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|
#!/usr/bin/env ruby
#
# gen.rb: Benchmark OpenSSL ciphers on several systems, then do
# the following:
#
# * aggregate the results as CSV files
# * create SVG charts of the results
# * generate HTML fragments for the SVG results
#
# Usage: ./gen.rb config.yaml
#
# See included `config.yaml` for configuration options
#
require 'fileutils'
require 'yaml'
require 'csv'
require 'logger'
require 'json'
module Tentacle
# block sizes
SIZES = %w{16 64 256 1024 8192 16384}
#
# list of tests to run.
#
TESTS = [{
name: 'lscpu',
exec: %w{lscpu},
}, {
name: 'version',
exec: %w{openssl version},
}, {
name: 'speed',
exec: %w{openssl speed -mr -evp},
type: 'algos', # run test for each algorithm
}]
#
# Default list of EVP algorithms.
#
# removed sha3-256 because it is not supported in older versions of
# openssl
ALGOS = %w{
blake2b512
blake2s256
sha256
sha512
aes-128-cbc
aes-192-cbc
aes-256-cbc
}
#
# Map of type to column headers.
#
# Used to generate CSV and HTML table column headers.
#
COLS = {
all: [{
id: 'host',
name: 'host',
}, {
id: 'algo',
name: 'algo',
}, {
id: 'size',
name: 'size',
}, {
id: 'speed',
name: 'speed',
}],
algo: [{
id: 'host',
name: 'host',
}, {
id: 'size',
name: 'size',
}, {
id: 'speed',
name: 'speed',
}],
# columns for csvs/hosts.csv and html/hosts.html
hosts: [{
id: 'name',
name: 'Name',
}, {
id: 'arch',
name: 'Architecture',
}, {
id: 'text',
name: 'Description',
}],
}.freeze
#
# Architecture titles format strings.
#
ARCH_TITLES = {
all: 'OpenSSL Speed: All Systems, %s',
arm: 'OpenSSL Speed: Raspberry Pis, %s',
x86: 'OpenSSL Speed: x86-64, %s',
}
HTML = {
all: %{
<table class='table table-hover'>
<thead>
<tr>%s</tr>
</thead>
<tbody>
%s
</tbody>
</table>
}.strip,
col: %{
<th>%s</th>
}.strip,
row: %{
<tr>%s</tr>
}.strip,
cell: %{
<td>%s</td>
}.strip,
svg: %{
<p><img
src="%s"
width="100%%"
height="auto"
title="%s"
alt="%s"
/></p>
}.strip,
}.freeze
module BG
#
# Generate SSH command.
#
def ssh(host, cmd)
['/usr/bin/ssh', host, *cmd]
end
#
# Spawn background task that writes output to given file and return
# the PID.
#
def bg(out, cmd)
@log.debug('bg') do
JSON.unparse({
out: out,
cmd: cmd,
})
end
spawn(*cmd,
in: '/dev/null',
out: out,
err: '/dev/null',
close_others: true
)
end
end
class HostQueue
include BG
def self.run(log, queues)
new(log, queues).run
end
def initialize(log, queues)
@log, @queues = log, queues
@pids = {}
end
#
# Run until all commands have been run successfully on all hosts, or
# until any command on any host fails.
#
def run
@queues.keys.each do |host|
drain(host)
end
until done?
@log.debug('HostQueue#run') do
'Process.wait(): %s ' % [JSON.unparse({
pids: @pids,
queues: @queues,
})]
end
# get pid and status of child that exited
pid = Process.wait(-1, Process::WUNTRACED)
st = $?
# map pid to host
if host = @pids.delete(pid)
if st.success?
# log success
@log.debug('HostQueue#run') do
'command done: %s' % [JSON.unparse({
host: host,
pid: pid,
})]
end
else
# build error message
err = 'command failed: %s' % [JSON.unparse({
host: host,
pid: pid,
})]
# log and raise error
@log.fatal('HostQueue#run') { err }
raise err
end
# start next command from host
drain(host)
end
end
end
private
#
# Start next queued command from given host.
#
def drain(host)
# get queue for host
queue = @queues[host]
return unless queue && queue.size > 0
# drain host queue of commands that can be skipped
while queue.size > 0 && File.exists?(queue.first[:out])
@log.debug('HostQueue#drain') do
'skipping command: %s' % [JSON.unparse({
host: host,
row: queue.first
})]
end
# remove skipped command
queue.shift
end
if row = queue.shift
# invoke task, grab pid
pid = bg(row[:out], ssh(host, row[:cmd]))
# log task
@log.debug('HostQueue#drain') do
JSON.unparse({
host: host,
row: row,
pid: pid,
})
end
# add pid to pid to host map
@pids[pid] = host
end
nil
end
def done?
