Java Update. Planned product releases in Sanjib Guhathakurta Product Manager, HP

Transcription

1 Java Update Planned product releases in 2007 Sanjib Guhathakurta Product Manager, HP Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice

2 NonStop Server for Java Update Currently working on NSJ 5.1 on Integrity NonStop API set same as NSJ 5.0 JDK 5.0 Upgrade to latest HP-UX HotSpot compiler Expected performance improvement in the 5-10% range Improved diagnostics with support for improved profiling and Garbage Collection information Incorporate HP-UX JVM options Xeprof and Xverbosegc into NSJ Incorporate upcoming PThreads enhancements Nowaited OSS file IO operations Expected FCS date: August 2007 NSJ 6.0, Java SE 6.0 certified JDK Released US DST tool for NSJ 4.x and NSJ 5.0 available at: February 27,

3 NSJSP Server (Tomcat) Update Currently working on NSJSP 6.0 on Integrity NonStop Based on Tomcat 6.0.x code base Implements latest Servlet and JSP spec Servlet 2.5 and JSP 2.1 spec JMX MBean support for improved manageability Performance expected to be same as that of NSJSP 5.0 Will require NSJ 5.0 and above Expected FCS date: August 2007 February 27,

4 BEA WebLogic Server Update Currently working on WLS 9.2 (latest WLS release) certification on Integrity NonStop WLS 9.2 is still a Java EE 1.4 certified app server Improved system administration and management with new Admin Console Improved availability with WLS server instance migration to another machine and HTTP session replication across WAN Updated Web Services APIs Target availability date: July 2007 February 27,

5 Java Performance on Integrity NonStop servers Frans Jongma BCS-NED Competence Center, EMEA

6 Agenda Introduction Java performance, what does this mean? What is it that you are testing? Simple Java performance comparisons: NonStop servers Does Industry Standard hardware give Industry Standard performance? Close February 27,

7 What started this February 27,

8 We accept Java to perform at 60% of C. Your Java performance is at 3%. Unhappy customer February 27,

9 Java performance: What does this mean? February 27,

10 Things coming together Java, the promise of Write Once Run Anywhere Java, the myth of needing to know only Java Developers, the need for speed Performance, the assumption that performance is a hardware problem The Internet, the availability of easy benchmarks February 27,

11 It is easy to compare Java performance between different platforms Presumption February 27,

12 What does Java mean to you? A programming language? A toolbox? A programming environment? Including workbench, test tools etc. A lifestyle? An operating environment running and scheduling multiple tasks? February 27,

13 The Java VM Operating Environment Multi-threaded environment Manages the JVM memory Creates Objects Collects garbage Runs applications Calculations Object create / delete Access database Compiles bytecode Optimizes code February 27,

14 What are you testing? Or: What gets executed? February 27,

15 What are you testing? So-called Microbenchmarks Small and easy Downloaded from Internet Examples: SciMark, HeapTest Testing the CPU speed of the platform Your typical developer laptop? 2-3 GHz S-series CPU? MHz Itanium 2? GHz February 27,

16 What are you testing? -2- C program Compile Optimize at compile time Compiler optimize levels Machine dependent code C source Compile and optimize Execute Once compiled and optimized, the code is static Executable February 27,

17 What are you testing? -3- Java source javac Java program Compile into bytecode No compiler optimize options Machine independent code JVM Class execute Execute Interpret code Compile code JIT or HotSpot compilers Profile code (n times) Optimize code (n times) February 27,

18 What gets executed? What does NOT get executed? Compiler/optimizer may eliminate dead code without you knowing it! What else gets executed? Interpreter Compiler Application code Garbage collector public static void dosomestuff() { double uselesssum = 0; } for (int i=0; i<1000; i++){ } for (int j=0;j<1000; j++) { } uselesssum += (double) i + (double) j; February 27,

19 JVM needs warming up Test may be too short SciMark runs a few seconds only Investigation included: Potential performance: Use of Xcomp option Code may be optimized but not run Manually changed code Show Warm-up phenomena JVM 1.4 Warmup February 27,

20 SciMark 2.0 Java Benchmark Scientific/engineering code Developed by National Institute of Standards (NIST) For i=1; i<loopcount; ++i { Five computation kernels Fast Fourier Transformation Jacobi Successive Over-Relaxation Monte Carlo Integration Sparse matrix multiply Dense LU matrix factorization Report the results } // end of loop February 27,

