... it keeps a system live in the event of a drive failure... but if you have a flood or lightning strikes the pole outside the building... you're fucked.
backup means a copy offsite and safe. Mirroring is very nice but not a good idea for a backup strategy.
It's comments like yours which show just how close-minded some people are.
IE4 blew big hairy donkeys with smelly feet and gingivitis. No arguement. I used Nutscrape because a) it worked in Linux and Windows, and b) it was far less buggy.
However, I had my share of trouble with Netscape. Crashes for no apparent reason (nothing to do with java) being my biggest problem. It had serious problems loading large (>400k or so) web pages (I read/. in flat mode), but that wouldn't have bothered me so much if it didn't take down the other eight browser windows I had open!! What else did it do wrong... Let's see... Messenger opened up a connection and downloaded a goddamn Netscape ADVERTISEMENT every time I opened it (prefs.js fixed that). In their infinite wisdom they disabled multiple POP mailboxes but allowed multiple IMAP boxes since they were trying to push IMAP over POP. all kinds of little yuckies, but it was better than IE4. Even going from 4.5 to 4.51 to 4.6 to 4.61 didn't solve any of these problems. There was no email address to complain to. Their FullCircle software often crashed before it could get the report in.
This wasn't because my hardware or install was buggy, this was over three reinstalls and over two completely seperate computers, from Win95OSR2 to Win98. Netscape Communicator just blew, but it was better than IE4.
IE5 is MILES ahead of any Netscape offering, and I hate to admit it. CSS WORKS, it renders HTML much faster and more correctly than Nutscrape, and it would load huge pages without error. It even handles bad HTML better than Nutscrape. I now use IE5 almost exclusively on Win, but am stuck with NS's failures on Linux (albeit not as many failures as Win version).
I very much dislike Opera, it reminds me of being stuck in StarOffice. MDI blows, in my opinion. I need the graphics and a bit of java at times, so don't talk about Lynx. Mozilla may remedy all this, but I'm not getting too excited over it yet.
There will always be a back-and-forth battle until someone finally gets their act together and releases a decent cross-platform browser. Your comment about never touching IE again because of one **first-release-of-software** bugfest is like the child who's bitten by a dog once and vows to kill every dog they ever see as long as they live. What a childish outlook.
I've had all kinds of drives. Seagate, Maxtor, IBM, WD, Fujitsu, Quantum...
They're all pretty decent for a desktop drive. Personally I reccommend Seagate for SCSI (got a pair of their 10000 RPM drives in RAID1 and they scream) or WD.
I've had a few WD's die on me (probably past their MTBF) but WD has been nothing but the best in customer service. One died on me a day after warranty and they extended the warranty on a dead drive 2 weeks so I could get it shipped to them for replacement. In my home computer I've got 3 WDs now and an HP writer. Kinda full there:-)
One thing I've noticed about the recent trend in HUGE CHEAP drives... Where's the backup strategy? Some friends of mine recently bought the 27G (I think) Maxtors... 27G is nice, don't get me wrong, but the home user isn't exactly the type of user to buy a backup strategy capable of handling that much data... when it *does* go south, they're gonna be plenty pissed.
I hope you haven't forgotten a backup strategy.
Andrew
Re:But do you want this functionality in the DATAB
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E-commerce and Linux
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· Score: 1
I never said MySQL wasn't fast... that's one of its biggest plusses IMO...
If what you're really doing are transactions, this is fine. Build up sets of updates that are themselves transactions.
I'm not sure I follow... How do I have the system subtract one from inventory, add it in to the ship queue and add on the sale and taxes for accounting in one statement?
I could see "+1 this product" to an online database and then every hour or so syncing up to the master database, but now you've got two seperate sets of SQL (don't try to tell me that Oracle or Postgres commands will work on MySQL) to keep track of... why not use the same "dialect" on both systems?
You're right -- I don't agree on having the public hit your master database, but I would have made my online database a little meatier than most, I guess.. at least enough to give an order # and start shipping procedure I think. AFAIK, that kind of setup would require transactions.
Your comment about moving Access to MySQL to get to a "REAL" SQL made me laugh.
MySQL does the barest of bones SQL. There is no replication (pending however) and no transactions (status?). If this guy's got a 25k-item catalogue and is expecting any kind of web traffic and wants data inegrity, he NEEDS transactions. Table locks suck.
