Sébastien Arnaud arnaudsj

Korny Sietsma, Pragmatic Performance Testing

quotes

“we don’t care about perf”
“clojure should be fast”
“we’re using mongo!”
“clojure might not be fast enough, we should use type hints”

JMeter

Customize Chromebook Chrosh Shell Environment

Requirement: Chromebook, Common Sense, Commandline Ablity, 1 hour of time

Dear developers with a spare Chromebook lets inject a little personalization into your Crosh shell with custom fonts, the solarized theme, and extra secure shell options.

Also, keep in mind that the terms Chrosh, Chrosh Window, and Secure Shell all refer to various versions and extentions built around the ChromeOS terminal. Settings that affect the ChromeOS terminal are global.

Custom Fonts

Load a Large CSV into Vertica

Here's an efficient way to load a dataset into Vertica by splitting it up into multiple pieces and then parallelizing the load process.

Note that this only makes sense if your Vertica cluster is a single node. If it's running more nodes, there are definitely more efficient ways of doing this.

For this example, the large CSV file will be called large_file.csv. If your file is under 1GB, it probably makes sense to load it using a single COPY command.

FullPie widget

This is a simple widget that lets you render pie charts in Dashing. Forked from stevenleeg/pie.coffee It looks a little bit like this:

Usage

dashboard.erb:

Should have a Leiningen Clojure project in workspace.

Go up one directory

cd ..

then go to bin directory since this is already in the $PATH

cd bin

	#!/usr/bin/env python
	# -- coding: utf-8 --

	# This is a simplified implementation of the LSTM language model (by Graham Neubig)
	#
	# LSTM Neural Networks for Language Modeling
	# Martin Sundermeyer, Ralf Schlüter, Hermann Ney
	# InterSpeech 2012
	#
	# The structure of the model is extremely simple. At every time step we

	{
	"AWSTemplateFormatVersion": "2010-09-09",
	"Description": "CoreOS on EC2: http://coreos.com/docs/running-coreos/cloud-providers/ec2/",
	"Mappings": {
	"RegionMap": {
	"ap-northeast-1": {
	"AMI": "ami-f9b08ff8"
	},
	"ap-southeast-1": {
	"AMI": "ami-c24f6c90"

	{:user {:dependencies [[org.clojure/tools.namespace "0.2.3"]
	[spyscope "0.1.3"]
	[criterium "0.4.1"]]
	:injections [(require '(clojure.tools.namespace repl find))
	; try/catch to workaround an issue where `lein repl` outside a project dir
	; will not load reader literal definitions correctly:
	(try (require 'spyscope.core)
	(catch RuntimeException e))]
	:plugins [[lein-pprint "1.1.1"]
	[lein-beanstalk "0.2.6"]

	function condalist -d 'List conda environments.'
	for dir in (ls $HOME/miniconda3/envs)
	echo $dir
	end
	end

	function condactivate -d 'Activate a conda environment' -a cenv
	if test -z $cenv
	echo 'Usage: condactivate <env name>'
	return 1