Guy Rombaut guyromb

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

Encoding high-quality HEVC content in a two-pass manner with FFmpeg - based NVENC encoder on supported hardware:

If you've built ffmpeg as instructed here on Linux and the ffmpeg binary is in your path, you can do fast HEVC encodes as shown below, using NVIDIA's NPP's libraries to vastly speed up the process.

Now, to do a simple NVENC encode in 1080p, (that will even work for Maxwell Gen 2 (GM200x) series), start with:

ffmpeg  -i <inputfile> -pass 1 \
-filter:v hwupload_cuda,scale_npp=w=1920:h=1080:format=nv12:interp_algo=lanczos,hwdownload,format=nv12 \

-c:v hevc_nvenc -profile main -preset slow -rc vbr_2pass \

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

Effective Engineer - Notes

By Edmond Lau
Highly Recommended 👍
http://www.theeffectiveengineer.com/

What's an Effective Engineer?

A curated list of AWS resources to prepare for the AWS Certifications

A curated list of awesome AWS resources you need to prepare for the all 5 AWS Certifications. This gist will include: open source repos, blogs & blogposts, ebooks, PDF, whitepapers, video courses, free lecture, slides, sample test and many other resources.

	# This is something that I always forget and had a surprisingly hard time finding (or better yet, understanding). Here's the
	# scenario: a colleague creates a new kubernetes cluster, named" cluster-foo.example.com". You want to look at it (for
	# troubleshooting, updating the deployment, whatever). To get your kubectl installation to "see" the new cluster, take the
	# following steps:

	# ASSUMPTION: You have pointed kops to some location where the cluster configurations are stored
	# (I have this in my ~/.bash_profile):
	export KOPS_STATE_STORE=s3://example-state-store

	# Use kops to get the list of clusters

	#!/bin/bash

	if [ "$EUID" -ne 0 ]
	then echo "Must be root"
	exit
	fi

	ADAPTER="eth0"

	# Allow overriding from eth0 by passing in a single argument

	#!/bin/bash
	#
	# This version uses September 2017 august stretch image, please use this image
	#

	if [ "$EUID" -ne 0 ]
	then echo "Must be root"
	exit
	fi

	Jenkins
	Download from jenkins and run the installer

	Load and unload manually can be done with
	load:sudo launchctl load /Library/LaunchDaemons/org.jenkins-ci.plist
	unload: sudo launchctl unload /Library/LaunchDaemons/org.jenkins-ci.plist

	heap-size
	sudo defaults write /Library/Preferences/org.jenkins-ci heapSize 1024M

	# to generate your dhparam.pem file, run in the terminal
	openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048

	# Run this in the project repo from the command-line
	# http://stackoverflow.com/a/4593065/99923

	git log --shortstat --author "Xeoncross" --since "2 weeks ago" --until "1 week ago" \| grep "files changed" \| awk '{files+=$1; inserted+=$4; deleted+=$6} END {print "files changed", files, "lines inserted:", inserted, "lines deleted:", deleted}'