paulirish

A few conversations have circled around user-side structural profiling. For context, see React PR #7549: Show React events in the timeline when ReactPerf is active

One particular concern is the measurement overhead. This gist has a benchmarking script (measure.js) for evaluating overhead and initial results.

Results: performance.mark()

Runs about 0.65µs per mark() call. Naturally, that's ~= an overhead of 1ms for 1500 mark()s.

stefansundin

#!/usr/bin/env python3
# Get your files that Gmail block. Warning message:
# "Anti-virus warning - 1 attachment contains a virus or blocked file. Downloading this attachment is disabled."
# Based on: https://spapas.github.io/2014/10/23/retrieve-gmail-blocked-attachments/

# Instructions:
# Go to your emails, click the arrow button in the top right, "Show original", then "Download Original".
# Move the files to the same directory as this program, then run it.

import sys

OPVOQz.markdown

OPVOQz

A Pen by Captain Anonymous on CodePen.

License.

rf

var fs = require('fs');

var infile = process.argv[2];

if (!infile) return console.log("need infile");

var data = fs.readFileSync(infile, 'utf8').split('\n');
var outlines = [];

data.forEach(function(item) {

heyalexej

#!/usr/bin/env sh
set -e
# install charles proxy from deb sources.
# http://www.charlesproxy.com
sudo sh -c 'echo "deb http://www.charlesproxy.com/packages/apt/ charles-proxy main" > /etc/apt/sources.list.d/charles-proxy.list'
wget -q http://www.charlesproxy.com/packages/apt/PublicKey -O - | sudo apt-key add -

sudo apt-get update
sudo apt-get upgrade
sudo apt-get install -y charles-proxy

jodaka

 /**
     * We need dummy cookie storage that wouldn't save any cookies
     * or get any cookies
     */
    public class WebkitCookietHandlerProxy extends CookieHandler {

        @Override
        public void put(URI uri, Map<String, List<String>> responseHeaders) throws IOException {

            if (uri == null || responseHeaders == null) {

trevnorris

The prep-script.sh will setup the latest Node and install the latest perf version on your Linux box.

When you want to generate the flame graph, run the following (folder locations taken from install script):

sudo sysctl kernel.kptr_restrict=0
# May also have to do the following:
# (additional reading http://unix.stackexchange.com/questions/14227/do-i-need-root-admin-permissions-to-run-userspace-perf-tool-perf-events-ar )
sudo sysctl kernel.perf_event_paranoid=0

dkandalov

import com.intellij.openapi.module.ModuleManager
import com.intellij.openapi.util.Pair
import com.intellij.openapi.vcs.ProjectLevelVcsManager
import com.intellij.openapi.vcs.VcsKey
import com.intellij.openapi.vcs.update.UpdateEnvironment
import com.intellij.openapi.vcs.update.UpdatedFilesListener
import com.intellij.openapi.vcs.update.UpdatedFilesReverseSide
import com.intellij.util.Consumer
import com.intellij.util.messages.MessageBusConnection

happysundar

Vagrant vm network config

In the Vagrantfile, do :

  # Create a public network, which generally matched to bridged network.
  # Bridged networks make the machine appear as another physical device on
  # your network.
  config.vm.network :public_network

tjfontaine

From 8e3070ad5cc17116e47f71290d86b83aa06e98eb Mon Sep 17 00:00:00 2001
From: Timothy J Fontaine <tj.fontaine@joyent.com>
Date: Tue, 12 Aug 2014 00:20:44 +0000
Subject: [PATCH 2/2] descriptions are also 4 byte aligned

---
 usr/src/lib/libproc/common/Pcore.c | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/usr/src/lib/libproc/common/Pcore.c b/usr/src/lib/libproc/common/Pcore.c