<Insert Picture Here> Overview: Oracle JRockit Real Time & JRockit Mission Control

Transcription

1 <Insert Picture Here> Overview: Oracle JRockit Real Time & JRockit Mission Control Mark Prichard & Erik Bergenholtz Java Products Group

2 The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle s products remains at the sole discretion of Oracle Oracle Corporation Proprietary and Confidential

3 Agenda Product Overview JRockit Real Time JRockit Mission Control Overview Demo Console Memory Leak analyzer JRockit Virtual Edition JRockit Flight Recorder Demo JRockit Flight Recorder WLDF (WebLogic Diagnostics Framework) BEA Confidential. 3

4 Oracle Application Grid Appliance Custom App Packaged App SOA Service C /C++ / Cobol Legacy Application Grid WebLogic Server Coherence Virtual JRockit / Hotspot Tuxedo Physical Enterprise Manager Efficiency Lowest operational costs Competitiveness Outperform with speed and flexibility Simplification Best foundation for entire software stack

5 JRockit Basic Facts Complete implementation of Java 100% compatible with the Sun Java SE implementation Underpins Oracle Fusion Middleware product stack Optimized stack Architeched and optimized for server-side Java High Performance Zero downtime tooling (value-add through Mission Control) Real-time GC (through JRockit Real Time)

6 JRockit Main Features No byte-code interpreter All methods are compiled Advanced JIT compiler Hot methods are optimized and inlined Concurrent and parallel garbage collection Both generational and single-spaced Garbage collection of code and classes Real-time garbage collection

7 Agenda Product Overview JRockit Real Time JRockit Mission Control Overview Demo Console Memory Leak analyzer JRockit Virtual Edition JRockit Flight Recorder Demo JRockit Flight Recorder WLDF (WebLogic Diagnostics Framework) BEA Confidential. 7

8 Oracle JRockit Real Time Use Case -Extreme low latency and predictability for Java applications Time Critical Benefits Guaranteed maximum response times Single-digit ms GC pause times definition Enhanced Mission Control Eclipse-based Integration Deterministic QoS under heavy load No code re-writes At first, we doubted BEA's performance claims for JRRT After all, if it were possible to lose the garbage-collection latency, wouldn't Sun have done it already? After testing JRRT in several scenarios, we concluded Oracle's solution works. -Network Computing

9 Typical Pain Points We have problems with long GC pauses in our Java application We are going to build an application which requires millisecond response times, and want to do it in Java We have a response time SLA to our customers. If we don t meet it, we have to pay fines. We would like to migrate our C application to Java, but we are concerned about Garbage Collection pauses. Every millisecond delay means we lose money due to losing deals or increase arbitrage costs. BEA Confidential. 9

10 Standard JVM Unpredictable Response Times due to GC Application startup

11 JRockit Real Time in Action Avoid Latency Spikes with Deterministic GC Application startup

12 Throughput and Latency Tradeoffs Parallel GC Optimized to increase throughput Java application threads Concurrent GC Optimized to reduce pause time Garbage Collector threads (1 per processor) Java application threads Garbage Collector thread Concurrent GC consumes additional resources

13 WLRT Deterministic GC Provides QoS guarantees Usage: -Xgcprio:deterministic XpauseTarget=10ms Highly tuned mostly concurrent mark-n-sweep GC Most work done concurrently, pauses are frequent but very short Back off, split work and reschedule if nearing QoS limit (divide and conquer) One GC cycle (phases 0-2, 2-4, 4-5, 5 visible) 500 ms 20 s

14 JRockit Mission Control Monitor health & performance in production Visualize application & JVM events per thread Nanosecond granularity (subject to OS limitations) Identify and remedy latency issues

15 Mission Control Architecture Mission Control GUI Mission Control Server Deploy Standard APIs (JMX, XML) Built into JRockit java Xmanagement:port=7091 Hello Console (jrcmd)

16 Agenda Product Overview JRockit Real Time JRockit Mission Control Overview Demo Console Memory Leak analyzer JRockit Virtual Edition JRockit Flight Recorder Demo JRockit Flight Recorder WLDF (WebLogic Diagnostics Framework) BEA Confidential. 16

17 Agenda Product Overview JRockit Real Time JRockit Mission Control Overview Demo Console Memory Leak analyzer JRockit Virtual Edition JRockit Flight Recorder Demo JRockit Flight Recorder WLDF (WebLogic Diagnostics Framework) BEA Confidential. 17

18 Oracle JRockit Virtual Edition Optimized Java Infrastructure Runs natively on hypervisor More efficient use of hardware resources Higher density Better performance Reduced operational cost Simpler patching Improved security Custom Java appliances Building blocks for larger assemblies Simple deployment Traditional Optimized Virtualized Java Java Execution Stack WebLogic Server with JRockit WebLogic Virtual Server Edition Java Virtual Machine Guest JRockit Operating Virtual Edition System Hypervisor Oracle VM Bare Metal Hardware

19 JRockit Virtual Edition How does it work? JRockit VE OS Layer TCP/IP File System Scheduler H/W WebLogic Server with JRockit Virtual Edition WebLogic Server JRockit VE Oracle VM Bare Metal Hardware f TCP/IP: Network communication Scheduler: Runs Java threads. Single process File System: Local [virtual] disk HW: Hardware device interaction. Network card, virtual screen, etc.

