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Ben Pashkoff - java embedded - 24mai2011

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  • 1. 1
  • 2. <Insert Picture Here>Java for Embedded DevicesBen Pashkoff (benjamin.pashkoff@oracle.com)Principle Sales Consultant(Based on presentations by Greg Bollella and Robert Vandette) 2
  • 3. The following is intended to outline our generalproduct direction. It is intended for informationpurposes only,and may not be incorporated into any contract. Itisnot a commitment to deliver any material, code,or functionality, and should not be relied upon inmaking purchasing decisions.The development, release, and timing of anyfeatures or functionality described for Oracle’sproducts remains at the sole discretion of Oracle. 3
  • 4. One Additional CaveatMaterial in this presentation is subject to change with no prior notification based on any announcements or changes that may be communicated by Oracle Corporation at Oracle OpenWorld, Oracle Develop or Oracle Java One. 4
  • 5. Program Agenda• What is Java Embedded <Insert Picture Here>• ME Embedded Background• SE Embedded Background• Oracle Java for Embedded Solutions Overview• Trends, Futures• Resources• Q&A• Demonstrations (Time Permitting) 5
  • 6. Quiz time!! WHO is the “Father” of Java? CA B E D 6
  • 7. Java Metrics • 5 billion Java Cards in use • 3 billion Java-based handsets • 850+ million Java desktops • 90+ million Java-based TV devices • All Blu-ray disc players ship with Java • Many more embedded devices with Java everywhere 7
  • 8. What comprises a “complete” embedded system? Input Output Compute OS Programming Model Programming Tools 8
  • 9. Trends in Embedded Systems Design• Larger code bases• More complex code• More function• Faster development cyles• Connection to Internet• Connection to OEM HQ• BOM costs *still* crucial• More HW features 9
  • 10. Embedded Microprocessor Trends • Cortex A5 Dual Core • Atom Dual Core Processors • PowerPC QorIQ Family • Cortex A9 Dual/Quad Core • N550 1.5ghz 8.5w • P2020 Dual Core 1.2ghz • 250mw power 1ghz today • D525 1.8ghz 13w • P4080 Quad Core 1.5ghz•ARM Eagle Cortex A15 Coming • D510 1.66ghz 13w Embedded Communication • Quad 2.5 ghz! • 330 1.6ghz 8w Processors• Nvidia Tegra 2 – 1ghz Dual A9 • Marvell Quad-Core•TI OMAP4 Dual core Cortex-A9 Common Themes • Embedded Multi-Core is everywhere • ARM continuing low power legacy, Intel moving into that space with Atom • ARM setting sights on server market 10
  • 11. Java Features• Proven & Stable• Huge Developer Base• Rapid Application Development• Fully Object Oriented• Run on a Virtual Machine – Memory Management, Portability, Cross Platform …• Multi-Thread, -Process and -CPU/Core support• Security• Networking• Deployment 11
  • 12. Java: The Best Platform for Embedded Applications Decouples software development from Most popular embedded processors1 hardware development cycle 6 supported allowing design flexibility Development and testing can be done Support for key embedded features (low2 (mostly) using standard desktop systems 7 footprint, power mgmt., low latency, etc) Highly productive language, APIs, runtime, Leverage huge Java developer3 and tools mean quick time to market 8 ecosystem (expertise, existing code) Create high-performance, portable, secure, Easily create end-to-end solutions4 9 integrated with Java back-end services robust, cross-platform applications easily Java isolates your apps from language and Solutions from constrained devices to5 10 server-class systems platform variations (e.g. C/C++, kernel, libc differences) 12
  • 13. Paradigm shift Embedded Java perceptionBefore: Embedded = Java ME Targeted at small devices (~32MB or less) Handheld devices: PDAs, cell phones, etc. Other small consumer devices too: set top boxes, gaming devices, etc.Now: Embedded = Java ME and Java SE Targeted at larger devices (~32MB or more) POS terminals, ATMs, medical/laboratory devices, transportation devices, building automation devices, industrial automation devices, etc. 13
