Komputronika komputronika

Adjusting child processes for PHP-FPM (Nginx)

When setting these options consider the following:

How long is your average request?
What is the maximum number of simultaneous visitors the site(s) get?
How much memory on average does each child process consume?

Determine if the max_children limit has been reached.

sudo grep max_children /var/log/php?.?-fpm.log.1 /var/log/php?.?-fpm.log

Moved to git repository: https://github.com/denji/nginx-tuning

NGINX Tuning For Best Performance

For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx.

Generally, properly configured nginx can handle up to 400K to 500K requests per second (clustered), most what i saw is 50K to 80K (non-clustered) requests per second and 30% CPU load, course, this was 2 x Intel Xeon with HyperThreading enabled, but it can work without problem on slower machines.

You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers.

Moved to git repository: https://github.com/aliesbelik/load-testing-toolkit

Benchmarking & load testing

Tools to benchmark & load-test your code or services

http/s

apachebench (ab) - Standalone apachebench (ab), Apache HTTP server benchmarking tool. C
httperf - A tool for measuring web server performance. C

NGINX Performance Tuning

Content Compressions and Decompression

Documentation
- NGINX http_gzip module
- NGINX http_gunzip module
Enable gzip. by default, we’re not going to compress the responses that we’re getting from proxied servers or any piece of content that isn’t HTML.
But if one of our proxied servers happens to send us a pre-compressed response then we probably want to decompress it for clients that can’t handle gzip. In this situation, we’ll use the gunzip module
```
$ vim /etc/nginx/nginx.conf
```

	<?php
	// chdir to the correct directory before calling the script
	//Ref: https://stackoverflow.com/questions/11052162/run-bash-command-from-php#answer-11052453
	$old_path = getcwd();
	chdir('/path/to/file');
	//make sure to make the shell file executeable first before running the shell_exec function
	$output = shell_exec('./shell-script.sh');
	chdir($old_path);

	echo $output;

	## From a post on the ML, apropos this:
	## http://lowlatencyweb.wordpress.com/2012/03/20/500000-requestssec-modern-http-servers-are-fast.
	## For sysctl.conf

	net.ipv4.tcp_slow_start_after_idle = 0


	echo "1768 64512" > /proc/sys/net/ipv4/ip_local_port_range
	echo 1 > /proc/sys/net/ipv4/tcp_tw_recycle
	echo 1 > /proc/sys/net/ipv4/tcp_tw_reuse

	function parseMessage (buffer) {
	const firstByte = buffer.readUInt8(0);
	const isFinalFrame = Boolean((firstByte >>> 7) & 0×1);
	const [reserved1, reserved2, reserved3] = [ Boolean((firstByte >>> 6) & 0×1), Boolean((firstByte >>> 5) & 0×1), Boolean((firstByte >>> 4) & 0×1) ];
	const opCode = firstByte & 0xF;
	// We can return null to signify that this is a connection termination frame
	if (opCode === 0×8)
	return null;
	// We only care about text frames from this point onward
	if (opCode !== 0×1)

	// EXAMINE THE DOCUMENT OBJECT //

	// console.dir(document);
	// console.log(document.domain);
	// console.log(document.URL);
	// console.log(document.title);
	// //document.title = 123;
	// console.log(document.doctype);
	// console.log(document.head);
	// console.log(document.body);

	# Sebagai kelanjutan dari script saya sebelumnya (save_screenshot.py)
	# Script ini membuka laman kpu, memilih berurutan Propinsi, Kabupaten, Kecamatan, Kelurahan dan TPS
	# Di penghujung proses, dilakukan penyimpanan screenshot.
	# Sebagai POC, saya batasi saja 5 TPS
	from selenium import webdriver
	from selenium.webdriver.common.by import By
	from selenium.webdriver.support.ui import WebDriverWait
	from selenium.webdriver.support import expected_conditions as EC
	from datetime import datetime
	import time


	<button
	@click="showModal = !showModal \| fetch('{{ entry.url() }}', {
	headers: {
	'Content-Type': 'application/json',
	'X-Requested-With': 'XmlHttpRequest'
	},
	}).then(res => res.text()).then(text => { html = text })"
	class="flex justify-center animate-grow-on-hover--small"
	>