Robert Casto Software Developer and Performance Engineer

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

• · 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

Information

• · Java EE, BPEL, SOA: XMLPATTERN and generated XML indexes
  By Łukasz
  From the tests I have conducted, XML index on pesel element added ~15% performance gain. Not something extraordinary, but it proves that XML indexes work Summary That’s not all on IBM DB2 pureXML. …

• · analysis 102: A good design is mandatory if you want good performance.
  By mx
  “The First Rule of Program Optimization: Don’t do it. The Second Rule of Program Optimization (for experts only!): Don’t do it yet.” Michael A. Jackson I think the problem stems from a question of value. Developers still see code that runs … This code takes less then 1 ms to execute (printed difference is ZERO)… on my fairly powerful laptop with Java 6. If I up the array size to 1000, it takes 31 ms… I had to up the array size to 1000 to up the time taken to 31 ms. …

• · InfoQ: Google Calls for a Joint Effort to Speed Up the Internet
  By Abel Avram
  Google shares research data, web site speed optimization tutorials, recorded presentations, links to lots of performance optimization tools, and a discussion group inviting everyone to share ideas on how to make the web faster. …

• · The Geek Head: Important but Ignored performance tips for Tomcat.
  By Geek Head
  The above mentioned options are used to define size of java heap try to set as low as possible because setting too high wastes memory and can cause long garbage collection pauses -XX:MYSize -XX:MyRatio. Set to 25% to 33% of total java …

• · Google wants to make the Web fasterNetwork Performance Blog …
  By speeding up the Web, Google is pushing for faster adoption of new standards, such as HTML 5, designed to bring multimedia applications away from plug-ins such as Flash, Silverlight, and Java, and towards putting it into the interpreted …

Tools

• · Startup Boosts App Speed With Virtualized Server Memory
  InformationWeek – Manhasset,NY,USA
  RNAcache seeks to improve application performance by making a continuous file, frequently used software objects, large blocks of data or other large data …

• · 20 Linux System Monitoring Tools Every SysAdmin Should Know
  By Vivek Gite
  Top 20 Linux Server Performance Monitoring Tools To Solve Server Bottlenecks Issues related to CPU, Memory, Disk, and networking subsystems. …

How To

• · Learn How to Exploit Multiple Cores for Better Performance and …
  By Todd Hoff
  Learn How to Exploit Multiple Cores for Better Performance and Scalability (93). InfoQueue has this excellent talk by Brian Goetz on the new features being added to Java SE 7 that will allow programmers to fully exploit our massively …

Posted under Performance, Week in Review

Information

• Google Page Speed – Firefox plugin for improving website performance – Tool that uses cache optimization, gzip, and minimizes request times. Can show network activity of webpages.
• Acquiring JVM Runtime Information – Descriptions of tools to get data from running Java processes. jps, jinfo, JConsole, and VisualVM)
• Dealing with multi-partition transactions in a distributed KV solution – Very interested discussion about performance ofl All0partition transactions.
• Java being ported to Qualcomm’s Snapdragon ARM processor – Market will have yet another hardware platform running Java.

Tools

• NEOTYS Announced NeoLoad 3.0 for Stress and Load Testing of Web Applications – Update of tool that can load test web applications including GWT (Google Web Toolkit)
• Total Network Monitor 1.0.1 Released – Network monitoring tool from Softinventive Lab.
• Page Speed Introduced by Google – Firefox Add-on integrated with Firebug that tells you want can be done to improve a download and display for a web page.

How To

• SharePoint Performance, Stress or Load Testing – Discussion about performance testing a SharePoint service. Describes tools and metrics that are helpful.
• Monitoring Performance – Discusses what to monitor in a Windows environment.
• How to install MySQL Monitoring Tools mtop for CenOS Debian – Instructions on how to get the monitoring tool ‘mtop’ installed for MySQL on CentOS Debian.
• JETM – The easy way to monitor your Spring Application – Instructions on how to use JETM to monitor Spring.
• Building Scalable, Complex Apps on App Engine – Session Video by Brett Slatkin that discusses data structures, techniques, and other issues and how to make them scale on the Goggle App Engine.
• Improving page download perception by moving JavaScript to the end – Small article with PHP code that describes how to increase page load perception.
• Unofficial Guide to QuiteTest Professional 10 – Site devoted to helping users with QTP.

Why Performance Test

• Making a case for application performance management by Ann Bednarz – Discusses an Aberdeen Group report about issues with application performance.

Free!

• Eclipse Web Tools Platform: Developing Java Web Applications – Discusses the Test and Performance Tools Platform (TPTP).

Posted under Performance, Week in Review