Radio modules focus on the physical layer and less on creating standard compliant data payloads. In this talk, we'll show how easy it is to combine GNU Radio implementations of WLAN and ZigBee with Scapy, a powerful interactive packet manipulation program. Using Scapy, we can quickly craft our own packets and poke at other stations (e.g., by sending deauths) or fuzzing its network stack (e.g, to test...
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by Andrea Barberio and David Hendricks At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.401/open_source_firmware_at_facebook.webm LinuxBoot is an embedded Linux-based environment intended to be integrated into the firmware on the boot ROM. It provides an open, reliable way of initializing hardware and booting a target operating system. It can even replace large portions of proprietary and closed firmware on existing systems. We are experimenting with it at Facebook for speed, reliability,...
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FOSDEM 2019
by FOSDEM
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by Alexandre Brianceau At: FOSDEM 2019 https://video.fosdem.org/2019/UB2.252A/configurations_prove_yours.webm How can we be sure of the continuous configuration management proper operation? How to expose factual topic-related reports to dev, sec, managers, customers...? We believe that, in order to deliver the full business and collaboration value of continuous configuration management, the solution needs to go further than simply applying policies - it must ensure configuration reliability;...
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FOSDEM 2019
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by Paul Girard At: FOSDEM 2019 https://video.fosdem.org/2019/H.1308/graph_french_trade_study.webm France started to compile statistics about its trade in 1716. The "Bureau de la Balance du Commerce" (Balance of Trade's Office) centralized local reports of imports/exports by commodities produced by french tax regions. Many statistical manuscript volumes produced by this process have been preserved in French archives. This communication will relate how and why we used network...
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Next Generation Internet initiative - Year Zero Come work for the internet on privacy, trust, search & discovery by Michiel Leenaars At: FOSDEM 2019 https://video.fosdem.org/2019/H.2215/nextgen_internet.webm Last year during a FOSDEM keynote Michiel Leenaars, director of strategy at NLnet foundation, introduced the Next Generation Internet initiative together with member of the European parliament Marietje Schaake. NGI aims to be the first concerted effort to put significant public funding...
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FOSDEM 2019
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by Scott Hanselman At: FOSDEM 2019 https://video.fosdem.org/2019/Janson/open_source_microsoft.webm Scott will talk about the last ten years at Microsoft. Scott went there specially to open source .NET and promote open source in general to a company that wasn't (at the time) OSS friendly. A decade later we have achieved that and .NET Core runs everywhere from microcontrollers to iPhones to any cloud. 40% of Azure runs Linux. .NET Core runs on every Linux and the full stack is open source, all...
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Asterisk WebRTC frontier: make client SIP Phone with sipML5 and Janus Gateway Analyzing a real project on production (www.nethvoice.it) we will look at two different implementations of a SIP Phone WebRTC of NethCTI Web App. We will see great code examples, WebRTC technologies and a real demo of an audio/video call by Alessandro Polidori At: FOSDEM 2019 https://video.fosdem.org/2019/H.1309/webrtc_sip_phone.webm We will analyze the steps to make audio & video communications (as SIP Phone...
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FOSDEM 2019
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by Merlijn B. W. Wajer At: FOSDEM 2019 https://video.fosdem.org/2019/H.2215/maemo_leste_mobile.webm Maemo Leste is community a Debian/Devuan based GNU/Linux distribution for smartphones and tablets aimed at free software hackers. In spirit and look it is similar to the Maemo Fremantle OS for the famous Nokia N900 phone. This talk will present the current (alpha) state of Maemo Leste, the presently supported devices, our development setups, the present and upcoming challenges and lay out the...
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FOSDEM 2019
by FOSDEM
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by Nikolai Kondrashov At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.401/microcontroller_firmware_from_scratch.webm Follow a journey of writing STM32 microcontroller firmware from scratch, using open-source tools. Follow Nikolay Kondrashov's journey of learning to write firmware for an STM32 microcontroller (the Blue Pill one) from scratch, using only open-source tools. From blinking LEDs, to controlling a toy car, without the complicated, and license-restricted manufacturer's libraries, or...
