Tuesday, April 19, 2011

Clearing (disabling) swap on Ubuntu

Today I was searching for ways of improving performance (memory/disk IO) on my Ubuntu desktop after running some application with extensive memory requirements - e.g. VirtualBox instance, I found that a bit of swap space (10%) remained in use, which was downgrading the overall system performance (any new application/windows = IO). Following commands that helped to offload previously paged data back to the RAM:

> sudo swapoff -a
> sudo swapon -a

Note:
Command to recreate swap partition: sudo /sbin/mkswap /dev/<e.g. sda4>

Some references:
http://ubuntuforums.org/showthread.php?t=848184
http://embraceubuntu.com/2005/10/07/memory-swap-management/
http://www.cyberciti.biz/faq/linux-check-memory-usage/

Friday, April 8, 2011

Ubuntu server & NAS

When I was looking for a 'similar-to-NAS' capability for my Ubuntu server running Webmin interface, I found quite nice guide here.

Wednesday, April 6, 2011

Sharepoint 2010 education

Last day of 3-day's Sharepoint 2010 training at Gopas, lectured by Lubos Hoher - a freelancer / consultant.