Domain: forret.com
Stories and comments across the archive that link to forret.com.
Comments · 17
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Re:And the winners are...
Why didn't you just refer to the LHC web page and imply that you are writing at that same data rate to a single SSD...it would have exactly the same value as an argument.
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Re: And the winners are...
100TB a day? Roughly 1.2GB per second? No. No you won't.
Yes. Yes I will! Any other questions?
Um, sir? Yes, um, I have a question...what sort of device can I stick in my computer that will write data at 1.2 GB/sec?
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Re: And the winners are...
100TB a day? Roughly 1.2GB per second? No. No you won't.
Yes. Yes I will! Any other questions?
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Re:And the winners are...
See for yourself. Sure, that's high end now, but in the future? Anyway, there you go, ten days (so sue me) will eat a little more than a petabyte. So now I would have to stripe 10 or 20 of these SSDs to hold it all. Now what will my failure rate be?
On the other hand I still prefer SSDs over all the monkey motion going on in a hard drive. I'm just pointing out that a petabyte doesn't mean much anymore. And I still remember having a 20 meg drive and thinking I'll never use it all.
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ST3: Keep Spock Dead. SW4: Han Shot First.
ROT-13: Tnyyvserl Oheaf.
Quit REWRITING "History" .... damnit!
Last EP of Newhart: ... ended with a scene in which Newhart wakes up in bed with Suzanne Pleshette, who had played Emily, his wife from The Bob Newhart Show. He realizes (in a satire of a famous plot element in the television series Dallas a few years earlier) that the entire eight-year Newhart series had been a single nightmare of Dr. Bob Hartley's, provoked by "eating too much Japanese food before going to bed." -
ST3: Keep Spock Dead. SW4: Han Shot First.
ROT-13: Tnyyvserl Oheaf.
Quit REWRITING "History" .... damnit!
Last EP of Newhart: ... ended with a scene in which Newhart wakes up in bed with Suzanne Pleshette, who had played Emily, his wife from The Bob Newhart Show. He realizes (in a satire of a famous plot element in the television series Dallas a few years earlier) that the entire eight-year Newhart series had been a single nightmare of Dr. Bob Hartley's, provoked by "eating too much Japanese food before going to bed." -
Bandwidth used is 4k video
Wondering about the 500M per sec?
Take a look a the numbers for 4k video.
Now, be sure to keep in mind that on such an aircraft, there is at least one visual light spectrum camera, and at least one high resolution thermal camera.
If I were the one laying out the specs for this bird, I might want to look a direction other than just facing forward. Maybe a couple of cameras? The 500Mb or 500MB doesn't seem unreasonable when trying to pull all that data from the aircraft real-time; even compressed.
The telemetry data is small by comparison, but what is the refresh rate of said telemetry data? 30Hz? 50Hz? And, how much telmetry data is being sent? Keep in mind all the other data...even including the most basic lat/long, heading, airspeed (IAS via multiple pitot tubes), engine data (temperatures at different points, fuel flows, pressures, etc).
Here is a photo of the flightdeck/cockpit of a Boeing 777. Check out the cockpit of a C130 at night. Now, if instead of pushing all those sensor systems to a flightdeck on board, what if all that data has to be sent to the other side of the world?
Another [maybe flamebait] commenter suggested that the drone pilots operate in theater. From what I have read, the Airforce pilots the drones from Las Vegas; "just minutes from the slot machines."
<rant> What makes so many slashdoters completely underestimate the complexity of such a system? The average
/. crowd these days seem to be quite egotistical to assume that they could "do it better". </rant> -
Re:Who would use this?
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Re:One can dream...
This post is encrypted twice with ROT-13. Documenting or attempting to crack this encryption is illegal.
It's pretty clear that you missed the joke somewhere along the way. You probably outta change your sigline just so you aren't announcing to the world how badly you aren't a programmer, cryptographer, or technologically savvy. In the meantime, here's a website that you can use to try to understand just what ROT-13 encryption is.
