Jboss Performance Tuning Basics 1

Tuning Jboss for performance. Some of the basics will be covered in this Part and Part 2 will go more in depth. Update Java If its a new install or an existing application update java to take advantage of any bug fixes and performance improvements that have been made. Heap Its generally best practice to set -Xmx and -Xms (the heap) the same. Giving them a ton of memory isn't always the best thing because it could/will increases stop the world GC pauses. Make sure you leave enough memory Read more [...]

Inexpensive Linux laptop

Was browsing Ebay and noticed you can get a Dell Latitude D630 for $100 to $160.  The Dell Latitude D630 is great for linux and might be a good inexpensive Linux laptop option for you. When buying a used laptop I look at CPU speed, battery capacity and that the screen is in good condition. I would buy from a seller that has measured the battery capacity.  Ram is inexpensive for the older laptops but if it has 2+GB of memory I probably wouldn't upgrade. I usually plan on putting a new Hard Read more [...]

The 4 Hour Workweek Review

Today's review is on The 4-Hour Workweek by Timothy Ferriss.   This book is a great read and one of my favorite business books. I don't think many people will be able to cut down to a four hour work week but I like the outside of the box thinking in the book. Many of the recommendations in the book are solid. I'm a big fan of the Pareto principle (80-20 rule) and glade this book showed the importance of it. I was very impressed that a section was dedicated to split testing web Read more [...]

Setting time without ntp access

Testing some hardware at a lab I ran into a time sync issue. The servers  didn't have outbound access to ntp (port 123 tcp or udp) but the servers had full outbound access to the web (port 80 and 443 tcp). Only having access to the servers for a week I didn't want to waste much time on setting up time. This is the hack I came up with. I created a script called set_time.sh and added it to roots cron so it would run every 15min. This kept time in sync enough for my testing. #!/bin/bash date Read more [...]

Phoronix Test Suite

When doing some recent hardware benchmarking with Phoronix on CentOS 6 I found that the Phoronix-test-suite RPM from the epel repo was missing some dependencies. Patch was the main dependence missing but I also installed a couple others. This is the yum install command I ended up using on severs with the minimal CentOS 6.3 install. sudo yum install patch phoronix-test-suite pcre pcre-static pcre-devel mingw32-pcre opensips-regex ghc-pcre-light ghc-pcre-light-devel Once the install Read more [...]


I just finished reading CA$HVERTISING by Drew Eric Whitman. CA$HVERTISING: How to Use More than 100 Secrets of Ad-Agency Psychology to Make Big Money Selling Anything to Anyone I found it to be a good read and highly recommend it to anyone wanting to learn more about marketing or needing a refresher from a college marketing class. The book was clear about the concepts and provided plenty of examples.  I liked how it was to the point and informative.  I wish this was the book Read more [...]

Automatic CentOS 6 Installation DVD With Kickstart

Automatic custom CentOS 6 Installation DVD With Kickstart This is how to add and remove packages from a Centos or like iso and create a automated install image. This should work with any rpm distro that uses anaconda as its installer. Anaconda/UX that ships with Fedora 18 and newer may have some differences. You will need the install images and a workstation running a rpm anaconda based distro. I used Fedora 17 as my workstation and the Centos 6.3 dvd images. The DVD images can be found at Read more [...]

Fedora 18 Mate Install

Notes from my Fedora 18 Mate install. This isn't a step by step guide. If your new to Linux check out one of these guides on how to install Mate on Fedora 18 http://arstechnica.com/information-technology/2013/01/installing-the-mate-and-cinnamon-desktops-on-fedora-18/ http://www.linuxbsdos.com/2012/12/01/install-mate-on-fedora-18/ Fedora doesn't have a Mate spin yet. To work around this you need to do a minimal install or netinstall. I chose to do the net install. The netinstall iso Read more [...]

Happy New Years

Happy New Years. If your still planing your new years party check out http://www.newyearsguide.info/setting-up-for-the-new-years-eve-party/ for some New Years party ideas. You might also find these links helpful. Ideas on things to do New Years day http://www.newyearsguide.info/things-to-do-new-years-day/ Help with New Years Resolution http://www.newyearsguide.info/new-years-resolution/ Read more [...]

Boycott Get Rich Slowly

I'm boycotting the Get Rich Slowly blog. It used to be a good blog but now its dead. On Dec 18th they posted a post called the cost of gun ownership and in the post said they didn't want to make it political. The timing is disrespectful and it had nothing to do with personal finance.  How do you post on one of the hottest political topics of the week and say you don't want it political? A personal finance blog isn’t the place to debate gun politics and I'm not sure I call what they Read more [...]