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Comment: Re:not really (Score 1) 248

by AdamHaun (#46782019) Attached to: SSD-HDD Price Gap Won't Go Away Anytime Soon

The article is talking about enterprise-grade SSDs using data from 2012. As for the performance difference, it seems to be mainly due to the difference between SLC, MLC, and TLC. From page 4:

Even if economic forces are favorable to continuing price reductions of SSDs and NAND flash, a 2012 study by Microsoft Research (PDF) has found that a dilemma arises when trying to increase density and reduce cost of SSDs. The study looked at 45 flash chips from six different manufacturers and found that, as density increases, bit error rate (BER) and performance decrease. This is because the number of ranges of electrical charges necessary to store data on a single cell increase as densities increase.

The researchers found that, as feature size decreases (increasing density), bit error rates increase. While the SLC and MLC chips with cells that had feature sizes of between 80 and 60 nanometers (nm) usually had BERs of 1e-08, those with feature sizes of 40 nm had BERs at or below 1e-07, and the TLC chips with feature sizes of 20 nm had BERs of, at best, 1e-03.

In addition, researchers also found that increasing density also increases read and write latencies. NAND chips with feature sizes above 64nm had read latencies of 20us or less and write latencies of 0.5ms or less, while those with feature sizes of 32nm or less had read latencies between 20us and 60us and write latencies between 0.5ms and 2.5ms.

This leaves SSD and NAND manufacturers with a choice among density, cost, reliability, and performance. In any scenario, at least one of these four must be sacrificed to improve the others. This means that, even if SSDs can achieve cost parity with HDDs, it will be at the expense of reliability, density or performance. In fact, as discussed above, enterprise-grade SSDs already sacrifice write performance, cost and even density to address the threat of reduced reliability and data integrity and have built non-2.5” form factor configurations and added special coding or technologies to meet reliability and performance demands, resulting in more costly products.

[emphasis mine]

More bits per cell requires more precise current sensing, which slows down reads and writes. I suspect parasitic capacitance due to the physical size of the array is also a factor. Performance is also affected by the controller, which may mask some of the bit-level performance differences.

Comment: Re:Over 18 (Score 1) 630

by Phreakiture (#46757017) Attached to: IRS Can Now Seize Your Tax Refund To Pay a Relative's Debt

Actually, a person doesn't inhert this debt. The debt is inherited by the estate. If the estate runs out of assets before the debt is settled, then the rest of the creditors are SOL, but the debt does not pass to the heirs. Mind you, nothing else does, either, but the heirs are not stuck with the debt.

Comment: How is entertainment not useful? (Score 1) 731

by AdamHaun (#46738325) Attached to: Ask Slashdot: Are You Apocalypse-Useful?

But let's talk hypotheticals: if there's a worldwide catastrophe in which civilization is interrupted, somebody specializing in gymel wouldn't provide much use to fellow survivors.

Are you kidding me? Without electronics and industry, all performance arts are live and local. There's no high-quality music on demand from iTunes or YouTube, no recorded music playing at restaurants, parties, or festivals, no constant background music in television and movies. Maybe you can get crappy records made out of wax if you're lucky.

During the day, when most people are doing grunt work, the gymel expert might not be anything special. (Or they might -- people are not solely defined by their profession.) But at night, when everyone's sitting around a fire relaxing? I bet someone who can make strange and beautiful music would be very popular indeed.

Comment: Re:Hulk hogan could code too (Score 1) 578

by Phreakiture (#46728763) Attached to: Michael Bloomberg: You Can't Teach a Coal Miner To Code

Unfortunately, this is true of many art forms. TV has become so much "reality" TV because it is formulaic and easy and cheap to produce because it has no production value. Movies have become very uniform and bland, also, because the "spice" they use is special effects rather than writing a decent story, because it is cheaper and easier to do. Music is not "performed" an more, but "produced" by stringing together bits of this and pieces of that, then "normalizing" it by compressing the living shit out of the dynamics to the point where you can easily hear the whole sound go "squish" on every beat of the thing that used to be a kick drum. And so it goes.

The good news is that every now and then, some market niche will buck the trend . . . going to see a local band play live . . . buying bread that came from a bakery rather than a factory . . . seeing an independent film that was produced by an artist and not subject to the whims of a studio exec . . . but these niches are just that, and not enough to reverse the trend, at least, not yet.

Comment: Re:Hulk hogan could code too (Score 5, Insightful) 578

by Phreakiture (#46728669) Attached to: Michael Bloomberg: You Can't Teach a Coal Miner To Code

Anyone working as a coal miner is so far past the "I'm willing to do jobs that suck" threshold that it has vanished over the horizon.

Yep, but so, sometimes is the "Jobs that are available, that I can get to" threshold. I know a lot of people who are stuck in this type of mess because:

  • They were born in East Bumfuck, and
  • They were born poor because they live in East Bumfuck, and
  • They have no transportation because they are poor and
  • They can't commute far because they have no transportation and
  • The only job they can find that is within walking/biking/bumming a ride distance is the one they got.

Pay close attention to that bumming a ride distance. If you are dependent on another family member for a lift to work, and you are poor, you know that one car that works (not counting the ones parked on the lawn) will break because they're poor and can't maintain it well. You're not going to go anywhere that that family member doesn't deem, and so, there you sit, another generation festering in the rot that is East Bumfuck

I know it first hand because these folks are my in-laws. Some of them have escaped (very few, my wife being one), and some of them are going to, but mostly the opportunities just aren't there.

Comment: Re:Submarine cable map (Score 1) 56

by AdamHaun (#46665295) Attached to: Oxford Internet Institute Creates Internet "Tube" Map

That map is so much better and more informative than the tube map that I don't know why the latter exists at all. I know it's supposed to be a simplification, but if you condense that many cables into one route you end up with a map of countries that border the sea, not network routes. For example, there's nothing on the tube map to indicate that the UK is only one or two hops from Japan, or that the Seychelles are at the end of a line, even though it's clearly visible in both your map and the tube map's questionably accurate source material.

Comment: Re:I think this is bullshit (Score 1) 1746

by AdamHaun (#46657691) Attached to: Brendan Eich Steps Down As Mozilla CEO

At the state level yes... but was overturned later... what's your point?

Five years after it was passed, yes. And the Supreme Court case was resolved on a technicality about Article III standing.

If you bothered to do any research, you'd know that same sex couples who were already married prior to Prop 8 being passed were grandfathered in... so there was no legal limbo, they were married before it passed and married after it passed.

No, they most certainly were not. The full text of Prop 8 was:

Section I. Title
This measure shall be known and may be cited as the "California Marriage Protection Act."
Section 2. Article I. Section 7.5 is added to the California Constitution, to read:
Sec. 7.5. Only marriage between a man and a woman is valid or recognized in California.

There is no grandfather clause in there. The California Supreme Court did the grandfathering the year after Prop 8 passed. And the same sort of people Brendan Eich donated money to showed up to defend Prop 8 there, too.

This was not a small thing for the people affected by it, nor were the resulting court trials insignificant. If you'd like to understand this better, I recommend reading the transcripts of Perry v. Schwarzenegger.

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