Enabling ttyO1 on BeagleBone
I’m really just making this post because I will eventually forget how to do this, and maybe it will come in handy to others as well. Hardware I’ve got an MSP430 reading temperature and humidity information from an RHT03 sensor. It sends the data over a serial port, and I’d like to read that data on my BeagleBone. I have P1.1 and P1.2 on the launchpad connected to pin 24 and 26 on the BeagleBone. P
Aaron Patterson on Twitter: "I am very excited about my new coworkers!!!!! https://t.co/IeOCkErbMa"
I am very excited about my new coworkers!!!!! https://t.co/IeOCkErbMa
Aaron Patterson on Twitter: "草 https://t.co/wKA87oXa3X"
草 https://t.co/wKA87oXa3X
Aaron Patterson on Twitter: "I changed my desktop background https://t.co/bQ5G2zn54k"
I changed my desktop background https://t.co/bQ5G2zn54k
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Speeding up Ruby with Shared Strings
It’s not often I am able to write a patch that not only reduces memory usage, but increases speed as well. Usually I find myself trading memory for speed, so it’s a real treat when I can improve both in one patch. Today I want to talk about the patch I submitted to Ruby in this ticket. It decreases “after boot” memory usage of a Rails application by 4% and speeds up require by about 35%. When I wa
Reducing Memory Usage in Ruby
I’ve been working on building a compacting garbage collector in Ruby for a while now, and one of the biggest hurdles for implementing a compacting GC is updating references. For example, if Object A points to Object B, but the compacting GC moves Object B, how do we make sure that Object A points to the new location? Solving this problem has been fairly straight forward for most objects. Ruby’s ga
Aaron Patterson on Twitter: "大笑いは大草原だから、ちょっと笑うのは庭です、、、ね"
大笑いは大草原だから、ちょっと笑うのは庭です、、、ね
Visualizing Your Ruby Heap
In a previous post, I wrote a bit about how Ruby objects are laid out in memory. Today we’ll use that information to write a program that will allow us to take a Ruby heap dump and visualize the layout and fragmentation of that heap. Ruby Object Layout Recap Just as a recap, Ruby objects are fixed width. That is, every Ruby object is the same size: 40 bytes. Objects are not really allocated with m
Aaron Patterson on Twitter: "草 https://t.co/K3J5JPJT2Y"
草 https://t.co/K3J5JPJT2Y
Aaron Patterson on Twitter: "草 https://t.co/CCpEObby8c"
草 https://t.co/CCpEObby8c
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GitHub - tenderlove/nfc: NFC is a ruby wrapper for the Near Field Communication library.
GitHub - tenderlove/our_pc: Our Procedure Calls
Tender Lovemaking » Blog Archive » Namespaces in XML
GitHub - tenderlove/heapfrag: Heap visualizer for Ruby
Visualizing Your Ruby Heap
GitHub - tenderlove/neversaydie: NeverSayDie will let you rescue from SEGV's and is evil
GitHub - tenderlove/heap-utils: Just random scripts I'm using for Ruby heap info
Aaron Patterson on Twitter: "I learned a new slang in Japanese today: 草生える. I will now explain it"
Aaron Patterson on Twitter: "私も技術顧問になりたい"