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Why Screen Lockers On X11 Cannot Be Secure

spike hay Re:not the point (374 comments)

Good luck ever actually getting rid of it, considering it is what every *nix gui app runs on. Even if the switch to Wayland happens, most people will still be stuck with using XWayland constantly for a decade.

4 days ago
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Why Run Linux On Macs?

spike hay Re:Running Linux on a MacBook Air ... (592 comments)

Whaa? I'm not talking about the FS using memory and CPU, but that it is slow for accessing data off the disk, which is a common bottleneck.

about two weeks ago
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Why Run Linux On Macs?

spike hay Re:Running Linux on a MacBook Air ... (592 comments)

OSX is slow as balls compared to Linux, on Apple hardware no less.

benchmarks.

Postmark on Ubuntu on an Air is THREE TIMES as fast on Ubuntu as Linux. Probably because HFS is an abomination. Even graphics accelaration is much better with Linux. MAFFT is more than twice as fast.

about two weeks ago
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Why Run Linux On Macs?

spike hay Re:To escape the walled garden (592 comments)

Only for python packages. apt-get/yum/etc are far easier and more reliable than half-assed package managers like Homebrew.

about two weeks ago
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Linux Controls a Gasoline Engine With Machine Learning

spike hay HCCI are efficient like diesel (89 comments)

HCCI engines are a really cool technology, but very hard to do.

Efficiency of internal combustion engines is related to the compression ratio - the ratio of the combustion chamber from largest to smallest capacity.

Gasoline engines usually have a compression ratio around 9:1. Higher, and the compressional heating combined with the heat off of the walls can cause "knocking," which detonation of pockets of fuel/air away from the flame front from the spark plug. Engines with premium gas can run higher compression ratios. Higher-octane fuels can be compressed more without burning, but of course there is no benefit to running it on engines rated for regular.

Diesel engines run ratios of around 17:1, resulting in much greater efficiency. Diesel engines of course don't have spark plugs. The fuel is injected just before top dead center, where the air is compressed maximally. This is in contrast to a gasoline engine, where it is well mixed with air before entering the combustion chamber. Due to compressional heating, it spontaneously combusts very quickly, much faster than the combustion in a spark-plug-ignited gas engine.

HCCI well-mixes the air and gas upon intake, but ignites by compression like diesel. This gives diesel efficiency. In addition to the better compression ratio, HCCI controls power by the amount of fuel injected, like a diesel. Gasoline engines use a throttle to choke off the air supply, which induces losses because the engine has to work harder to pull air at lower power. That's how engine braking works, and also why diesel trucks use a separate "jake brake" to use the engine to brake.

It must run under a leaner mixture. It's really hard to have complete burning of fuel, and avoid knocking. That's why it has to be very carefully computer controlled based on temperature and such.

about three weeks ago
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Unity 8 Will Bring 'Pure' Linux Experience To Mobile Devices

spike hay Re:Better metrics for Ubuntu vs other Linux? (125 comments)

If you're talking about stackexchange, you are getting into a sysadmin/developer/knowledgeable user community. It's not really a representative sample.

AFAIK, no one has really got a reliable measure. It's pretty much impossible when you are talking about most FOSS. It is pretty clear that Ubuntu is by far and away the most popular for desktop usage.

about 2 months ago
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Unity 8 Will Bring 'Pure' Linux Experience To Mobile Devices

spike hay Re:Mint Debian (125 comments)

I have a hard time believing that accounts for a significant percentage of Ubuntu's search volume. If both had the same popularity, for example, and even one third of people wanting info about Mint searched for "Linux Mint," if Ubuntu had a search volume of 166, then Mint would have a search volume of 33. This is a much smaller relative disparity than actually seen. And the likely case is that while some people searching for Mint information query for Ubuntu, most are still going to search for Mint.

about 2 months ago
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Unity 8 Will Bring 'Pure' Linux Experience To Mobile Devices

spike hay Re: Mint Debian (125 comments)

Are you fucking kidding me? I have no idea why people ever think of Distrowatch as mattering. All that it measures is page hits to Distrowatch's info page about that distro. It only measures what people who go to Distrowatch click on at Distrowatch. Notice that the numbers are in the low thousands per month at best. Their audience is longer-time Linux users who remember it from like fifteen years ago.

