The Linux Trace Toolkit
As this article has shown, LTT is an effective tool for recording critical system information. Moreover, it is rather simple to use and the information presented is accessible to a large portion of the community. In an academic environment, LTT can be used in a course on operating systems, helping students get first hand experience with a live operating system and how it interacts with different applications.
Given its capabilities, modularity, extensibility and minimal overhead, we hope to see the tracing code become part of the mainstream Linux kernel soon (maybe not in 2.3/2.4 currently in feature freeze, but in the next development branch). Another possible application for LTT, which gathered a lot of interest, is to use it as part of a security auditing system with Tripwire-type capabilities. At the time of this writing, the authors know of at least one Linux distribution which plans to include LTT as part of their standard distribution.
Karim Yaghmour (email@example.com) is an operating system freak. He's been playing around with OS internals for quite a while and has even written his own OS. He's currently completing his master's degree at the Ecole Polytechnique de Montréal, where the Linux Trace Toolkit is part of his research. He started his own consulting company, Opersys, Inc., that specializes in operating systems (http://www.opersys.com/) and offers expertise and courses on Linux internals and real-time derivatives.
Michel Dagenais (firstname.lastname@example.org) is a professor at Ecole Polytechnique de Montréal. He has authored or co-authored a large number of scientific publications in the fields of software engineering, structured documents on the Web and object-oriented distributed programming for collaborative applications.
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.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
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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