Robert Casto Software Developer and Performance Engineer

How To

• Java Tips: Optimizing your Map loop | satukubik
  By Nanda Firdausi
  From my tests, I observe that the performance of the first template depends on the backing object. If we are using HashMap, the performance is less or more the same as the second template. If we are using Hashtable, the performance of …

Java

• Java Standard Edition 6 Performance
  Java SE 6 Performance White Paper Javaâ„¢ Platform Performance Engineering Sun … and Performance Enhancements 2.1 Runtime Performance Improvements 2.11 …
• Java SE 6 Update 15
  Security and garbage collection update.
• Java SE 6 Update 16
  Security update.

Posted under Java Virtual Machine, Performance, Sun, Week in Review

Information

• · Performance considerations while working with Strings and …
  By vogella
  Strings are very frequently used in Java programs. This blog post tries to explain what a programmer needs to consider from a performance point of view. It will also explain in what situations you should use StringBuilder instead of …

Tool

• · Groovy’s SQL Switch: A Powerful Tool In The Quest For A Truly Real …
  By Jason Kincaid
  … of the processing costs for the competing technologies below). The new software runs on special Intel boxes, with performance that the company says matches 100 standard SQL servers. For more, you can check out the full product spec sheet here. … Did they have to give it the same name as one of the main dynamic languages for Java? reply · Dan Grossman (@w3roi) – July 23rd, 2009 at 3:19 am PDT. Good to see they’re still going after almost having their code stolen. …

• · Borland Adapts Silk Test Suite For Agile Development
  InformationWeek – Manhasset,NY,USA
  By Charles Babcock Borland has adapted its Silk line of software testing tools to better accommodate modern development methods, particularly Agile-style …

Posted under Performance, Week in Review

Information

• · java.net: Kirk Pepperdine Interviewed by Janice Heiss
  Janice Heiss interviews Java Champion Kirk Pepperdine about Java performance tuning and more in this java.net Community Corner 2009 podcast, recorded at JavaOne.
• · The Disco Blog » Blog Archive » To recurse or not: Euler challenge #2
  By Andy
  While I implemented problem #1 in Groovy, I thought it would be interesting to solve problem #2 in both Java and Groovy as I wanted to get a good feel for the performance differences between solving Fibonacci via recursion and iteration …
• Architect’s Blog
  By Guy Nirpaz
  New proxy implementation now supports faster fetch times, so that reading objects by their id from local cache is almost as fast as accessing a java.util.ConcurrentHashMap (in Java) or a Dictionary (in .NET). Raw performance of …
• PHP’s Scalability and Performance comparison over Java – Digg model
  By Jiltin
  In addition, many versions of PHP was used in the test, and substantial performance improvements have been made since and are continuing to be made. Here is the article from oreillynet: PHP scales! The word on the street is that “Java …
• Why is Performance Monitoring so hard? – brettdargan.com
  By admin
  Current State – Instantaneous State based; Alerting; Historical Stats; Trace (System > Component > Request) ~ Vertical Profiling through technologies; Profiling – usually technology focused, like Java Profiling; Vital Signs … Production – Under Load Times (batch or interactive); Production – Under Load and component Failures; Dev – Design/Architecture; Dev – Impl time; Test – Environment Issues – ala. Troubleshooting the Integration; Load Test Time; Soak Test Time …
• Amazon Web Services Developer Community Performance Monitoring for …
  Performance Monitoring for Autoscaling. Posted Aug 8 2008 943 AM PDT … As a Java developer I think of JMX which is baked into Java 5 and can be leveraged …

Book

• · AVIRADS-urs always: Java Performance Tuning 2nd edition – Jack Shirazi
  By avirads
  Method profiling can be done by java -Xrunhprof:cpu=samples,thread=y <classname> jhat included in JDK is Java Heap Analysis Tool. The JDK provides two methods for monitoring the amount of memory used by the runtime system. …

Product

• · GigaSpaces’ XAP 7 focuses on performance
  SDTimes.com – San Bruno,CA,USA
  XAP allows Java applications to be provisioned into distributed environments without requiring code changes or separate components for clustering, …

Posted under Performance, Week in Review

Information

• · Glassfish Terracotta Performance?
  By msnuser168
  Then I found the reason is when The threads in SOAP UI exceeed 256. Then some request will fail with “java.net.SocketException:Connection reset”. I am wondering how to configue SUN web server 7 to get better throughput. …. Subject: Re: Glassfish Terracotta Performance? [Up]. ari ophanim. Joined: 05/24/2006 14:23:21. Messages: 629. Location: San Francisco, CA Offline, Not sure I understand this at all. Sorry, but can you explain more about your test and environment? …

• · Java Logger Memory Leaks
  By Aviad
  Code, Performance Add comments. Recently we switched from Log4J to the java.util.logger package (for this entry it will be called the “Java Logger”). Why, you might wonder, and I don’t have a good reason to give other than the illusion …

• · OVERHEAD: Java Application Scalability « Welcome to the Real (IT …
  By Max J. Pucher
  HTTP requests are load-balanced across stateless servers and routed to designated J2EE server for processing. Such Java applications exhibit intratier communication complexity that directly impairs scalable performance. …

• · Java Buzz Forum Java Performance News June 2009
  We list all the latest Java performance related news and articlesIf the comparison is consistent things are due to start picking up again in the first half …

• · What should I look for when improving performance in Java Stack …
  The Java compilers are also pretty good at sniffing for performance improvements probably better than any single human So while there are some obvious …

• · javanet Kirk Pepperdine on Java Performance Tuning
  Kirk Pepperdine talks about Java performance tuning in this java.net Community Corner 2009 podcast, recorded at JavaOne.

• · Introduction to Java Concurrency « Pure Java Performance
  Presented by David Moskowitz to the Sarasota Java Users Group on June 11 2009 … In addition performance improvements are much easier to add to a logically …

• · Java Performance blog: Eclipse Memory Analyzer, 10 useful tips …
  By Markus Kohler
  Java Performance blog. This is my blog about Java performance related topics. Thursday, July 09, 2009. Eclipse Memory Analyzer, 10 useful tips/articles. The Eclipse Memory Analyzer has been shipped with Eclipse 3.5 Galileo and I planned …

• · Editor’s Daily Blog Community Corner Podcast Kirk Pepperdine on …
  In Java Today In Kirk Pepperdine on Java Performance Tuning Kirk Pepperdine talks about Java performance tuning in this

How To

• · Generating Dump Java Data Files
  Watching the Watchers.org – USA
  by panoskrt Recently I have been running some disk I/O benchmarks, among others, with Java. I needed to check I/O operations performance with plain data …

Blog

• · Giju George’s Blog: Performance Monitoring using JMeter
  By gijugeorge
  Apache JMeter is an open source tool that can be used to measure the performance of Java applications. The JMeter can be used to test a wide range of Java applications like web, EJB, web services etc. I am not going to elaborate more on …
  Giju George’s Blog – http://weblogs.java.net/blog/gijugeorge/

Book

• · SQL Server 2008 Query Performance Tuning Distilled | Porwin Ebook …
• By Admin
• Read query execution plans and identify bottlenecks in performance. * Record system performance metrics for trend analysis. * Learn to design databases and write Transact–SQL code to avoid common problems. …

Posted under Java Virtual Machine, Technology, Week in Review