Google search volumes are by far a more accurate gauge of interest, as it is both a much larger sample, and a more uniform sample, as a broader range of people use Google than visit some fucking site that was cool during Slashdot's heyday. Sampling 101.

about 2 months ago
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Unity 8 Will Bring 'Pure' Linux Experience To Mobile Devices

spike hay Re:Mint Debian (125 comments)

The vast majority of linux users use Ubuntu, with Unity (they don't know what XFCE is). They just don't post on Slashdot. Take a look at this Google Trends frequency of search terms here.

Mint barely registers compared to Ubuntu. (Also, distrowatch really is useless).

The only people I know (aside from a few sysadmins with RHEL) that run another distro are my parents, because I put Mint on their computer. I just use FreeBSD now.

about 2 months ago
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Aliens Are Probably Everywhere, Just Not Anywhere Nearby

spike hay hang on (334 comments)

So you're telling me that things in other star systems are far away?

about 2 months ago
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Debian Forked Over Systemd

spike hay Re:A joke? (647 comments)

Except that it takes ages. The new pkgng on FreeBSD awesome though. Just as good as apt and not a pile of shit like pkg_tools.

about a month ago
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UK Police To Publicly Shame Drunk Drivers On Twitter This Christmas

spike hay Re:There's no point in shame (256 comments)

Well, you will pay more (through incarceration and costs of the crime to society) if you don't prevent it in the first place.

It doesn't matter if you don't think you should pay for it. That's not how the world works.

about 2 months ago
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Mozilla's 2013 Report: Revenue Up 1% To $314M; 90% From Google

spike hay Re:How do you spend 1/3 a billion $ and get Firefo (161 comments)

Just having that much money means that the organization becomes bloated, and then produces worse and worse software due to design-by-committee and such.

about 2 months ago
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How Baidu Tracked the Largest Seasonal Migration of People On Earth

spike hay damn (48 comments)

Can Slashdot at least try to tone down the retardation?

about 3 months ago
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The Effect of Programming Language On Software Quality

spike hay Re: as a perl wizard.... (217 comments)

I bet that's because there are few new perl devs, so on average they are far more experienced.

Got to be something like that. Perl is worse than C for the ability to have subtle errors, and it doesn't have C's excuse of manual memory management.

about 3 months ago
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F.C.C., In Net Neutrality Turnaround, Plans To Allow Fast Lane

spike hay Re: Meh, vote left. (410 comments)

Actually running fiber costs huge amounts of money. For a normal city it's easily hundreds of millions or more. The rule of thumb is that you need 30% adoption for it to be worthwhile in an area, which is a significant risk, and is mathematically impossible for more than 3 companies.

about 9 months ago
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F.C.C., In Net Neutrality Turnaround, Plans To Allow Fast Lane

spike hay Re: Meh, vote left. (410 comments)

The problem with the internet, especially cable, is that it is a natural monopoly. It's like most utitilities that require infrastructure to the home. It would be stupid to have 10 competing water companies, right? That's because there would be large amounts of redundant infrastructure. Therefore, it is better to have a highly regulated monopoly with pricing set to prevent monopolistic rents.

The current situation is that each cable company has a monopoly in most areas, with DSL providing a duopoly in some places. Obviously, monopolistic pricing occurs, with prices far above the free market rate for inferior service. But that isn't illegal! You have to show that they are acting in an anticompetitive manner, which is very difficult.

Even in the case of oligopilies, price fixing is legal as long as it is implicit: A company can signal to another by unilaterally raising prices in a way that would be irrational if non-cooperative behavior is assumed. Then the other company will raise their prices as well, to acheive a cooperative outcome with both companies making more money. Again, this isn't illegal, unless there is an explicitly communicated price-fixing agreement.

Thus, FTC antitrust stuff means fuck-all.

about 9 months ago

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