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FOSDEM 2019
by FOSDEM
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by Kuba Podgórski At: FOSDEM 2019 https://video.fosdem.org/2019/UD2.120/gitdatabase.webm Data retrieval team at source{d} process lot of data from git repositories. Most of the key components in our workflow like engine, gitbase, mysql-server are implemented in Go. This talk will go through the story how we embedded "pilosa" (distributed bitmap index) in our SQL frontend for git repositories. - Why we decided to use bitmaps as indexes - How we got to the point where we are (we have...
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Organisational Processes in Decentralized Software roundtable open to decentralized software developers by Natacha Roussel and zeyev At: FOSDEM 2019 https://video.fosdem.org/2019/UD2.218A/organisational_processes_in_decentralized_software.webm We would like to invite developers for a round table to discuss the specificity of the organization of decentralized software, and to address organizational issues that are crucial for the survival of the projects we love. F/LOSS development is often...
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FOSDEM 2019
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by Roy Derks (@gethackteam) At: FOSDEM 2019 https://video.fosdem.org/2019/H.1308/testing_graphql_javascript.webm Test GraphQL in your JavaScript application. This talk will show how you can test GraphQL in your JavaScript application using available open-source packages. It will describe how to get started, best practices and a real-world example. Room: H.1308 (Rolin) Scheduled start: 2019-02-03 15:00:00+01 Source: https://www.youtube.com/watch?v=IJV1IwIejM0 Uploader: FOSDEM
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FOSDEM 2019
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by Nicolas Auvray At: FOSDEM 2019 https://video.fosdem.org/2019/H.2215/0ad_rts.webm 0 A.D. is a free and open-source game of ancient warfare. It is a real-time strategy game which can compete with the classics of the industry, but comes with absolutely no cost for the players. Come and discover your new favorite game! We will present the game, its features and beautiful art, and its completion state: the game is fully playable, with a challenging AI for solo players and a fully-fledged...
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by Ricardo Noriega At: FOSDEM 2019 https://video.fosdem.org/2019/H.2214/ansible_networking_and_odl_integration.webm Ansible is one of the fastest growing projects in the history of opensource. It is simple, flexible and powerful, and there is a huge community behind it. Ansible is capable of automate systems, storage and of course, networking. However, Ansible is stateless, and from the network engineer standpoint, a stateful view of the network topology is needed. There is where OpenDaylight...
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FOSDEM 2019
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by Holden Karau and Kris Nova At: FOSDEM 2019 https://video.fosdem.org/2019/H.2213/ml_on_code_code_review_mailing_list.webm Many of us have seen the small PR changing 20 lines with 20 comments and the large PR with over 1k line changes sail through (or stall) with no comments because who has the time to read all that text? What if we could predict areas of the PR that are more likely to need attention? Many of us have seen the small PR changing 20 lines with 20 comments and the large PR with...
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FOSDEM 2019
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by Martin Sustrik At: FOSDEM 2019 https://video.fosdem.org/2019/H.2215/structured_concurrency.webm We've got rid of GOTO and the spaghetti code it leads to in 1970's. However, we are encoutering very much the same problems when writing concurrent code even now, 50 years later. Programmers are still stuck deep in the callback hell or state machine hell. Concurrent code still looks like spaghetti. And while Go language provided a tool to write unspaghettified concurrent code to the masses, by no...
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FOSDEM 2019
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by Holger Woltersdorf At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.601/amendment_async_php_requests_and_reactive_responses_with_php_fpm.webm There are many approaches to execute PHP sub-tasks asynchronously or to parallelise PHP execution. While some solutions require extra extensions, individual PHP builds or a lot of process control management, this talk will show you how to configure and use the built-in PHP FastCGI Process Manager (php-fpm) to execute requests asynchronously in an...
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FOSDEM 2019
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by Quentin Monnet At: FOSDEM 2019 https://video.fosdem.org/2019/H.2214/network_filtering_with_bpf.webm At the core of fast network packet processing lies the ability to filter packets, or in other words, to apply a set of rules on packets, usually consisting of a pattern to match (L2 to L4 source and destination addresses and ports, protocols, etc.) and corresponding actions (redirect to a given queue, or drop the packet, etc.). Over the years, several filtering frameworks have been added to...
