Yes. You do things in parallel and you make things redundant. You are fabricating reliability out of unreliable components vis-a-vis TCP over IP.
Lets talk about real-time systems. No, not "Voice over IP" or "streaming video" crap, I mean REAL human grade real-time systems.
How do they get 99.99999% reliability? The components they use may be good, but nothing is that good! They get it by 1) removing single points of failure and 2) rigorously analyzing common mode failures (a sequence of failures that brings everything down).
How is this done? You put things in parallel. Machines are multi-homed. Critical applications are Hot-standby, as are their critical servers. You have the nightmare of constant Standby-Data Management (the Primary sending a copy of its every transaction to the secondary and to the tertiary) but when the power on one side goes out (of course your primary and standby are in differnet buildings connected to different power supplies, right?!) the secondary steps right up.
I like the woman's take on it, where she says (this is a paraphrase, actually) "Its nice that it cares, even if it is a machine"
Its like your aunt Edna buying you a KORN cd becuase she knows how much you like that rock music (You once listened to Nirvana in her presence back when you were a PFY*!) She tried, but she got it waaaay wrong.
Now if you couple that with rampant self-homophobia (it isn't REAL homophobia. Its they "its okay if THEY are gay, but I'm not. I mean it. I'm so not gay. Really) you have the plot for almost every crummy sitcom. Why can't Journalists get laughs, too?
*Pimply-Faced Youth. Damn! Don't you read BOFH?!?!
Its' great- get my meetings for the week (or whatever) from outlook. Download to either my Visor or my Phone. Turn on IR in both- send.
Or, jot a meeting note down in my Visor (easier to write more), beam over to the phone (vibrating alert is much better- sometimes I can't hear a little "beep beep beep!" but I will feel the buzz in even the noisiest environ.)
I've used it for all SORTS of games, I use it for shopping lists, for DVD's-to-be-rented list, X_mas gifts, to do for work and school, and my new favorite: I write down info about good inexpensive wines (from NYT or Wash Post)- then when I'm in the wine store if I see a name a do a quick find- Which Louis Jadot wine was recommended? Oh! It was the 2000 Bourgogne Chardonnay! (which Montgomery County DLC had on sale!)
and if/when I get wireless web on my phone you'll have to show me how to get the two working together.
P.S.- bejewelled is the first shareware I've paid for! I really love that game.
Yeah, WORD UP on the cereal! Safeway was selling 5 boxes of honey nut cheerios for $10. WHAT?!?! craziness.
I often think to myself (usually while clipping 3-4 weeks worth of coupons I've let pile up) "is the savings worth my time?" And then I end up saving $15 in coupons and $40 in total savings (not all the time... just sometimes)
I'm still not sure if its worth my time, but I guess its a habit now.
My argument was that I appreciate sales (Yes, I clip coupons and I do the math, but not on my pda. I gotta keep sharp somehow!) and typically the Club Card savings ends up being better than what I can do with a coupon (the best is when I use the two in conjunction!)- the end result is I usually buy what they are telling me to buy.
But I don't care if they give the illusion of choice or not.
I need an electronic shopping list. Give me that, and I'll spend all my money at your store; impulse buy or not.
you wrote: But many corporations have been reluctant to switch to Linux due to its image as an OS used by outcasts, hippies, pirates, and hackers.
Which is totally wrong. Every managers fisrt question is usually: "hmmm, this linux thing, does it run Outlook and Office? But more importantly, does it run AOL?"
let me beam my shopping list from my PDA/cell phone to the cart. Its annoying running around a store with a Visor in 1 hand and the cart in the other.
Let me look at the list and check items off. If you want to get crafty- tell me what aisles my products are in and tell me what sales you are having. To make it even craftier- add that UPC scanner, and let me scan in my cupons- THEN have the cart tell me which one is cheaper.
All I react to are "sales" and the sales associated with the club card. If Diet Pepsi is on sale I'll buy that instead of diet coke, and vice versa. I have relatively little brand loyalty so gear your advertisements in a way that works.
I get my codes from www.styleforfree.com www.webbuyingguide.com and www.currentcodes.com
so I get my discounts, the browser gives me ads and stuff, and I get to sit on my duff and do it from home.
