Mostly you just need to disable IPv6 protocol. But in some case, you do not need it at all or it may increase browsing speed. Linux has Internet Protocol Version 6 (IPv6) enabled. By default, almost all distros enable it. Red Hat and similar ones (like Fedora and CentOS) Open your modprob.conf file [...]

What do you think of when you read the term “scheduler”? If you think of the mechanism that schedules the order in which processes are served, then you already have an idea of what this article is about. The term “scheduler” itself is broad, and in this article we will narrow [...]

Hugepages can be allocated using the /proc/sys/vm/nr_hugepages entry, or by using the sysctl command. To view the current setting using the /proc entry: # cat /proc/sys/vm/nr_hugepages 0

I found this article this evening before go to sleep. I agree the most of its points, It gives us a very basical way on how to verify good system administors. ”The best admin is the person with the right mindset, not the person with the most time on the job.“

If you require more controls on file permissions, ACL (a.k.a Access Control Lists) might be a nice choice. ACL goes beyond normal user-group based permission control and allow setting permissions on per individual user or group basis.

I’ll show two tips here on how to check a process’ running time, it’s very helpful for system administrators to know these tips as they may need to clean some abnormal processes. It’s a common issue when using FastCGI with apache.

The Exceptional Performance team from Yahoo.com identified a number of best practices for making web pages fast. The list includes 34 best practices divided into 7 categories.

The Journaling Block Device layer (JBD) isn’t ext3 specific.  It was designed to add journaling capabilities to a block device.  The ext3 filesystem code will inform the JBD of modifications it is performing (called a transaction). The journal supports the transactions start and stop, and in [...]

As the original version is no longer available at rightbrainnetworks.com, let me forward it here, it worths a careful read especially for LAMP administrators. PHP is simultaneously the most infuriating and joyful languages I’ve ever worked with. I say “infuriating” primarily because the function [...]

I just tried the famous shell fork() bomb on my Laptop, which is running Debian lenny. (I dare to do this because I’m going to shut down my laptop.) Please note that do NOT run it on your production server!