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Comment Re:It's crap (Score 1) 1633

Thus far my comments have been regarding a hypothetical "treasonous" government -- leaving the definition of that to the reader. However, even if the government isn't "treasonous" it may be that a substantial number of its citizens wish to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness -- even if the government is operating entirely within the law.

The question then becomes less about "Constitutionality" and more about exactly how many people want to depart from the existing form of government and its principles.

What if 30% so intensely object to the present form of government that they advocate armed rebillion toward the end that they might institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness?

Is that enough for the more conscientious of the military to stand down as that 100 million citizens seek to leave what they must see as the moral equivalent to a plantation?

Comment Almost all router bandwidth management is shit. (Score 5, Interesting) 104

Almost all router bandwidth management is shit.

Bandwidth management schemes currently used by everything you mention are all base on rate limiting packet delivery based on some mythical QoS value, and they ignore the actual problem that the people who are using these things are attempting (and failing) to address.

The problem is that the point of a border routers is to hook a slower border uplink to a faster interior connection; on the other end of the slower uplink, you have a faster ISP data rate. In other words, you have a gigabit network in your house, and the ISP has a gigabit network at their DSLAM, but your DSL line sure as hell is *NOT* a gigabit link.

What that means is that software that attempts to "shape" packets ignores an upstream-downloads or a downstream-uploads ability to overwhelm the available packet buffers on the high speed side of the link when communicating to the low speed side of the link.

So you can start streaming a video down, and then start an FTP transfer, and your upstream router at the ISP is going to have its buffers full of untransmitted FTP download packets worth of data, instead of your streaming video data, and it doesn't matter how bitchy you are about letting those upstream FTP packets through your router on your downstream side of the link, it's not going to matter to the video stream, since all of the upstream router buffers that you want used for your video are already full of FTP data that you don't want to receive yet.

The correct thing to do is to have your border router lie about available TCP window size to the router on the other end, so that all intermediate routers between that router and the system transmitting the FTP packets in the first place also lie about how full the window is, and the intermediate routers don't end up with full input packet buffers with nowhere to send them in the first place.

Does your border router do this? No? Then your QoS software and AltQ and other "packet shaping" software is shit. Your upstream routers high speed input buffers are going to end up packed full of packets you want less, and you will be receiver live-locked and the packets that you *do* want won't get through to you because of that.

You can either believe this, or you can get a shitty router and not get the performance you expect as the QoS software fails to work.

Then you can read the Jeffrey Mogul paper from DEC Western Research Labs from 1997 here: http://citeseerx.ist.psu.edu/v... ...after which, you should probably ask yourselves why CS students don't read research papers, and are still trying to solve problems which were understood 27 years ago, and more or less solved 17 years ago, but still have yet to make their way into a commercial operating system.

BTW: I also highly recommend the Peter Druschel/Guarav Banga paper from Rice University in 1996 on Lazy Receiver Processing, since most servers are still screwed by data buss bandwidth when it comes to getting more packets than they can deal with, either as a DOS technique against the server, or because they are simply overloaded. Most ethernet firmware is also shit unless it's been written to not transfer data unless you tell it it's OK, separately from the actual interrupt acknowledgement. If you're interested, that paper's here: http://citeseerx.ist.psu.edu/v... and I expect that we will be discussing that problem in 2024 when someone decides it's actually a problem for them.

Comment Re:It's crap (Score 1) 1633

A little anecdote: The wife of a friend of mine, on the morning of 9/11/2001, was watching the news reports come in and the moment the attack on the Pentagon came in, she blurted out "That was the Israelis."

Your little "lesson" about not attacking the military is such common sense that even some housewives consider it incredible that any but a false flag op would do it.

Comment Re:It's crap (Score 1) 1633

History would tell us that asymmetric war isn't fought the way you portrayed in your prior comment -- hence my comment on your ignorance. It is fought precisely to garner public support.

If you had argued that hotheads, loose cannons and false flag ops are not practically soluble by freedom fighters, then I might have asked you to expand your comment.

