Archive for the ‘Blog’ Category

Why interrupt affinity with multiple cores is not such a good thing

One of the features of x86 architecture is ability to spread interrupts evenly among multiple cores. Benefits of such configuration seems to be obvious. Interrupts consume CPU time and by spreading them on all cores we avoid bottle-necks. I’ve written an article explaining this mechanism in greater detail. Yet let me remind you how it [...]

PSC for Personal Super Computer

I’ve been waiting for this for quiet some time and now it is finally here. I am talking about Personal Super Computers. Five years ago I purchased a brand new laptop computer. It is a decent computer – I am still using it today. It cost me around 1500$ U.S. Obviously, today it is less [...]

2 reasons why small package repository is better than large

I am in the middle of CentOS and Ubuntu comparison frenzy. It started with an attempt to assert quality of Linux distributions made for busy people. Today I am considering packaging. When comparing Ubuntu and CentOS packaging systems, first thing that crosses my mind is that, well, size matters. Ubuntu has nearly 70000 packages. CentOS [...]

Few thoughts about Ubuntu servers and CentOS

This Saturday I tried to configure VNC server to start in the background automatically at boot. You know, in Ubuntu you normally run VNC server when you need it and stop it when you don’t need it anymore.

“Linux Tips and Tricks”, cracking passwords and security

Carla Schroder of Linux Today has posted a nice list of her Linux tips and tricks, here. One tip I could not make work is Cracking Passwords. The program simply refused to identify my passwords file. I found that it might be because it doesn’t support this kind of encryption or something like that.

Mono is here to stay, period?

There has been a new development in the subject I raised a day ago. It seems that there has been some effort on Microsoft’s side to clarify the legal issue with the Mono Project. According to this article in iTWire, Microsoft will extend its Community Promise to the C# and CLI standards.

Security breach in Apache and other web-servers

Apparently, there is a serious breach in Apache’s security. Attacker can launch a denial of service attack on Apache based web-site causing it to stop responding.

Mono is here to stay

There’s an ongoing discussion about the Mono project. Mono is somewhat controversial because it is an open source implementation of C# programming language and .NET platform. Mono has constantly being bullied because both C# and .NET are creations of the cause of all evil on earth, Microsoft corp.

One sane voice in the crowd

I am naturally reviewing and following many blogs and news sites related to Linux. There are two themes that keep strong presence in the Linux related media. This are of course: Is Linux ready for being Desktop operating system? Bitching Microsoft. I must say that I am myself is guilty of expressing my point of [...]

What it takes to be a QA engineer

I am wondering what it takes to be a QA engineer, testing software. As a software engineer I am looking for ways to solve problems. I’m usually being told where the problem is and there I am looking for a solution. It takes me hours and sometimes days. I am trying various configurations. I am [...]