I suggest Postgres (maybe, it's what I use but not in a heavy production environment) or something meatier like Informix or Oracle. You do NOT want to be doing anything regarding money or inventory without transactions and row-level locks.
I'm part of a small ISP which offers SDSL to businesses. Basically what we've provided on our end looks like this:
Bandwidth comes in and hits our router (cheap 2501), which performs the first level of protection. Basic bad packet drops and the like. From there it hits a Linux box which provides a web cache (with an option to go though JunkBuster), email, news, etc.. All traffic from our customers must go through this box, as it is how we keep track of their bandwidth useage and control it through rshaper. Yes I know that Cisco has offerrings to do this but frankly the routers are too expensive for our current situation.
All the DSL customers are on a 10/100 switch which keeps them from sniffing each other's traffic without requiring us to find a motherboard with 15 PCI slots in it.:-) The office computers at the ISP run off of another ethernet card which has ipchains to do masqing. The Pairgain 300S' we have have no configuration options and no IP so it's not possible to circumvent them to transmit someone else's data easily. (It may be possible to have a machine spit out false ARP replies and confuse the switch but I should be able to circumvent that soon). VPN options for the local banks and the like I'm still looking for acceptable solutions for.
Basically our system protects from outside spoofing and broadcast pings and the like. (echo 1 >/proc/sys/net/ipv4/icp_echo_ignore_broadcasts is your friend here). The linux box doing the cacheing also handles all the SNMP traffic measurements for each IP/group of IPs (mail me for how to get SNMP doing this) and has the basic IP chains set up to reject packets coming in from the wrong interface, etc. Note that I said nothing about not allowing cross-WAN Microsoft Networking... I allow it but alert the client to the security problems... It's my job to keep maximum data flowing, not make them run circles and if they're aware of the consequences and still wish to do it.)
On the client's side we strongly suggest a similar linux firewall. It can be cheap and small and hidden. There's no reason not to do it. For $500 we'll do it for them. All it does is block the bad packets / spoofed packets / etc. and optionally provide their own private web cache which cuts down on their costs. With such a box in place they are safe from the others on our service (although I think I'll set up the linux box to flag alarms for bad packets coming from a client and the like.)
There are other posts here saying things about DTK and other such programs... They're not really necessary unless you want to really see what's going on, which is a good thing, but if all you're concerned about is keeping the baddies out, you don't need to decieve them. Just block them outright.
I have a three year old son who'll be school age soon. I have another child about to pop out any day now. I'm not (wasn't?) the easily-angerable type before, but it seems now that this idiotic draconian system we call the education system is turning me violent.
Do I have to quit my job and stand in the back of my child's classroom to make sure that some asshole teacher doesn't pull this shit on my kids? Do I have to come between the principal and my child when such a completely outrageously fucking stupid "rule" gets enforced and my children suffer? I swear to God I feel like shooting people, and this is not a joke. I completely agree with the poster who said "It's about teaching them to think, not become slaves." I want the social interaction of a public school system but I am looking into homeschooling too... anyone have info on how to get the best of both worlds?
I am (usually) a rational, logical and quite calm person but thinking about this happenning to my children is turning me into a papa bear. I'll be god-damned if someone pulls this shit on my children (or their classmates for that matter) and I hear about it... I mean I FUCKING HELP PAY THEIR SALARIES and heads will roll if this shit happens in my school!
Yes a mark of 100 on that paper is bullshit... simiar shit has happenned to my wife's half-sisters (half sisters in law??) -- one of them drew a graph... the data was right, but the bars were too skinny. What did the teacher do? 2/10. A mark of failure for a graph which was correct but skinny? I'd go ballistic if that were my child! Hell I'm ballisitc NOW just thinking about all this! I can see 7/10, 6/10... but a FAILING mark??? I'd slap the greasy short balding prick for pulling that kind of shit.
I used to think that teachers were okay... and I know that a lot are... I have had some very good teachers... but there has got to be a way to get the pricks and bitches out of the system while keeping the good ones... there has to be a way.
... I can just see it now, I'll be the scourge of the education system... christ I can't believe how riled it makes me...
... off for a walk... Andrew
Re:Bandwidth Constraints and other barriers.
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VDSL Demoed
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Actually there's no such thing as a T3. You're referring to a DS3 which has the a payload equivalent to 28 DS1 (T1) "channels" or 7 DS2 "channels.
