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Comment: Clearly there IS a question (Score 1) 505

by khb (#47758569) Attached to: California DMV Told Google Cars Still Need Steering Wheels

90% of accidents (or more, depending on the study) are due to human error. So the DMV insistence on putting the humans back into the drivers seat is actually counterproductive. "there's no question when it comes down to the safety of those on the road." ... the question is are the other humans on the road more or less safe with the google vehicle operators able to override the computer?

While I'm not interested in being an early adopter of this or most automotive technologies, there are lots of questions when it comes to safety. It is a pity that government hardly ever uses science or logic in the decision making.

Comment: What was the performance impact? (Score 1) 1

by khb (#47756509) Attached to: gcc LTO reduces firefox package size by 50%

The "article" is just a pointer to the bugtracker entry which is good but lacks any clues as to measured performance.

LTO has been a win in commercial workflows for many years. Obviously it can be an obstacle for debugging (when entire call trees are eliminated or collapsed single stepping in the debugger is problematic) and if build times become excessive the results may not be worth the cost.

But in the end the real payoff is runtime. Without impressive speed ups for user critical to acceptability operations it is just air guitar!

Comment: Consider Unix (Score 1) 810

by khb (#47751311) Attached to: Choose Your Side On the Linux Divide

Compare and contrast SysV init vs Solaris SMF. Not that systemd is SMF but there are real Enterprise class problems with the more traditional model. And systemd developers aren't the first to notice them.

I haven't looked closely enough to have an informed opinion about how good the systemd solution is, but SMF on Solaris is vastly better than the situation in older SunOS system I've dealt with over the years

Comment: Complete nonsense.... (Score 1) 199

by khb (#47285801) Attached to: Overeager Compilers Can Open Security Holes In Your Code

"...decide it's an error.."

No, it is an "optimizing" compiler not a "correcting" compiler. The optimizer can detect that no language defined semantic will be changed by removing the code, so it does. As others have noted, "volatile" is the fix for this particular coding / compiler blunder. However ill-defined, it is *not an error*.

As for the folks commenting that only C can run in small embedded processors that's hogwash. Huge mainframes of the early ages had smaller memory sizes and ran FORTRAN (now Fortran, but then it was all caps), COBOL, PL/I (and .8 for IBM internals), Algol and other languages. Most made entire classes of C blunders impossible, and there is no fundamental reason why we couldn't go back to safer languages for embedded programming (and good reasons why we ought to; not that I expect we shall).

Comment: Why? (Score 2) 218

by khb (#47275947) Attached to: It's Not a Car, It's a Self-Balancing Electric Motorcycle (Video)

The gyos add complexity, and dropping a third wheel doesn't save that much space. See Riley's classic or just search for some of his existing designs.

As a previous owner of a Sparrow, I wish these guys luck. Unfortunately, I need a three seater trusty (actual) motorcycle sits idle since I've too often got to worry about hauling two kids these days.

Comment: Re: $150 MRC for hotspot that doesn't travel with (Score 1) 216

by khb (#46986865) Attached to: GM Sees a Market For $5/Day Dedicated In-Car Internet

"... No one owns a car for 10 or 20 years anymore..."

Each of my Hondas have done at least 10 years. My 1996 Acura is still quite healthy. My 1987 Shadow as well.

I suspect that no one who reads /. Is in the target demographic. It will be interesting to see how this plays out.

Comment: Re: $150 MRC for hotspot that doesn't travel with (Score 1) 216

by khb (#46986863) Attached to: GM Sees a Market For $5/Day Dedicated In-Car Internet

"... No one owns a car for 10 or 20 years anymore..."

Each of my Hondas have done at least 10 years. My 1996 Acura is still quit healthy. My 1987 Shadow as well.

I suspect that no one who reads /. Is in the target demographic. It will be interesting to see how this plays out.

Comment: Re:You know what worked better for me then longhan (Score 1) 191

Indeed. In one of my first college courses we were permitted to take notes in the (very small) margin of the text itself. This led to focus on the instructor and very small amounts of note taking.

In High School I took more notes and learned less.

The best situation was where I took little or not notes, but paid one of the transcribers for the hearing impaired for their professional notes (in those dark days before professors provided pointers to their web page ;>). I focused on the lecture, and a professional took notes. I wound up not using the professional notes all that much (usually it repeated things in the text book ... but for the one time in a hundred that material wasn't in the textbook AND was on the test ... it was invaluable ;>).

The other "trick" was to write notes immediately *after* class. While precise dates and fiddly facts weren't recorded, the overall structure of the lecture and the immediate impressions I formed were there for the recording. This has proved useful in the many years since ... recording the gist of discussions (if I can't remember it 10 minutes after the meeting, it probably wasn't terribly important) ... and sending them out as minutes (soliciting corrections from attendees) is usually far more effective than recording and ignoring the mp3 when trying to figure out at what meeting we went down the wrong algorithmic path ;>

Comment: Re:True Costs (Score 2, Interesting) 589

by khb (#46925809) Attached to: Microsoft Cheaper To Use Than Open Source Software, UK CIO Says

Perhaps the language from "across the pond" is hard for some US readers to parse. "Exploitation" meaning "use effectively" ... without knowing more about what this bloke's department(s) are tasked to do, it is hard to call him to task for his choice.

I would not be surprised if Macintoshes were even a better match for his user base.

I cannot seem to find it, but I recently ran across a bizarre claim that the average office worker's time is dominated by outlook (duh) but that Microsoft Word was number two at a paltry few minutes per day, and Powerpoint even less than that. Quite possibly true, and while that does tee up the question for why they need Microsoft products at all (since casual users needs can be met by a wide variety of FOSS projects) it would explain why retraining is *so* difficult. For people who live and breathe computing, learning a new platform isn't hard and is even "fun". For people who really only need to tinker with a few characters in documents that pass through their hands for a few minutes per day ... virtually ANY change is highly disruptive.

Comment: Re:Little disturbing (Score 1) 491

by khb (#46565305) Attached to: How Satellite Company Inmarsat Tracked Down MH370

The published text of the PM's speech makes it clear its based on the analysis (what you are calling "statistical probability") not debris or black box.

I don't know why anyone would find that disturbing.

Even if he had debris, for any given family there would still be some "statistical probability" that their loved one survived (infinitely close to zero) involving some sort of miracle, a hidden parachute or a missed connection, etc. Just as we'd discard such false hope, pretending that there is some other place folks ought to be looking or that there is any realistic chance that their family members are safe as hostages in some terrorist base.

It is exceedingly unfortunate that the data analysis was relatively slow (and the data itself was never open sourced); the delay resulted in much lost time and resources by many naval and air groups, and lots of needless gnashing of international teeth.

If there's any lesson here, the satellite data feed(s) should become a bit more formalized, and their release in the event of an accident be as standardized as the black box information. As for the $10/flight for the data, even if the airline doesn't pay for it up front, the data collectors should collect it, and save it until after the flight has landed. If it doesn't land, the airline can pay some much larger fee to get the data ahead of it going public ;>

Stupidity, like virtue, is its own reward.