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# frozen_string_literal: true | |
source "https://rubygems.org" | |
git_source(:github) {|repo_name| "https://github.com/#{repo_name}" } | |
gem "esa" |
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#!/usr/bin/env bash | |
# memusg -- Measure memory usage of processes | |
# Usage: memusg COMMAND [ARGS]... | |
# | |
# Author: Jaeho Shin <[email protected]> | |
# Created: 2010-08-16 | |
############################################################################ | |
# Copyright 2010 Jaeho Shin. # | |
# # | |
# Licensed under the Apache License, Version 2.0 (the "License"); # |
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require 'rake' | |
Table = Struct.new(:name, :comment, :columns, :indexes) | |
Column = Struct.new(:name, :type, :not_null, :default, :primary_key, :comment) | |
Index = Struct.new(:name, :columns, :primary, :unique) | |
def get_schema_info(klass) | |
table = Table.new | |
table.name = klass.table_name | |
table.columns = [] |
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// Use Gists to store code you would like to remember later on | |
console.log(window); // log the "window" object to the console |
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require 'rake' | |
require 'rspec/core/rake_task' | |
require 'yaml' | |
require 'highline/import' | |
properties = YAML.load_file('properties.yaml') | |
ENV['SSH_USER'] = ask("Enter ssh user: ") { |q| q.echo = true } | |
ENV['SSH_PASSWORD'] = ask("Enter ssh password: ") { |q| q.echo = false } |
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#!/usr/bin/env python | |
# -*- coding: utf-8 -*- | |
import logging | |
import sys | |
import os.path | |
import bz2 | |
from gensim.corpora import WikiCorpus | |
from gensim.corpora.wikicorpus import filterWiki |
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#!/usr/bin/env ruby | |
# -*- coding: utf-8 -*- | |
require 'timers' | |
timers = Timers.new | |
logs = [] | |
logs << [] | |
logs << [] |
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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 | |
Send 1K bytes over 1 Gbps network 10,000 ns 0.01 ms | |
Read 1 MB sequentially from memory 250,000 ns 0.25 ms | |
Round trip within same datacenter 500,000 ns 0.5 ms | |
Read 1 MB sequentially from SSD 1,000,000 ns 1 ms 4X memory |
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