Comment Re:Mercedes, BMW engineers are dimwits. (Score 2) 360

They saw diesel electric locomotives replace steam engines in just one decade in 1950s.

The reason was different. Diesels cost about 3x as much as steam locomotives pre-WWII. But by the 1950s, diesel engine manufacturing was a production line process and the price had come down.

The real advantage of diesel over steam was that steam locomotives are incredible maintenance-intensive. Here's daily maintenance. That's what had to be done every day, by a whole crew. That's just daily. Here's 120,000 mile maintenance, done about once a year for a road locomotive. This isn't an oil change; this is a full teardown, boiler replacement, and rebuild.

Electric cars don't have that big an edge over IC engines at this point.

Comment Re:Microsoft can't run on x86? (Score 1) 110

In addition to the UEFI requiring bootloaders signed by Microsoft, or security features turned off, there is the use of PowerVR graphics from Imagination Technologies (IT). For many years IT did not support the api documentation required to make a good open driver for these Intel devices. As Platforms there were several other parts of the reference platform that were Windows Only. Co-marketing dollars were applied to Windows devices only, and so on. You think we don't know about the myriad games Intel played?

Comment Should we say hello? (Score 1) 239

We could send radio signals that far, with the big dish at Arecibo. If they have intelligence, and radio, we can communicate with a 1000-year round trip time. Maybe we should transmit some of the proposed canned messages to other civilizations every month or so.

If there is other intelligent life out there, it looks like they're a very long way away. Too far to talk to round trip, even at light speed. None of the known extra-solar planets within a few light years look promising.

Comment Re:Festo has been doing this for years. (Score 1) 36

Right. Traditional pneumatics is rather dumb - most of the time it's on/off, with air cylinders pushed up against hard limit stops. Positional control of pneumatic cylinders works fine, but it takes proportional valves, feedback sensors, and a fast control system. Until recently, industrial systems tended not to get that fancy.

I was interested in using pneumatics for running robots back in the 1990s, but the available proportional valves back then were big and expensive. One useful model of muscles is two opposed springs, and a double-ended pneumatic cylinder can do just that. You can change both position and stiffness, separately. You can simulate a spring, and recover energy. Someone did that at CWRU a decade ago, but the mechanics were clunky. Festo does that elegantly with their new kangaroo. Very nice mechanical engineering.

Shadow Robotics has a nice pneumatic robot hand. Shadow has been doing pneumatic flexible actuators for many years, but now they have good controllability.

Comment Re:We do not need solid state to replace platter d (Score 3, Insightful) 256

No we don't. Hybrid drives are stupid. The added software complexity alone makes them a non-starter for anyone who wants reliability. The disparate failure modes make it a non-starter. The SSD portion of the hybrid drive is way, WAY too small to be useful.

If you care enough to want the performance benefit you either go with a pure SSD (which is what most people do these days), or you have a separate discrete SSD for booting, performace-oriented data, your swap store, and your HDD caching software.

-Matt

Comment Re:Over 18 (Score 1) 632

Nothing you say says that Mr Saverin has gotten away from his US tax liability. Only by renouncing citizenship can one end the tax liability, and even that continues for some years (10 I think) after the renouncement.

He did renounce it. And he renounced it before the IPO. So his liability is for what he owed before he renounced it, which is ... not the $1.1B.

Comment Festo has been doing this for years. (Score 5, Interesting) 36

Every year, Festo, the German robotics company, builds an exotic new kind of robot as a demo. Many of their robots have been "soft".

Here's their whole list of experimental projects. They've been doing "soft robots" since 2007. Others were doing "soft robots" before that, but the control usually wasn't that good. Festo builds soft robots with smooth, precise control. Festo's specialty is precise control of pneumatic systems, so they know how to do this.

Comment I think there's a more important question... (Score 1) 320

How many homeless volunteers took off with the camera and sold it to buy booze?

I think there's a more important question... how many mountain lions, gazelles, and other animals took off with the Harmless Radio Collars(tm) that Marlon Perkins had Jim Fowler attach to them while filming Mutual of Omaha's "Wild Kingdom"?

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