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FOSDEM 2019
by FOSDEM
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by Alexander Condello At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.121/dwave_sdk.webm D-Wave's Ocean software tools are an open source ecosystem for solving customer-scale problems on the quantum computer. The D-Wave System solves a particular problem - the Binary Quadratic Model (also known as the QUBO or Ising problem). We will provide an overview of the open source tools that are used to express your problem as a BQM and to convert that BQM into something that can be solved by the...
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FOSDEM 2019
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by Geert Uytterhoeven At: FOSDEM 2019 https://video.fosdem.org/2019/H.2213/vai_getting_to_blinky.webm Virtualization, including safe pass-through guest access to devices, is a well-known and mature technology on servers. With the increasing complexity and abilities of SoCs, virtualization is gaining importance on embedded systems, too. In this presentation, Geert will explore virtualization and device pass-through (VFIO) using QEMU and KVM on a Device Tree-based embedded ARM system, pursuing...
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FOSDEM 2019
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by Mikayla Hutchinson At: FOSDEM 2019 https://video.fosdem.org/2019/K.3.201/dotnet_typescript_lightning_talks.webm Do you want to give a talk about .NET or Typescript but didn't submit a proposal in time? Sign up on the day for a lightning talk! Slots will be around 5 minutes. Although you can sign up in person at the event, if you'd like to discuss your talk idea in advance, feel free to email m.j.hutchinson at gmail. Room: K.3.201 Scheduled start: 2019-02-02 18:15:00+01 Source:...
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FOSDEM 2019
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by Lewis Revill At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.201/llvm_apollo.webm Nearly 50 years ago on the 20th of July 1969 humans set foot on the moon for the first time. Among the many extraordinary engineering feats that made this possible was the Apollo Guidance Computer, an innovative processor for its time with an instruction set that was thought up well before the advent of C. So 50 years later, why not implement support for it in a modern compiler such as LLVM? This talk will...
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FOSDEM 2019
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by Gernot Heiser At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.121/world_of_sel4.webm This talk will cover the developments of and around seL4 over the past 4 years, covering new and improved functionality for supporting mixed-criticality real-time systems, status and future of its formal verification, an overview of past and future deployments, and an assessment of the state of seL4's open-source ecosystem. seL4 is the world's first (and still only real-world suitable) operating system...
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FOSDEM 2019
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by Shelley Lambert At: FOSDEM 2019 https://video.fosdem.org/2019/H.1302/tested_business.webm With the proliferation of OpenJDK binaries for a developer or a business to choose from, one factor in determining the selection is quality. How do you know your choice is up to snuff? The AdoptOpenJDK Quality Kit is an open and transparent verification story for OpenJDK binaries. A robust and adaptable test kit that can be utilized by any OpenJDK implementor, and represents the quality bar required by...
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FOSDEM 2019
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by Mary Bennett At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.126/riscvsail.webm At the GNU Tools Cauldron, my colleague, Jeremy Bennett, showed how the long established GNU tool, CGEN, can be used to create an assembler, disassembler and simulator from a semi-formal description of the RISC-V architecture in Scheme (https://gcc.gnu.org/wiki/cauldron2018#cgen). However the CGEN specification in Scheme is far from rigorous by today's standards. Alastair Reid of ARM has shown how SAIL can be...
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FOSDEM 2019
by FOSDEM
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by Han Lee At: FOSDEM 2019 https://video.fosdem.org/2019/K.3.201/dotnet_intel_intrinsics_netcore.webm In this presentation, we will talk about the Intel Hardware Intrinsics in .NET Core, a new feature in .NET Core 3.0. For the first time, .NET developers will have the ability to directly exercise underlying CPU features, very similar to what C/C++ developers could do with intrinsic functions for their performance critical code. The Intel Hardware Intrinsics in .NET Core include more than 1300...
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FOSDEM 2019
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by Stephane Carrez At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.125/ada_secureweb.webm Web application security is often underestimated, and using a secure framework can help reduce application vulnerabilities. Ada Web Application (AWA) is a web framework that leverages Ada's safety features to provide a secure environment on top of which safe applications are built. AWA is based on several Java-like technologies such as Java Beans, Java Servlet, Java Server Faces, other standards such as...