As I understand it the "T" designator refers to an electrical specification (these days B8ZS/ESF) but the actual bandwidth of a T1 (1.544mbps raw, 1.536mbps unchannelized, and 1.344mpbs channellized)* whereas the DS designation refers to the logical ordering of bits. It's simialr to how you can send NRZ data any way you please, but it's only called RS-232 if you're sending them with an electrical spec of +/- x volts, with marks being -ve and spaces +ve.
DS3s aren't sent via any particular method. It coudl be sent via this VDSL, SONET, etc., whereas a T1 is sent via T1. A DS1 could be sent via DSL, T1, SONET (but why?) etc.
* I'm not clear on this -- B8ZS encoding leaves the channels 8-bit clean (as oppose to AMI which doesn't and forces the LSB to a 1 giving you 24 56k channels) -- why is the channelized T1 not 64k * 24 channels, as whichever 8-bit timeslots you're sending in determine which channels you're on?
Anyway -- the other point I wanted to mention was that yes it's only 45mbps, but everyone overcommits the bandwidth. How much I'm not sure (hopefully someone else will post that information) -- It's the same as how your dialups are usually on a 6:1 or 7:1 user:line ratio. Just because you have 300 dialup users doesn't mean you have 300 dialup lines available. You likely have 48 or so. I'm not sure how the overcommit games is played in the 24/7 market, but you can bet your bottom dollar that if they have a 45mbps backbone, they don't have ONLY 28 DS1 ports on it. Probably a hundred or so.
Actually I work for an ISP and we're going around the telco. YES you'll need a seperate line unfortunately, but we're using SDSL modems (pairgain 300s') which, in our small town will do about 1.2mbit about 6km out, and up to 128k up to about 10 or 12km... That means we can link up the businesses and the like...
...and my house...:-)
DSL is good stuff, but it is a shame the distance blows large hairy donkeys. Cable would be nice if they didn't overcommit their bandwidth 300:1.
What is a decent overcommit for high-speed users anyway? I've been hearing anywhere from 5:1 to 100:1 but nobody has good solid evidence one way or the next.
In any case, I'll be glad to finally have a modern soundcard with good sound quality which is supported by Linux. That and a port of Impulse Tracker would make me a very happy porcupine. (Yes, I know there's other Linux trackers, but they only implement part of XM at best. I need at least the ability to import ITs in a way that accounts for NNAs and I would much prefer having resonant filtering and MIDI available.)
I don't know about you, but I'd kill for a port of ScreamTracker. Started out with 2.2 I think on an old 386 with the PC Squeeker... moved on to a GUS MAX on a little 486 which sits beside my big-ass Linux box. Man I remember writing code for the GUS to do players just because I wanted to see if I could... Back when I was good at 80x86 assembly, now all I can see is RISC. LOL
I've tried some other trackers but you know how it is... you get stuck on something and before you know it you're old and crochety and just don't give a damn about the others anymore!:-)
Seriously though, if anyone has links to S3M trackers or even something else in which I can convert all my STM/S3Ms over to and use for Linux, I'd be one very happy camper. I've looked into MIDI but my skill at a "real" keyboard just isn't as great.:-)
This is a pretty neat idea, but how different is it from the company -- consultant idea? It's FAR farer-reaching (if such a word exists) than you can get in person, and that makes it super-cool, but .
Personally I think I'd only ask questions on there that I could not find out conventionally. To wit... I still trust people I know far more than people who profess to be experts on some web site somewhere.
Another problem I found just from going through the site quickly... several of the questions are far too vague to warrant a paid answer. How does the answerer ask a question without charging?
...you're forgetting one important ingredient... and it is very important...
I am a tinker and a hacker on the 'net because it's very inexpensive and I can do it with cheap equipment...
To work on the space program or really do groovy things with mechanical things and the like, you need groovy equipment... expensive equipment... Not just a Linux box (or in my day, a DOS box) and oodles of time.
Same with the old days of electronics... I could do amazing things with a box full of parts and a breadboard or seven... Now, unless you're doing microcontrollers (which I really don't consider electronics, that's programming with the ability to make smoke), you can't do as amazing things... Someone always says "I can do that with my Mindstorm." or "I can do that with a $2 PIC and 15 minutes time." or how about "I can do that with one CPLD and 1/10 the space."
Ah vell. My kids will still tinker, but it'll likely be software-related until I can get them to realize that old stuff still is useful for knowledge.