They put the shopping cart in the browser, and I think i worked pretty well. But I putting the browser in the shopping cart? Why? Can't they track me well enough through my "Safeway Card"? They offer discounts so I use it...
So lets see- cheaper tracking through discount cards. A computer that I can spill my starbucks on and break.
You can read that interview at the Onion's AV ROOM.
No link provided, becuase if you don't know about the AV room, you are missing out on a great deal. No joke- I buy albums and watch movies simply at their say-so. They have the best critics. Ever.
I had my debit card stolen and used for an online purchase (Penis pills, no less!) I filed a complaint with my bank. They stalled and dragged their feet.
I got in touch with the company who was frauded and they said "yeah, your card number was used by someone in Kazahkstan!! This obviously wasn't you so we're gonna credit you your money back"
great merchant and it took seconds. (I would buy stuff from them... too bad they only sell penis pills!) The bank and their debit cards can take a hike.
If they are charging you for their ATM usage, you need to think about switching to another bank. On the real.
The only other name you need to know is Charlie Watts... drummer extrordinaire.
But you really only need to know that if yr a drum geek.
I saw them in high school on the "voodoo lounge" tour and thought "oh yeah, this is their last time around" but I guess animatronic puppets have come a long way since 1994!
haha! It also seems like the messages from the keyboard are arriving out of order! (read the first 5 words of the original post... you see what I mean)
No, unfortunately, that is simply my brain dropping packets destined for my fingers. Tis a shame, really.
FIne it's relaibale becasue of acks, timeouts, adaptive re-transmit timeouts that take statistical averages of RTT times, exponential back-off and slow start, window acks which keep track of what bytes are received, etc.
So in your case of timing out N, re-tx'ing N, and then getting the repsonse to the first N back after sending the second N, you do two things: 1) Good! You got yr packet! 2) keep track of how many bytes you have received thsu far (TCP is not sending messages, it is sending a stream) 3) when you get the response from your second request, discard it, becuase you already received those bytes from the stream. 4) since you timed out, DON'T use the Round TRip Time for that reponse: slow down your expected RTT time, and THEN start measuring.
And guess what? If I unplug the NIC of the other machine, there is no reliable way of transmitting that data (assuming your destination machine isn't dual homed)- so I keep streaming bytes to a TCP socket and I don't find out my peer is gone for approx. 2 minutes. WOW. There's nothing reliable about that boundary condition!
my point is TCP is reliable ENOUGH. But I wouldn't equate it with a Maytag warranty. It is not a panacea. Infact, for a closed homogenous network I wouldn't even consider it the best option. But if the boundary conditions fall within the acceptible fudge range (remember Real Time human grade systems are not 100% reliable, only 99.99999% and much of that is achieved through redundancy) your leaks are ok.
Damn straight- I've got a friend who's getting his MBA at the same place I'm getting my MS in CS... depending on how he rates the program (I think so far its' thumbs down!) I may follow in his footsteps, or just tap his network of contacts.
Doubtful, however I would love to be proven wrong.
I think the availability will be limited to those who paid attention in the class "Fields, Matter, and Waves II" and "Microwave and Highspeed circuits" (both of which I attended, neither of which I remember a damn thing about. Maxwell who?)
So its a good thing you are getting into antenna design as a hobby! You are getting into antenna design, aren't you?
Slashdot Mirror
I wonder if that open source ATC comment was for that UK airspace shutdown on May 17th...
Its nothing open source could fix...
he shouldn't worry though, we've put a fix in for that (Works damn well, too!)
Yes. You do things in parallel and you make things redundant. You are fabricating reliability out of unreliable components vis-a-vis TCP over IP.
Lets talk about real-time systems. No, not "Voice over IP" or "streaming video" crap, I mean REAL human grade real-time systems.
How do they get 99.99999% reliability? The components they use may be good, but nothing is that good! They get it by 1) removing single points of failure and 2) rigorously analyzing common mode failures (a sequence of failures that brings everything down).
