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Comments

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The IPv4 Internet Hiccups

marcosdumay IPv6 is much simpler than IPv4 (247 comments)

Really, even if you are completely ignorant about it, it does not take much more than a short reading to see how simpler IPv6 is. That's why it corrects so many issues.

The problem with IPX style local names assignment is in security. Doing it in the open, wild Internet is a certain way to destroy it. The nearest option that's actualy usable is dynamic DNS, and it's quite widspread.

about a week ago
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How long ago did you last assemble a computer?

marcosdumay Re:Performance seems to have plateaued (391 comments)

I just decided to upgrade my 2011 computers, so I got out to searching what improved.

Changed the heat sinks, fans, and casing. Also, changed the power supply of one of them. Nothing else was worth it.

A high resolution display is on my list, but it's still too expensive, so I'm waiting...

about two weeks ago
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Siberian Discovery Suggests Almost All Dinosaurs Were Feathered

marcosdumay Re:Whelp. (139 comments)

What happened to Slashdot lately?

There's a xkcd for that: http://xkcd.com/1104/

about a month ago
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Switching From Microsoft Office To LibreOffice Saves Toulouse 1 Million Euros

marcosdumay Re:administrative operations (296 comments)

"Administrative operations" is everything a governemnt does.

about a month ago
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New Mayhem Malware Targets Linux and UNIX-Like Servers

marcosdumay Re:Derp (168 comments)

What about just not allowing passwords to connect from a network? Is it too simple, or what?

It's simply stupid to prohibit robots from connecting. It means you'll never be able to automate your work. It's also not viable to lock the system, as it'll turn any bot anywhere into a severe DoS attak. And trying to discern intent from behaviour is way too hard a task for a computer.

about a month ago
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The First Person Ever To Die In a Tesla Is a Guy Who Stole One

marcosdumay Re:Unsafe at any speed (above 100 MPH)... (443 comments)

You can't change the referential during calculations. Not on Classical Mechanics, because referentials can not accelerate, and in general relativity things are much more complex. Thus, no, it does not take the same amount of energy to accelerate from 0 to 10mph as it does from 90 to 100mph.

about a month ago
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The First Person Ever To Die In a Tesla Is a Guy Who Stole One

marcosdumay Re:Unsafe at any speed (above 100 MPH)... (443 comments)

What may help you is realising that classical mechanics do not hold for acelerating referentials. And, yes, the added energy varies with the choosen referential.

about a month ago
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The First Person Ever To Die In a Tesla Is a Guy Who Stole One

marcosdumay Re:Unsafe at any speed (above 100 MPH)... (443 comments)

You're not talking a huge difference in speed at that point...

Are you aware that the kinetic energy is proportional to the SQUARE of the speed, right? There is a huge difference in safety - much bigger than between 40MPH and 70MPH.

about a month ago
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The AI Boss That Deploys Hong Kong's Subway Engineers

marcosdumay Re:It's here already? (162 comments)

You know, in a imaginary future where machines outcompete humans in every task, and no job is available for more humans to perform anymore, all those problems you cited just go away.

about a month and a half ago
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Ask Slashdot: Correlation Between Text Editor and Programming Language?

marcosdumay Re: vi, Emacs or IDE (359 comments)

Syntax highlighting? Does that even work in the terminal version?

Yes, it works on the terminal. Autocompletion, and real time compiling also do.

about 2 months ago
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Ask Slashdot: What Would It Take For You To Buy a Smartwatch?

marcosdumay Re:No plans to wear a watch (427 comments)

Nah. Each one of those clocks are showing their own time, that may disagree by minutes or entire hours... I don't use a watch, but only use the computers and telephone clocks.

about 2 months ago
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Ask Slashdot: What Would It Take For You To Buy a Smartwatch?

marcosdumay Re:Only if... (427 comments)

How would a telephone call work on a watch? One can put it near either the mouth or a ear, not both, and in any of those situations, it's quite an unconfortable position.

about 2 months ago
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When will large-scale IPv6 deployment happen?

marcosdumay Re:Not so quick (305 comments)

Thanks for the rerash.