I'm not worried about people running SBLive on production equipment... I was trying to make a point about Linux's stability... when people bypass the checks and the system crashes it adds to the "see, all OS' crash like WinBlows."
Building one from the ground up, reassembling one from odds and ends lying around or adding functionality to an existing product is only really "news" if it achieves something new, whether it be in terms of quality, quantity or uniqueness. I found the previous article about a player with 80 hrs of storage more newsworthy.
uh, dude... these guys *did* build it ground-up. The boys at moretonbay designed the router, added to the uCLinux software collective, and showed the world that you don't need a high-end DSP to do it on an embedded system.
Actually the Moretonbay router is based on the Arnewsh Coldfire eval board (of which I have two) -- Greg (I believe that's his name) has added to the uCLinux project by making the kernel boot properly on these boards. I know, I found a bug in the code which prevented software interrupt vector changes from happenning -- From there, he went to the next level and designed a board with a pair of ethernet ports, a serial port or two and a PCI slot and packaged it all.
This is what open-source is all about!
Take something, get it to work (better) on what you have, contribute your changes back to the collective. But don't stop there! Do something useful with your knowledge! Make money! It's not bad!
As far as the X10 A/V wireless set -- I've got one. Haven't done very sophisticated listening tests on them, but I've had no trouble with the quality of either the A or the V. The video is very clear so I'd imagine throwing a pair of headphones on the output would result in clear audio as well. I'm going through two floors of house to get from one site to the other, so I'd imagine I'm giving the wireless end a bit of a challenge too.
I'm really really glad that he thought of dumping mp3 out of these piggies... I can do the 16 bit stereo part on my lonesome, and these chips are relatively cheap and easy to design with. IDE interfaces aren't difficult to create. Now I've got a stereo component MP3 player which takes either MP3 CDs, a hard drive, or does it over NFS/Samba/whatever.
now if I can only get those Pericom samples soon enough so I can fix my one Arnewsh board... They don't like it when you tell them you're gonna hook 5V up and instead use the 12V line from the PS...:-(
I read through all the comments before posting in hopes that someone else would have explained it..
You don't anti-skip a HDD like you do a CD. It's a different beast, entirely. The heads on a coin-sized HDD don't move like a CD head does. All I can figure for "anti-skip" is a large playback buffer (maybe a couple meg) so it can maybe power down the HDD for a min or so to help conserve battery life.
Also, those 50G and 75G shock ratings for HDDs are when it's POWERED DOWN, if I'm not mistaken... I wonder how long these drives will last with the heads constantly scraping the platters with every bump and nudge... I'd much rather see a CD I think.
My CD-ROM can play audio and read data, right? Why can't my car's disc changer do the same?
Because they're completely different.
Audio CD players don't 'care' what the data is like data CD drives. They read in a little bit of control info, de-interleave the raw audio data and spit it out a DAC. When there's a bit error in an audio CD, the audio drive makes up the data by interpolating the known data points and coming up with a "good guess" of the missing data points.
You can't do that with a data disc. There's much more precise 'control' over how the data is handled and as such, the audio CD doesn't have that capability because it adds cost to the control electronics.
I recently acquired a drive out of a notebook which was checked at the airport. the faceplate's missing but otherwise it's a 6x toshiba CD-ROM. Perfect. I also have an external SCSI CD-ROM drive which is intended to be used for notebooks without drives but with PCMCIA ports. So I have a pair of drives which would work great for MP3 players. I figure I'd use my EZ-Kit Lite (Analog Devices' DSP eval board with enough balls to decode MPEG 1 layer 3 in realtime) and make a nice little player for my Jeep.
However, that's after I am done playing with a little HUD I'm designing, changing out the incandescent bulbs for brake and signal with LEDs, etc, etc... oh yes, and finishing drywalling my upstairs:-) Ahhh the life of a married man.:-)
Slashdot Mirror
Oh sure, home users are going to back up their $200 27GB IDE hard drive on 9GB DATs and then lock them in a safe box across the state line.
you're missing the point. With that much storage, it's easy to accumulate a LOT of data that's important/hard to get.
... it keeps a system live in the event of a drive failure... but if you have a flood or lightning strikes the pole outside the building... you're fucked.
backup means a copy offsite and safe. Mirroring is very nice but not a good idea for a backup strategy.
It's comments like yours which show just how close-minded some people are.