How is this done? You put things in parallel. Machines are multi-homed. Critical applications are Hot-standby, as are their critical servers. You have the nightmare of constant Standby-Data Management (the Primary sending a copy of its every transaction to the secondary and to the tertiary) but when the power on one side goes out (of course your primary and standby are in differnet buildings connected to different power supplies, right?!) the secondary steps right up.
Wait, he killed his own wife?!
/reads Salon article Oh shizznizz! I missed the whole sammy jankis was him thing!
I didn't get that at all!
Time to go see that movie again!
I like the woman's take on it, where she says (this is a paraphrase, actually) "Its nice that it cares, even if it is a machine"
Its like your aunt Edna buying you a KORN cd becuase she knows how much you like that rock music (You once listened to Nirvana in her presence back when you were a PFY*!)
She tried, but she got it waaaay wrong.
Now if you couple that with rampant self-homophobia (it isn't REAL homophobia. Its they "its okay if THEY are gay, but I'm not. I mean it. I'm so not gay. Really) you have the plot for almost every crummy sitcom. Why can't Journalists get laughs, too?
*Pimply-Faced Youth. Damn! Don't you read BOFH?!?!
titanic. google it. I did (gawd! I wasn't gonna watch that dreck!)
yes.
P.S.- my wife just read the trilogy in a day or two.
I asked "How?!"
She replied "Oh, I skipped all that stupid singing crap. Man! They sing abou everything!"
okay, lesse,
Citizen Cain,
Thelma & Louis,
Crying Game
Titanic
The sixth sense
This game is GREAT!
I LOVE how my Visor Neo and 3360 talk!
Its' great- get my meetings for the week (or whatever) from outlook.
Download to either my Visor or my Phone. Turn on IR in both- send.
Or, jot a meeting note down in my Visor (easier to write more), beam over to the phone (vibrating alert is much better- sometimes I can't hear a little "beep beep beep!" but I will feel the buzz in even the noisiest environ.)
I've used it for all SORTS of games, I use it for shopping lists, for DVD's-to-be-rented list, X_mas gifts, to do for work and school, and my new favorite:
I write down info about good inexpensive wines (from NYT or Wash Post)- then when I'm in the wine store if I see a name a do a quick find- Which Louis Jadot wine was recommended? Oh! It was the 2000 Bourgogne Chardonnay! (which Montgomery County DLC had on sale!)
and if/when I get wireless web on my phone you'll have to show me how to get the two working together.
P.S.- bejewelled is the first shareware I've paid for! I really love that game.
Nice sig...
"Zen & the art..."
Yeah, WORD UP on the cereal!
Safeway was selling 5 boxes of honey nut cheerios for $10. WHAT?!?! craziness.
I often think to myself (usually while clipping 3-4 weeks worth of coupons I've let pile up) "is the savings worth my time?" And then I end up saving $15 in coupons and $40 in total savings (not all the time... just sometimes)
I'm still not sure if its worth my time, but I guess its a habit now.
I don't doubt it...
My argument was that I appreciate sales (Yes, I clip coupons and I do the math, but not on my pda. I gotta keep sharp somehow!) and typically the Club Card savings ends up being better than what I can do with a coupon (the best is when I use the two in conjunction!)- the end result is I usually buy what they are telling me to buy.
But I don't care if they give the illusion of choice or not.
I need an electronic shopping list. Give me that, and I'll spend all my money at your store; impulse buy or not.
Very funny...
But to take you seriously for half a second:
you wrote:
But many corporations have been reluctant to switch to Linux due to its image as an OS used by outcasts, hippies, pirates, and hackers.
Which is totally wrong. Every managers fisrt question is usually: "hmmm, this linux thing, does it run Outlook and Office? But more importantly, does it run AOL?"
let me beam my shopping list from my PDA/cell phone to the cart. Its annoying running around a store with a Visor in 1 hand and the cart in the other.
Let me look at the list and check items off.
If you want to get crafty- tell me what aisles my products are in and tell me what sales you are having.
To make it even craftier- add that UPC scanner, and let me scan in my cupons- THEN have the cart tell me which one is cheaper.
All I react to are "sales" and the sales associated with the club card. If Diet Pepsi is on sale I'll buy that instead of diet coke, and vice versa. I have relatively little brand loyalty so gear your advertisements in a way that works.