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FOSDEM 2019
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by Ilya Kosmodemiansky At: FOSDEM 2019 https://video.fosdem.org/2019/UA2.220/latest_evolution_of_linux_io_stack_explained_for_database_people.webm Input-output performance problems are on every day agenda for DBAs since databases exist. In Linux - probably the most popular operating system for databases now - there is a major overhaul of the IO stack for last several years. In this talk i will review what is going on there, why the IO stack needed an urgent improvement and what all those brand...
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ONOS Introduction Overview of ONOS, Open Network Operating System from ONF, the Open Networking Foundation. by Laszlo Papp At: FOSDEM 2019 https://video.fosdem.org/2019/H.2214/onos_introduction.webm ONOS is an open source project, written in Java that aims to deliver a software-defined networking (SDN) OS focusing on scalability, high availability, and high performance. The session will go over the ONOS modular architecture, its main tenets, use cases, and applications. It will describe the...
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Porting U-Boot to a Modular Device Booting Linux via U-Boot on a board which can be composed of several different modules by Marek Behún At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.401/porting_u_boot_to_a_modular_device.webm Currently, Das U-Boot and Linux use device tree to specify how the different hardware components are connected to each other on a board. If a board has a way via which the user can plug in another hardware component, unless we are talking about universal buses like...
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FOSDEM 2019
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by Tor Lillqvist At: FOSDEM 2019 https://video.fosdem.org/2019/UA2.114/collabora_office_on_ios.webm After several years of only occasional progress but mostly stagnation, resources have now been available for work on a LibreOffice-based app for iOS. This talk will describe the history and technical aspects of the effort. Collabora Office for iOS is based on the C++ server-side code for Collabora Online (based on LibreOffice Online), and JavaScript code for the same (browser-side). Plus the core...
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FOSDEM 2019
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by Jeremy Lainé At: FOSDEM 2019 https://video.fosdem.org/2019/H.1309/beyond_webrtc_monoculture.webm WebRTC’s most prominent implementations rely on the webrtc.org codebase. In this talk, Jeremy Lainé and Lennart Grahl will present two alternative WebRTC / ORTC implementations (aiortc in Python and RAWRTC in C), their use cases, the challenges in writing these implementations and the benefits for the WebRTC ecosystem. Both Chrome’s and Firefox’s (to some extent) WebRTC implementations...
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by Martin Braun At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.120/sdr_grfec.webm In the 1940s, Shannon proved that we can transmit data error-free depending on rate and SNR. In practical radios, we need to employ forward error correction (FEC) to achieve those rates. GNU Radio has a built-in component to handle FEC, called gr-fec. After some basics of FEC, we will see how GNU Radio does this, and how it can be extended. Room: AW1.120 Scheduled start: 2019-02-03 10:00:00+01 Source:...
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FOSDEM 2019
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by Damien François At: FOSDEM 2019 https://video.fosdem.org/2019/UA2.118/convergence_hpc_big_data.webm There are mainly two types of people in the scientific computing world: those who produce data and those who consume it. Those who have models and generate data from those models, a process known as 'simulation', and those who have data and infer models from the data ('analytics'). The former often originate from disciplines such as Engineering, Physics, or Climatology, while the latter are...
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FOSDEM 2019
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by Lorenzo Fontana At: FOSDEM 2019 https://video.fosdem.org/2019/K.1.105/ebpf_kubernetes.webm Since the Linux kernel 4.x series a lot of enanchements reached mainline to the eBPF ecosystem giving us the capability to do a lot more than just network stuff. The purpose of this talk is to give an initial understanding on what eBPF programs are and how to hook them to programs running inside Kubernetes clusters in order to answer targeted questions at cluster level but about very specific...
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FOSDEM 2019
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by Matias Vara At: FOSDEM 2019 https://video.fosdem.org/2019/H.2213/vai_ppeeding_up_the_booting_time_of_a_toro_appliance.webm Microservices propose a new paradigm to split monolithic cloud infrastructure into unitary services which allow better scaling of the global infrastructure by integrating heterogeneous technologies. Current cloud infrastructure allows to implement cheap microservices by hosting them in VMs. To leverage host resources, VMs are launched on demand, i.e., when the...