/. in flat mode), but that wouldn't have bothered me so much if it didn't take down the other eight browser windows I had open!! What else did it do wrong... Let's see... Messenger opened up a connection and downloaded a goddamn Netscape ADVERTISEMENT every time I opened it (prefs.js fixed that). In their infinite wisdom they disabled multiple POP mailboxes but allowed multiple IMAP boxes since they were trying to push IMAP over POP. all kinds of little yuckies, but it was better than IE4. Even going from 4.5 to 4.51 to 4.6 to 4.61 didn't solve any of these problems. There was no email address to complain to. Their FullCircle software often crashed before it could get the report in.
IE4 blew big hairy donkeys with smelly feet and gingivitis. No arguement. I used Nutscrape because a) it worked in Linux and Windows, and b) it was far less buggy.
However, I had my share of trouble with Netscape. Crashes for no apparent reason (nothing to do with java) being my biggest problem. It had serious problems loading large (>400k or so) web pages (I read
This wasn't because my hardware or install was buggy, this was over three reinstalls and over two completely seperate computers, from Win95OSR2 to Win98. Netscape Communicator just blew, but it was better than IE4.
IE5 is MILES ahead of any Netscape offering, and I hate to admit it. CSS WORKS, it renders HTML much faster and more correctly than Nutscrape, and it would load huge pages without error. It even handles bad HTML better than Nutscrape. I now use IE5 almost exclusively on Win, but am stuck with NS's failures on Linux (albeit not as many failures as Win version).
I very much dislike Opera, it reminds me of being stuck in StarOffice. MDI blows, in my opinion. I need the graphics and a bit of java at times, so don't talk about Lynx. Mozilla may remedy all this, but I'm not getting too excited over it yet.
There will always be a back-and-forth battle until someone finally gets their act together and releases a decent cross-platform browser. Your comment about never touching IE again because of one **first-release-of-software** bugfest is like the child who's bitten by a dog once and vows to kill every dog they ever see as long as they live. What a childish outlook.
I've had all kinds of drives. Seagate, Maxtor, IBM, WD, Fujitsu, Quantum...
:-)
They're all pretty decent for a desktop drive. Personally I reccommend Seagate for SCSI (got a pair of their 10000 RPM drives in RAID1 and they scream) or WD.
I've had a few WD's die on me (probably past their MTBF) but WD has been nothing but the best in customer service. One died on me a day after warranty and they extended the warranty on a dead drive 2 weeks so I could get it shipped to them for replacement. In my home computer I've got 3 WDs now and an HP writer. Kinda full there
One thing I've noticed about the recent trend in HUGE CHEAP drives... Where's the backup strategy? Some friends of mine recently bought the 27G (I think) Maxtors... 27G is nice, don't get me wrong, but the home user isn't exactly the type of user to buy a backup strategy capable of handling that much data... when it *does* go south, they're gonna be plenty pissed.
I hope you haven't forgotten a backup strategy.
Andrew
I never said MySQL wasn't fast... that's one of its biggest plusses IMO...
If what you're really doing are transactions, this is fine. Build up sets of updates that are themselves transactions.
I'm not sure I follow... How do I have the system subtract one from inventory, add it in to the ship queue and add on the sale and taxes for accounting in one statement?
I could see "+1 this product" to an online database and then every hour or so syncing up to the master database, but now you've got two seperate sets of SQL (don't try to tell me that Oracle or Postgres commands will work on MySQL) to keep track of... why not use the same "dialect" on both systems?
You're right -- I don't agree on having the public hit your master database, but I would have made my online database a little meatier than most, I guess.. at least enough to give an order # and start shipping procedure I think. AFAIK, that kind of setup would require transactions.
Your comment about moving Access to MySQL to get to a "REAL" SQL made me laugh.
MySQL does the barest of bones SQL. There is no replication (pending however) and no transactions (status?). If this guy's got a 25k-item catalogue and is expecting any kind of web traffic and wants data inegrity, he NEEDS transactions. Table locks suck.
I suggest Postgres (maybe, it's what I use but not in a heavy production environment) or something meatier like Informix or Oracle. You do NOT want to be doing anything regarding money or inventory without transactions and row-level locks.
