How Linux could own the education market

Dave Farquhar Linux , , , , , , , , , , , , ,

How Linux could own the education market. I spent some time yesterday evening working on computers. They were contrasts to the extreme: One, a brand-spankin’ new 1 GHz AMD Duron system with 512MB of RAM and 80 GB of 7200-rpm storage (IDE, unfortunately–but for $800, what do you want?). The other was an elderly AST 486SX/25 running Windows 3.1 belonging to a local teacher who goes to my church.
She teaches kindergarten, and the AST used to be her home computer. When she bought a Compaq Presario a couple of years ago, she took the AST to school. It’s more useful there than in her basement, and there’d be no computer in her classroom if it weren’t for that.

I don’t understand why that is. As much as my sister jokes about it, we don’t exactly live in the ghetto. The school district has money, but it isn’t spending it on computers. Whether that’s a good or bad thing depends on your point of view. The majority of people living in Oakville probably own home computers, so this probably isn’t contributing to the technology gap. But I wonder sometimes how things might have been if I’d been exposed to computers a few years earlier.

I was shocked how much I remembered about Windows 3.1. And I was able to figure out how to get her CD-ROM drive to play music CDs. Don’t ask me how; this was the first I’d messed with Windows 3.1 since 1994 and I’d prefer it stay that way–I was so impressed by Windows 3.1 that I’m one of the 12 people who actually went out and paid money for OS/2. I own actual, retail-box copies of OS/2 2.1, 3.0, and 4.0. And I remember distinctly thinking that her computer has enough memory to run OS/2 at least as well as it runs Windows 3.1…

I also remember distinctly thinking that my employer pays someone $15 a pound to haul better computers than hers away several times a year. We regard 486s as junk; low-end Pentiums may also go out, depending on whether the right person finds out about them beforehand. Usually they work just fine–the problem isn’t the computers, it’s people trying to run Internet Exploiter 6 and Office 2000 on them. They’d run Windows 95 and Office 95 perfectly fine.

But a lot of times we can’t give these old computers away because the licenses for the software that originally came with them are long gone. Old computers are useless without software, so no one would want them anyway.

Now, let me tell you something about kids. Kids don’t care much about the computers they use. As long as there’s software on them, they’ll use them. When I was a kid 20 years ago, I used Radio Shack TRS-80 computers at school. The next year, my family moved, and my new school had Commodore 64s. I couldn’t tell much difference. My next-door neighbor had a Radio Shack Color Computer. They were computers. The Commodores had better graphics, but from a usability standpoint, the biggest difference was where the cartridge slot was so you could change programs. Later on I took a summer class at the local junior college, learning about Apple IIs and IBM PCs. I adjusted smoothly. So did all the other kids in the class. Software was software.

Kids don’t care if the computer they’re using runs Windows or Mac OS or Linux. All they care about is whether there are cool programs to run.

So, businesses throw useless computers away, or they give useless computers to schools so they don’t have to pay someone to haul them away. And schools don’t generally know what to do with obsolete computers that lack software.

Linux won’t run fabulously on old 486s, but Debian with a lightweight window manager like IceWM will run OK. (Let’s face it, Windows 3.1 doesn’t run fabulously on them either–it crashes if you breathe wrong.) I know of a project to clone Oregon Trail on Linux. Great start. How about Sea Route to India? I remember playing that on C-64s at school. It may have been a type-in out of a magazine–I don’t remember where exactly it came from. In these violent times, Artillery might be too controversial, but it taught us early on about angles and forces. Artillery was an ancestor to games like Scorched Earth, but without the heavy-duty nukes. Close wasn’t good enough to win in Artillery. You had to be exact. And no blowing up the mountains between you and your opponents either. You had to figure out how to get over them.

But what about doing homework? By the time I was in the sixth grade, they were teaching us how to use word processors and databases and spreadsheets. AbiWord is a fabulous lightweight word processor. It gives you fonts and spell-checking and good page formatting. (I learned word processing on Bank Street Writer. AbiWord is a far, far cry from that. Frankly, I’d rather write a paper with vi than with Bank Street Writer.) Besides being feature-rich, AbiWord’s been lightning fast on every computer I’ve tried it on. Gnumeric is a nice, fast, capable spreadsheet. I don’t know of a free-form database, but I haven’t looked for one lately either. (I don’t think we need to be trying to teach our 6th graders SQL.)

