jedi4ever

- Tune /etc/ssh/sshd_config

UseDNS no  # Disable DNS lookups
GSSAPIAuthentication no # Disable negotation of slow GSSAPI

don't forget to restart it, use a script provider to set it , or create it with veewee or snapshot it

- Tune Vagrantfile

    vb.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]

mrud

#!/usr/bin/Rscript
# Author: (c) Ulrich Dangel <uli@debian.org>
# License: BSD

library(getopt)

spec = matrix(c(
  'help',     'h', 0, "logical", "Usage information",
  'csv', 'i', 1, "character", "Input csv file",
  'output', 'o', 1, "character", "output file (png)"

zeha

from __future__ import print_function
from contextlib import contextmanager


class DslRunner(object):
    """Runs Python code in the context of a class.

    Public methods will be exposed to the DSL code.
    """

winks

#!/bin/bash
# git bisect job for jenkins, originally by @bashlog

GOOD_BUILD=$(curl 'http://jenkins.example.org:8080/job/BUILDNAME/lastStableBuild/api/json' | sed 's:[{},]:\n:g'|grep '"number":'|sed 's/.*://')
BAD_BUILD=$(($GOOD_BUILD + 1))
curl -f "http://jenkins.example.org:8080/job/BUILDNAME/$BAD_BUILD/api/json" || BAD_BUILD=$(($GOOD_BUILD + 2))
curl -f "http://jenkins.example.org:8080/job/BUILDNAME/$BAD_BUILD/api/json" || BAD_BUILD=$(($GOOD_BUILD + 3))
curl -f "http://jenkins.example.org:8080/job/BUILDNAME/$BAD_BUILD/api/json" || BAD_BUILD=$(($GOOD_BUILD + 4))
curl -f "http://jenkins.example.org:8080/job/BUILDNAME/$BAD_BUILD/api/json" || BAD_BUILD=$(($GOOD_BUILD + 5))
curl -f "http://jenkins.example.org:8080/job/BUILDNAME/$BAD_BUILD/api/json" || BAD_BUILD=$(($GOOD_BUILD + 6))

zeha

#!/usr/bin/env ruby
#
# git config --add hooks.jenkins.giturl <git url you've configured in jenkins>
# git config --add hooks.jenkins.jenkinsurl https://your.jenkins.host/

require 'rubygems'
require "net/http"
require "uri"

repopath = File.expand_path(__FILE__ + '/../../').split('/')

gebi

#!/bin/sh

sv s /etc/service/* |grep -Ev "(: file does not exist)|(: not a directory)"

piscisaureus

Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = git@github.com:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

legumbre

Use magit-ediff to resolve merge conflicts

Use magit-ediff or 'e' on an unmerged item to resolve merge conflicts with ediff. Magit will set up an ediff with three buffers A, B and C. A and B are the original (conflicting) files, and C is the conflicted merge.

Use 'n'/'p' to move to the next/previous conflict, use 'a'/'b' to choose which changes (those in a A or B) should be the ones to keep in the merged file.

You can always just switch to buffer C and edit what the merged version should look like.

mpasternacki

# Trace 'print' statement calls cluttering your test suite output.
#
# It is not that simple to track 'print' statement in Python 2.x - it
# cannot be monkey-patched itself, because it's not a function. So we
# override sys.stdout and check the backtrace when stdout is written
# to.
#
# The overload happens only if TRACE_PRINT environment variable is
# set. By default, only the offending file name and line number is
# printed; if TRACE_PRINT environment variable is set to 'traceback',

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