@pids.size == 0 && @queues.keys.all? { |k| @queues[k].size == 0 }
end
end
class Runner
include BG
#
# Allow one-shot invocation.
#
def initialize(config)
# cache config
@config = config
# get log level
log_level = (@config['log_level'] || 'info').upcase
# create logger and set log level
@log = ::Logger.new(STDERR)
@log.level = ::Logger.const_get(log_level)
@log.debug { "log level = #{log_level}" }
end
#
# Run benchmarks (if necessary) and generate output CSVs and SVGs.
#
def run
# create output directories
make_output_dirs
# connect to hosts in background, wait for all to complete
spawn_benchmarks
# generate CSVs, SVGs, and HTML fragments, wait for all to
# complete
save(parse_data)
# generate hosts.{html,csv}
save_hosts.each { |t| t.join }
end
private
#
# Create output directories
#
def make_output_dirs
dirs = (%w{html csvs svgs} + @config['hosts'].map { |row|
'hosts/%s' % [row['name']]
}).map { |dir|
'%s/%s' % [out_dir, dir]
}
@log.debug { 'creating output dirs: %s' % [dirs.join(', ')] }
FileUtils.mkdir_p(dirs)
end
#
# Spawn benchmarks in background and return a list of PIDs.
#
def spawn_benchmarks
# build map of hosts to commands
queues = @config['hosts'].reduce(Hash.new do |h, k|
h[k] = []
end) do |r, row|
TESTS.reduce(r) do |r, test|
case test[:type]
when 'algos'
# queue test command for each algorithm
(@config['algos'] || ALGOS).reduce(r) do |r, algo|
r[row['host']] << {
cmd: [*test[:exec], algo],
out: '%s/hosts/%s/%s-%s.txt' % [
out_dir,
row['name'],
test[:name],
algo,
],
}
r
end
else
# queue command for test
r[row['host']] << {
cmd: test[:exec],
out: '%s/hosts/%s/%s.txt' % [
out_dir,
row['name'],
test[:name],
]
}
r
end
end
end
# block until all tasks have exited
HostQueue.run(@log, queues)
end
#
# Parse openssl benchmark data into a map of algorithm => rows
#
def parse_data
@config['hosts'].reduce(Hash.new do |h, k|
h[k] = Hash.new do |h2, k2|
h2[k2] = { max: 0, rows: [] }
end
end) do |r, row|
# build absolute path to openssl speed data files
glob = '%s/hosts/%s/speed-*.txt' % [out_dir, row['name']]
# parse speed files
Dir[glob].each do |path|
# get arch
arch = row['pi'] ? 'arm' : 'x86'
# parse file
lines = File.readlines(path).select { |line|
# match on result rows
line =~ /^\+F:/
}.each do |line|
# split to results
vals = line.strip.split(':')
# build algorithm name
algo = vals[2].gsub(/\s+/, '-')
# walk block sizes
SIZES.each_with_index do |size, i|
[{
algo: 'all',
arch: 'all',
}, {
algo: algo,
arch: 'all',
}, {
algo: 'all',
arch: arch,
}, {
algo: algo,
arch: arch,
}].each do |agg|
val = vals[i + 3].to_f
max = r[agg[:arch]][agg[:algo]][:max]
r[agg[:arch]][agg[:algo]][:max] = val if val > max
r[agg[:arch]][agg[:algo]][:rows] << if agg[:algo] == 'all'
# build row for all-*.csv
[row['name'], algo, size, val]
else
# row for algo-specific CSV
[row['name'], size, val]
end
end
end
end
end
r
end
end
#
# Generate CSVs, SVGs, and HTML fragments, then wait for them all
# to complete.
#
def save(all_data, &block)
# build svg lut
svgs = Hash.new { |h, k| h[k] = [] }
# generate csvs and svgs, then wait for them to complete
join('save', all_data.reduce([]) do |r, pair|
arch, algo_hash = pair
algo_hash.reduce(r) do |r, pair|
algo, data = pair
# save csv
csv_path = save_csv(arch, algo, data[:rows])
if algo != 'all'
# start building svg
max = get_max_value(all_data, arch, algo)
row = save_svg(arch, algo, max, csv_path)
r << row[:pid]
# add to svg lut
svgs[arch] << {
algo: algo,
svg: row[:svg],
title: row[:title],
}
end
# return pids
r
end
end)
# generate html fragments for svgs
save_html(svgs)