I get my codes from www.styleforfree.com www.webbuyingguide.com and www.currentcodes.com
so I get my discounts, the browser gives me ads and stuff, and I get to sit on my duff and do it from home.
They put the shopping cart in the browser, and I think i worked pretty well. But I putting the browser in the shopping cart? Why? Can't they track me well enough through my "Safeway Card"?
They offer discounts so I use it...
So lets see- cheaper tracking through discount cards. A computer that I can spill my starbucks on and break.
Gee, it doesn't sound cost effective.
You can read that interview at the Onion's AV ROOM.
No link provided, becuase if you don't know about the AV room, you are missing out on a great deal.
No joke- I buy albums and watch movies simply at their say-so. They have the best critics. Ever.
becuase you must be dreaming.
I had my debit card stolen and used for an online purchase (Penis pills, no less!) I filed a complaint with my bank. They stalled and dragged their feet.
I got in touch with the company who was frauded and they said "yeah, your card number was used by someone in Kazahkstan!! This obviously wasn't you so we're gonna credit you your money back"
great merchant and it took seconds. (I would buy stuff from them... too bad they only sell penis pills!) The bank and their debit cards can take a hike.
If they are charging you for their ATM usage, you need to think about switching to another bank. On the real.
Too right, my man, too right! On like EVERY level!
The only other name you need to know is Charlie Watts... drummer extrordinaire.
But you really only need to know that if yr a drum geek.
I saw them in high school on the "voodoo lounge" tour and thought "oh yeah, this is their last time around" but I guess animatronic puppets have come a long way since 1994!
He's prolly a RS/6000 programmer.
Registers are initialized to 0xDEADBEEF
He's also prolly really sensitive to Hagar the Horrible jokes...
haha! It also seems like the messages from the keyboard are arriving out of order! (read the first 5 words of the original post... you see what I mean)
No, unfortunately, that is simply my brain dropping packets destined for my fingers.
Tis a shame, really.
FIne it's relaibale becasue of acks, timeouts, adaptive re-transmit timeouts that take statistical averages of RTT times, exponential back-off and slow start, window acks which keep track of what bytes are received, etc.
So in your case of timing out N, re-tx'ing N, and then getting the repsonse to the first N back after sending the second N, you do two things:
1) Good! You got yr packet!
2) keep track of how many bytes you have received thsu far (TCP is not sending messages, it is sending a stream)
3) when you get the response from your second request, discard it, becuase you already received those bytes from the stream.
4) since you timed out, DON'T use the Round TRip Time for that reponse: slow down your expected RTT time, and THEN start measuring.
And guess what? If I unplug the NIC of the other machine, there is no reliable way of transmitting that data (assuming your destination machine isn't dual homed)- so I keep streaming bytes to a TCP socket and I don't find out my peer is gone for approx. 2 minutes.
WOW. There's nothing reliable about that boundary condition!
my point is TCP is reliable ENOUGH. But I wouldn't equate it with a Maytag warranty. It is not a panacea. Infact, for a closed homogenous network I wouldn't even consider it the best option. But if the boundary conditions fall within the acceptible fudge range (remember Real Time human grade systems are not 100% reliable, only 99.99999% and much of that is achieved through redundancy) your leaks are ok.
Not if you sell blank media! Given your 8 hour time limit you won't be able to wait for the rebate deals at Best Buy the one time you run out.
actually, I thought it was Maxwell Edison, and his silver hammer...
b3@tl3s R r@d!!
Damn straight- I've got a friend who's getting his MBA at the same place I'm getting my MS in CS... depending on how he rates the program (I think so far its' thumbs down!) I may follow in his footsteps, or just tap his network of contacts.
Let me know how your start-up works out!
Doubtful, however I would love to be proven wrong.
I think the availability will be limited to those who paid attention in the class "Fields, Matter, and Waves II" and "Microwave and Highspeed circuits" (both of which I attended, neither of which I remember a damn thing about. Maxwell who?)
So its a good thing you are getting into antenna design as a hobby! You are getting into antenna design, aren't you?
P.S.- good luck with those smith charts.