But what about for younger kids? I remember a program called The Factory. The object was you combined chemicals to make monsters. Different chemicals made different monsters. I seem to remember you played around to see what chemicals would make which heads and torsos and arms. Then the computer started showing you monsters and you had to figure out what chemicals to give it to match them. I also remember a program called Snooper Troops. I don’t remember much else about it, other than it was a mystery and you went around looking for clues, and one of my classmates accidentally formatted the disk one day before any of us had managed to solve it. We couldn’t get the disk replaced, because it was out of print.

And Spinnaker had all sorts of simple titles for younger kids that let them tell stories and other stuff. It seemed cool at the time. But that was almost 20 years ago, so about all I remember was that sailboat logo and some corny theme music.

The other thing about those old days was that the majority of these programs were written in Basic. An ambitious teacher could modify them, to make them easier or harder, or improve the graphics a little. As we got older and learned to program, some of us would try our hand at making changes. You can’t do that anymore with Windows or Macintosh educational titles. Open source can bring all that back too, provided the programs are written in languages like Perl or Python. And it can give cash-strapped schools a way to get computers where kids can use them.

Now I’m wondering what it would take to write something like The Factory in Python…

Ho-hum.

Dave Farquhar General , , , , , , , , ,

Another day, another Outlook worm. Tell me again why I continue to use Outlook? Not that I ever open unexpected attachments. For that matter, I rarely open expected ones–I think it’s rude. Ever heard of cut and paste? It’s bad enough that I have to keep one resource hog open to read e-mail, so why are you going to make me load another resource hog, like Word or Excel, to read a message where the formatting doesn’t matter?
The last couple of times I received Word attachments that were important, I converted them to PDFs for grins. Would you believe the PDFs were considerably smaller? I was shocked too. Chances are there was a whole lot of revisioning data left in those documents–and it probably included speculative stuff that underlings like me shouldn’t see. Hmm. I guess that’s another selling point for that PDF-printer we whipped up as a proof of concept a couple of weeks ago, isn’t it? I’d better see if I can get that working again. I never did get it printing from the Mac, but seeing as all the decision-makers who’d be using it for security purposes use PCs, that’s no problem.

I spent the day learning a commercial firewall program. (Nope, sorry, won’t tell you which one.) My testbed for this thing will be an old Gateway 2000 box whose factory motherboard was replaced by an Asus SP97 at some point in the past. It’s got 72 megs of RAM. I put in an Intel Etherexpress Pro NIC today. I have another Etherexpress Pro card here that I’m bringing in, so I’ll have dual EEPros in the machine. The firewall has to run under Red Hat, so I started downloading Red Hat 7.2. I learned a neat trick.

First, an old trick. Never download with a web browser. Use the command-line app wget instead. It’s faster. The syntax is really simple: wget url. Example: wget http://www.linuxiso.org/download/rh7.2-i386-disc1.iso

Second trick: Download your ISOs off linuxiso.org. It uses some kind of round-robin approach to try to give you the least busy of several mirrors. It doesn’t always work so well on the first try. The mirror it sent me to first was giving me throughput rates that topped out at 200KB/sec., but frequently dropped as low as 3KB/sec.Usually they stayed in the 15MB/sec range. I cancelled the transfer (ctrl-c) and tried again. I got a mirror that didn’t fluctuate as wildly, but it rarely went above the 20MB/sec. range. I cancelled the transfer again and got a mirror that rarely dropped below 50MB/sec and occasionally spiked as high as 120MB/sec. Much better.

Third trick (the one I learned today): Use wget’s -c option. That allows wget to resume transfers. Yep, you can get the most important functionality of a download manager in a 147K binary. It doesn’t spy on you either. That allowed me to switch mirrors several times without wasting the little bit I’d managed to pull off the slow sites.

Fourth trick: Verify your ISOs after you download them. LinuxISO provides MD5 sums for its wares. Just run md5sum enigma-i386-disc1.iso to get a long 32-character checksum for what you just downloaded. If it doesn’t match the checksum on the site, don’t bother burning it. It might work, but you don’t want some key archive file (like, say, the kernel) to come up corrupt. Even though CD-Rs are dirt cheap these days and high-speed burners make quick work of them, there’s still no point in unnecessarily wasting 99 cents and five minutes on the disc and half an hour on a questionable install.