21 Warm up depends on JVM technology JVM Warming up NSJ4 NSJ5 February 27,

22 Comparing S-series vs Integrity NonStop February 27,

23 Performance ratio S versus NS-series Order entry ratio S86000 S88000 NS1000 NS14000 NS16000 February 27,

24 Performance ratio S versus NS-series Order entry ratio SciMark ratio S86000 S88000 NS1000 NS14000 NS16000 February 27,

25 Leverage the Industry Standard February 27,

26 The promise Itanium processing power Building blocks from HP Compiler technology JVM technology February 27,

27 It works! The proof Java 5 VM JRockit on Win64 rx2620 HP-UX on rx2620 NonStop OS NS JVM Performance test results based on SciMark 2.0 Intel Itanium2 1.6GHz 6MB L3 Cache Win64 JRockit 1.5 NonStop OS 1.5 HP-UX 1.5 February 27,

28 Fun Stuff: Anomalies February 27,

29 Java 4 appears faster than Java Java4 HP-UX Java5 HP-UX Java4 NonStop Java5 NonStop February 27,

30 Magic options Java4 HP-UX Java5 optimized HP- UX Java4 NonStop Java5 optimized NonStop Both: -XX:LoopOptsCount=43 HP-UX: XX:RangeCheckElimination February 27,

31 What about the warm up? JVM Warming up NSJ4 NSJ5 February 27,

32 Short tests can show skewed results S86000 S88000 NS Can S-series be faster than Integrity NonStop? February 27,

33 What is executing during warm-up? NS14000Standard -XX:-BackgroundCompilation JVM spawns a compiler thread to compile classes If workload is CPU-intensive and there is only one CPU to work with February 27,

34 What Measure can show you Do not forget everything you know because the application is written in Java Measure tells you more than you may think The following slides illustrate Weblogic Server on Integrity NonStop February 27,

35 The effect of BackgroundCompilation Effect of BackgroundCompilation on WLS startup :36:46 23:36:53 23:37:00 23:37:07 23:37:14 23:37:21 23:37:28 23:37:35 23:37:42 23:37:49 23:37:56 23:38:03 23:38:10 23:38:17 23:38:24 23:38:31 23:38:38 23:38:45 23:38:52 CPU ms per second 23:38:59 23:39:06 CPU std CPU nobg February 27,

36 Effect of File IO on CPU busy-time :36:46 23:36:53 23:37:00 23:37:07 23:37:14 23:37:21 23:37:28 23:37:35 23:37:42 23:37:49 23:37:56 23:38:03 23:38:10 23:38:17 23:38:24 23:38:31 23:38:38 23:38:45 23:38:52 23:38:59 23:39:06 CPU std File-Open-Calls February 27,

37 Cannot do much if you re waiting for IO :36:46 23:36:53 23:37:00 23:37:07 23:37:14 23:37:21 23:37:28 23:37:35 23:37:42 23:37:49 23:37:56 23:38:03 23:38:10 23:38:17 23:38:24 23:38:31 23:38:38 23:38:45 23:38:52 23:38:59 23:39:06 CPU std OSSNS-Wait-Time File-Open-Calls February 27,

38 Creating new files is expensive :36:46 23:36:53 23:37:00 23:37:07 23:37:14 23:37:21 23:37:28 23:37:35 23:37:42 23:37:49 23:37:56 23:38:03 23:38:10 23:38:17 23:38:24 23:38:31 23:38:38 23:38:45 23:38:52 23:38:59 23:39:06 CPU std OSSNS-Wait-Time File-Open-Calls OSSNS-DD-Calls February 27,

39 Closing remarks February 27,

40 Your mileage may vary. This customer s test now runs at 90% of C Real applications require real tests There is a whole world outside the VM JDBC SQL Compilations The I/O subsytem The TCP/IP stack February 27,

41 Summary Java on Integrity NonStop simply screams a very excited NonStop Java developer in 2006 Performance of NSJ is on par with the JVMs from HP and BEA running on the same chipset Power of Itanium processor is reflected more in CPU-Intensive (Java) processing than in simple OLTP The Integrity NonStop server is the choice for Java February 27,

42 References The Sun HotSpot compiler ex.html Micro benchmarks SciMark benchmark The writeup KB 3216 A Java Micro benchmark on HP NonStop and other servers. July February 27,

43 February 27,