Ruben Laguna's blog

Jan 10, 2007 - 1 minute read - Comments - control disable fedora headphones internal jack linux preferences speaker volume

How to disable internal Loudspeaker

My Compaq Evo has two internal speakers, the PC speaker (the one responsible for beeps, etc) and another conventional loudspeaker connected internally to the sound board. One would expect that conecting the headphones to the headphones jack will automatically shut off/disable the internal speaker but it doesn’t. You must first go to the Volume Control at System -> Preferences -> Volume Control and then click Edit->Preferences and enable the Headphone Jack Sense checkbox.

Jan 9, 2007 - 1 minute read - Comments - altwin beryl compiz inputdevice key keyboard linux option section super super_win

How to enable Windows key as Super key in linux

I’ve you tried beryl or compiz you probably had notice that the Super key (the windows key, also known as Meta key) is used a lot. By default in my Fedora Core 6 installation the Windows key is not enabled, I had to add Option "XkbOptions" "altwin:super_win" to the InputDevice section of my /etc/X11/xorg.conf to activate it. This is how the InputDevice section look like now: ... Section "InputDevice" Identifier "Keyboard0" Driver "kbd" Option "XkbModel" "pc105" Option "XkbLayout" "es" Option "XkbOptions" "altwin:super_win" EndSection .

Jan 8, 2007 - 1 minute read - Comments - config cvs denied permission pserver selinux setenforce Uncategorized xinetd

CVS pserver,xinetd and SELinux

Today I faced a strange problem setting up CVS pserver as an xinetd service. I was getting “Permission denied” error on CVSROOT/config file. But cvs ran as root and config file permission were ok. Then I realized (by reading this post) that the problem was SELinux. setenforce 0 solved the problem. I have to dig a little more on restorecon and ls -Z to understand how to setup SElinux, xinetd and CVS in the right way.

Jan 8, 2007 - 1 minute read - Comments - alias bash bashrc history linux

Enabling bash history and more

After reading the tip I mentioned in my previous post I made some changes to my `~/.bashrc` to enable bash history aliase32="$HOME/eclipse/eclipse321/eclipse"aliase33="$HOME/eclipse/eclipse33M4/eclipse"aliasnb="$HOME/netbeans-5.5/bin/netbeans"JAVA_HOME=$HOME/jdk1.6.0 PATH=$JAVA_HOME/bin:$PATH:$HOME/bin: exportPATH HISTFILESIZE=1000000000HISTSIZE=1000000HISTCONTROL=ignoredups shopt-s histappend INPUTRC=~/.inputrc and to my `~/.inputrc` "\e[A": history-search-backward "\e[B": history-search-forward “\e[A”and“\e[B”` being whatever your terminal uses for up & down. And with the following simple command I can see the commands I use most: cut -f1 -d" "~/.bash_history |sort |uniq -c |sort -nr |head -n 30

Jan 2, 2007 - 2 minute read - Comments - apache chart graph java jmeter plugin Uncategorized

Better JMeter Graphs

If you are tired of the old “Graph Results” listener that JMeter provides and want better charts in your Jmeter test plan take a look at this JMeter plugin. This is how the old “Graph Results” look like: Click on the above image or here to see an enlarged version of the old Graph Results Checkout this new JMeter plugin that provides a new Statistical Aggregate Report listener. (see the screenshot)

Jan 2, 2007 - 2 minute read - Comments - apache enhanced jdbc jmeter sampler Uncategorized

JMeter JDBC Sampler

UPDATE2:: It seems that my bugreport has been reviewed and the patch I submitted is merged into the JMeter svn tree. I also submitted a couple of patches dealing with COMMIT behavior that also have been included into the svn tree. so I strongly advise to use the standard JDBC Sampler as it includes alll features of the Enhanced JDBC Sampler plus other corrections UPDATE: It seems that the patch has been merged with the standard JMeter source code tree as SVN r528906.

Dec 14, 2006 - 2 minute read - Comments - apache benchmarking bugzilla database enhanced java jdbc jmeter sampler

Enhanced JDBC Sampler for Apache JMeter

I’ve moved this post to the following page. UPDATE: The files here will only run in JRE 1.6. I will try to provide JRE 1.5-compatible files as soon as possible. Thanks to Daniel for pointing this out. Some time ago I posted a bug report for Apache JMeter benchmarking utility (you can find my other jmeter bug reports here) . The bug report contains an enhancement of the current JDBC Sampler to allow JMeter to invoke PreparedStatements and also to change the way Callable Statements are handled to avoid performance problems when using some JDBC drivers (mainly Sybase).

Dec 12, 2006 - 1 minute read - Comments - apache chart graph java jcharts jfreechart jmeter plugin report visualizer

Better JMeter Graphs

I’ve moved this post to the following location UPDATE: The files here will only run in JRE 1.6. I will try to provide JRE 1.5-compatible files as soon as possible. Thanks to Daniel for pointing this out. If you are tired of the old “Graph Results” listener that JMeter provides Click on the above image or here to see an enlarged version Checkout this new JMeter plugin that provides a new Statistical Aggregate Report