Rebeca Sarai rsarai

Ryu Firewall

$ sudo mn --topo single,3 --mac --switch ovsk --controller remote -x
*** Creating network

Ghost Links:

	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

	-- psql
	-- \timing on

	-- Creating test data
	CREATE TABLE largetable (id INT NOT NULL, content TEXT);

	INSERT INTO largetable
	SELECT i, 'The Road Not Taken'
	'Two roads diverged in a yellow wood,'
	'And sorry I could not travel both'

	# Yield results asynchronously in python
	# https://stackoverflow.com/questions/23351332/yield-results-asynchronously-in-python-using-multiprocessing-or-twisted
	# https://medium.com/@apbetahouse45/asynchronous-web-scraping-in-python-using-concurrent-module-a5ca1b7f82e4
	# https://stackoverflow.com/questions/22445054/asyncio-yield-from-concurrent-futures-future-of-an-executor
	# https://docs.python.org/3/library/concurrent.futures.html#concurrent.futures.Executor.submit

	import time
	import multiprocessing
	from concurrent.futures import ProcessPoolExecutor

	// ==UserScript==
	// @name Airflow auto-reload
	// @namespace http://tampermonkey.net/
	// @version 0.1
	// @description try to take over the world!
	// @author Rebeca
	// @match http://localhost:3000/*
	// @grant none
	// ==/UserScript==

	import time
	import random

	sorted_array = []
	unsorted_array = []

	for i in range(0, 1000000):
	random_integer = random.randint(0, 1000000)
	unsorted_array.append(random_integer)

	# Celery
	CELERY_SEND_TASK_ERROR_EMAILS = True
	CELERYD_HIJACK_ROOT_LOGGER = False

	LOGGING = {
	'version': 1,
	'disable_existing_loggers': False,
	'root': {
	'level': 'INFO',
	'handlers': ['console', 'sentry'],

	// To present on class, run the following commands
	sudo killall controller
	sudo mn -c

	// terminal
	sudo mn -x --topo single,3 --mac --controller remote --switch ovsk

	// switch root s1
	sudo ovs-vsctl set bridge s1 protocols=OpenFlow13