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FOSDEM 2019
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by Mitchell Baker At: FOSDEM 2019 https://video.fosdem.org/2019/Janson/floss_internet_future.webm The FLOSS movement is not just about convenience; our DNA includes a set of values that bring life to FLOSS. We’ve seen some of these values encoded in the infrastructure of the Internet and online life. We’ve also seen very troubling characteristics emerge online, where individuals and society face new and sometimes explosive risk. This talk explores how the FLOSS movement might reevaluate our...
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FOSDEM 2019
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by Hans de Goede At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.401/flickerfree.webm Presentation on the recent "flickerfree" boot work, where the goal is to go from the firmware splashscreen/logo to the GUI in one fluid experience without any modesets (causing the screen to blank) or transitions to text-mode. Topics discussed during the presentation are: The changes made to each of the involved components The upstream status of these changes Steps to take to enable this A typical...
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FOSDEM 2019
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by Yanir Quinn At: FOSDEM 2019 https://video.fosdem.org/2019/H.2213/vai_monitoring_kubernetes.webm Now that Kubevirt, a converged infrastructure that brings virtualization on top of Kubernetes came into the world, it’s time to take a look on the monitoring aspects of this solution. This talk will go through some of the popular monitoring solutions and integrations that exist for Kubernetes, a sneak peak of how monitoring is done for Virtual machines on oVirt's open-source distributed...
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FOSDEM 2019
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by Ron Pressler At: FOSDEM 2019 https://video.fosdem.org/2019/H.1302/loom_weaving_executions.webm Project Loom’s mission is to make it easier to write, debug, profile and maintain concurrent applications under heavy load. Threads are a natural and convenient concurrency construct which is being supplanted by less convenient abstractions because their implementation as OS kernel threads is insufficient for meeting performance demands and wasteful in computing resources. Project Loom will...
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by Ognyan Chikov At: FOSDEM 2019 https://video.fosdem.org/2019/H.1302/etherlime.webm With Etherlime we aim to solve issues in the deployment of smart contracts and to allow developers to write their own scripts. This way they are not constrained to just the deployment transactions but also they can use the newly deployed contracts right away as part of the initialization sequence. In September 2018 our project received funding from Ethereum foundation, Ethereum community fund and ETHPrize....
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XWiki: a collaborative apps development platform Build applications incrementally on top of XWiki rather than coding them from scratch by Anca Luca At: FOSDEM 2019 https://video.fosdem.org/2019/UD2.119/collab_wdaw.webm XWiki's advanced features for structuring data and scripting in wiki pages make it suitable for developing applications of various sizes, for various needs. The wiki principle make all these applications collaborative by default, while the multiple UI configuration options and...
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High performance virtual machines in oVirt Explain oVirt solution for easy creation of virtual machines running in highest possible performance by Sharon Gratch At: FOSDEM 2019 https://video.fosdem.org/2019/H.2213/vai_high_preformance_vms.webm Running a virtual machine enables the user with a high level of flexibility in the expense of the virtual machine's performance. Users are sometimes required to run applications on a virtual machine but still gain performance metrics as close to bare...
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FOSDEM 2019
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by Hanoch Haim At: FOSDEM 2019 https://video.fosdem.org/2019/H.2215/trex_generator.webm TRex is an open source, low cost, stateful and stateless traffic generator fuelled by DPDK. Used by Open source projects like DPDK, OPNFV, DPDK-OVS, fd.io VPP for benchmark SDN/VNF solutions in very high scale. TRex is an open source, low cost, stateful and stateless traffic generator fuelled by DPDK. It generates L4-7 traffic based on pre-processing and smart replay of real traffic templates . TRex...
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Introduction of OSS Weaviate, the Decentralised Knowledge Graph What is a decentralised knowledge graph and what is the contextionary that powers it? by Etienne Dilocker At: FOSDEM 2019 https://video.fosdem.org/2019/H.1308/graph_weaviate_knowledge_graph.webm Weaviate is an open source decentralized knowledge graph. During this talk, I will introduce the software Weaviate, present specific use cases, present Weaviate's architecture, and introduce one of the core features: the contextionary. More...
