pavel-odintsov

#!/bin/bash

# from http://habrahabr.ru/post/108240/
ncpus=`grep -ciw ^processor /proc/cpuinfo`
test "$ncpus" -gt 1 || exit 1

n=0
for irq in `cat /proc/interrupts | grep eth | awk '{print $1}' | sed s/\://g`
do
    f="/proc/irq/$irq/smp_affinity"

djspiewak

Git DMZ Flow

I've been asked a few times over the last few months to put together a full write-up of the Git workflow we use at RichRelevance (and at Precog before), since I have referenced it in passing quite a few times in tweets and in person. The workflow is appreciably different from GitFlow and its derivatives, and thus it brings with it a different set of tradeoffs and optimizations. To that end, it would probably be helpful to go over exactly what workflow benefits I find to be beneficial or even necessary.

• Two developers working on independent features must never be blocked by each other
  • No code freeze! Ever! For any reason!
• A developer must be able to base derivative work on another developer's work, without waiting for any third party
• Two developers working on inter-dependent features (or even the same feature) must be able to do so without interference from (or interfering with) any other parties
• Developers must be able to work on multiple features simultaneously, or at lea

dvv

------------------------------------------------------------------------------
-- Redis publication
--
-- LICENCE: http://opensource.org/licenses/MIT
-- Vladimir Dronnikov <dronnikov@gmail.com>
------------------------------------------------------------------------------

local db = assert(require("resty.redis"):new())
db:set_timeout(1000) -- 1000 sec
assert(db:connect("127.0.0.1", 6379))

namuol

rage-quit support for bash

HOW TO INSTALL

Put flip somewhere in your $PATH and chmod a+x it.

Copy fuck into ~/.bashrc.

lelandbatey

Description

This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.

The script is here:

#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"

Results

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

josiahcarlson

'''
redis_simple_chat.py

Written June 24, 2011 by Josiah Carlson
Released under the GNU GPL v2
available: http://www.gnu.org/licenses/gpl-2.0.html

Other licenses may be available upon request.

mascarenhas

#!/usr/bin/env lua

-- Example application for the FastCGI handler with helper threads

local fastcgi = require "thfcgi"

local hello = {}

local heartbeat = [[
  local zmq = require "zmq"

stevedonovan

local function out_of_range(i,n)
    if type(i) == 'number' then
        if i > 0 and i <= n then return true
        else error('out of range',3)
        end
    else
        error 'cannot index array by non-number type'
    end
end