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Australian Company Promises Switching Hardware With Sub-130ns Latency
snowdon writes "The race for low-latency in finance and HPC has taken a major turn. A bunch of engineers from Australia have 'thrown away the air conditioning' in a traditional switch, to get a 10G fibre-to-fibre latency of less than 130ns! Way faster than more traditional offerings. This lady (video) would tell you that it's equivalent to just 26m of optical fibre. Does that mean we just lose money faster?"
The trick was not reading TFA.
Now they can suck our economy dry with even more speed and efficiency!
An enigma, wrapped in a riddle, shrouded in bacon and cheese
Pfft, I can't win Quake matches with that latency.
Darn work and filtering. ;-) Oh well..... I'll bookmark and watch it when I get home 11 hours from now.
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Can these numbers be directly compared to the "fiber-to-fiber latency" reported in the article summary?
This is not good news; it promotes a trend in a technological approach to making money in the stock market that should be flat out illegal.
Good luck getting more than 8 inches/ns with real world cables and real world fiber. You can get darn near 11 inches/ns with ladder line and open wire and exotic RF stuff like that (yes it is easily possible to buy faster copper than fiber, if by faster you mean lower latency). Wake me when they switch to ladder line instead of fiber, that'll be the weird day.
The term to google for is velocity of propagation.
"Science flies us to the moon. Religion flies us into buildings." - Victor Stenger
Where you could previously only bailout one ot two banks per year, thanks to this technology about a dozen bailouts are now possible.... Isn't it nice.
The trick was not reading TFS.
[Fuck Beta]
o0t!
Are you saying the medium is lower latency? Because I'd bet once you add all the advanced filtering and encoding schemes you'd need to get reliable 10Gb over the ladder line you'd end up with net more latency. I know this is true even with short distance copper sfp+.
There are 4 boxes to use in the defense of liberty: soap, ballot, jury, ammo. Use in that order. Starting now.
Is like playing the Russian roulette game. With plutonium bullets. Close to a fuel tank.
Yes, we'll all loose money much faster!
Sent as ripples into the electromagnetic field. No single photon has been harmed in the process.
"can back-order at the price of the stock when the order was given."
interesting, but if someone else already got that stock at that price, by what right can they give you someone else's stock at a price different than they were offering? where's that price difference getting made up?
It would have helped in the Facebook IPO. All the investors with this level of link would have devalued Facebook stock faster than normal folks on DSL could have bought it.
http://www.google.com/finance?client=ob&q=NASDAQ:FB
Expand out the whole chart. Looks like a great design for a water slide at a kiddie park.
I only look human.
My mother is a halfling and my dad is an ogre, so that makes me an Ogreling
Even if a lot of research has been put into reducing the latencies of switching technology, the vast majority of real-world deployments are nowhere near where they should be. The result is corporations spending millions upgrading their core switching, and then the result is the same or worse than what they had with ordinary gigabit technology.
I've been to more than half a dozen sites recently with new installations of 10 GbE, but with terrible network performance. All too often, I'm seeing latencies as high as 1.3 milliseconds even for servers on the same switch. Read up on bandwidth-delay product too get an idea of why this would severely nerf throughput. The odd thing is that at a number of these sites, older servers with 1 GbE connected to the same switching infrastructure get 100% of wire speed without issues.
I don't know exactly what the root cause is, but I'm starting to suspect that the extra latency is coming from somewhere that network engineers don't usually test, like CPU power management taking an excessively long time to wake up a core to respond to a packet. What I think happens is something like this:
- The fast network delivers a burst of data very quickly.
- The receiver CPU starts to slowly wake up from sleep mode, while the sender is waiting for an ACK packet, because it has finished sending an entire TCP window.
- The sender CPU goes to sleep, because it still has nothing to do.
- The receiver CPU finally gets around to the packet, which it processes quickly and efficiently, sending the ACK back.
- The receiver OS sees that the CPU is "0.1%" busy, has nothing to do now, so it sends it to back to sleep.
- The sender CPU starts to slowly wake up, while the receiver is also asleep, waiting patiently for more data.
- The cycle repeats, with more waiting at every step.
With slightly slower networks or CPUs, the CPUs never get a chance to be idle long enough to enter a sleep state, so everything is always ready for more data. I've seen 3x improvements in iPerf TCP throughput by simply running a busy-loop in a background process!
The shortest wavelength I've seen used with ladder (twin lead) line is lower UHF (think TV antenna.) The velocity of ladder line is mostly used to determine tuning of an antenna, mostly in the HF realm. Coax also has velocity ratings, as does any electrical path.
I'm not sure of using ladder line for high speed data except for your DSL drop to your house from the pole. That is a type of ladder line. I guess you could call twisted pair a special case of ladder line.
-- I have a private email server in my basement.
Wake me when they switch to ladder line instead of fiber, that'll be the weird day.
My DSL is delivered via ladder line, at least the last few feet from the pole to the house.
http://www.manufacturer.com/cimages/product/www.alibaba.com/0320/a/50038610_50184028_Telephone_Cables_Telephone_Drop_Wire.jpg
-- I have a private email server in my basement.
Citations please on 'hacked left and right'. I've never heard of any HFT getting hacked via interconnect with the exchange
This posting is provided 'AS IS' without warranty of any kind, implied or otherwise.
The short-term trading reduces the average profitability of long-term trades. It is like purchasing goods direct from the manufacturer, versus purchasing goods via a variety of middle-men. The middle-men must extract a markup to pay for their time.
The big stock market traders have found a new variation on the centuries old system of middle-men. They speculatively execute trades designed to intercept profitable movements on the stock market. In short, they purchase from the seller before the long-term trader gets a chance too. This does have the advantage of improving market liquidity, however in cases of model or computer error, this isn't always a good thing.
The bigger problem for long-term traders is that the short-term trading steals some of the profit. In the absence of short-term trading, the long-term trader would have even odds of receiving a fair trading price. If the short-term traders are capable speculatively intercepting a profitable set (and only a profitable set) of trades, then that necessarily means that the long-term trader is less likely to get an equitable price distribution.
Unfortunately, their hardware has the unfortunate side-effect of flipping all bits upside-down.
Unfortunately, their hardware has the unfortunate side-effect of flipping all bits upside-down.
This is actually to the benefit of their sales department because you always have to buy them in pairs. :D
Well they already have loops of cables behind servers to ensure that no one could have a possible advantage. http://www.abc.net.au/news/2012-04-11/kohler-high-frequency-trade-parasites-at-heart-of-asx/3943052
Anyone with a mind set in reality will understand how didiculous that is!
# cat
Damn, my RAM is full of cats. MEOW!!