end
#
# Generate HTML fragments for each architecture.
#
def save_html(svgs)
svgs.each do |arch, rows|
# build path to html fragment
path = '%s/html/%s.html' % [out_dir, arch]
# write html
File.write(path, rows.sort { |a, b|
a[:svg] <=> b[:svg]
}.map { |row|
svg_path = '../svgs/%s' % [File.basename(row[:svg])]
HTML[:svg] % [svg_path, row[:title], row[:title]]
}.join)
end
end
#
# Generate CSV and HTML table of hosts and return array of threads.
#
def save_hosts
[save_hosts_csv, save_hosts_html]
end
#
# Generate out/csvs/hosts.csv and return thread.
#
def save_hosts_csv
Thread.new do
# build csv path
path = '%s/csvs/hosts.csv' % [out_dir]
# save CSV
CSV.open(path, 'wb') do |csv|
# write headers
csv << COLS[:hosts].map { |col| col[:name] }
# write rows
@config['hosts'].each do |row|
csv << COLS[:hosts].map { |col| row[col[:id]] }
end
end
end
end
#
# Generate out/html/hosts.html and return thread.
#
def save_hosts_html
Thread.new do
# build html path
path = '%s/html/hosts.html' % [out_dir]
# generate and save html
File.write(path, HTML[:all] % [
COLS[:hosts].map { |col|
HTML[:col] % [col[:name]]
}.join,
@config['hosts'].map { |row|
HTML[:row] % [COLS[:hosts].map { |col|
HTML[:cell] % [row[col[:id]]]
}.join]
}.join,
])
end
end
#
# save CSV of rows.
#
def save_csv(arch, algo, rows)
# build path to output csv
csv_path = '%s/csvs/%s-%s.csv' % [out_dir, arch, algo]
# write csv
CSV.open(csv_path, 'wb') do |csv|
# write column headers
csv << COLS[(algo == 'all') ? :all : :algo].map { |col| col[:id] }
# write rows
rows.each do |row|
csv << row
end
end
# return csv path
csv_path
end
#
# Render CSV as SVG in background and return SVG and PID.
#
def save_svg(arch, algo, max, csv_path)
plot_path = '%s/plot.py' % [__dir__]
svg_path = '%s/svgs/%s-%s.svg' % [out_dir, arch, algo]
# make chart title
title = ARCH_TITLES[arch.intern] % [algo]
# calculate xlimit (round up to nearest 100)
# xlimit = ((algo =~ /^aes/) ? 400 : 2000).to_s
xlimit = (max / (1048576 * 50.0)).ceil * 50
# build plot command
plot_cmd = [
'/usr/bin/python3',
plot_path,
csv_path,
svg_path,
title,
xlimit.to_s,
]
# return svg path and pid
{
# create svg in background
pid: bg('/dev/null', plot_cmd),
svg: svg_path,
title: title,
}
end
#
# get maximum value depending for chart
#
def get_max_value(data, arch, algo)
is_aes = is_aes?(algo)
data['all'].keys.select { |k|
is_aes == is_aes?(k)
}.map { |k|
data[arch][k][:max]
}.reduce(0) { |rm, v|
v > rm ? v : rm
}
end
#
# Is the given algorithm AES?
#
def is_aes?(algo)
@is_aes_cache ||= {}
@is_aes_cache[algo] ||= !!(algo =~ /^aes/)
end
#
# join set of PIDs together
#
def join(set_name, pids = [])
@log.debug('join') do
JSON.unparse({
set_name: set_name,
pids: pids,
})
end
# wait for all tasks to complete and check for errors
errors = pids.reduce([]) do |r, pid|
Process.wait(pid)
$?.success? ? r : (r << pid)
end
if errors.size > 0
# build error message
err = 'pids failed: %s' % [JSON.unparse({
set_name: set_name,
pids: errors,
})]
# log and raise error
@log.fatal('join') { err }
raise err
end
end
#
# Get output directory.
#
def out_dir
@config['out_dir']
end
end
#
# Allow one-shot invocation.
#
def self.run(app, args)
# check command-line arguments
unless config_path = args.shift
raise "Usage: #{app} config.yaml"
end
Runner.new(load_config(config_path)).run
end
#
# Load config file and check for required keys.
#
def self.load_config(path)
# read/check config
::YAML.load_file(path).tap do |r|
# check for required config keys
missing = %w{out_dir hosts}.reject { |key| r.key?(key) }
raise "Missing required config keys: #{missing}" if missing.size > 0
end
end
end
# allow cli invocation
Tentacle.run($0, ARGV) if __FILE__ == $0
|