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User: amorsen

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  1. Re:Why ODF? on UK Cabinet Office Adopts ODF As Exclusive Standard For Sharable Documents · · Score: 1

    ASCII is a subset of UTF-8-encoded Unicode. If you do not use anything beyond ASCII in your document, the unzipped file will only contain ASCII. If you put Korean characters into your document (and you do not have to change font to do so, if you are using a decent font), the unzipped file will contain non-ASCII characters. In both cases, the file will be a valid UTF-8-encoded Unicode XML document.

  2. Re:But Moonshot is years old on HP Claims Their Moonshot System is a 'New Style of IT' (Video) · · Score: 1

    www.hp.com is fully moonshot-powered

    That would explain why the HP site is so ridiculously slow. Except that it has been slow for years, but maybe they were always running it on prototypes.

  3. Re: Failsafe? on Airbus Patents Windowless Cockpit That Would Increase Pilots' Field of View · · Score: 1

    If the system is down so far as needing that, then it's already crashing i'd suspect. There are no parachutes as a failsafe either.

    I give you SAS flight 751. Both engines out, no power to the instruments. "Landed" using the windows and a mechanical artificial horizon. No fatalities (but a few severe injuries, unfortunately).

  4. An autoconfig ipv6 address is the mac with some static bits shoved on.

    Not anymore. Practically everyone implements the privacy extensions, and most do not generate a MAC-based IPv6 address at all.

  5. Re:Classic $Politician on White House May Name Patent Reform Opponent As New Head of Patent Office · · Score: 1

    It's great that you foresaw it all. That does not really have anything to do with what I wrote.

  6. Re:Classic $Politician on White House May Name Patent Reform Opponent As New Head of Patent Office · · Score: 4, Insightful

    Obama seems to be the first mainstream US presidential candidate in a long time to "talk the talk" to the kind of people who read Slashdot. The others have been spouting ignorant crap or simply ignoring the topics that most Slashdotters care about. Therefore Obama is the first president that we can be disappointed in -- the others were known bad before they became presidents.

  7. Re:You don't know... on Are the Hard-to-Exploit Bugs In LZO Compression Algorithm Just Hype? · · Score: 2

    File system drivers in general are not properly security vetted. You can do interesting stuff to a Linux box if you put ext4 on a fake device and start messing with what is on the disk while it is being read. Many device drivers have similar problems; you could find a Linux device driver with a problem and make a fake piece of hardware resembling the real thing while exploiting the bug.

    This is pretty much unfixable. While most core OS code is of a high quality these days, there is just too much driver code around. A proper audit is infeasible.

    Besides, Thunderbolt makes it pointless. With Thunderbolt, you do not need to exploit anything, the bus provides you with unlimited access.

    It is a sad state of affairs really.

  8. Re:waste of time on New Chemical Process Could Make Ammonia a Practical Car Fuel · · Score: 1

    100% electric cars with electrical-output-only generators have been proven to get unbelievable gas mileage and range in Europe so that's not a bad idea.

    Name one. E.g. the BMW i3 has absolutely horrendously bad mileage on gas, and practically everything else is a parallel hybrid, not a serial.

  9. Re:The OpenSSL Disasters were a result of attitude on Russia Wants To Replace US Computer Chips With Local Processors · · Score: 1

    "Memory allocation is too important to leave to the programmer" vs. "memory allocation is too important to leave to the system". Also, emacs vs. vi.

  10. Re:Higher capacity for smaller roofs on Elon Musk's Solar City Is Ramping Up Solar Panel Production · · Score: 1

    No. They would not. Concentrated solar is only useful on clear days. It is not a serious option in most of Europe.

    Plain old solar voltaic works fine on cloudy days.

    Also, it is "Stirling".

  11. Re:If generic and common behavior patents are... on Chinese Gov't Reveals Microsoft's Secret List of Android-Killer Patents · · Score: 1

    Do you really want to lie in court? When the opposition can subpoena your firewall logs and browser cache?

  12. Re:Units! on Samsung Debuts Thin Galaxy Tab S With Super AMOLED 2560X1600 Display · · Score: 1

    Ha, you included UK in solidly metric. The UK has basically failed to switch. Only fuel is measured in metric units. Well ok, milk is sold in 568ml containers that do not say "pint" anywhere, but everyone says pint.

  13. Re:What a great idea! on Musk Will Open Up Tesla Supercharger Patents To Spur Development · · Score: 1

    Right, so your assumption is that petrol engines are more efficient at partial load than diesel engines. This assumption is wrong, diesel suffers less from partial load.

    Gearing for 1500-2000RPM means that each gear is 4/3 as high as the previous, which means that a 6-speed box with a first-gear speed of 10km/h at 750RPM will hit 110km/h at 2000RPM. Add an seventh and you are golden; once you hit 150km/h you will need to go beyond 2000RPM to have enough power anyway.

    Typical parallel hybrids have continuously variable transmissions. They always run at the most efficient RPM for the needed power, just like serial hybrids.

  14. Re:What a great idea! on Musk Will Open Up Tesla Supercharger Patents To Spur Development · · Score: 1

    You are still trying to talk around the fact that diesel engines in traditional cars are not even 50% more efficient than petrol engines, combined with the fact that diesel engines benefit less from hybrid drive than petrol engines. Therefore diesel hybrids will not be 50% more efficient than petrol hybrids.