  • 14. “Traditional” Java Embedded Marketplace Traditionally Java is Embedded here:Java Card Java ME(CLDC) Java ME(CDC) Java SE Java EE 14
  • 15. Oracle Java Platforms Servers Desktops TV Mobile Cards Embedded Java EE BD-J APIs Java SE Java TV Java ME Java Card VMs Server Client TV Mobile Card Java Language15 15 ©2010 Oracle Corporation
  • 16. Current Deployment Landscape 16 16
  • 17. Java in Embedded –Java SE Embedded 17
  • 18. What does “Embedded” mean?• Two definitions used: Legal and Technical• Legal definition of Embedded SE: Designates a Field Of Use (FOU) – Embedded FOU defined in the license file as anything that is not a “general purpose desktop computer or server” • e.g : “industrial control systems, wireless mobile telephones, wireless handheld devices, kiosks, TV/STB, Blu-ray Disc devices, ATMs etc...” – Applies to both embedded (footprint-reduced) SE implementations and “regular” SE implementations – Royalty bearing, affordable pricing • Dedicated, flexible, versatile pricing model applies: based on unit cost and volume. 18
  • 19. Java SE Embedded Only Implementation Embedded Only Features: − Memory reductions/optimizations − Disk/Flash/ROM size reductions  Headless Configuration  Removal of optional files and Java classes − Low Power Handling − Additional Platforms (Linux/ARM, Linux/Power, WinXP Embedded)And of course all the good stuff Java SE brings out of thebox and via third party libraries/apps … (like Java EE ...) 19
  • 20. Targeted Configurations (Today)Processor Operating Headless or FPU Java SE System Headful VersionARMv5 Linux Headless Soft-Float 6U21ARMv6/v7 Linux Headless & Hard-Float 6U21 Headfull (v7)PowerPC Linux Headless Classic Hard- 6U21e600 core FloatPowerPC Linux Headless Embedded 6U21e500v2 core Hard-Float 20
  • 21. Java in Embedded –Tech Stuff 21
  • 22. Small Footprint for EmbeddedThe standard release’s ROM/disk footprintis too big for many embedded devices − Memory getting cheaper, but cost remains a factor: Profit = Margin x Volume Small footprint optimizations − Additional Compression, File Removal − Footprint reduction of up to 56%  e.g 6.0 for ARM around 32 MB  e.g., for 5.0 on Linux/x86: from 68MB to 29.5MB 22
  • 23. Java SE – Custom Embedded Builds • Technical definition of embedded SE: Custom – footprint-reduced – but still SE compatible SE specification “Regular” SEimplementation Embedded SEimplementation optional NOT an SE componentsimplementation 23
  • 24. Small Footprint for EmbeddedFile removal includes Deployment: Java Web Start, Plug-in, Pack2000and Unpack2000 IDL and RMI: rmiregistery, rmid, servertool,tnameserv Security: Policytool, keytool, ktab, klist, kinit Orbd Man pages Localization − Character convertors (charsets.jar) Remove either Client Compiler or Server Compiler 24
  • 25. Headless Feature for SE Embedded Headless option − No support for keyboard, mouse, video − Otherwise full SE functionality, including printing Runtime and build implementation − Headless flag hard-wired on  Djava.awt.headless=true − “Headful” files removed, including libmawt.so 25
  • 26. Tuning your Embedded Java Solution  Default configuration  Improving Startup Time  Taking Advantage of Multi-core processors  Picking the Right Garbage Collector Throughput/Response Time Disk/Flash Consumption Memory ConsumptionClock Speed, Number of CPUs Heap Size ? JIT Strategy Startup Time Garbage Collection Policy 26
  • 27. Low Memory SupportThe Linux community has been searching for solutions to handle lowmemory conditions Killing processes is NOT the answer (SIGABORT, ouch!) We chose to support /dev/mem_notify − Linux kernel driver monitoring available memory Create Block Waiting /dev/me YES Open for Input m_notif Monitoring /dev/mem y avail? Thread notify from Device NO Full GC Feature Unavailable *Release Additional VM Memory (JIT Buffers, etc) 27
  • 28. Java SE Embedded Feature Power Conservation• Goal – Reduce CPU usage to 0% when Java applications are idle in order to allow CPU clock to be reduced or suspended• Modifications Performed – Hotspot Virtual Machine • Eliminated all Polling Threads – Java SE AWT/Swing Changes • Eliminated Polling for X Events when idle 28 28
