Anton git-webmaster

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

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.

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Debian on ThinkPad W540

This is a short write-up of my experiences with installing Debian on a ThinkPad W540.

All commands should be run as root, unless indicated otherwise.

Как установить и настроить сфинкс.

Скачиваем сфинкс (берем версию с MySQL и со стеммингом на 15 языков Win32 binaries w/MySQL+PgSQL+libstemmer+id64 support соответствующую битности твоей ОС), распаковываем например в d:\temp\s\

На этом установка sphinx завершена. В дебиане просто делаем sudo apt-get install sphinxsearch.

Создаем таблицы:

CREATE TABLE news

(id INT(10) AUTO_INCREMENT PRIMARY KEY, topic INT(10) NOT NULL, header VARCHAR(200) NOT NULL,

Nginx FastCGI response buffer sizes

By default when Nginx starts receiving a response from a FastCGI backend (such as PHP-FPM) it will buffer the response in memory before delivering it to the client. Any response larger than the set buffer size is saved to a temporary file on disk.

This process is outlined at the Nginx ngx_http_fastcgi_module page manual page.

Introduction
Determine actual FastCGI response sizes
Setting the buffer size
Verifying results

	Latency Comparison Numbers (~2012)
	----------------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD

	#!/bin/sh

	# this script sets some parameters to get a useable configuration
	# these changes are not persistent, you may want to include this in your autostart

	# 1 finger = left click, 2 finger = right click, 3 finger = middle click
	synclient TapButton2=3
	synclient TapButton3=2
	synclient ClickFinger2=3
	synclient ClickFinger3=2

	<?php

	/*
	* (c) Mark Badolato <[email protected]>
	*
	* This content is released under the {@link http://www.opensource.org/licenses/MIT MIT License.}
	*/

	namespace Bado;

	# Create your superuser
	$ mongo
	> use admin
	> db.createUser({user:"someadmin",pwd:"secret", roles:[{role:"root",db:"admin"}]})
	> exit

	# Alias for convenience (optional and at your own risk)
	$ echo 'alias mongo="mongo --port 27017 -u someadmin -p secret --authenticationDatabase admin"' >> ~/.bash_profile
	$ source ~/.bash_profile