As for downloading the file in separate pieces like Go!Zilla does, there’s a command-line Linux program called mget that does it, but it doesn’t follow redirection and it doesn’t do FTP except through a proxy server, so I have a hard time recommending it as a general-purpose tool. When it works, it seems to work just fine. You might try mget, but chances are decent you’ll end up falling back on wget.

It’s a girl!

Dave Farquhar General ,

Jon and Bethany, the recipients of the emergency baby shower last month, had a daughter Monday morning. Her name is Savannah. And that’s all the detail I know.
Bethany’s doctor took her off bedrest just after the first of the year. He estimated the baby’s weight at about 7.5 pounds then. I was talking to Jon then, and he told me about those classes pregnant women take in order to learn how to have a baby. (I know how to say it but absolutely no clue how to spell it, so I won’t embarrass myself any further.) Jon said they told the men that hand massages can really help during pregnancy, but warned not to press on a certain spot on the hand because it can induce labor. I filed that in my useless information bin.

A couple of weeks ago, Jon and Bethany were at a party. Jon mentioned Bethany was ready for the baby at any time. The room was ready, the house baby-proofed, they had a crib–the crib Jon slept in, and all of his ancestors on his dad’s side slept in, because it literally came with them on the boat from Germany. Everything was ready except the baby. I can’t imagine anyone blaming Bethany for being tired of carrying around a 7.5-pound infant inside her. If she were carrying one outside, she could make Jon carry his fair share of the time, after all.

I told Jon I couldn’t believe he’d forgotten about the spot. His eyes lit up. “The spot!” he hissed. He took his left hand in his right and started pressing. “It’s not working!” he hissed, with his trademark diabolical mad-scientist twinkle in his eye. He pointed his left hand at Bethany, like a remote control, and kept pressing. “It’s still not working!” he hissed. Bethany tried to act like she wasn’t paying attention.

A few minutes later, he walked over to Bethany and grabbed her hand. She said something about that feeling good. “Dave reminded me about the spot,” he said, that diabolical look returning.

She didn’t just shoot him one of those looks women make. She shot him The Look. If you’re male, you know exactly what look I’m talking about. If you’re female, imagine your guy trying to patch a leaky tire with the last of your favorite chocolate, then go look in the mirror. “Not now!” she said. Yelled. OK, she half-yelled it. With a really big howl of protest in her voice. You know, smooth fluctuating pitch, going up on the vowel, then down again and trailing off. “Wait until we get home!”

She was ready, but not quite that ready. Jon dropped her hand. He knows what’s good for him.

I talked to Bethany again on Friday. “Everyone tells me it must be a girl,” she said. “It can’t make up its mind.”

I left that comment alone. And I won’t repeat the other thing she said either. It’s one thing when girls say something about girls fluctuating between impatient and stubborn. It’s another thing when guys say it. I left that comment alone too. I just said one thing: “It’s good to be male.” She rolled her eyes at me.

And on Monday, Jan. 28, 2002, Savannah made up her mind. She’s here, and only about a week before her expected due date.

St. Louis secrets

Dave Farquhar St. Louis , , , ,

St. Louis secrets. I have no idea how many of you live in St. Louis or travel to St. Louis or have ever been here. I’m a St. Louis transplant, being a native of Kansas City. Toasted ravioli was odd. I learned to like it pretty quickly (for the unitiated, it’s ravioli that’s been battered and then deep-fried. In these health-conscious days, sometimes you can get it baked instead.)
St. Louis-style pizza, on the other hand… I tolerated it. But real pizza was from New York or Chicago. To get good pizza in St. Louis, you had to go to one of the places that specialized in one of the foreign styles. When I was in college, to get a decent pizza, my dad and I would go to Shakespeare’s, a little hole in the wall (well, now it’s a big hole in the wall) at 9th and Elm streets in Columbia, just on the edge of the MU campus. I remember once, my sophomore year, sitting there with my dad, and he looked off, whimsically in the distance. “I’m gonna miss this place.”

There wasn’t anything remotely like it in St. Louis. Ironically, their sausage and pepperoni was delivered fresh every day from St. Louis. St. Louis knows how to make this stuff–the Italian population here is huge, and the Italian restaurants in St. Louis are to die for–but Imo’s, the most famous place to get St. Louis-style pizza? Forget it. I’d rather stop at the grocery store and get a frozen pizza. Seriously. If you bake it on a baking stone, you’ll get a crisp crust that’s almost as thin, and bettter in every other way. The other big local chains are comparable.