  • 29. Java SE Embedded Design Focus• Assumptions leading to our default configuration of SE Embedded – Most embedded devices are resource constrained – Keeping per unit device cost low is high priority – Use lower clocked processors Option Java SE Embedded Default State Performance Monitoring Off by Default Compression of JAR Files All Jar File Compressed All JRE Files Included Optional Files Removed 29
  • 30. Improving Startup Time Class Data Sharing (If classloading is bottleneck) − Enabling Class Data Sharing − Customizing Class Data Sharing Archive − Can improve Startup by 25%-30% Uncompressing jar files (If disk space is available) − Gain is dependent on disk access and CPU clock speed Lower Compilation Threshold (If MP device) -XX:CompilationThreshold=xxxx (default is 1500)Deferring Initialization or Class Loading in yourapplication 30
  • 31. Enabling and Configuring Class Data Sharing Enabling CDS with default classlist − java –Xshare:dump − Once complete, CDS is automatically enabled Use java –Xshare:on OR –Xshare:off to compare startup times. The default classlist is for GUI Swing Based Apps 31
  • 32. Customizing Class Data Sharing for Embedded Java Applications1. Create a list of classes loaded at the startup of your application java –Xshare:off –XX:+TraceClassLoadingPreorder {your app} >my_class_list *exit your app soon after startup2. Extract only bootclass loaded classes. Outputs classlist.linux. java MakeClassList my_class_list >new_classlist3. Add checksum to end of new_classlist java AddJsum new_classlist classlist4. Copy classlist to {JRE}/lib directory5. Create classes.jsa file java –Xshare:dump – You now have a customized classes.jsa file!Tools referenced on this page can be found in openjdk sources here: jdk/make/tools/src/build/tools 32
  • 33. Taking Advantage of Multi-Core Processors with Java Built in VM Features that take advantage of SMP − Parallel Garbage Collection − Concurrent Garbage Collection − Background JIT Compilation  Lower Compilation Threshold Parallelize your Java Application Code 33
  • 34. Which Garbage Collector Should I Use? Java SE Embedded Contains all of the standard collectorsCollector Option Pro Con MPSerial -XX:+UseSerialGC Best Choice for single N (default) CPUConcurrent -XX:+UseConcMarkSweepGC Better if response time is Uses processor resources Y -XX:+CMSIncrementalMode highest priority while embedded app is Shorter GC pauses runningParallel (Young) -XX:+UseParallelGC Better if throughput is GC must still pause Y highest priority. embedded app duringParallel (Old) -XX:+UseParallelOldGCdetails on GC tuning options see: For more Uses multiple processors collections. to speed up GC collection http://www.oracle.com/technetwork/java/javase/gc-tuning-6-140523.html 34
  • 35. Reducing System Resource Requirements (Reducing Memory Consumption) Customizing Heap Sizes -Xms -Xmx Adjust Free Ratios -XX:MaxHeapFreeRatio=xx (control heap reduction, default 70) -XX:MinHeapFreeRatio=xx (controls heap expansion, default 40) Reducing JIT CodeBuffer -XX:ReservedCodeCacheSize=xxMStandard Java SE tools can be used to identify potential memory savings − Use jvisualvm with Linux x86 JDK  Heapdump option 35
  • 36. Java in Embedded –Market Stuff 36
  • 37. SE for Embedded Product Overview Two groups of product offerings• For Desktops/Servers AND Embedded – Standard Releases and Platforms: x86, x64, Sparc® (32 and 64 bit) Linux, Windows, Solaris –On the web, regular updates• For Embedded ONLY – Additional platforms: ARM, PowerPC, XP-Embedded – Additional features: Headless/Small Footprint, Memory Optimizations, Low Memory Handling, Power Savings – On the web, transitioning to regular updates• Wide range of platforms supported (30+ ISA/OS sets)• Development is free • Deployment requires commercial licensing 37
  • 38. Target Market Data – SE for EmbeddedData Highlights from Surveys (till 12/10) % Evals Java SE- % Evals Java SE-Embedded Embedded by Org by Geo EME Co A mp any AME RIndustry Sampling: Educational Sampling:•Motorola Stanford University•Lockheed Martin Carnegie Mellon University•Ricoh John Hopkins University•Cisco Rochester Institute of Technology•Alcatel-Lucent Pennsylvania State University 38
