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Navy Guilty of Illegally Broad Online Searches: Child Porn Conviction Overturned

Mirar gnutella... (286 comments)

...I didn't know you could hand-pick the computers you searched on gnutella. Isn't it a p2p search-tree (or a broadcast) that you can't limit to any geographic area or ip range other than filtering the end-results?

4 days ago

The State of ZFS On Linux

Mirar Re:No defrag! (366 comments)

is this something I should think of for the mysql databases?

about a week ago

The State of ZFS On Linux

Mirar well.. (366 comments)

I tried to run backups to ZFS on a crypted USB disk. It worked for a while, but if something fails (like the backup disk going to sleep), the entire chain hangs. I can't disconnect the crypt device, and I can't disconnect the ZFS pool, zpool and zfs hangs. What I do with the USB cable and hardware no longer has any impact. I stopped doing that. (I didn't have better luck with btrfs.) Although I don't really blame ZFS that much other than it can't handle hanged devices. USB on Linux is still flaky.

The other problem I have is that it after a while happily uses up 30GB of my 32GB on the computer, and extremely reluctantly gives them away again. I can't seem to be able to control how much ZFS will use. And the rest of the system isn't really happy with just 2GB to run programs in (several virtual machines of 8GB RAM each, for instance).

about a week ago

The State of ZFS On Linux

Mirar Re:Unfamiliar (366 comments)

The big difference from raid+filesystem to zfs or brtfs is that the new ones have a checksum on the raid blocks.
That means that if you get bit errors (or more than bit errors) on one of the blocks on the raid, you can rebuild that block from the others.

WIth a normal RAID there is no way of telling which bit is wrong, just that the blocks don't match up anymore. You're protected against one disk failing, but not the random errors.

You can also add deduplication, compression and snapshots if you want. Don't know how LVM+raid works with that.

about a week ago

Canada Tops List of Most Science-Literate Countries

Mirar survey? (221 comments)

I can't find the original survey. Anyone that was able to dig it up?
How did the other 34 countries do?

about three weeks ago

New EU Rules Will Limit Vacuum Cleaners To 1600W

Mirar so 1h every 10 day per citizen (338 comments)

Denmark uses about 34TWh/year. EU has about 500M citizen. A vacuum cleaner is using about 2kW.
That gives about 30 vacuum-hours per year per citizen, or about 1h per 10 days (rounding in different directions).

Seems remarkably reasonable.

I don't understand the meddling of capping the power though. Just make sure everything needs to be marked with how much !/W you get from the items. I'm sure most consumers are interested in the actual work performed by the vacuum, not how much you put in. But the sellers are of course interested in hiding it.

(. Soon they will cap your hifi at 40W and tapwater taps at 1dl/minute. .)

about a month ago

Driverless Buses Ruled Out For London, For Now

Mirar Re:Driverless trains (84 comments)

I find this the most interesting comment in the thread so far. I was wondering, how are driverless buses within 4 _decades_ unlikely?

Of course they are unlikely, because the union will stop them.

about a month and a half ago

Quiet Cooling With a Copper Foam Heatsink

Mirar Re:What are you running? (171 comments)

My heatsink losened from my laptop (MSI GT683R, i7-2630QM?), one of the nuts that was supposed to be soldered to the board stopped being soldered to the board. I couldn't figure out why it was throttling.

  It was throttling at 95C and hit temperatures up to 102C.

Gaming on it gave a full framerate for 10-15 seconds, then no frames for about 5 seconds, repeat. Still runs fine now after resoldering the nut to the board. And it never turned off, just throttled down to 200MHz or so and cooled down.

(If I remember correct my P4 happily ran at 85C too. But I might misremember. After that my stationaries have been watercooled and it's hard to get them over 55C.)

about 2 months ago

Quiet Cooling With a Copper Foam Heatsink

Mirar Re:I am skeptical (171 comments)

But with the foam you would use a lot less copper, at least. It'll be cheaper (if it has the same production cost). Not sure how to produce metal foam, though?

Foam has another drawback: Isn't it tricky to transport the heat all the way to the actual airflow, given the thin filaments and probably longer distances?

about 2 months ago

Nasty Business: How To Drain Competitors' Google AdWords Budgets

Mirar Only if it's in google's interest to block this (97 comments)

...only if it's in Google's interest to block services like this instead of asking the victim to pay more money.

about 2 months ago
top Thinks Depictions of Pi Are Protected Intellectual Property

Mirar Re:Prior Art Exists. (264 comments)

Quick, someone inform the churches. There's lots of money in this.

about 4 months ago
top Thinks Depictions of Pi Are Protected Intellectual Property

Mirar Re:damn (264 comments)

EU actually have comparably working IP laws. And we point and laugh at your problems.

That is, unless they get something like ACTA through EU parliament. Then we'll have it too.

about 4 months ago

Has the Ethanol Threat Manifested In the US?

Mirar ethanol has less energy per volume (432 comments)

It's not too strange to get worse mileage with ethanol, considering the energy content is less than gasoline.

Diesel has the highest energy content of the three.

Pure diesel or pure ethanol is easiest to optimize the engines for, since the fuel itself is rather pure, so theoretically you could get better mileage that way. Gasoline can vary a lot and is more of a mix of things.

about 4 months ago

Apple's Revenge: iMessage Might Eat Your Texts If You Switch To Android

Mirar not even XMPP (415 comments)

I have multiple devices, my friends have multiple devices.

There's no chat that works from multiple devices to multiple devices reliably. Which confuses me.

Traditional chats only works from one device to another device. There's no server sharing of information.

XMPP goes to only one device once that device has replied. That means that if the receiver is switching devices (goes from PC to phone to leave the house), messages might be lost and there's no history on the phone.

Message carbons tries to solve this - I think - but few clients support it, and even when it works, it doesn't solve the lock problem when leaving the house.

Google Talk is worse, instead of doing a handover to another device it steals the messages and sends you a Google Mail. Yay?

But this (the topic), I think, is one step worse.

about 4 months ago

Ask Slashdot: Minimum Programming Competence In Order To Get a Job?

Mirar levels? (466 comments)

What levels are we talking about?

If I could just pick any, I'd set someone who can write a tail-recursive strncpy in C on a whiteboard (and discuss the quirk) without any help at 2/10, and someone that can write/discuss a hardware UART driver or give me an idea of a posix-compatible SNMP SetRequest routine without any help at 8/10. Anyone who has implemented a HTTP server (without using a HTTP server library) in any language would score at least 5/10.

I think lots of programmers that score 2/10 can get work.

What are your 2/10 and 7/10? It's probably not my 2/10.

Or is there an official scale and my google-fu didn't find it?

about 4 months ago

Ask Slashdot: Minimum Programming Competence In Order To Get a Job?

Mirar Re:Average (466 comments)

It took me a while to realize you didn't mean a quarter of an hour.

A big car corporation - no names - I used to work at had an average speed of 2 lines per hour and team member.

about 4 months ago


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