A Roomful of Meth-Addicted Monkeys
I was on travel last week with one of my colleagues. We went to the Pittsburgh Supercomputing Center to attend a software team meeting sponsored by a client, and to give a couple of presentations to PSC staff.
During a quiet period my colleague and I happened to find ourselves comparing notes on our company-supplied laptops: Dell Latitude E6500s. My colleague, let's call him Diglio, runs Windows 7 on his, and I am running Kubuntu 10.04. We were just sitting ourselves down in an empty conference room to take advantage of the CMU wireless to check our email.
Diglio opened his laptop, which had been suspended, and nothing happened. Well, sort of. The fan came on, but not the screen. Nothing he could do would turn the screen on, he had to reboot.
Watching that I said, "That happens to me sometimes too. I thought it was the Linux power management tools that were screwing up. Do you sometimes close the lid to suspend, stick the laptop back in your case only to find a very hot laptop a bit later when you realize that it didn't suspend properly as well?"
It was then that I remembered a Slashdot story about the Dell E6500s which I had read back in November. One of the comments was, "...the power management firmware seems like it was written by a roomful of meth-addicted monkeys."
After observing how both Windows and Linux experience the same power management issues on the E6500s, I'd have to agree. How hard could it really be for a vendor to get his own hardware's power management firmware to work properly?
Dell, any comments on that?
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