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    context 'performance' do
      before do
        require 'benchmark'
        @posts = []
        @users = []
        8.times do |n|
          user = Factory.create(:user)
          @users << user
          aspect = user.aspects.create(:name => 'people')
          connect_users(@user, @aspect0, user, aspect)

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# post_loc.txt contains the json you want to post
# -p means to POST it
# -H adds an Auth header (could be Basic or Token)
# -T sets the Content-Type
# -c is concurrent clients
# -n is the number of requests to run in the test

ab -p post_loc.txt -T application/json -H 'Authorization: Token abcd1234' -c 10 -n 2000 http://example.com/api/v1/locations/

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Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

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class DevelopmentProfiler
  
  def self.prof(file_name)
    
    RubyProf.start
    yield
    results = RubyProf.stop
    
    # Print a flat profile to text
    File.open "#{Rails.root}/tmp/performance/#{file_name}-graph.html", 'w' do |file|

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#!/usr/bin/env python

import threading, logging, time

from kafka import KafkaConsumer, KafkaProducer

class Producer(threading.Thread):
    daemon = True

    def run(self):

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from kafka import KafkaConsumer

consumer = KafkaConsumer(bootstrap_servers='localhost:9092',
                         auto_offset_reset='earliest')
                         
while True:
    requested_data = consumer.poll()
    if len(requested_data) > 0:
        print requested_data

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import pika

connection = pika.BlockingConnection(pika.ConnectionParameters(host='localhost'))
channel = connection.channel()
channel.queue_declare(queue='ad_accounts', durable=True)

def process_ad_accounts(ch, method, properties, body):
    print(" [x] Received %r" % body)
    print body
    print(" [x] Done")

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In this article, I will share some of my experience on installing NVIDIA driver and CUDA on Linux OS. Here I mainly use Ubuntu as example. Comments for CentOS/Fedora are also provided as much as I can.

Table of Contents

• Install NVIDIA Graphics Driver via apt-get
• Install NVIDIA Graphics Driver via runfile
  • Remove Previous Installations (Important)
  • Download the Driver
  • Install Dependencies
  • Creat Blacklist for Nouveau Driver

• Stop lightdm/gdm/kdm

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