    Serial hybrids look decidedly pitiful so far, the BMW i3 does something like 7l/100km on petrol.

  15. Re:40G ethernet on Red Hat Enterprise Linux 7 Released · · Score: 1

    RHEL 6.5 supports at least one 40Gbps ethernet driver (Mellanox). I have no idea whether it can achieve 40Gbps in practice, but it can certainly connect to a 40Gbps switch.

  16. Re:Good and bad... on Red Hat Enterprise Linux 7 Released · · Score: 2

    init IS supposed to know whether services are running and restart them if they fail or exit. It used to do that way back when; you would edit /etc/inittab to specify what runs at which runlevel. Unfortunately /etc/inittab was sufficiently crap that all sorts of things were pushed into shell scripts instead, which lost the the ability to recover from failed services. Then you could install Monit and edit those shell scripts to get that ability back, but every time you upgrade you have to check whether your edits survived. Not nice.

    A replacement for init was sorely needed.

  17. Re:What a great idea! on Musk Will Open Up Tesla Supercharger Patents To Spur Development · · Score: 1

    Fair enough. Wikipedia provides no citations for that number, and I have had zero luck finding actual published studies, which is actually a bit weird.

    However, conventional diesel cars are nowhere near twice as efficient as petrol cars. I do not understand why that changes with the addition of a hybrid drive system -- the hybrid drive system should improve the efficiency of a petrol car comparatively more. E.g. look at spritmonitor.de, top diesel performer (after the special models VW Lupo 3L and Audi A2 3L which do not have equivalent petrol cars) is the Citroen C1: 4.2 l/100km on diesel, 5.2 l/100km on petrol. Less than 25% improvement, and half of that is just because diesel is heavier.

    Anyway, I will be convinced when someone builds a small diesel range extender. I won't be holding my breath.

  18. Re:What a great idea! on Musk Will Open Up Tesla Supercharger Patents To Spur Development · · Score: 1

    That is great when you are building a ship engine for Emma Mærsk. Now build a 30kW diesel range extender and get 40% efficiency out of that. Good luck.

  19. Re: I want to see where this goes on Netflix Trash-Talks Verizon's Network; Verizon Threatens To Sue · · Score: 1

    Settlement free peering has required balanced traffic ratios since the beginning of the internet.

    Verizon does not offer balanced traffic ratios. They should be paying Netflix for the imbalance. Yet somehow it gets twisted so that Netflix has to pay.

  20. Re:What a great idea! on Musk Will Open Up Tesla Supercharger Patents To Spur Development · · Score: 1

    Locomotives are diesel electric because you cannot make a mechanical power train which get a freight train rolling. You need something with near-infinite torque like an electric motor or a steam engine. And yes, diesel has more energy, partially because it is heavier and partially because C turns into CO2 whereas you need two H per O. More carbon atoms mean higher CO2 emissions of course.

  21. Re:What a great idea! on Musk Will Open Up Tesla Supercharger Patents To Spur Development · · Score: 1

    Small diesel engines are not inherently more efficient than petrol engines. They just perform a lot better in practice because they do not suffer so much from partial load. Making a petrol hybrid makes sense because petrol engines hate to run at anything but full load and you solve the lack of torque at the low end. Making a diesel hybrid does not make nearly as much sense since diesel is reasonably efficient at partial load and provides a more acceptable amount of low-end torque.

    Diesel engines are large, heavy, and expensive which means less room, mass, and money for batteries.

  22. Re:I want to see where this goes on Netflix Trash-Talks Verizon's Network; Verizon Threatens To Sue · · Score: 1

    The cache does no good if both Netflix and the ISPs do not have reciprocal peering agreements. Also, there are a lot of problems with these agreements.

    That makes no sense. As soon as you ask Netflix for the cache, Netflix will steer traffic coming from your customers to the cache, and the cache will do good.

    You still need the bandwidth to download each movie once of course.

  23. Re:I want to see where this goes on Netflix Trash-Talks Verizon's Network; Verizon Threatens To Sue · · Score: 1

    Really, you can serve millions of Verizon DSL and hundreds of thousands of FIOS customers with one caching box? That only uses a few ports, RUs, and a few hundred watts of power? At approximately zero cost?

    Economies of scale only makes it better. Yes, you need more than one box for hundreds of thousands of customers, but it is still the cheapest way to get any kind of bandwidth. The cost is completely trivial when you are Verizon-size.

    Can I have free co-location services at the local central office too, or do I have to get to Netflix size before that happens?

    You have to get to Netflix size. Small players pay for everything.

  24. Re:I want to see where this goes on Netflix Trash-Talks Verizon's Network; Verizon Threatens To Sue · · Score: 2

    So when Netflix switches peers they leave the ISP with a 10gig trunk to AT&T that's now severely underutilized.

    If the ISP is concerned about this, they can just ask Netflix for a caching box. Total cost to the ISP is a couple of ports in a switch, a few rack units, and power. I.e. approximately zero.

  25. Re:That's why IPMI should only live on intranets. on IPMI Protocol Vulnerabilities Have Long Shelf Life · · Score: 1

    The problem is that it doesn't help unless you implement security on your switches as well (private VLAN or similar). One compromised server can take over the IPMI interface and transmit on the isolated network. This is supposed to be impossible; the host is not supposed to be able to use the IPMI interface to source traffic (assuming it has been assigned a dedicated interface and not shared of course). Unfortunately it is not impossible in practice.