So if you’re ever in St. Louis, skip Imo’s. Skip Cecil Whittaker’s and Elicia’s too. They’re better, but I have a hard time thinking they’re anything special.

I found out this weekend the place to go. It’s called Fortel’s Pizza Den. There are four or five locations, and they don’t advertise a whole lot. Gatermann and I paid it a visit at about 8:30 Saturday night. There were only a couple of emtpy tables when we got there, and when we left an hour later, people were still coming in about as fast as they were leaving. That tells you something. The toppings were extremely fresh, not to mention plentiful, and there was something special about the sauce. I’m not good enough at identifying spices to know what they did with it, but it’s absolutely a cut above anything the national chains like Domino’s and Papa John’s use. St. Louis knows how to make a red sauce, which you’ll know if you visit any of the Italian restaurants here. You wouldn’t know that from Imo’s or Cecil’s. You’ll know it from Fortel’s though.

So if you’re visiting a friend or relative in St. Louis and they want to show you Imo’s, show them Fortel’s instead.

I figured that to get a decent pizza joint in St. Louis, I’d have to open it myself. I’m glad I won’t have to do that now–the thought of owning a restaurant never really appealed to me. And now I don’t have to drive two hours to Shakespeare’s in Columbia to get a first-class pizza either.

Speaking of Italian restaurants, I recommend Zia’s on The Hill. There are pricier restaurants out there, but I’ve never found one that was better. Get a salad, and get their Italian dressing on it. Trust me, you’ll love it. Another hint: They sell it in grocery stores. You can stop at Schnucks or Dierbergs (the two biggest grocery chains here, both run by families who don’t know how to use apostrophes) and buy a case of it to take back with you. You’ll want to.

The Dierberg family is Lutheran. There are lots of Lutherans in St. Louis.

And if you want a goofy souvenir, stop in at Dirt Cheap Beer. There are dozens of convenient locations all around St. Louis. Pick up a six-pack of their house brand. It’ll set you back about $1.75. I won’t ruin your fun by describing the label on it. No, it’s not any classier than the word BEER in solid black block letters on a white can. But it’s a lot funnier. I’ve never been brave enough to drink any of it. One of my rules is to avoid all beer that costs less than Pepsi.

For frozen custard, there’s Ted Drewes on Chippewa. I think 3/4 of the appeal is the atmosphere and nostalgia. But it’s good. The place is always crowded, so I’m not the only one who likes it. Ted Drewes is Lutheran. He doesn’t know how to use apostrophes either. Maybe the Dierberg family taught him.

For the best deli sandwich in the world, there’s Amighetti’s on The Hill. For the second-best deli sandwich in the world, there’s Mom’s Deli on Chippewa. They’re both amazing. (I’m still mad about the Amighetti’s franchise in Crestwood, near where I work, closing. The sandwiches were to die for, and the girl who always worked the counter was really cute, too.) They know how to use apostrophes both places. Must be because they’re not Lutheran.

There’s another place I haven’t checked out yet, but I’ve been ordered to do so at some point. Up in north St. Louis, there’s a joint called Crown Candy. It’s a candy store (they make their own) with an authentic old-fashioned soda fountain. They serve food too, so you can get acceptable lunch fare on your pilgrimage. The milkshakes are supposed to be out of this world.

But if you want good barbecue in Missouri, you still have to go to Kansas City. And if you want good beer from Missouri, skip Anheuser-Busch’s products, which are as smooth as a gravel road. Get a Boulevard. That’s brewed in Kansas City, of course. (You can take Dave out of Kansas City, but you’ll never take the Kansas City out of Dave.)

Tweaking Debian for all it’s worth

Dave Farquhar Linux , , ,

I fell way behind on my Sorcerer Linux box. The thing compiled code for a day trying to keep up, and finally I started questioning the point of it all. Yeah, the kernel and glibc all benefit from having fresh, up-to-date and aggressively-optimized code, but my highly-optimized KDE 2.2 was slow as a dog, and why am I bothering compiling a superfast version of more? So I installed Debian.