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FOSDEM 2019
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by Ross Lagerwall At: FOSDEM 2019 https://video.fosdem.org/2019/H.2213/vai_implementing_uefi_variable_services_in_qemu.webm UEFI is a replacement for the BIOS. It supports Secure Boot which is signature verification of bootloaders and OS kernels which helps prevent attacks where malware injects itself into the bootloader or kernel so that it can be loaded during startup. Despite the poor reputation that Secure Boot has in the free software community (mostly due to non-technical reasons), this...
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FOSDEM 2019
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by Kim Hammar At: FOSDEM 2019 https://video.fosdem.org/2019/UA2.118/feature_store.webm Data may be the new oil, but refined data is the fuel for AI. Machine learning (ML) systems are only as good as the data they are trained on and getting the data in the right format at the right time is a challenge. ML systems are trained using sets of features, a feature can be as simple as the value of a column in a database entry, or it can be a complex value that is computed from diverse sources. A...
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VPP & Ligato use cases: Contiv/VPP CNI plugin for Kubernetes & IPSEC VPN gateway Development of cloud-native network functions with VPP & Ligato by Giles Heron and Rastislav Szabo At: FOSDEM 2019 https://video.fosdem.org/2019/H.2214/vpp_ligato_as_ipsec_gateway.webm In this talk, we will introduce FD.io VPP and the Ligato cloud-native networking framework and demonstrate how these are used to address two use cases - a CNI plugin for Kubernetes (Contiv/VPP) and an IPSEC VPN gateway....
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FOSDEM 2019
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by Sambhav Kothari and Diego Ceccarelli At: FOSDEM 2019 https://video.fosdem.org/2019/K.3.201/learning_to_rank.webm Internet search has evolved from its early days. It has become smarter and more natural, and people expect it to “just work.” But, anyone who has worked behind-the-scenes with a search engine knows exactly how hard it is to get the “right” results to show up at the right time. Not to mention, what happens when the trends change, when your users’ favorite weirdly-shaped...
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FOSDEM 2019
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by Ilya Etingof At: FOSDEM 2019 https://video.fosdem.org/2019/UB2.252A/writing_asynchronous_snmp_agents.webm Room: UB2.252A (Lameere) Scheduled start: 2019-02-03 16:40:00+01 Source: https://www.youtube.com/watch?v=h4R_nKnlPSw Uploader: FOSDEM
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FOSDEM 2019
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by Leon Anavi At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.125/guide_to_oshw.webm The popularity of the open source hardware movement and IoT is constantly increasing. But is it worth making open source hardware using expensive proprietary software? Of course not! In this presentation Leon Anavi will share his experience in developing IoT by designing printed circuit boards (PCB) with the free and open source EDA tool KiCAD, the open source hardware certification program of OSHWA,...
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FOSDEM 2019
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by Jeremy Allison At: FOSDEM 2019 https://video.fosdem.org/2019/H.2214/smb2_posix_extensions.webm The SMB3 POSIX Extensions, a set of protocol extensions to allow for optimal Linux and Unix interoperability with NAS and Cloud file servers, have evolved over the past year, with test implementations in Samba and in the Linux kernel. These extensions address various compatibility problems for Linux and Unix clients (such as case sensitivity, locking, delete semantics and mode bits among others)....
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FOSDEM 2019
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by Jasper Nuyens At: FOSDEM 2019 https://video.fosdem.org/2019/K.1.105/tesla_hacking.webm How and why hack a Tesla and its Linux systems? What is possible, implemented and 'to-do'? Call for joining the new world of Electric Vehicle Hacking. Do you want to help to bring some Freedom to our cars? My 'Tesla Hacking' evolved to a broader project 'FreedomEV'. Building a community to encourage and build better and OpenSource sofware for in-vehicle entertainment and beyond... The current state of...
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FOSDEM 2019
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by Clément Oudot At: FOSDEM 2019 https://video.fosdem.org/2019/H.2215/lemonldap.webm LemonLDAP::NG is a free WebSSO software, implementing CAS, SAML and OpenID Connect protocols The 2.0 version is a major step in LemonLDAP::NG history. It brings brand new features as second factor authentication, SSO as a Service, devops Handler, etc. This talk will present how the software works, and the main new features. Room: H.2215 (Ferrer) Scheduled start: 2019-02-03 15:20:00+01 Source:...
