djspiewak

Thread Pools

Thread pools on the JVM should usually be divided into the following three categories:

1. CPU-bound
2. Blocking IO
3. Non-blocking IO polling

Each of these categories has a different optimal configuration and usage pattern.

endquote

/*

To use:
* save this script as migrate.js
* fill in the user/pass variables at the top
* save the block of json below as package.json right next to it
* install node.js from nodejs.org
* run 'npm install' from the directory where you saved the files
* run 'node migrate.js'
* profit

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

mikekelly

window.HAL = {}

class HAL.Model extends Backbone.Model
  constructor: (attrs) ->
    super @parse(_.clone attrs)

  parse: (attrs = {}) ->
    @links = attrs._links || {}
    delete attrs._links
    @embedded = attrs._embedded || {}