syrnick

Performance for lazy_load
Instantiate 100 times:   0.000000   0.000000   0.000000 (  0.000336)
Save 100 times:          0.160000   0.010000   0.170000 (  0.189396)
Get 100 times:           0.080000   0.000000   0.080000 (  0.094426)
Get Text 100 times:      0.160000   0.010000   0.170000 (  0.201173)
- should be great

Performance for json
Instantiate 100 times:   0.000000   0.000000   0.000000 (  0.000350)
Save 100 times:          0.050000   0.010000   0.060000 (  0.073780)

syrnick

# Trying to replicate performance issues with DM 1.0
# DM 0.10.2 -> 1.230000   0.110000   1.340000 (  2.535200)
# DM 1.0.2  -> 3.080000   0.190000   3.270000 (  4.842546)
#
require 'rubygems'
require 'dm-core'
require 'dm-migrations'
require 'dm-migrations/migration_runner'
require 'dm-timestamps'
require 'benchmark'

syrnick

# Trying to replicate performance issues with DM 1.0
# DM 1.02:
#   Create: 3.100000   0.180000   3.280000 (  4.758490)
#   Get:    3.720000   0.180000   3.900000 (  5.238979)
# DM 0.10:
#   Create: 1.200000   0.100000   1.300000 (  2.411933)
#   Get:    2.540000   0.130000   2.670000 (  3.465188)
###

require 'rubygems'

syrnick

# Example of our problems with to_json( :to_json => false )                                                                                                                                                                                          


require 'rubygems'
require 'dm-core'
require 'dm-migrations'
require 'dm-migrations/migration_runner'
require 'dm-timestamps'
require 'dm-serializer'
require 'dm-types'

syrnick

Thread.abort_on_exception = true

Thread.new { 
  sleep(1)
  $stderr.puts ">> Baby threw up."
  raise "Barf."
}

$stderr.puts ">> Mommy is listening to the monitor, but she is also drunk."
sleep(5)

syrnick

Taxonomy Code Exercise

Using HTML, CSS, and JavaScript, you will create a tool that allows a user to drill down through a tree of categories and select a final category. The taxonomy data is represented as a tree of categories. A category can have any number of children. A category with no children is considered a selectable category (categories with children should not be selectable).

The taxonomy data is located at https://gist.github.com/935805

syrnick

#!/usr/bin/env python
"""
(C) Alexander Sorokin, 2009
License: BSD
"""

import os,sys, getopt

#This is the default BIN location. You don't need to change it.
#You should use --ag_bin= command line argument to override it.

syrnick

// @flow

declare function SomeFn(): void;

type A = {
    type: 'simple';
    foo: number;
    requiredName: string;
};

syrnick

<--- Last few GCs --->

   15171 ms: Scavenge 943.8 (979.8) -> 935.9 (979.8) MB, 0.2 / 0 ms [allocation failure].
   15269 ms: Mark-sweep 940.1 (980.8) -> 583.1 (624.8) MB, 92.8 / 0 ms [allocation failure] [GC in old space requested].
   15342 ms: Mark-sweep 583.1 (624.8) -> 583.1 (621.8) MB, 72.2 / 0 ms [allocation failure] [GC in old space requested].
   15406 ms: Mark-sweep 583.1 (621.8) -> 583.1 (621.8) MB, 64.2 / 0 ms [last resort gc].
   15469 ms: Mark-sweep 583.1 (621.8) -> 583.0 (621.8) MB, 63.2 / 0 ms [last resort gc].


<--- JS stacktrace --->

syrnick

var lastRun = new Date();
var numFailed = 0;
var numUpdatedTime = 0;
var numChecked = 0;
var numFatalFailures = 0;

setInterval(() => {
    numUpdatedTime++;
    console.log('---------- Update time', new Date().toJSON());
    lastRun = new Date();