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FOSDEM 2019
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by JC Brand At: FOSDEM 2019 https://video.fosdem.org/2019/H.1309/converse_xmpp.webm Converse (and XMPP) provides a federated alternative to other chat apps. You can set up a chat instance for your own project or team, while still using the same account to join other team chats on other servers. In this talk I'll show the advances that have been made the last two years, discuss some of the challenges we're facing and explain how we're improving and extending the XMPP protocol to fulfill modern...
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Dynamic answer generation with Lua An exploration of the LUA record from the upcoming PowerDNS release by Pieter Lexis At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.601/dns_powerdns_lua_record.webm This talk will focus on an in-zone way of generating dynamic answers to DNS queries using Lua. These LUA records look like TXT in the zone, but the authoritative server will run the code that is inside them to answer a query. This talk details the design, implementation and usecases of these...
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FOSDEM 2019
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by Sage Weil At: FOSDEM 2019 https://video.fosdem.org/2019/H.2214/ceph_project_status_update.webm Project status update, and preview of what is new in the Ceph Nautilus release, due out this month. Management dashboard, unified orchestration CLI and GUI across kubernetes and bare metal environments, device failure prediction, PG num autoscaling, memory autoscaling, live RBD image migration, and more. Room: H.2214 Scheduled start: 2019-02-03 10:55:00+01 Source:...
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FOSDEM 2019
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by Matias Martinez At: FOSDEM 2019 https://video.fosdem.org/2019/H.2213/ml_on_code_astor.webm Astor is an open-source framework for repairing buggy Java program, which includes 5 publicly available repair approaches. Those repair approaches take as input a buggy Java program (having at least one failing test case that exposes the bug) and search for a patch that produces all test cases to pass. Astor provides twelve extension points that form the design space of program repair. Using those...
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Open Source Hardware for Smart City OSHW LoRaWAN implementation for Parking, Air quality, City lighting and Waste management by Tsvetan Usunov At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.125/oshw_smart_city.webm Smart City concept includes Park Management, City Lighting management, Waste Management, Public Transport monitoring and management, Air quality monitoring, Security and People Healthcare alerts and monitoring. Olimex is working on OSHW solutions for two popular LWPAN...
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FOSDEM 2019
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by Jeffry Molanus At: FOSDEM 2019 https://video.fosdem.org/2019/H.2214/openebs_breaking_million_iops_barrier.webm Container Attached Storage was introduced at FOSDEM last year, we will revisit the basic concept shortly and give an update how we have abstracted storage fully in user space, and are capable of breaking the million IO barrier with the latest data engine. Last years talk was more a generic introduction about the concepts and ideas around openEBS. This time around we will go over...
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FOSDEM 2019
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by Tom Marble, Charles Eckel, Nithya Ruff, Duane O'Brien and Jeff McAffer At: FOSDEM 2019 https://video.fosdem.org/2019/UA2.220/foss_inside_companies.webm Companies regularly use and contribute to FOSS. Most larger companies now employee internal staff who make policy decisions, recommend Tools, oversee license compliance, teach others about FOSS, and interpret community politics for the company. Different offices and departments usually differ in their approaches to managing, using,...
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FOSDEM 2019
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by David Shah At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.125/trellis_and_nextpnr.webm Following on from Project Icestorm; Project Trellis has created bitstream documentation for the substantially larger Lattice ECP5 FPGAs. This has been combined with a new multi-architecture FOSS place-and-route tool, nextpnr, and the existing Yosys Verilog synthesis tool to build a fully-FOSS FPGA flow for these parts; capable of building advanced designs including SoCs running Linux! This talk will...
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FOSDEM 2019
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by Rémi Duraffort At: FOSDEM 2019 https://video.fosdem.org/2019/H.2215/lava_federated_testing.webm LAVA is an automated validation architecture primarily aimed at testing deployments of systems based around the Linux kernel on ARM devices, specifically ARMv7 and later. LAVA is becoming the de facto standard to test software (bootloader, kernel, userspace) on development boards (rpi, juno, beagle, ...). It's used by many projects to build large testing systems like kernelci. LAVA is at the same...
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