But I wanted ReiserFS. So I went and downloaded the special Debian boot floppies that support Reiser. I just let it do an install over the network. The end result was a copy of Debian Testing on my system. Of course I wanted to upgrade to unstable, so I edited /etc/apt/sources.list and changed the occurrences of “testing” to “unstable.”

Next, I wanted the hottest kernel on the block, which happens to be 2.4.17-mjc2. There is no Debian package for that. So I made one. For myself. I’m pretty sure the one I made won’t work on your computer. Here’s what I did, so you can make one that won’t work on my computer.

apt-get install kernel-source-2.4.17

Download the mjc patch to /usr/src

cd /usr/src

ln -s kernel-source-2.4.17 linux

bzcat 2.4.17-2.4.18-pre1-mjc2.patch.bz2 | patch -p0 (substitute the name of the mjc patch you downloaded)

make xconfig

Pick some of the cool new options like the pre-emptible kernel and realtime scheduler

make-kpkg kernel_image

dpkg -i kernel-image-2.4.18pre1-mjc2_i386.deb

echo "kernel-image-2.4.18pre1-mjc2 hold" | dpkg --set-selections

rm /usr/src/linux

I also went into /etc/fstab, found my ReiserFS partitions, and under the (options) heading, I added the notail and noatime options to increase filesystem speed.

How’s it run? I’m about to find out. But even without this stuff, running GNOME apps under IceWM, Debian is awfully fast. I like KDE, but in my experience it’s so much slower than GNOME, at least when GNOME is running in conjunction with IceWM. GNOME apps like Gnumeric and AbiWord load in under 2 seconds, even on a slow hard drive.

Building an inexpensive PC

Dave Farquhar Hardware , , , , ,

Building an inexpensive PC. An old out-of-town friend I don’t hear from often called the other day. He wants to buy a computer and dabble in audio production. Some local guy quoted him $2,500 to build a system. He read me the specs, and all I can say is this guy had better be using Lian-Li cases and PC Power and Cooling power supplies (or I guess I’d settle for high-end Enermax), but I doubt it. I do know he’s using a top-end Athlon XP processor and an Abit motherboard, but he wasn’t pairing it with DDR, so he was totally killing the chip’s performance anyway. For two and a half grand, you’d better be getting DDR, and lots of it.
“You need a 32-meg video card because when the computer is drawing the waveforms, it has to be dead-on. You can’t afford for it to lag,” he said.

I got news for this idiot. When it comes to drawing simple line graphics like a waveform, the ancient ET4000 chipset in my 486 will have no problem keeping up with it. Even if you use a fill to make the waveform look pretty. And that video “card” (it was integrated into my motherboard) had 512K (K, as in kilobytes) of memory. Although anyone who wasn’t born yesterday knows that the amount of memory on a video card has nothing to do with its speed, outside of the realm of 3D gaming. Knowing kids these days, some of them may even know that at birth.

In other words, the guy’s a moron. Either he knows nothing about computers, or he knows how to skimp but he’s not a convincing salesman.

I know for a fact that audio editing doesn’t need a supercomputer. If I can do video editing on a 700 MHz Duron, I know a Duron CPU, paired with a decent supporting cast, is going to be adequate for multitrack audio recording and editing as well.

I asked him how much he could spend. He told me $800, not counting a monitor and the editing card/package. I squirmed. I spent way too much time shopping around. Here’s what I came up with (not counting the operating system):

1 GHz AMD Duron
FIC AZ11 motherboard (on closeout, so it was cheap)
ATI Xpert 2000 Pro AGP video card (with a blazing 32 megs–ahem)
Maxtor D740 20-gig 7200 RPM IDE hard drive
Maxtor D740 60-gig 7200 RPM IDE hard drive
512 MB Crucial PC133 SDRAM
Mitsumi 3.5″ floppy drive
Sony 52X ATAPI CD-ROM
Plextor Plexwriter 12/10/32A CD-RW
Enermax A1QX-6 mid-tower case with Enermax 300W power supply
US Robotics 2977 controller-based PCI modem
Closeout Dell-branded Logitech mouse and Dell-branded keyboard

I told him there are two brands of CD-RW I trust, especially for audio work: re-labeled Plextor, and Plextor. In all honesty, I would have much prefered to build an all-SCSI system, but for this kind of budget, that’s impossible. All-SCSI would have given much better disk performance, and it would have given access to the Plextor UltraPlex 40max CD-ROM, which is the only drive I trust for extracting digital audio. I imagine he’ll be doing a little of that. The Sony drive will do a decent job, but I’ve seen the Plextor work miracles. But the Plextor is $100, while the Sony cost around $25. I’ll definitely take a Sony over a Cyberdrive or Lite-On (which probably would have run $19).