  • 39. Current Java SE Embedded Offerings SE 6u21 – latest release available on web Nov 1, 2010Processor Operating Headless or FPU Java SE Version System HeadfulARMv5 Linux Headless SFLT 6u21ARMv6/v7 Linux Headless & VFP 6u21 Headful (v7)PowerPC Linux Headless Classic HW FP 6u21E600 corePowerPC e500v2 Linux * All configurations dynamicallyHeadless detect and support Embedded FP 6u21 single or multi-core processors 39x86 Linux Headless X86 6u21
  • 40. Java SE for Embedded 6u21 Release•Sync most popular Java embedded platforms with latest SE release • ARM release from: 6u10 to 6u21 • X86 (Small Footprint) & PowerPC from: 5u10 to 6u21•Rich set of features and APIs of 6u21 and the hundreds of enhancements, security improvements and bug fixes now available to embedded•Allows developers to deploy on their embedded device the same Java SE version they develop with on their PC.•Integrated embedded code with SE sources •Enables staying in sync with standard SE 40
  • 41. Java SE for Embedded 6u21 Release• Expanded Multi-Core Support •Added multi-core support for ARM and PowerPC •Multi-core features of Java SE such as parallel GC, background JIT compilation are now available for growing use of multi-core systems in embedded• Additional Platform Support •Added support for PowerPC e500v2• Improved Performance/Benchmarks • SPECjvm98 improvements • ARM: 10%; PowerPC: 19%; x86: 17% • ~20% improvement in CaffeineMark on all SE-E 6u21 • ~2x the performance of Android on common benchmarks 41
  • 42. Embedded CaffeineMark Performance Improvements +29% +22% +21% 42
  • 43. specJVM98 Performance Improvements +19% +17% 43
  • 44. 2.6X 1.53X 2.15X 2.17X Beagleboard Specs TI OMAP3530 CPU Cortex-A8 256MB RAM 600Mhz* Chart is displaying relative performance differences only. Scores have been proportionately scaled to fit on chart. 44
  • 45. 2X 3.2X 2.5X Tegra-2 Specs ARM Cortex-A9 Dual-Core CPU 1GB RAM 1GHZ* Chart is displaying relative performance differences only. Scores have been proportionately scaled to fit on chart. 45
  • 46. SE Embedded Future•Track SE releases closely • SE 7 Highlights • JSR 292 –InvokeDynamic, Project Coin (small language changes) • SE 8 Highlights • End-2012, Project Lambda – Closures, Modularity• Performance, startup and size reduction always top priority •C2 for ARM• Bundled solutions for specific markets e.g.- • Berkeley DataBase, Sync Agent, Mobile Client 46
  • 47. Java Embedded – ME & SE CDC HI 1.1.2/ Item SE Embedded CDC HI 1.6CDC Spec compliance Available with proven deployment Technically possible, roadmap not definedMIPS support Available with proven deploymentSpecial Embedded FeaturesRomization, AOT, Dual Stack, MVM, headless, memory optimizations, designed/implemented to be memory efficient multiple GC collectors, in process MVM.Available Upper Stack PBP/AGUI, MIDP/MSA, OSGi, JavaTV, GEM All SE packagesStatic Foot Print (headless) 4MB/7.5MB 32MBRuntime requirement Typically 8MB to 64MB headless:32MB headful: 64MB to 128MBStartup Time Cold <300ms, Warm <100-200ms SlowerOS Portability Linux, WinCE, Brew, Symbian, pSOS, VxWorks, Linux, XP Embedded, Linux GC, OS20, Win32, Solaris, Mac OS X Windows, Solaris, NetBSD, QNXCPU Portability (w/JIT) ARM, MIPS, X86, PowerPC, Sparc, MIPS, AM34, ARM, x86, PowerPC, Sparc ST20, SH3/4, ARCGraphics portability DirectFB, DirectX, MPE, PFC, MicroWindows, QT, X11, Windows etcLatest language and API Subset of 1.4.2/ SE 1.6 Subset of 1.6 (planned) 10/26/10 Oracle Internal and Restricted 47 47
  • 48. API Package Embedded SE 1.6/1.7 CDC/FP 1.1.2 CDC/FP 1.6 SE java.applet Yes no no java.awt Yes no no java.beans Yes no no java.io Yes Subset Yes java.lang Yes Subset Yes java.math Yes Subset Yes java.net Yes Yes Yes java.nio Yes no Yes java.rmi Yes no no java.security Yes Subset Yes java.sql Yes no no java.text Yes Yes Yes java.util Yes Subset Yes java.util.concurrent Yes no Yes java.util.logging Yes no Subset java.util.pref Yes no no java.crypto Yes Yes Yes javax.security Yes Subset Subset Javax.* (~70 other packages) Yes no no org.* Yes no no omg.org.* Yes no no Static footprint (with SecOP) 32 MB 4 MB 7.5 MB10/26/10 Oracle Internal and Restricted 48 48
