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Comment: Re:These are griefers, not trolls. Trolling is fun (Score 1) 116

If somebody is truly upset, however, I would not, could not, continue to deride them. So that's where the fine line may be drawn.

Oh dear... then you missed the utter ecstatic joy of viciously trolling a moderator until he quit his job, while pissing off the whole community who praise him as one of the best ever.

Err... wait... did I misssed the anonymous toggle ?

Comment: HFT = a cost to society (Score 4, Informative) 342

by advid.net (#46683575) Attached to: Australia May 'Pause' Trades To Tackle High-Frequency Trading

What really annoy me with HFT, besides not being "fair", it that it as a cost and that the society doesn't benefit from it.

Building a stock exchange with top-notch computers if fine, since there is a need fulfilled here for our society.

But building new warehouses as close as possible to stock exchange computers to house top speed fiber connected computers, just to lower the delays from 600ms down to 10ms or so, to allow HFT, is a waste of resources.
No one needs that, it's just a smart way to build a sucking vampire over information systems. And this cost is always somehow reflected to society.

One big bank of my country paid a lot to move all its crucial infrastructure abroad, in such new buildings, to be able to compete in HFT.
Who's paying for those efforts? The company, the bank, instead of doing something more useful to society (investments to improve their services, etc).

Comment: Re:Proxy encampment and pre-lane spools (Score 1) 273

by advid.net (#46668131) Attached to: Algorithm Challenge: Burning Man Vehicle Exodus

The main question I had upon reading this, is whether there is space for the buffer parks.

You may have a look to aerial views of the event: there is plenty of space in the desert. However I don't know if they are limited by law or regulations.

This idea is indeed a mitigation, you perfectly understood my point.

Comment: Short story: See to what Linus responds (Score 5, Informative) 641

by advid.net (#46661671) Attached to: Linus Torvalds Suspends Key Linux Developer

The message to which Linus responds is also interesting:

Short story:

The systemd guy uses the debug keyword on kernel command line to spool a huge log - which can hang the boot process, and that is the problem.
Then the same guy claims that the debug keyword is generic so it can't be reserved by the kernel, even if it's been used first by it since a long time...

I can say that Linus is right there, for sure. He's maybe too kind...

Comment: Proxy encampment and pre-lane spools (Score 1) 273

by advid.net (#46661443) Attached to: Algorithm Challenge: Burning Man Vehicle Exodus

I think I have a better idea, since the problem is to wait in the queue for hours:

- Just one lane, with a known 1000 vehicles/hour limit.

- Have 3 or 4 "small" buffer parks (500 vehicles each) to wait with better conditions than in the main waiting line.

- Note: each vehicle in a proxy encampment has left its own main camp, so everything is packed, done, the driver has the key, etc.

- Every 30 mn, give the go for the next batch, so they start queueing, if someone stays the park (lost key or driver somewhere else), he will be soon surrounded by the new vehicle pool and will have to wait for the next round.

This way we have :

- one short main waiting line on exit

- 3 or 4 small dedicated parks next to main exit (worth 2 hours of line feed), people ready, waiting in better conditions than in lane. They know precisely when they will be going in the main line.

- the main camp, people getting ready, waiting for a proxy park to be freed.

If some people are willing to queue for more than the total pool time, let them fill a new proxy park and wait there.

Comment: Pro/Desktop and Internet 3D printing: Success ! (Score 1) 251

by advid.net (#46574361) Attached to: 3D Printing: Have You Taken the Plunge Yet? Planning To?

I've successfuly designed a few parts (parametric) with Pro/Desktop Express (outdated software but the best I've used so far).

I've successfuly printed those parts at Shapeways.

The nylon powder is fused by laser. Parts are thin and quite stiff. Good point. This kind of making is really not affordable for hobbyists.
The metal printing is okay, strong but I noticed a slight deformation. Good enough for jewelry.

I'm not looking in buying any 3D printer. Parts won't have the same quality as the one printed by SLS and I don't need to print that much cheap parts.

Comment: Re:Please post Tape backup ref (Score 1) 983

by advid.net (#46471489) Attached to: How Do You Backup 20TB of Data?
Here is what I've found, here (my emphasisi):

First step in LTO-6 (native 3.2TB, 210MB/s) was made in June 2011 when the three technology providers announced the availability of licenses for this format. But later these specs were reduced to only native 2.5TB (+67% compared to LTO-5) and 160MB/s (a mere +15%). Generally, the capacity of the LTO tape follows current highest capacity of HDD. But it's now 4TB uncompressed and LTO-7 is supposed to be native 6.4TB (and 315MB/s) and will be there probably in at least two years.

So it looks like LTO-6 would backup 4TB uncompressed, pushing the original standard a little bit (no pun intended).

"Regardless of the legal speed limit, your Buick must be operated at speeds faster than 85 MPH (140kph)." -- 1987 Buick Grand National owners manual.

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