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March 2, 2022 – 2:00 pm

Books have been written on the subject of awk and sed. Here’s a small sample of commands I put together over the years that are useful for everyday system administration tasks. Most of these tasks …

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Articles tagged with: CPU

Copying Data: Are We There Yet?

December 27, 2009 – 7:12 pm

I am sure this will sound familiar: you are copying a large amount of data – either locally or over the network – and you are wondering how long it will take and if there is a way to make things go faster.You may be surprised, but it does matter what type of files you are copying: 1Gb-worth of many small files will take considerably longer to copy than two 500Mb files. The hardware you are using is an important consideration, but it’s not the only factor limiting data transfer speed.

Controlling Process CPU Utilization

March 9, 2009 – 12:36 pm
Grapevinesnail_01

Let’s say there is a process on your Unix/Linux system that sometimes tends to consume all CPU resources and become unresponsive. At the same time, you do not want to terminate the process at the …

Encoding Videos for XBox 360 and PS3

January 1, 2009 – 4:47 pm

Both Xbox 360 and PS3 support a variety of video codecs and are capable of playing high-definition video files. One of the most popular formats for HD video files is Matroska (MKV), which provides excellent …

Linux and High I/O Wait

December 21, 2008 – 12:07 am
network_cable_01

When you look at the CPU activity of your computer, one of the parameters is the iowait. This value shows how much time your CPU wastes while it is waiting for I/O operations for complete. …

Convert Images to PDF

July 18, 2008 – 12:26 am
Visualization

Converting sets of images into multi-page PDF files makes it easier to organize and share them. All you need for the conversion is the free that will run on your Windows, Linux, MacOS and many other operating systems. If you are running a recent version of Linux, chances are that ImageMagick is already installed on your computer (just type “which convert” to check).

Effective Virus Protection

May 28, 2008 – 5:13 pm
Computer Password Security

How do you protect your computer from viruses? Most computer users just buy antivirus software, install it, and reboot their PC – done. If only it was that easy. Over the past several years percentage of home and business computers infected with viruses has been steadily growing. Most PCs are sold these days with preinstalled antivirus software. And yet, the number of infected computers keeps on growing…

Solaris performance monitoring

November 28, 2005 – 4:47 pm
sun_solaris_0002

The following is a brief overview of common performance monitoring tools for Solaris, including built-in tools, freeware add-ons, and commercial applications.
Souce: http://www.sunperf.com/perfmontools.html
Built-in Tools
vmstat
The vm in vmstat stands for Virtual Memory, of course. So let us …