I'm part of a small ISP which offers SDSL to businesses. Basically what we've provided on our end looks like this:
:-) The office computers at the ISP run off of another ethernet card which has ipchains to do masqing. The Pairgain 300S' we have have no configuration options and no IP so it's not possible to circumvent them to transmit someone else's data easily. (It may be possible to have a machine spit out false ARP replies and confuse the switch but I should be able to circumvent that soon). VPN options for the local banks and the like I'm still looking for acceptable solutions for.
/proc/sys/net/ipv4/icp_echo_ignore_broadcasts is your friend here). The linux box doing the cacheing also handles all the SNMP traffic measurements for each IP/group of IPs (mail me for how to get SNMP doing this) and has the basic IP chains set up to reject packets coming in from the wrong interface, etc. Note that I said nothing about not allowing cross-WAN Microsoft Networking... I allow it but alert the client to the security problems... It's my job to keep maximum data flowing, not make them run circles and if they're aware of the consequences and still wish to do it.)
Bandwidth comes in and hits our router (cheap 2501), which performs the first level of protection. Basic bad packet drops and the like. From there it hits a Linux box which provides a web cache (with an option to go though JunkBuster), email, news, etc.. All traffic from our customers must go through this box, as it is how we keep track of their bandwidth useage and control it through rshaper. Yes I know that Cisco has offerrings to do this but frankly the routers are too expensive for our current situation.
All the DSL customers are on a 10/100 switch which keeps them from sniffing each other's traffic without requiring us to find a motherboard with 15 PCI slots in it.
Basically our system protects from outside spoofing and broadcast pings and the like. (echo 1 >
On the client's side we strongly suggest a similar linux firewall. It can be cheap and small and hidden. There's no reason not to do it. For $500 we'll do it for them. All it does is block the bad packets / spoofed packets / etc. and optionally provide their own private web cache which cuts down on their costs. With such a box in place they are safe from the others on our service (although I think I'll set up the linux box to flag alarms for bad packets coming from a client and the like.)
There are other posts here saying things about DTK and other such programs... They're not really necessary unless you want to really see what's going on, which is a good thing, but if all you're concerned about is keeping the baddies out, you don't need to decieve them. Just block them outright.
... the angrier I get.
I have a three year old son who'll be school age soon. I have another child about to pop out any day now. I'm not (wasn't?) the easily-angerable type before, but it seems now that this idiotic draconian system we call the education system is turning me violent.
Do I have to quit my job and stand in the back of my child's classroom to make sure that some asshole teacher doesn't pull this shit on my kids? Do I have to come between the principal and my child when such a completely outrageously fucking stupid "rule" gets enforced and my children suffer? I swear to God I feel like shooting people, and this is not a joke. I completely agree with the poster who said "It's about teaching them to think, not become slaves." I want the social interaction of a public school system but I am looking into homeschooling too... anyone have info on how to get the best of both worlds?
I am (usually) a rational, logical and quite calm person but thinking about this happenning to my children is turning me into a papa bear. I'll be god-damned if someone pulls this shit on my children (or their classmates for that matter) and I hear about it... I mean I FUCKING HELP PAY THEIR SALARIES and heads will roll if this shit happens in my school!
Yes a mark of 100 on that paper is bullshit... simiar shit has happenned to my wife's half-sisters (half sisters in law??) -- one of them drew a graph... the data was right, but the bars were too skinny. What did the teacher do? 2/10. A mark of failure for a graph which was correct but skinny? I'd go ballistic if that were my child! Hell I'm ballisitc NOW just thinking about all this! I can see 7/10, 6/10... but a FAILING mark??? I'd slap the greasy short balding prick for pulling that kind of shit.
I used to think that teachers were okay... and I know that a lot are... I have had some very good teachers... but there has got to be a way to get the pricks and bitches out of the system while keeping the good ones... there has to be a way.
... I can just see it now, I'll be the scourge of the education system... christ I can't believe how riled it makes me...
... off for a walk...
Andrew
Actually there's no such thing as a T3. You're referring to a DS3 which has the a payload equivalent to 28 DS1 (T1) "channels" or 7 DS2 "channels.
As I understand it the "T" designator refers to an electrical specification (these days B8ZS/ESF) but the actual bandwidth of a T1 (1.544mbps raw, 1.536mbps unchannelized, and 1.344mpbs channellized)* whereas the DS designation refers to the logical ordering of bits. It's simialr to how you can send NRZ data any way you please, but it's only called RS-232 if you're sending them with an electrical spec of +/- x volts, with marks being -ve and spaces +ve.