I couldn’t get PC Power and Cooling on this budget. The price on the Enermax combo was good (less than a PCP&C 300W power supply alone) and the quality is respectable. The Japanese steel is a little lighter gauge than I prefer, but I didn’t cut myself on it. The fit is good, and it’s a good-looking case. Not show-off good like Lian-Li, but better-looking than most of the stuff in its price range. The cobalt blue trim compliments the lettering on the Plextor drive.

Finding a place to put the hard drives is a bit of a challenge. Modern 7200-rpm drives don’t run very hot, but I still don’t want them running directly above one another. I finally settled on putting a drive in the lowest 3.5″ bay and the other in the lowest 5.25″ bay.

The USR 2977 is the secret weapon here. A $20 no-name Winmodem would be a royal pain to set up, and chew up lots of CPU cycles. The 2977 was under $50 and won’t be a load on the system. That’s a speed trick I’m sure that local guy doesn’t know.

The 1 GHz Duron is still overkill, but that’s the slowest chip I could talk him into. I was starting to get annoyed with him. I don’t just know about computer speed, I literally wrote the book on computer speed, and my friend didn’t know what I was talking about when I said something about a boot floppy. And this year’s hot chip is next year’s budget chip, so if the budget chip is enough to get the job done this year, you can go buy more CPU next year. Besides, there was no way to cram any more CPU power into this tiny budget, other than sacrificing disk speed, which is more important unless he’s running Windows XP, which he won’t be. (I’ll drive 200 miles and take his computer away from him if he does.)

As for the two drives, any time you do multimedia work, you want to make sure your application and swap file are located on one drive, and the audio you’re working with is on a second drive. I probably could have gotten by with a 5400-rpm drive to hold the OS, but there isn’t much price difference between a 5400 RPM 20-gig drive and a 7200.

As for how the system runs, I’m sure it’ll smoke. The motherboard isn’t here yet. In all fairness, I ordered it Monday and it was shipped UPS Ground from California on Tuesday.

I ordered the motherboard from Just Deals and the memory came from Crucial. The rest of the stuff came from Directron and New Egg, who as always gave me great prices and fast delivery.

Utility infielder

Dave Farquhar General , ,

My phone rang early Thursday morning. It was my boss again.
“Can you take a look at the RAS server? I’m tied up in meetings all day so I won’t have a chance to fix it myself.”

The RAS server is a small beige Lucent box. I’d dealt with it on the client side far too many times. I don’t understand the appeal of 28.8 dialup with only five lines, but I guess if you don’t want to pay for Internet dialup, it must just be the greatest thing since Linux.

So he e-mailed me the configuration of the machine, told me the root password, and I was off. It seems to run some kind of embedded Unix, but the command set is extremely limited. Since people were having problems dialing in, I didn’t want to find it was a hardware problem. Using US Robotics Sportster modems, I wasn’t going to rule that out. The Sportster was the best consumer-grade modem out there, but the Courier was professional. Nothing compares to a Courier.

I knew of a couple of US Robotics Courier v.32 modems in the back room. So I plundered them, brought them back to my desk, and started configuring. Then I realized why those modems were in the back room. The v.32 standard was 14.4. It didn’t matter if those old Couriers connected every single time–nobody was going to be happy with 14.4 dialup. So I piled the Couriers–each about the size of a modern laptop, along with a good-sized external power brick–on a corner of my desk and started looking at what I had.

After playing around for an hour or so, I was able to figure out how to get the status and configuration of the modems. And I almost immediately found the problem. The first person to dial in always had problems. Well, the modem on port 0 wouldn’t hold its configuration. I plugged my laptop into an analog phone line. It connected, first try. My modem just didn’t seem to care. I disconnected, and went into the back room. I checked to make sure all the modems were identical and had identical DIP switch settings. Indeed they did. I traced the cables. Nothing looked bad. The modem lights looked fine too.

