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Comment: Check_MK (Score 3, Informative) 170

by tweak13 (#48214575) Attached to: Ask Slashdot: Smarter Disk Space Monitoring In the Age of Cheap Storage?
We switched to Check_MK for monitoring. It's basically a collection of software that sits on top of Nagios.

The default disk monitoring allows alerting based on trends (full in 24hours, etc.) or thresholds based on a "magic factor." Basically it scales the thresholds so that larger disks alert at a higher percentage, adjustable in quite a few different ways to suit your tastes.

+ - Canonical Asked Linux Mint Maintainer to License Binary Packages

Submitted by tweak13
tweak13 writes: According to statements made by Clement Lefebvre, the maintainer of Linux Mint, Canonical's legal department informed him that Mint needed to license Ubuntu's binary packages. These packages are critical for a wide range of Ubuntu-based distributions, and the loss of the availability of these packages would doom many of those projects. According to Lefebvre, the request for licensing was probably not about money, but about controlling Ubuntu's position in the commercial marketplace.

From Distrowatch:

Clem responded, "Money isn't a primary concern. Although the original fee was in the hundreds of thousands pounds, it was easily reduced to a single digit figure. The licensing aims at restricting what Mint can and cannot do, mostly in relation to the OEM market, to prevent Mint from competing with Canonical in front of the same commercial partners."

Comment: Re:Unhelpful article (Score 3, Funny) 449

by tweak13 (#42435351) Attached to: FAA Device Rules Illustrate the Folly of a Regulated Internet
This is exactly what I was thinking. It's the FAA's job to keep planes flying and keep the people on them safe. It sure as hell is not their job to promote internet usage.

Basically the article is saying: "When you arbitrarily assign a job to a government agency, they're not very effective." Wow, I'm so glad that got cleared up. I was about ready to tell the local water works that they need to get me faster internet speeds.

Comment: Re:Also opening up their code isn't simple (Score 1) 946

by tweak13 (#41625533) Attached to: Alan Cox to NVIDIA: You Can't Use DMA-BUF

Go look it up, OpenGL isn't a free "do whatever you like" setup. There is licensing for it for companies like nVidia.

I decided to do exactly that. This is from their licensing website.

The following are the currently available licenses:

Open source license, for use of the S.I.. This is a Free Software License B closely modeled on BSD, X, and Mozilla licenses.

Trademark License. for new licensees who want to use the OpenGL trademark and logo and claim conformance. This license is available free of charge if you are developing open source implementations on open source platforms. For closed source licenses or licenses on proprietary platforms, a charge will be associated with a trademark license.

Emphasis mine. There's also a note on the page that former licensees can open source their code and no longer need a license. If you're making an open source implementation, OpenGL seems pretty open.

Comment: Re:No need for a tuner (Score 1) 232

by tweak13 (#38509784) Attached to: DigiTimes Lends Credence To Apple-Branded TVs For 2012
A huge portion of that 90% has either basic or extended basic cable. Those plans typically do not require a cable box. You can't equate subscribing to cable with not using a tuner.

I currently get basic cable, and my provider sends all the local stations in HD via Clear QAM. I don't have a cable box, and if my provider forced me into getting one (along with the rental fee and $50 increase in programming fees) I'd drop cable altogether and buy an antenna.

Comment: Re:Brilliant Games especially SpaceChem (Score 1) 276

by tweak13 (#37686056) Attached to: Latest Humble Bundle Hits $1 Million
I think the controls are just fine, my mouse doesn't lag, and while you can't get any window size (which is annoying) you have many resolution options available as well as fullscreen.

I remember having a few problems back when the demo first came out, but the finished product has worked quite well for me.

Comment: Re:Prior art: F1 (Score 1) 113

by tweak13 (#36480640) Attached to: GM Patents Data Mining Method For Refining the Chevy Volt

As for alternative fuel, I believe in these times most racing cars were using Jet fuel, ethanol or other crap like that.

Unless the cars were using diesel engines, I'm pretty sure jet fuel wasn't involved. I'm fairly sure F1 has generally used some form of high octane gasoline for racing fuel. Alcohol was more popular with other racing series. Methanol was a much more popular alcohol choice back then, replaced almost entirely by ethanol in recent years.

Comment: Re:Who wrote this article? (Score 1) 505

by tweak13 (#36394520) Attached to: Personal Electronics May Indeed Disrupt Avionics

ILS can't be used in bad weather. They will either switch you to VFR or make you change airports.

This is one of the dumber comments I've seen in this article. ILS is made for bad weather, for various definitions of 'bad'. Why else would you need it?

No, you won't be using it in the middle of a severe thunderstorm, but in moderate rain or heavy fog, it's the only way to reliably land in that situation.

Comment: Re:An engineer's reaction CORRECTED (Score 3, Informative) 505

by tweak13 (#36394374) Attached to: Personal Electronics May Indeed Disrupt Avionics

Somewhere there is an engineer that argued quite vehemently that there is no way the air speed sensors on an Airbus A330 could possibly all fail

There is/was no engineer that argued this. Instead the argument was, "if this happens, what can we do to improve safety in that event?" That failure mode was thought of, I have absolutely no doubt. Engineers thought it was covered, they may have been wrong about that but I'll discuss that later.

leading the engines to stall in mid-flight

An aircraft stalling does not involve the engines, it involves airflow over the wings. Do you have any knowledge of the topic at all? Nothing I've read indicates there was an engine failure on that flight.

The aircraft crashed because when readings became invalid, the computer automatically disconnected the autopilot / autothrottle (as it should have). The pilots then made control inputs that were inappropriate for the situation. They were probably confused by the relative lack of data they had, and the multitude of warnings a complete air data failure causes. The pilots then held a nose up attitude through multiple stall warnings, eventually entering a period of extremely high sink rate. The aircraft had pitched up in excess of 35 degrees through this period, and the pilots held full nose up control inputs through almost all of it. It was the exact opposite of what they should have been doing. The pilots held the stall all the way into the ocean, impacting the water while still in a nose up attitude of more than 16 degrees.

I know people like to get up in arms whenever a crash is blamed on pilot error, but it's pretty clear in this case that the pilot's actions were inappropriate and their inability to recover from the stall despite ample opportunity will almost certainly be listed as the main cause of the accident. There were many contributing factors, but the data suggests that the aircraft would have flown just fine if given proper stall recovery inputs.

What could the engineers have done better? Indicate in a more useful way what was going on and which instruments were reliable. The pilots should have been able to tell at a glance what they should pay attention to and what they should ignore. The avionics display design may not have been good enough for them to do that. The stall warning may have deactivated inappropriately based on the invalid speed, because the computer thought the aircraft was traveling too slow for the angle of attack indicators to function correctly. This failure mode should not exist in my opinion. Either the angle of attack indicator should function at lower speeds, or an alternate stall indication should be used instead. Or just keep the warning on, since the aircraft is quite obviously not in landing configuration. From what I read, they were probably assaulted with a whole host of failure warnings that were confusing and may have contributed to a panic reaction.
Also, pilot training needs to be improved in some areas, especially involving loss of pitot static data. There is no reason an airplane of any type should crash because of a clogged pitot tube. This should be drilled into pilots starting with the most basic beginning flight training. I know from experience the topic is not covered at that level, besides a couple questions that may appear on the knowledge test. In fact, if I had not actually had a pitot tube get clogged during my training, I would have never encountered the situation at all.

There's some fairly good discussion about the events of the flight here.

e-credibility: the non-guaranteeable likelihood that the electronic data you're seeing is genuine rather than somebody's made-up crap. - Karl Lehenbauer