mmarchini

Node v6.x runtime --perf-basic-prof toggling

Builds

Linux x86: node-v6.12.3

Linux x64: node-v6.12.3

Docker apline image: docker pull sthima/node-custom-build:toggle-perf-basic-prof (Dockerfile)

mmarchini

Chrome DevTools Heap Snapshot Loading Benchmark

Benchmark of the Chrome DevTools to determine if it can load large Heap Snapshots. Specs of the environment used are available at Environment Specs.

Results

Time to Load is an approximate value, as there's no way (that I'm aware of) to measure the loading time of a heap snapshot in Chrome DevTools.

mmarchini

V8 Heap Snapshot Schema

Key	Description
snapshot	Metadata from the snapshot. See snapshot
nodes	List of heap nodes. See nodes
edges	List of heap edges between nodes. See edges
trace_function_infos	???
trace_tree	???

mmarchini

//
// This file is generated by ./tools/gen-postmortem-metadata.py.  Do not edit directly.
//

// Need to import standard headers before redefining private, otherwise it
// won't compile
#include <algorithm>
#include <array>
#include <atomic>

mmarchini

from time import sleep

import stapsdt

# Create a Provider, which we'll use to register probes
provider = stapsdt.Provider("pythonapp")

# Register your first probe with two arguments by passing its types
probe = provider.add_probe(
    "firstProbe", stapsdt.ArgTypes.uint64, stapsdt.ArgTypes.int32)

mmarchini

// Import usdt module
const USDT = require("usdt");

// Create a Provider, which we'll use to register probes
const provider = new USDT.USDTProvider("nodeProvider");

// Register your first probe with two arguments by passing its types
const probe1 = provider.addProbe("firstProbe", "int", "char *");

// Enable provider (needed to fire probes later)

mmarchini

all:
	nasm -f bin -o small-raw.so small-raw.asm
	chmod +x small-raw.so

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#!/usr/bin/env python3

from subprocess import run, PIPE

completed_process = run(["docker-machine.exe", "env", "--shell", "bash"], stdout=PIPE)

docker_env = completed_process.stdout.decode("ascii")

for line in docker_env.split("\n"):
    if "DOCKER_CERT_PATH" in line:

mmarchini

 INFO global: Vagrant version: 1.9.5
 INFO global: Ruby version: 2.2.5
 INFO global: RubyGems version: 2.4.5.1
 INFO global: VAGRANT_WSL_ENABLE_WINDOWS_ACCESS="1"
 INFO global: VAGRANT_OLD_ENV_PWD="/home/matheus/workspace/sthima/netell"
 INFO global: VAGRANT_OLD_ENV_LESSOPEN="| /usr/bin/lesspipe %s"
 INFO global: VAGRANT_OLD_ENV_VAGRANT_WSL_ENABLE_WINDOWS_ACCESS="1"
 INFO global: VAGRANT_OLD_ENV_LANG="en_US.UTF8"
 INFO global: VAGRANT_INSTALLER_EMBEDDED_DIR="/opt/vagrant/embedded"
 INFO global: VAGRANT_OLD_ENV_SSH_AUTH_SOCK="/tmp/ssh-wlHqbEDYEREC/agent.756"

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 INFO global: Vagrant version: 1.9.5
 INFO global: Ruby version: 2.2.5
 INFO global: RubyGems version: 2.4.5.1
 INFO global: VAGRANT_WSL_ENABLE_WINDOWS_ACCESS="1"
 INFO global: VAGRANT_OLD_ENV_PWD="/home/matheus/workspace/sthima/netell"
 INFO global: VAGRANT_INSTALLER_VERSION="2"
 INFO global: VAGRANT_OLD_ENV_TERM="xterm-256color"
 INFO global: VAGRANT_OLD_ENV_NAME="DESKTOP-SR404CD"
 INFO global: VAGRANT_OLD_ENV_LESSOPEN="| /usr/bin/lesspipe %s"
 INFO global: VAGRANT_INSTALLER_ENV="1"