I played with it all day. It was a true misadventure. Eventually I figued out the modem on port 0 wasn’t responding because there was no modem on port 0. I dialed in and stayed dialed in for a couple of hours. Catching up on e-mail and going to random Web sites at 28.8 wasn’t exactly a delight. Eventually I figured out that we were using an init string for USR v.32 (14.4) and not v.34 (28.8/33.6) modems. The difference was slight: the 14.4 string set register S0 to 1. The 28.8 string didn’t. I had someone who’d been having problems dial in. No problems. And she got better speed than ever before. I couldn’t believe it. Over the S0 register? Why would that make a difference? But if anyone knows modems inside and out, it’s Lucent. Not only do they make tons and tons of modem chipsets, they also make the equipment that all of them have to use to communicate, so while no one’s seen everything, they’ve probably seen more than everyone else. And init strings have always been a black art.

So I left, satisfied. I played out of position, but I found the problem. At least I found a problem, and my solution sounded plausible. My first day troubleshooting a piece of networking infrastructure looked successful.

It’s the best of times, it’s the worst of times…

Dave Farquhar General , , , , , , ,

I hate arguing with women. When guys fight, they fight hard, and they don’t always fight fair, but when the fight’s over, it’s pretty much over. You settle it. Maybe you seethe for a little bit. But eventually, assuming you both still can walk, you can go to hockey games together almost like it never happened.
I’ve found myself in an argument. It’s not like an argument with a guy. Every time I think it’s over, it flares back up. It’s like fighting the hydra. (I don’t know if this is characteristic of arguments with women in general; I generally don’t seek out that experience.)

I found one solution though: Don’t open my inbox.

That worked for me once. After 8 months, she finally quit e-mailing me.

Found on a mailing list. I’m assuming this guy mistyped this:

“I need hell with my installation.”

Some smart aleck responded before I did. “Usually you get that with installation whether you want it or not. Now someone’s demanding it. Newbies, these days.”

I was going to say that if you ran Windows, you’d get that free of charge. (That’s the only thing Microsoft gives you for free!)

A cool phone call. My phone rings at work. Outside call. Don’t tell me she somehow got my number at work… I pick up. “This is Dave.”

“Dave, it’s Todd.”

Ah, my boss. Good thing I picked up, eh?

“You busy?”

When it’s your boss, there is absolutely no right answer to that question. One of my classmates in college told me something worth remembering, though: The truth’s always a lot easier to remember than a lie.

“We can’t come to the phone right now. Please leave a message at the beep.”

Nope. Too late for that.

“Not really,” I say, hoping I won’t regret it. Either he’s gathering data for my personal review, or he’s about to ask me to install Mac OS X on a Blue Dalmation iMac with 32 megs of RAM (speaking of wanting hell with installation…)

Actually he asks me for something pretty cool. He asks if I was up to learning some firewalling software. (No, I won’t tell you which one. And no, I won’t tell you who I work for. That’s like saying, “Hey, l337 h4xx0r5! You can’t get me!)

But I will tell you the IP address. It’s 127.0.0.1. If you can crack that address, you deserve whatever you can get. (No comments from the Peanut Gallery.)

So I hit the books. Thanks to this duty, I get another Linux box. I’ve got a Power Mac running Debian already, which runs scripts that are impossible on NT. It monitors the LAN and reformats some reports and e-mails them to my boss and co-workers at 6 every morning. But the management software runs under NT 4, Red Hat Linux, or Solaris. None of that’ll run on a PowerPC-based machine. So I lay claim to an old system that I happen to know has an Asus motherboard in it, along with 72 megs of RAM. I’ll have fun tweaking that system out. An Asus mobo, a Pentium-class CPU, and a Tulip network card. That’s not the makings of a rockin’ good weekend, but it’ll make for a reliable light-use workstation.

While the management software runs under Red Hat, some of the infrastructure is BSD-based. So I get to learn some BSD while I’m at it. As long as BSD is sane about /proc and /var/log, I’ll be in good shape. But I heard LSD was invented at Berkeley, so I may have a little learning to do… Maybe listening to some Beatles records while administering those systems would help.

