Go Performance Tales
The last few months I've had the pleasure of working on a new bit of intake processing at Datadog. It was our first production service written in Go, and I wanted to nail the performance of a few vital consumer, processing, and scheduling idioms that would form the basis for future projects. I wrote…
Hasnain says:
This is a really insightful article. Especially:
"A quick grep aes /proc/cpuinfo showed that the aws c1.xlarge box I was on lacked these. After finding another machine in the same class with them, throughput increased by 50-65% and strhash's prominence was drastically reduced in the profiles."
Posted on 2014-04-17T17:03:33+0000
Railroaders' Guide to Healthy Sleep
� A resource from the Division of Sleep Medicine at Harvard Medical School Sponsored by the Federal Railroad Administration, an operating mode of the U.S. Department of Transportation Produced in partnership with WGBH Educational Foundation and the John A. Volpe National Transportation Systems Cente…
Hasnain says:
This is a very helpful resource for everyone with sleeping issues.
Posted on 2014-04-17T01:47:46+0000
http://norvig.com/experiment-design.html
When an experimental study states "The group with treatment X had significantly less disease (p = 1%)", many people interpret this statement as being equivalent to "there is a 99% chance that if I do treatment X it will prevent disease." This essay explains why these statements are not equivalent. F…
Hasnain says:
"Prof. Michael Wigler has a more pessimistic way of putting it (quoted by Natalie Angier): "Most of the time, when you get an amazing, counterintuitive result, it means you screwed up the experiment.""
Worth reading. Norvig concludes with
"By now you should see that much can go wrong between the simple statement of "this result is significant at p=1%." and the conclusion about what that really means. As Darell Huff said, "it is easy to lie with statistics," but as Frederick Mosteller said, "it is easier to lie without them." By scrutinizing experiments against the checklist provided here, you have a better chance of separating truth from fiction."
Posted on 2014-04-16T21:36:54+0000
Google Online Security Blog: Street View and reCAPTCHA technology just got smarter
googleonlinesecurity.blogspot.com
Click to view the original at googleonlinesecurity.blogspot.com
Hasnain says:
Some cool security/vision work. I'm pretty sure their algorithms for CAPTCHAs beat most humans by a wide margin. Which kind of defeats the point of having a CAPTCHA in the first place.
Posted on 2014-04-16T21:05:24+0000
Lens Blur in the new Google Camera app | Research Blog
googleresearch.blogspot.com
http://artyom.me/learning-racket-1
Alternative title: A Haskell Programmer Tries to Learn Racket (a Language from Lisp/Scheme Family), Documenting This New Experience with Quite Unusual Honesty and Diligence, All the While Secretly Plotting to Steal the Good Bits Which Haskell Doesn't Currently Have.
Hasnain says:
This is a good read. Still being updated from what I can tell.
Posted on 2014-04-16T17:17:22+0000
Dart: The World's Smallest Laptop Adapter
One, tiny Dart. Power for all your devices. Perfect for your mobile lifestyle. #TheDart #PerfectlyMobile
Hasnain says:
Now this is something I would pay for in a heartbeat (if only they supported my laptop ...)
Posted on 2014-04-15T21:17:23+0000
How Burrowing Owls Lead To Vomiting Anarchists (Or SF’s Housing Crisis Explained) | TechCrunch
Today, the tech industry is apparently on track to destroy one of the world's most valuable cultural treasures, San Francisco, by pushing out the diverse..
Raising a Moral Child
The tactics are different from those used for encouraging achievement.
How to Lie with Data Visualization | Heap Data Blog
How to Lie with Data VisualizationTeam HeapData visualization is one of the most important tools we have to analyze data. But it’s just as easy to mislead as it is to educate using charts and graphs. In this article we’ll take a look at 3 of the most common ways in which visualizations can be mislea...