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Comment: "Do one thing well" and pipes aren't the same (Score 2) 385

by davecb (#47930861) Attached to: Torvalds: No Opinion On Systemd

"Do one thing well" is how Unix kernel functions are written, and it's just plain a good idea. Systemd probably follows the first principle internally, many programs do.

Creating production systems[1] out of single-purpose commands connected by pipelines is a different principle, and only works if you keep them pretty simple. It's not a prionciple, but it is how a lot of Unix scripts are written, NOT including the shell that glues the parts together, and not including all the more complex programs, like ed or mail. Systemd doesn't follow the second, because it's more like ed than a text transformation like spell.

A more useful question is whether systemd as a whole does one thing, and does it well. About that, one might usefully discuss whether the Unix principle applies.

--dave
[Pipelines were patterned after a subset of "production systems" in early AI, which applied transforms to "produce" new things. They're not the kind of production systems you put on a raised floor]

Comment: Re:It doesn't scale (Score 1) 129

by davecb (#47929427) Attached to: FBI Completes New Face Recognition System

You can have 99.999 accuracy, and if the number of comparisons is (N choose 2), then the probability is (N chose 2) * 0.00001, which will be (really huge number * 0.00001) which is (merely huge number).

I don't care how good or bad the implementation is, it has to have more 9's to the right of the decimal than I have zeroes to the left in the number of people, N. That's a known hard problem in computer science (;-))

--dave
[And yes, Siemens was getting crappy even then, but that isn't the problem that the FBI has to solve]

Comment: It doesn't scale (Score 1) 129

by davecb (#47926777) Attached to: FBI Completes New Face Recognition System

We do this in Canada too, and it works where the number of people you're trying to recognize is small. The "birthday paradox"* says that if you're comparing 23 people, you have a 50% chance of a match. You have to multiply this by the error rate (usually much less than 2%) of a facial match program to get the false-positive rate, but it's still huge.

The German federal security service tried out Siemen's facial matcher years ago, found it had a low error rate... and was completely useless!

When you had hundreds of criminals to look for in thousands of airport passengers a day, it was directing insane numbers of people to the "capture the terrorist" queue (;-))

--dave
[*https://en.wikipedia.org/wiki/Birthday_problem]

Comment: Re:Force of Law (Score 1) 355

by davecb (#47773045) Attached to: Ask Slashdot: What To Do About Repeated Internet Overbilling?
Engage a lawyer familiar with class actions *before* speaking to the police. You're an individual engaging in trial by battle with a huge company, and you need someone with the same degree of hitting power on your side before you start. They can advise on what's most effective in your jurisdiction. In Canada, the fraud squad is effective against enemies of moderate size. I don't see case law from them going after companies the size of a small country (;-))

Comment: Re:Linux Cgroups are a good subset of this (Score 3, Informative) 161

by davecb (#47495245) Attached to: Linux Needs Resource Management For Complex Workloads
The only thing mainframes have that Unix/Linux Resource Managers lack is "goal mode". I can't set a TPS target and have resources automatically allocated to stay at or above the target. I *can* create minimum guarantees for CPU, memory and I/O bandwidth on Linux, BSD and the Unixes. I just have to manage the performance myself, by changing the minimums.
Data Storage

Linux Needs Resource Management For Complex Workloads 161

Posted by Soulskill
from the dirty-job-but-somebody's-gotta-do-it dept.
storagedude writes: Resource management and allocation for complex workloads has been a need for some time in open systems, but no one has ever followed through on making open systems look and behave like an IBM mainframe, writes Henry Newman at Enterprise Storage Forum. Throwing more hardware at the problem is a costly solution that won't work forever, he notes.

Newman writes: "With next-generation technology like non-volatile memories and PCIe SSDs, there are going to be more resources in addition to the CPU that need to be scheduled to make sure everything fits in memory and does not overflow. I think the time has come for Linux – and likely other operating systems – to develop a more robust framework that can address the needs of future hardware and meet the requirements for scheduling resources. This framework is not going to be easy to develop, but it is needed by everything from databases and MapReduce to simple web queries."

Comment: Re:Maybe, maybe not. (Score 4, Informative) 749

by davecb (#47453241) Attached to: Obama Administration Says the World's Servers Are Ours

The criteria is "the company that has the power to demand the data, has to do so if ordered by their country's courts". This probably dates back to the 16th century or earlier. Some time around the Hanseatic League...

A Canadian company with data in Outer Mongolia has to produce the data if it can. If the Outer Mongols prohibit the Canadian company from demanding it normally, the Canadians can't be ordered to produce it, because the data isn't in the Canadian company's control. If they allow it to be demanded normally, a Canadian court can get it. They have to do it via the Mongolian branch, they can't just issue court orders in Mongolia.

Your suspicion is correct: a Canadian company that controls data in the U.S. can indeed be ordered by a Canadian court to produce it .

--dave

Comment: Re:Stop throwing good money after bad. (Score 1) 364

by davecb (#47423377) Attached to: The Pentagon's $399 Billion Plane To Nowhere
Canada's government of the day is using it as a money-sink. Our requirements are for a twin-engine, long-range, non-stealthy aircraft with a moderate ground-support capability, such as the F-18 Hornet we now use. They rejected the newer super hornet, and so I fear the entire programme exists only to soak up money they don't want to spend on the priorities of the other parties...

+ - Canadian Supreme Court Delivers Huge Win For Internet Privacy->

Submitted by Anonymous Coward
An anonymous reader writes "For the past several months, many Canadians have been debating privacy reform, with the government moving forward on two bills involving Internet surveillance and expanded voluntary, warrantless disclosure of personal information. Today, the Supreme Court of Canada entered the debate and completely changed the discussion, issuing its long-awaited R. v. Spencer decision, which examined the legality of voluntary warrantless disclosure of basic subscriber information to law enforcement. Michael Geist summarizes the findings, noting that the unanimous decision included a strong endorsement of Internet privacy, emphasizing the privacy importance of subscriber information, the right to anonymity, and the need for police to obtain a warrant for subscriber information except in exigent circumstances or under a reasonable law."
Link to Original Source
United States

Did Russia Trick Snowden Into Going To Moscow? 346

Posted by samzenpus
from the can-we-give-you-a-ride? dept.
An anonymous reader writes "Ex-KGB Major Boris Karpichko says that spies from Russia's SVR intelligence service, posing as diplomats in Hong Kong, convinced Snowden to fly to Moscow last June. 'It was a trick and he fell for it,' Karpichko, who reached the rank of Major as a member of the KGB's prestigious Second Directorate while specializing in counter-intelligence, told Nelson. 'Now the Russians are extracting all the intelligence he possesses.'"

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