Much ado about nothing and other stuff

Dave Farquhar General , , , , , , , , , ,

Much ado about nothing. The most recent report I read indicates that AOL/Time Warner and Red Hat are talking, but not about an acquisition. Sanity has entered the building…
Good thing User Friendly got a chance to get its two cents’ worth in. I got a couple bucks’ worth of laughter from it.
Much ado about something. On Sunday, Gentoo Linux developer Daniel Robbins announced that an obscure AMD Athlon bug slipped past Linux kernel developers, resulting in serious problems with Athlon- and Duron-based systems with AGP cards. This confirms some suspicions I’ve heard–one of the Linux mailing lists I subscribe to occasionally has rumblings about obscure and difficult-to-track-down Athlon problems.

The result was that Gentoo’s site was slashdotted into oblivion for a while, but hopefully it also resulted in some extra exposure for the distribution. Gentoo is another source-based distro. Lately I’ve been resigned to just using Debian to build my Linux boxes, but I’m still awfully fond of the idea of compiling your own stuff. As CPUs get faster and faster, I expect that to become more commonplace.

But I digress. The bug involves the CPU’s paging function. Older x86 CPUs used 4K pages. Starting with the Pentium, CPUs started allowing 4MB pages. But a bug in the Athlon’s implementation of this extended paging causes memory corruption when used in conjunction with an AGP cards.
Alan Cox is working on a workaround. I’m a bit surprised a patch isn’t already out there.

CPU bugs are discovered all the time, but it’s fairly rare for them to be serious. If you ever run across a Pentium-60 or Pentium-66 system, boot up Linux on it sometime and run the command dmesg. You’ll find workarounds for at least two serious bugs. A TI engineer named Robert Collins gained a fair bit of notoriety in the last decade by researching, collecting, and investigating CPU bugs. Part of it was probably due to his irreverant attitude towards Intel. (As you can see from this Wayback machine entry.) Sadly, I can’t find the story on the site anymore, since he was bought out by Dr. Dobb’s.
Catching up. I haven’t been making my rounds lately. The reason why is fairly obvious. I used my day off yesterday to have lunch with someone from my small group, then when I got home I read the e-mail I absolutely had to read, responded to those that absolutely had to get responses, answered a couple of voice messages, wrote and sent out a couple of other messages, looked up, and it was 5 p.m.

“Alright God,” I muttered. “I just gave the day to Your people. Time to go spend some time with You.” So I whipped out my handy-dandy Today’s Light Bible and read about Moses. Seemed appropriate. The inadequacy and jumping the gun and making excuses, that is. The Biblical “superheroes” were human just like us, and the book doesn’t gloss over that. Today’s Light is designed to divide the Bible into pieces so you can read the whole thing in two years. I can’t decide if I want to get through it in a year or in six months. A few years ago I read it in its entirety in four months, but that pace is a bit much. If you’re willing to spend as much time reading the Bible every day as the average person does watching TV, you can make it through in a few months. But it’s not exactly light reading, and I’m not sure I recommend that pace. If you’re willing to dedicate that kind of time to Bible study you’re probably better served by learning Greek so you can read the New Testament in the original. Then if you’ve still got your sanity you can think about tackling Hebrew.

I finally got around to reading Charlie Sebold’s entries for the last few days. One especially poignant observation: “I continue to be surprised at how much I remember about computers, and how much I forget about everything else (including far more important things).”

I sure can relate. I wish I could trade everything I remember about IBM PS/2s and Microchannel for something more useful. But I remember goofy baseball statistics too–I can recite the starting lineup and pitching rotation of the 1980 Kansas City Royals (I’ll spare you). But I can’t tell you the names of all seven people I met Sunday night.

Who put me in charge?

Dave Farquhar General

I just had to say no to someone. I didn’t want to say no. But the timing wasn’t right for everyone else. I’ve got someone here with some leadership ability but we’re going to have to sit on it for a little while longer. I don’t like that much. The other person doing the waiting really doesn’t like that much.
I think I liked things better when I had a mentor, and my mentor was the one who made the decisions and delivered the bad news. Now I don’t have a mentor, I still don’t make the decisions (because I refuse to unilaterally make decisions that affect dozens of people just because some outsider decided it would be a good idea to make me a de facto leader), and I deliver the bad news.

I like my Washington-style approach of getting tons of conflicting opinions, sorting through them, and then trusting that I have more wisdom than a garden-variety guinea pig and calling it a decision. It empowers people and it minimizes my lunkhead moves. It’s not the best approach for everyone but it works well for me. So I won’t change that.

I think I need a mentor, and the first thing I want to learn from that mentor is how to deliver bad news.