DS3s aren't sent via any particular method. It coudl be sent via this VDSL, SONET, etc., whereas a T1 is sent via T1. A DS1 could be sent via DSL, T1, SONET (but why?) etc.
* I'm not clear on this -- B8ZS encoding leaves the channels 8-bit clean (as oppose to AMI which doesn't and forces the LSB to a 1 giving you 24 56k channels) -- why is the channelized T1 not 64k * 24 channels, as whichever 8-bit timeslots you're sending in determine which channels you're on?
Anyway -- the other point I wanted to mention was that yes it's only 45mbps, but everyone overcommits the bandwidth. How much I'm not sure (hopefully someone else will post that information) -- It's the same as how your dialups are usually on a 6:1 or 7:1 user:line ratio. Just because you have 300 dialup users doesn't mean you have 300 dialup lines available. You likely have 48 or so. I'm not sure how the overcommit games is played in the 24/7 market, but you can bet your bottom dollar that if they have a 45mbps backbone, they don't have ONLY 28 DS1 ports on it. Probably a hundred or so.
I don't think Slashdot or Freshmeat or Deja or Valueclick or IMDB would be the same with PHP instead of mod_perl.
I am pretty damn sure that freshmeat runs PHP...
Actually I work for an ISP and we're going around the telco. YES you'll need a seperate line unfortunately, but we're using SDSL modems (pairgain 300s') which, in our small town will do about 1.2mbit about 6km out, and up to 128k up to about 10 or 12km... That means we can link up the businesses and the like...
:-)
...and my house...
DSL is good stuff, but it is a shame the distance blows large hairy donkeys. Cable would be nice if they didn't overcommit their bandwidth 300:1.
What is a decent overcommit for high-speed users anyway? I've been hearing anywhere from 5:1 to 100:1 but nobody has good solid evidence one way or the next.
In any case, I'll be glad to finally have a modern soundcard with good sound quality which is supported by Linux. That and a port of Impulse Tracker would make me a very happy porcupine. (Yes, I know there's other Linux trackers, but they only implement part of XM at best. I need at least the ability to import ITs in a way that accounts for NNAs and I would much prefer having resonant filtering and MIDI available.)
:-)
:-)
I don't know about you, but I'd kill for a port of ScreamTracker. Started out with 2.2 I think on an old 386 with the PC Squeeker... moved on to a GUS MAX on a little 486 which sits beside my big-ass Linux box. Man I remember writing code for the GUS to do players just because I wanted to see if I could... Back when I was good at 80x86 assembly, now all I can see is RISC. LOL
I've tried some other trackers but you know how it is... you get stuck on something and before you know it you're old and crochety and just don't give a damn about the others anymore!
Seriously though, if anyone has links to S3M trackers or even something else in which I can convert all my STM/S3Ms over to and use for Linux, I'd be one very happy camper. I've looked into MIDI but my skill at a "real" keyboard just isn't as great.
This is a pretty neat idea, but how different is it from the company -- consultant idea? It's FAR farer-reaching (if such a word exists) than you can get in person, and that makes it super-cool, but .
Personally I think I'd only ask questions on there that I could not find out conventionally. To wit... I still trust people I know far more than people who profess to be experts on some web site somewhere.
Another problem I found just from going through the site quickly... several of the questions are far too vague to warrant a paid answer. How does the answerer ask a question without charging?
...you're forgetting one important ingredient... and it is very important...
I am a tinker and a hacker on the 'net because it's very inexpensive and I can do it with cheap equipment...
To work on the space program or really do groovy things with mechanical things and the like, you need groovy equipment... expensive equipment... Not just a Linux box (or in my day, a DOS box) and oodles of time.
Same with the old days of electronics... I could do amazing things with a box full of parts and a breadboard or seven... Now, unless you're doing microcontrollers (which I really don't consider electronics, that's programming with the ability to make smoke), you can't do as amazing things... Someone always says "I can do that with my Mindstorm." or "I can do that with a $2 PIC and 15 minutes time." or how about "I can do that with one CPLD and 1/10 the space."
Ah vell. My kids will still tinker, but it'll likely be software-related until I can get them to realize that old stuff still is useful for knowledge.
