Despite this glowing review, TkDesk is not without its flaws. The most obvious complaint is its speed. One frequently notices operations that slow down because of the large amount of Tcl being interpreted behind the scenes. I usually choose not to display the icons in the file browser—updating the icons in a large file list often takes too long. However, this is likely to change very soon. Tcl 7.6 and earlier versions were internally based on no more than substituting strings over and over again. While this allows for the design of a very simple interpreter, it does cause a performance hit in frequently executed code. Tcl 8.0 has an internal byte-code interpreter and provides speed comparable to Perl. Unfortunately, the object-oriented extension to Tcl, [incr tcl], that TkDesk is written in, is not yet ported to Tcl 8.0. The work to port [incr tcl] to Tcl 8.0 is ongoing and may be finished by the times this article goes to press. Once [incr tcl] works with Tcl 8.0 we can expect a big speed increase in TkDesk.
I hope that TkDesk is not the last word in GUI desktop managers for Unix and, in particular, Linux. Several other projects, like the K Desktop Environment and GNUStep show much promise. Just as TkDesk currently demonstrates, I think the future of GUI design lies in tying the widgets that these projects provide to a flexible scripting language like Tcl, GUILE or other scheme variants, Python or some yet-to-be-invented scripting language. The success of the GIMP project is another testimony to the success of this type of design. For now, though, TkDesk is the ruler of my desktop.
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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- SUSE LLC's SUSE Manager
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- Managing Linux Using Puppet
- Non-Linux FOSS: Caffeine!
- Doing for User Space What We Did for Kernel Space
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- Parsing an RSS News Feed with a Bash Script
- Google's SwiftShader Released
- Rogue Wave Software's Zend Server
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