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

mostlygeek

ruby_block "sync_build_from_s3" do
  action :nothing
  block do
    # latest_file contains path to the latest.txt, which lists files to sync
    file = File.new(latest_file, "r");
    run_context = Chef::RunContext.new(node, {})

    #
    # Create the directory to hold the new build files
    #

koush

package com.koushikdutta.nio;

import java.nio.ByteBuffer;
import java.nio.channels.ReadableByteChannel;
import java.util.LinkedList;

import junit.framework.Assert;

public class ByteBufferList {
    private static final String LOGTAG = "Tether";

joelgwebber

import urlparse
from urllib import urlretrieve

base_url = 'http://ngm.nationalgeographic.com/'

urls = [ \
  "/u/H6yMi6fUB_1JR964xxG8RxsYArlNNn1lR5PWutchJ4t_YnYgRQSgSbjtWe2l0Iy-oLGsA9CsqdnrlLhmR0g3rCSzBRF7/", \
  "/u/H6yMi6fUB_1JR964xxG8RxsYArlNNn1lR5PWutchJ4t_Y-BNZaUHGX3GhRGQkkys1pZ0r6MMH1tkBqLFL_pSFt3xA3Oi/", \
  "/u/H6yMi6fUB_1JR964xxG8RxsYArlNNn1lR5PWutchJ4t6VV_HIvlh3DLvd9e4D4G0uBFWsZpxfwWu_TJ9TchpFQyt2qg8/", \
  "/u/H6yMi6fUB_1JR964xxG8RxsYArlNNn1lR5PWutchJ4rkKJOkhh6J27Lg1KkOxF6sBxFqALR33By8KpJ5CndmMknK8Yyx/", \

zaius

ctrl-z
bg

touch /tmp/stdout
touch /tmp/stderr
gdb -p $!

# In GDB
p dup2(open("/tmp/stdout", 1), 1)
p dup2(open("/tmp/stderr", 1), 2)

indy

// JAVA REFERENCE IMPLEMENTATION OF IMPROVED NOISE - COPYRIGHT 2002 KEN PERLIN.

public final class ImprovedNoise {
   static public double noise(double x, double y, double z) {
      int X = (int)Math.floor(x) & 255,                  // FIND UNIT CUBE THAT
          Y = (int)Math.floor(y) & 255,                  // CONTAINS POINT.
          Z = (int)Math.floor(z) & 255;
      x -= Math.floor(x);                                // FIND RELATIVE X,Y,Z
      y -= Math.floor(y);                                // OF POINT IN CUBE.
      z -= Math.floor(z);