  • 49. Another Quiz!What famous CEO played in Iron Man 2 (and looks like Robert Downey Jr.)? B C A 49
  • 50. Java SE EmbeddedExamples in the Field 50
  • 51. Java SE for Embedded Example devices • Routers & Switches • Smart Meters • ATMs • Storage Appliances • RFID Readers • Video Conferencing • Parking Meters • Network Management Systems Systems • POS Systems • Medical Imaging Systems • In-Flight Entertainment• Lottery/Gaming Systems • Radar Systems Systems • Multi Function Printers • Industrial PCs • Video Streaming Systems• Intelligent Power Module • Factory Automation Systems • Electronic Voting Systems • Netbooks • Voice Messaging Systems • Geo-Imaging Devices • Security Systems 51
  • 52. Java SE Embedded in Smart Metering EnergyICT Java SE Embedded Based Smart Meter Concentrator 52
  • 53. Special Bonus!Tips for getting startedwith Java Se Embedded 53
  • 54. Getting Started• Purchase Embedded Device • Many low cost ARM single and multi-core devices • Single Core ARM Cortex-A8 devices • SheevaPlug ($99) http://www.plugcomputer.org • BeagleBoard ($149) http://beagleboard.org • Multi-Core ARM Cortex-A9 devices • PandaBoard ($174) http://pandaboard.org • Nvidia Tegra 250 Developer Kit ($399) http://developer.nvidia.com/tegra/tegra-devkit-features• You’ll need USB Keyboard, Mouse and HDMI Video monitor• Download / Install / Setup Linux Distribution • Some vendors provide pre-installed ready-to-go Linux distros. Special Computing does this for Beagleboard and Pandaboard http://specialcomp.com• Download and un-tar Java SE Embedded • http://oracle.com/technetwork/java/embedded 54
  • 55. Sample Embedded ARM Devices Beagleboard Plug computer Pandaboardhttp://beagleboard.org http://www.plugcomputer.org http://pandaboard.org Beagleboard Specs Pandaboard Specs Plug Computer Specs TI OMAP3530 CPU TI OMAP4430 CPU Marvell ARMv5 CPU Cortex-A8 Dual Core Cortex-A9 512MB RAM 256MB RAM 1GB RAM 1.2ghz 600Mhz 1Ghz 55
  • 56. Java SE Embedded Platform Example GuruPlug Low Power ARM/Linux based device design by Maxwell 512 MB RAM, 512 MB Flash, USB & Gigabit Ethernet Approx $100-120 for single devices Flexible and Capable Runs Java SE Arm v5/Linux headless Low Power Java Web Server: http://www.theregister.co.uk/2010/11/11/diy_zero_energy_home_server/ 56
  • 57. Wrapping up 57
  • 58. Java: Features• Proven & Stable• Huge Developer Base• Rapid Application Development• Fully Object Oriented• Runs on a Virtual Machine• Multi-Thread, -Process and -CPU/Core support• Security• Networking 58
  • 59. Embedded Systems Conference• May, 2011, San Jose• Embedded Java Hands On Lab • Expect 30+ attendees • GuruPlug + USB temperature sensor (one per attendee) • Verrazano Development Environment • 90 minutes • Students will download Embedded SE BDB, and sync agent, install them on GuruPlug • 3 exercises • Hello World • Periodically reading a temperature sensor • Save temp values into local BDB see them on Oracle DB on instructors laptop 59
  • 60. • Resources Oracle Embedded Java Products • oracle.com/us/technologies/embedded/embeddable-java-185427.html• Embedded Java Overview • oracle.com/technetwork/java/embedded/overview/index.html• Java ME Home • oracle.com/technetwork/java/javame/overview/index.html• Blogs and News • blogs.oracle.com/java • terrencebarr.wordpress.com• The Java Spotlight Podcast • thejavaspotlight.org• Follow @Java on Twitter 60
  • 61. Questions? <Insert Picture Here> For more information on Java Embedded: www.oracle.com/technetwork/java/embedded Or write me at:Ben Pashkoff (benjamin.pashkoff@oracle.com) 61
  • 62. Which of the following do YOU think of when you think of Java? A C B D G E F 62
  • 63. 63
  • 64. <Insert Picture Here>Appendix 64
  • 65. Java Everywhere 65
  • 66. The Spectrum of Java Servers Desktop Embedded TV Mobile Card BD-JJava EE JavaFX Java TV MSA Java SE Java ME Java Card Java Language 66
  • 67. Section Divider 67