peak-load peak-load

About

This gist will show how to setup Raspbian Stretch as a headless Bluetooth A2DP audio sink. This will allow your phone, laptop or other Bluetooth device to play audio wirelessly through a Rasperry Pi.

Motivation

A quick search will turn up a plethora of tutorials on setting up A2DP on the Raspberry Pi. However, I felt this gist was necessary because this solution is:

Automatic & Headless - Once setup, the system is entirely automatic. No user iteration is required to pair, connect or start playback. Therefore the Raspberry Pi can be run headless.
Simple - This solution has few dependencies, readily available packages and minimal configuration.
Up to date - As of December 2017. Written for Raspbian Stretch & Bluez 5.43

Prerequisites

Sample config for 2 million web socket connection

    sysctl -w fs.file-max=12000500
    sysctl -w fs.nr_open=20000500
    # Set the maximum number of open file descriptors
    ulimit -n 20000000

    # Set the memory size for TCP with minimum, default and maximum thresholds 
 sysctl -w net.ipv4.tcp_mem='10000000 10000000 10000000'

Requirements

Minikube requires that VT-x/AMD-v virtualization is enabled in BIOS. To check that this is enabled on OSX / macOS run:

sysctl -a | grep machdep.cpu.features | grep VMX

If there's output, you're good!

	# AWS Certified Solutions Architect-Professional SAP-C01 New Feb 2019 Version Exam

	## Final Tips:

	1. Don't cram! If you are not ready to take the SAP-C01 exam, then just re-schedule it to a later date. Haste makes waste!
	2. Read the question first and then look at the options. Most of the time, you will notice that there are two seemingly similar options which only differs in one or several keywords. This will help you eliminate the wrong options much easier.
	3. Take the free AWS Exam Readiness course in https://aws.training and other free courses/videos there.

	## Exam Notes:
	- The new exam has 75 questions that you have to finish within 3 hours (180 minutes) with a minimum passing score of 750 out of 1000. The official AWS exam page says the exam is 170 minutes, but that is actually incorrect. I took the exam and it is 180 minutes and not 170 minutes.