20 WebLogic Server with JRockit Virtual Edition Standard WebLogic Server Running on JRockit VE Simplified and efficient virtualized Java EE Administration and management is virtualization aware Increased performance and density Virtualized Java EE applications run faster and with more instances on the same hardware Virtualized Managed Server WebLogic Cluster Virtualized Managed Server Virtualized Managed Server JRockit VE JRockit VE JRockit VE Hypervisor Virtualized Resource Pool

21 Simplified: JRockit Virtual Edition (Approximate Numbers) Linux JeOS JRockit Virtual Edition Config. Files Commands Command Params. 50,000 10, Admin Tools Boot Time (s) Size (MB) Reduction Ratio from Linux 1 ~2 ~300

22 Performance: JRockit Virtual Edition Performance Issue Standard JVM / OS WebLogic on JRockit Virtual Edition Java Aware Scheduling? No Yes Kernel Mode Transitions? Many Very few Shorter Switching Times? No Yes Optimize size of Heap No Yes Shorter I/O Path? No Yes

23 Virtualized Performance: WebLogic Server on JRockit Virtual Edition Configuration WebLogic Server on Physical OS WebLogic Server on JRockit Virtual Edition WebLogic Server on Guest OS WebLogic Server GA GA GA Clock Speed 2.8 GHz 2.8 GHz 2.8 GHz 33% increased Memory 24GB 4GB 6GB performance over Memory Speed (MHz) a guest OS Operating System OEL5.4 OVM/JRVE OVM/OEL5.4 PV JRockit R R R Heap (GB) Operations / Sec

24 Agenda Product Overview JRockit Real Time JRockit Mission Control Overview Demo Console Memory Leak analyzer JRockit Virtual Edition JRockit Flight Recorder & WLDF Demo JRockit Flight Recorder WLDF (WebLogic Diagnostics Framework) BEA Confidential. 24

25 What is the JRockit Flight Recorder New in JRockit R28 Circular buffer in JRockit JVM that stores diagnostic data Always on New data comes in and is stored, old data dropped off Built-in integration with JRMC Replaces JRMC Runtime Analyzer and Latency Analyzer Very low/near zero overhead Uses data already used by JVM Data can include events from the JVM and from any other event producer WebLogic Server (WLDF) Fusion Middleware (DMS) New Data Time Flight Recording Old Data

26 JRockit Flight Recorder Use Cases What it is designed for? Provide diagnostic information in running production systems Capture most recent activity to enable analysis leading up to an issue Capture data from all levels JVM, WLS, DMS, etc Offline/offsite analysis can be done using the JRMC GUI JRockit dumps capture information to assist in crash-analysis What it is not designed for? Large event payloads or very high volumes of events Long history Not a replacement for Debug logging or the server logging

27 WLDF/JFR Integration Overview JRockit R28 added JRockit Flight Recorder (JFR) capability Similar in concept to aircraft black box Designed for fulltime use in production systems Rolling window of most recent diagnostic event data (circular buffer) Provides overall view activity, top to bottom API allows others to produce JFR event data (WLDF, DMS, etc ) Tooling support for the customers to view/use the JFR (JRMC GUI, JRCMD) WLDF/JFR Integration Provides JFR events to highlight activity in Weblogic Server Records JFR data in WLDF Image Captures Provides enhanced WLST access to WLDF Image Captures

28 WLDF/JFR Integration Features WLDF Image capture Records all JFR data that is available from all producers WLST Helper APIs for listing and copying captured diagnostic image data WLDF JFR event production for WLS component usages WebApp, EJB, JDBC, JTA, JMS, Web Services, Connector, WLDF automatically throttles event production (non-intrusive) WLDF Diagnostic Volume control (Off, Low, Medium, High) 1 simple control (no need to configure a WLDF module) PS2 default volume is Off, default may change to Low Volume may be used in the future for more general WLDF feature coverage

29 Agenda Product Overview JRockit Real Time JRockit Mission Control Overview Demo Console Memory Leak analyzer JRockit Virtual Edition JRockit Flight Recorder Demo JRockit Flight Recorder WLDF (WebLogic Diagnostics Framework) BEA Confidential. 29

30