loxal DEV

...technologies to release ideas — a loxal services powered blog

Firefox Qt4 port

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March 11, 2007

The question is: Why Firefox was still not ported to Qt4?!

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Apple's evaluating a new JVM

September 09, 2010

To boost the Java performance on x64 Mac systems, Apple is evaluating a new Java VM that is derived the BSD port. You can try the new JVM using the -XXaltjvm=bsdserver VM args which is available in the recent JDK/JRE developer preview. Using this new VM may improve the Java performance and increase benchmark scores but performance drawbacks can be expected as well.

Connect to an Oracle DB as SYSDBA using IntelliJ

September 19, 2012

Use " sys as sysdba " as user name or supply the internal_logon with the value sysdba in the advanced properties tab. So internal_login is the property name that should be used to mark the current user as a sysdba.

Tuning ext4 for performance with emphasis on SSD usage

April 02, 2009

The obligatory disclaimer: The more performance you gain, the more data integrity you loose! But if you want to tune something like a file system, I strongly assume that you know what you are doing :) These tips apply to all major Linux distributions like Fedora/Red Hat, OpenSUSE, and Ubuntu that are already using ext4 or are going to make ext4 their default file system. As write operations on Solid State Disks (SSD) are expensive the tips below are focused on SSD usage but also apply to HDD usage as well . My Ubuntu 9.04 Jaunty /etc/fstab after a fresh installation: [...] UUID=d818ddf9-ff01-e21a-a67d-3ceab43a9e2b / ext4 relatime,errors=remount-ro 0 1 UUID=0d339122-74e0-e0ea-805a-7879b1fa3172 /home ext4 relatime 0 2 [...] My tuned Ubuntu 9.04 Jaunty /etc/fstab : [...] UUID=d818ddf9-ff01-e21a-a67d-3ceab43a9e2b / ext4 noatime,barrier=0,nobh,commit=100,nouser_xattr 0 1 UUID=0d339122-74e0-e0ea-805a-7879b1fa3172 /home ext4 noatime,barrier=0,data=writeback,nobh,commit=100,nouser_xattr 0 2...