A regular question from my mailbag:
I am in the process of up grading my computer. Where can I get a list of the WUSB for Linux?
Wireless USB adapters are pretty popular for desktop and laptop usage in home. It is capable of sending 480 Mbit/s at distances up to 3 meters and 110 Mbit/s at up to 10 meters. Newer N series can work at 270Mbit/s at up to 300 meters. However, 50-100 meters are acceptable ranges. Unfortunately, finding Linux compatible USB wireless adapter is a big challenge due to driver issues. Over a past few years, I’ve used and installed various USB wireless adapters and created my own small HCL for it. In this quick blog post I will list all working USB wireless adapter.
It is no secret that I am a pretty big fan of excellent Linux Software RAID. Creating, assembling and rebuilding small array is fine. But, things started to get nasty when you try to rebuild or resync large size array. You may get frustrated when you see it is going to take 22 hours to rebuild the array. You can always increase RAID resync performance using the following technique.
The last time I wrote about CDN, I wrote about how to configure CDN for wordpress to speed up your wordpress blog to display content to users faster and more efficiently. However, a few regular readers like to know how to configure the Amazon CDN or other CDN network to use with Vbulletin forum software. In this quick tutorial, I will explains how to configure Vbulletin, Apache/Lighttpd webserver, Bind dns server to use a CDN to distribute your common files such as css, js, user uploaded files and lighten load on your web server.
Core dumps are often used to diagnose or debug errors in Linux or UNIX programs. Core dumps can serve as useful debugging aids for sys admins to find out why Application like Lighttpd, Apache, PHP-CGI or any other program crashed. Many vendors and open source project author requests a core file to troubleshoot a program. A core file is generated when an application program abnormally terminates due to bug, operating system security protection schema, or program simply try to write beyond the area of memory it has allocated, and so on. This article explains how to turn on core file support and track down bugs in programs.