People do use VoIP. And of course people don't use services that break in a NAT, they can't.

about 2 months ago
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Latin America Exhausts IPv4 Addresses

marcosdumay Re:That's what happens when you cry wolf (197 comments)

The problem is worse than that. It's a matter of the media missrepresenting the problem, and people not looking into the details to notice the hype.

I've never seen a technical forecast being delayed, only anticipated. The first one I saw from the working group was working with widespread adoption (like what we have now) of IPv6 by 2020-2025 and IPv4 addresses running out by as late as 2030. The media can't stand having that much time to fix a problem.

about 2 months ago
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Latin America Exhausts IPv4 Addresses

marcosdumay Re:On behalf of all network specialists, (197 comments)

Which won't be for a long while because of all the old computers out there that have either no or insufficient IPv6 support.

Just how old are you estimating those old computers are? Windows XP has support for IPv6, as do the first 2.6 Linux kernel. I doubt there's a single smartphone without support for it.

The only reason we are not using IPv6 all along is because ISPs decided to save some 5% (probably less) of the cost on their last upgrades, or because they actively don't want to supply it.

about 2 months ago
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Servo Stock 3D Printer Brings Closed-Loop Control To Reprap

marcosdumay Re:unnecessary complication (56 comments)

To be fair my (badly constructed?) printer loses precision from vibration much before the stepers have any problem.

Also, all steps that it missed were due to electronic or software problems. Except when the software sent things beyhond the end of the printer, it never lost a step due to physical resistence.

about 3 months ago
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Servo Stock 3D Printer Brings Closed-Loop Control To Reprap

marcosdumay Re:this is cool (56 comments)

Besides, the extruder is the one motor where if you lose a couple of steps, your project won't be ruined.

Wake me up when they get closed loop positioning for the other axys.

about 3 months ago
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The Flaw Lurking In Every Deep Neural Net

marcosdumay Re:Errors (230 comments)

Neural networks are Turing complete analogic copmputers programmed by setting weights within it... Hash algorithms are programs that given an input return an output that is very similar to random, except for the fact that it's completely deterministic.

What kind of semelhance did you see between them?

about 3 months ago
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Microsoft Is Paying Brazilian Users In Skype Credit To Switch to Bing

marcosdumay Re:So... (90 comments)

In a Linux computer the button continues there, but there is a warning bellow it telling that the campaign only applies to Windows computers. When I click the button, it tries to download .exe file, Igot tempted to run it on Wine and see what it does, but setting a VM and etc is too much work :)

There is probably something in the .exe to tell them if you switch back. But I doubt they reclaim the credit, as that would break consumer laws.

about 3 months ago
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Agree or Disagree: We are in another tech bubble.

marcosdumay Re: We bubble long time. (154 comments)

And then people will have always less money to spend on always cheap products...

At the end, everybody will have their $NaN to live.

about 3 months ago

Submissions

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Share of Windows computers falling

marcosdumay marcosdumay writes  |  more than 3 years ago

marcosdumay (620877) writes "PCWorld is reporting that april was a good month for Linux, between the niceties it is reporting that the share of Windows computers is falling, as evidenced by the fact that Windows sales are growing slower than PC sales and that the shares of Wikipedia browsers using Microsoft Windows (all versions) decreased from 85.63 in July 2010 to 81.78 in March of this year. In fact that share is decreasing for longer, from 89.50% at April 2009."
Link to Original Source

Journals

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Free Software and Code Reuse

marcosdumay marcosdumay writes  |  more than 2 years ago

By 2006 I suspected free software developers could make better use of code reuse than proprietary software developers, and with that achieve a much better productivity with time. By then I tought that time had already come, what is clearly wrong, but I've being collecting data since then, and summarized it in an article.

If anybody ever gets here (who reads those journals anyway?), you are invited to read the article.

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Tracking Firefox's memory usage

marcosdumay marcosdumay writes  |  more than 8 years ago

I want to know if the memory bug of Firefox is caused by an extension, and, if so, which one. So, if you have a huge memory usage (100+MB) even after closing all the tabs but one, please leave a comment here telling your usage and which extensions you have.

Also, if you know how to easily copy the extensions list for pasting here, tell me.

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