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Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
Embedded erlang-fscons-2010
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Embedded erlang-fscons-2010

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  • 1. Embedded Erlang Development environment for Embedded Erlang Fredrik Andersson, Niclas Axelsson, Fabian Bergström, Christoffer Ferm, Henrik Nordh, Gustav Simonsson Erlang Solutions Ltd. FSCONS Gothenburg, November 2010 Erlang Solutions Ltd.
  • 2. Copyright 2010 Erlang Solutions, Ltd Background • Thesis projects – Uppsala University and Erlang Solutions • Embedded Platform – OS platform for embedded devices • Embedded Erlang – Erlang on embedded devices • Erlang VM Extensions – Better hardware utilization • Framework for data sharing – Automatic data sharing
  • 3. Copyright 2010 Erlang Solutions, Ltd Motivation
  • 4. Copyright 2010 Erlang Solutions, Ltd Erlang • Development started 1987 at Ericsson Computer Science Lab. Released as opensource 1998, Ericsson is still the active maintainer • Native support for SMP and Concurrency using message passing • History in Telecom buisness. Designed with Robustness and Low Down Time in mind. • Used by among others, Facebook (Facebook chat), T-Mobile (WAP, SMS), Klarna (e-commerce)
  • 5. Embedded Platform Henrik Nordh, Gustav Simonsson
  • 6. Copyright 2010 Erlang Solutions, Ltd Embedded OS Usage
  • 7. Copyright 2010 Erlang Solutions, Ltd Goals • Minimal Linux system with Erlang and tools • Different versions for different purposes • Easy-to-install package • Reduce time-to-productivity for embedded Erlang developers
  • 8. Copyright 2010 Erlang Solutions, Ltd Metrics • Evaluating Linux distributions – memory – disk usage – boot times – harware support • Embedded focus
  • 9. Copyright 2010 Erlang Solutions, Ltd Allocated Memory After Boot Ubuntu-10.04-minimal-armel Ångström console-image Debian-5.0-lenny-arm Ångström minimal-image Modified Ångström 0 5 10 15 20 25 30
  • 10. Copyright 2010 Erlang Solutions, Ltd Root File System Size Ubuntu-10.04-minimal-armel Ångström console-image Debian-5.0-lenny-arm Ångström minimal-image Our Modified Ångström 0 50 100 150 200 250 300
  • 11. Copyright 2010 Erlang Solutions, Ltd The Ångström Distribution • Linux for embedded devices • Smallest image uses 11 MB disk, 16.2 MB memory • Default distribution for several devices – BeagleBoard – Gumstix – Pandora (portable gaming console) • Easy to customise with OpenEmbedded
  • 12. Copyright 2010 Erlang Solutions, Ltd OpenEmbedded • Framework for building embedded Linux Distributions • Several hardware architectures • 1000+ packages pre-defined • Quite complex, but powerful • Handles dependencies, sources, configuration, cross- compilation etc.
  • 13. Copyright 2010 Erlang Solutions, Ltd uClibc • Much smaller than glibc, smaller than EGLIBC • Source compatible with glibc, not binary compatible • Highly configurable
  • 14. Copyright 2010 Erlang Solutions, Ltd BusyBox • Smaller versions of UNIX utilities in a single binary • Written with size-optimisation and limited resources in mind • Very modular and configurable • Well-tested against uClibc
  • 15. Copyright 2010 Erlang Solutions, Ltd Maintaining Different Versions • “Minimal” • “Debug” • “Extended” • Binary installation packages for common platforms • Latest Erlang version included
  • 16. Adapting Erlang for Embedded Systems Fredrik Andersson, Fabian Bergström
  • 17. Copyright 2010 Erlang Solutions, Ltd Goals The Virtual machine must be adapted to the limited resources of embedded systems. • Low RAM consumption – How can we reduce RAM usage? – How will this impact performance? • Low Disk usage – How can we keep disk usage low? – Performance? • Benchmarks, analysis and documentaion.
  • 18. Copyright 2010 Erlang Solutions, Ltd Progress, Memory Usage 70k 80k 70k 60k 60k60k 60k 60k 60k 70k 80k 60k 60k 60k 60k 60k 60k 70k 60k 60k 60k 60k
  • 19. Copyright 2010 Erlang Solutions, Ltd Progress, Disk Usage Vanilla Erlang Compressed Applications -Os, strip, stripped beams 0 1 2 3 4 5 6 7 Size on disk Megabytes
  • 20. Copyright 2010 Erlang Solutions, Ltd Progress, Hardware • VM compiled for Gumstix, BeagleBoard – BeagleBoard is a prototyping platform – Gumstix is a much smaller system for commercial use • TI OMAP35x – Another thesis project for OpenGL and DSP from Erlang
  • 21. Copyright 2010 Erlang Solutions, Ltd The Future • Support for more hardware – Pandaboard, utilizing the latest multicore ARM processor • Documentation for embedded Erlang development – How should you utilize Erlang tools for handling project mangement • Real world application – Small measuring nodes in larger distributed systems
  • 22. Adding support for special purpose computing units to the Erlang VM Christoffer Ferm
  • 23. Copyright 2010 Erlang Solutions, Ltd Erlang VM Charasterics • Good support for SMP – Added in 2006 • Easy approach to utilizing SMP for developers – Message passing – Lightweight processes
  • 24. Copyright 2010 Erlang Solutions, Ltd Modern Processing Units • CPU – Already supported • GPU – OpenCL – Other GPGPU • Digital Signal Processor • Cryptoprocessors
  • 25. Framework for Data Exchange Between Mobile Nodes Niclas Axelsson
  • 26. Copyright 2010 Erlang Solutions, Ltd Introduction • Mobile devices with limited resources – Phones – Cars • Dynamic ad-hoc networks • Delay tolerant data
  • 27. Copyright 2010 Erlang Solutions, Ltd Features • Written in Erlang • Simple to configure • Takes care of the communication between nodes • Handles storage of data • A subscription system
  • 28. Copyright 2010 Erlang Solutions, Ltd Example Applications • Music player – share songs • Announcement systems • Statistics gathering
  • 29. The erlang-embedded homepage
  • 30. Copyright 2010 Erlang Solutions, Ltd www.erlang-embedded.com • First release “Stag Beetle” is already out. – Next release is scheduled around the 16th of november • Mailinglist – erlang-embedded@googlegroups.com • Github – http://github.com/esl/erlang-embedded
  • 31. Copyright 2010 Erlang Solutions, Ltd Thank you Questions?
  • 32. Copyright 2010 Erlang Solutions, Ltd The Hardware
  • 33. Copyright 2010 Erlang Solutions, Ltd Embedded Market • 2006: 4 billion embedded processors sold worldwide • 2010: 16 billion • 2020: 40 billion • Intel estimates 15 billion will be connected in swarms or over the Internet by 2015 • ARM announced embedded multi-core CPU in okt 2009

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