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Re:great
Jung qvq lbh fnl? V pbhyqa'g ernq vg guebhtu gur rapelcgvba
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Re:AJAX
Check this out
... http://web.forret.com/tools/megapixel.asp?width=3464&height=3464okay, so it isn't 25, it is 18MB (RAW). I would consider 7MB PNG to be overkill as well. Scale down, crop, and you can easily get it under 250k or even smaller.
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Re:Why not just use Ethernet?
And you pulled that 16 gigabit/sec number out of your ass. Or maybe your definition of "HD video at high frame rates" is ~325 frames per second?
"unreliable communications over 500 meter"
...and this is a problem how?"using a shared-channel"
...and this is a problem how?"with LOTS of overhead"
yeah 1.3% overhead is "HUGE" using IP w/ standard 1.5k MTU (which could probably be raised even larger, especially when the devices are directly connected)"and very high computational requirements"
no. and compared to what really? if the protocol designers would be idiots and use TCP then yes. -
Alll time best (for me) ....
For me, black text on a wheat background (#F5DEB3 or #EEDDBB -- "original" and "web safe" according to this).
I find it has sufficient contrast to make the text visible, and not so much as to hurt the eyes.
Used it on xterms and the like for well over a decade.
Cheers
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The monopoly breakup history is very simple...
You of course already know how a monopoly is broken because it happens so frequently. Y'know, cuz like... it's always in the news that our government breaks monothic companies like Microsoft or Halliburton into pieces to foster competition, create free markets, and promote options for the consumer.
Regardless, here is a handy chart to illustrate how Ma Bell was broken up in '84 and what has happened since. Stephen Colbert broke it down nicely here, although that link has been removed do to copyright claims by Viacom, one of our six global media conglomerates.
Thank goodness you can still watch it in Canada.
Of all the AT&T derivatives... we know Qwest didn't spy on us. So that's one.
W
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real numbers
It looks like major players are paying $10 USD / Mbps for backbone access.[1] (Yes that paper predicts a short term backbone supply problem.) In my case, that's actually the same rate I'm paying my ISP for 2.5 Mbps. And from the sounds of it, Americans get gouged a lot worse.
Next, I max out at 60 gigs of video in a month (and that means I would have spent all my spare time watching high-quality p2p movies and television and also downloaded a few entire seasons of tv shows and then decided not to watch them, or saved them for later) which averages to 185.19 Kbps.[2] So even as an absolute and total bandwidth whore, I'm using less than 10% of what I'm paying for in terms of backbone costs. This means the money is easily there to pay for building additional backbone capacity, and the ISP doesn't have a fundamental business model problem.
Of course the ISP has "last mile" infrastructure costs but that is something already need to have in place to meet their peak rate guarantees on a Sunday afternoon, and doesn't have additional utilization costs associated with it.
Frankly I think traffic shaping ISPs are just being greedy. At the scale they are operating at it is worthwhile trying to rip off their customers to save a small percentage of what they are raking in.
[1] http://www.pbs.org/cringely/pulpit/media/Internet
V ideo0.91.pdf
[2] http://web.forret.com/tools/bandwidth.asp -
Youtube may be worth the hardware they run on...
If Youtube doesn't get some more VC soon to pay their estimated $1mil/month bandwidth costs, they may be worth nothing more than 600 or so servers. http://blog.forret.com/2006/05/youtube-bandwidth-
t erabytes-per-day/ Keep in mind that article was written in May... Bubble 2.0 can change a lot in 3 months. -
Re:hardware ram disk
why not search for a hardware device that appears to be an IDE or SCSI drive but is actually a bank of DIMMs?
Can't speak for the OP, but possibly because IDE maxes out at 1.06 Gbps (Gigabits per second) for ATA-133 and 1.20 Gbps for SATA, whereas PC3200 DDR SDRAM can push 25.60 Gbps?
(all numbers above handily supplied by http://www.forret.com/tools/bandwidth.asp )