I'm not worried about people running SBLive on production equipment... I was trying to make a point about Linux's stability... when people bypass the checks and the system crashes it adds to the "see, all OS' crash like WinBlows."
um... be careful with insmod -f ... bypasses a lot of sanity checks and could hang your system or worse, depending on the module used.
dammit I went to that site before and found it funny as hell. I forgot all about it and clicked through again... STOP MAKING ME VIEW YOUR PR0N!!
DSL comes in flavors from 144 kbps all the way up to 1.5 Mbps..
I thought ADSL was up to 8mbps...
the SDSL modems I have in front of me do 2.048mbps...
Building one from the ground up, reassembling one from odds and ends lying around or adding functionality to an existing product is only really "news" if it achieves something new, whether it be in terms of quality, quantity or uniqueness. I found the previous article about a player with 80 hrs of storage more newsworthy.
uh, dude... these guys *did* build it ground-up. The boys at moretonbay designed the router, added to the uCLinux software collective, and showed the world that you don't need a high-end DSP to do it on an embedded system.
VERY newsworthy, if you ask me.
Actually the Moretonbay router is based on the Arnewsh Coldfire eval board (of which I have two) -- Greg (I believe that's his name) has added to the uCLinux project by making the kernel boot properly on these boards. I know, I found a bug in the code which prevented software interrupt vector changes from happenning -- From there, he went to the next level and designed a board with a pair of ethernet ports, a serial port or two and a PCI slot and packaged it all.
:-(
This is what open-source is all about!
Take something, get it to work (better) on what you have, contribute your changes back to the collective. But don't stop there! Do something useful with your knowledge! Make money! It's not bad!
As far as the X10 A/V wireless set -- I've got one. Haven't done very sophisticated listening tests on them, but I've had no trouble with the quality of either the A or the V. The video is very clear so I'd imagine throwing a pair of headphones on the output would result in clear audio as well. I'm going through two floors of house to get from one site to the other, so I'd imagine I'm giving the wireless end a bit of a challenge too.
I'm really really glad that he thought of dumping mp3 out of these piggies... I can do the 16 bit stereo part on my lonesome, and these chips are relatively cheap and easy to design with. IDE interfaces aren't difficult to create. Now I've got a stereo component MP3 player which takes either MP3 CDs, a hard drive, or does it over NFS/Samba/whatever.
now if I can only get those Pericom samples soon enough so I can fix my one Arnewsh board... They don't like it when you tell them you're gonna hook 5V up and instead use the 12V line from the PS...
I read through all the comments before posting in hopes that someone else would have explained it..
You don't anti-skip a HDD like you do a CD. It's a different beast, entirely. The heads on a coin-sized HDD don't move like a CD head does. All I can figure for "anti-skip" is a large playback buffer (maybe a couple meg) so it can maybe power down the HDD for a min or so to help conserve battery life.
Also, those 50G and 75G shock ratings for HDDs are when it's POWERED DOWN, if I'm not mistaken... I wonder how long these drives will last with the heads constantly scraping the platters with every bump and nudge... I'd much rather see a CD I think.
My CD-ROM can play audio and read data, right? Why can't my car's disc changer do the same?
:-) Ahhh the life of a married man. :-)
Because they're completely different.
Audio CD players don't 'care' what the data is like data CD drives. They read in a little bit of control info, de-interleave the raw audio data and spit it out a DAC. When there's a bit error in an audio CD, the audio drive makes up the data by interpolating the known data points and coming up with a "good guess" of the missing data points.
You can't do that with a data disc. There's much more precise 'control' over how the data is handled and as such, the audio CD doesn't have that capability because it adds cost to the control electronics.
I recently acquired a drive out of a notebook which was checked at the airport. the faceplate's missing but otherwise it's a 6x toshiba CD-ROM. Perfect. I also have an external SCSI CD-ROM drive which is intended to be used for notebooks without drives but with PCMCIA ports. So I have a pair of drives which would work great for MP3 players. I figure I'd use my EZ-Kit Lite (Analog Devices' DSP eval board with enough balls to decode MPEG 1 layer 3 in realtime) and make a nice little player for my Jeep.
However, that's after I am done playing with a little HUD I'm designing, changing out the incandescent bulbs for brake and signal with LEDs, etc, etc... oh yes, and finishing drywalling my upstairs
colour me ignorant, but what is the Poll Tax? I'm not from that side of the pond...
Canadians are fatter (by population) than Americans? I really doubt it.. We have snow to shovel!
Canadians are fatter (by population) than Americans? I really doubt it.. We have snow to shovel!