flak rss random

zombie books

I read a bunch of zombie themed novels. Some have lots of zombies, others not so many. Some are real books, some are what I was hoping were the upper echelons of more or less self published work.

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Posted 30 Mar 2013 19:03 by tedu Updated: 23 Jan 2014 21:03
Tagged: bookreview roundup

Snitch

Here’s the setup: Heartless prosecutor offers kid a deal. Take the plea bargain and go to prison for one year. Or go to court and face thirty years. Inspired by true events.

Features Omar as Omar and the Rock as not the Rock.

Posted 21 Mar 2013 07:19 by tedu Updated: 21 Mar 2013 07:19
Tagged: moviereview

counting to 2^63

If you increment a signed 64-bit counter at 1GHz, it will take about 300 years to wrap. 600 years for unsigned.

Posted 20 Mar 2013 02:34 by tedu Updated: 20 Mar 2013 02:34
Tagged: programming

OpenBSD 5.3, now with nscan

OpenBSD 5.3 is coming soon, the order page is up now. I don’t think I made a single commit for this release, which represents a new low. At least things can only get better, I already made a few minor commits for 5.4. One feature that I did hack on but which may go unnoticed because it’s largely invisible is a new disk I/O sorting algorithm. beck@ was the driving force in testing this and pushing me to write the code he wanted. :)

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Posted 18 Mar 2013 22:32 by tedu Updated: 26 Dec 2014 04:49
Tagged: openbsd programming

some mini usb wifi adapters

My HP Mini has an unsupported wireless chipset, so I was in need of a USB adapter. To match the host system, it too must be mini. I started with a Keebox W150NU I had sitting around. Works well with the run driver, but it sticks out a little, so I picked up the B-Link BL-LW05-5R and the Edimax EW-7811Un on the cheap. Both use the urtwn driver.

All of these operate solely in the 2.4GHz band. Local download speeds are generally 1.5-2 MB/s for the Keebox and 2-3 MB/s for the urtwn devices. ifconfig reports the signal strength in dB, but I’m not smart enough to know what that means. No issues with reception moving around between rooms. Occasionally, while using a urtwn device, I’ll see complaints from ehci about such and such not being just right, but it doesn’t appear to affect performance. The Edimax has a glowing blue LED in it, the B-Link has a rather obscured LED on the end. I don’t need another blinkenlight poking me in the eye, so the B-Link wins this round. Amazon tells me I paid $6.70, shipped.

From left to right: Keebox W150NU, B-Link BL-LW05-5R, Edimax EW-7811Un.

Keebox, B-Link, Edimax adapters

Posted 15 Mar 2013 21:45 by tedu Updated: 10 Oct 2014 00:31
Tagged: gadget openbsd

dead code and butterflies

Yesterday, Windows Update decided I won the IE 10 lottery and earned myself a new browser. Then I remembered the IE SunSpider performance scandal (turns out this was for IE 9, my how time flies!) and my own thoughts on the difficulty and fragility of dead code optimizations. For background, the Lies, damned lies, and benchmarks article at Ars is a decent read.

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Posted 13 Mar 2013 16:40 by tedu Updated: 14 Mar 2013 14:00
Tagged: programming thoughts

flak upgrade

The only thing more fun than talking about yourself is talking about the blog platform you use to talk about yourself. I rolled out some flak upgrades today and it almost worked. I did learn one critical lesson about sqlite which may be interesting, after that the post devolves into useless trivia.

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Posted 09 Mar 2013 23:25 by tedu Updated: 21 Apr 2013 05:38
Tagged: flak programming web

it's a hard turk life

I signed up for Amazon’s Mechanical Turk service a little while ago. As a worker. My theory was, I’m sitting around watching Glee, but there’s all this plot and drama stuff I don’t care about happening between the Journey song performances. I could read or code or something, but then I get sucked into that and miss the song. A micro tasklet I could complete in a few seconds sounded like just the thing, and making five cents a minute was five cents more than I normally make watching TV.

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Posted 07 Mar 2013 19:28 by tedu Updated: 07 Mar 2013 19:35
Tagged: business review

magical protection

As part of working on mailtanium, I wrote a basic webapp in Sinatra to check mail on my phone. Sinatra does all sorts of magic for you, as ruby frameworks are prone to do. It’s built on top of Rack, which also does magic things.

I wasn’t fully aware of this until I recently checked my logs and noticed a bunch of entries like this.
W, [2013-03-06T06:01:57.276947 #2149] WARN -- : attack prevented by Rack::Protection::HttpOrigin
Wowza, I’m under attack! No wait, on further inspection, I see one of those every time I send a POST request from my phone. Firefox on my laptop doesn’t seem to trigger it.

What’s happening? I’m not sure. From what I can make of the source for the module, the request should be blocked, but it’s not. Everything still works. The emails I tried to send were, in fact, sent. Maybe Rack’s default config is to only log a warning and not do anything drastic. But why then say the attack was prevented, instead of not prevented?

I think what I need is less magical protection and more protection from magic.

Posted 06 Mar 2013 19:40 by tedu Updated: 11 Apr 2013 21:34
Tagged: bugs mailtanium rants web

I don't want to login to use your app

Following in the line of I don’t want to download your app or the relevant xkcd, I don’t want to login to use your app either. Today, Autodesk released a new version of Socialcam which included HDR video. Love it or hate it, I usually apply some serious HDR effects with Camera+ to my photos so you can tell what you’re looking at. Maybe it doesn’t look all crazy colored like that in real life, but at least you can identify the details. Naturally, I figure this would be cool for video. I at least want to try it out. Download the free app, run it, see a login screen with no way past it. I can’t even take a sample video to see what the effect looks like without signing up. Deleted.

Posted 01 Mar 2013 04:08 by tedu Updated: 01 Mar 2013 04:08
Tagged: rants software