The Arrival of NX, Part 1
Staying quiet didn't last long for me, however. I gave up only until I by accident came across a posting by Gian Filippo Pinzari. This was more than two years ago, March 23, 2003, to be precise. The posting's title was "About our effort at NoMachine". Directed to firstname.lastname@example.org, the open mailing list of the then still-united XFree86 project, Gian Filippo detailed the achievements of a group of developers in his company, NoMachine. The group successfully had concluded work on the first version of a new "low bandwidth remote X" application, NX, that the company started to sell as a commercial product. Later, I found out that Gian had sent similar messages to other addressees, including the Linux Terminal Server Project (LTSP), KDE Core Developers, GNOME Developers, RealVNC, TightVNC and the rdesktop mailing lists. The developer communities thus were informed of NX.
In these various messages, Gian hinted at the commercial NoMachine NX Server product. The features he outlined sounded exciting enough, but it was another message I took from his postings that thrilled me the most. It was how he outlined that NoMachine had released its main intellectual property, the core NoMachine NX libraries, under the GPL license. He wrote, "It is there and everybody can use it."
Out I went and installed NX, and I immediately was hooked. The performance was in a completely different league from any other remote X or GUI connection I had seen on Linux.
Even better, I was not restricted to X11 sessions. I also could hook up to a TightVNC server in our company network. At the time, it was hosted on a remote site, wired up with an ISDN dial-in line. Tunneling that VNC connection through an NX proxy link, I experienced a speed increase at least two-fold over a plain vanilla TightVNC link.
Furthermore, NX also let me access a Windows XP Professional box or an MS Windows Terminal Server, which both use RDP (see Figures 1 and 2). Again, with RDP running over NX, performance and response were remarkably better than when going through a flat rdesktop connection.
I started to sense what Gian Filippo had hinted at when he wrote in his announcement mail: "In the future, we envision a world where any application is available to any device, from anywhere in the world. To make this possible we needed efficient transport and compression of X-Window."
In the two years since my introduction to low-bandwith remote desktop access through NX, I have learned a lot about how the X Window System and remote X connections work. I ran some benchmarks with NX, and I became familiar with NX developers. I learned about their development roadmap. I am still not a C or C++ coder, and I still can't understand anything but about half of the comments in C/C++ source files. But what I've learned is worth sharing with you. I have had a lot of e-mail exchanges with NX developers. All of them, particularly the project lead, Gian Filippo Pinzari, have been friendly and patient and have explained things and answered all my many questions.
NoMachine ships with its GPL code a command-line utility named nxcompsh. It serves to establish peer-to-peer NX sessions. On top of the GPL core NX components released by NoMachine, a commercial version of the software is available as the NoMachine NX Server. This version makes installing, configuring and running NX a simple task, feasible for a common user in seconds.
Practical Task Scheduling Deployment
July 20, 2016 12:00 pm CDT
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
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With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide