Daniel Pawlik danpawlik

## openwrt-simple.md

      
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                danpawlik
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              June 7, 2023 07:48
            
              
                OpenWRT simple configuration with roaming 802.11r
              
          
    OpenWRT wireless configuration with enabled Fast Roaming (802.11r)


                                  +---------------------------------------+                 
+---------------------------------|-----+                                 |                 
|                                 |     |                                 |                 
|                                 |     |                                 |                 
|              MAIN               |     |            AP1                  |                 
|      +--------------------+     |     |      +------------------+       |                 


## quay all in one
podman login registry.redhat.io

export domain=quay.ralvares.local
export QUAY=/data/quay

mkdir -p $QUAY/postgres-quay
mkdir $QUAY/clair
mkdir -p $QUAY/config/extra_ca_certs

mkdir $QUAY/storage

## Delete a tag on all repositories in an organisation
#!/usr/bin/env bash

NAMESPACE=your_namespace_on_quay
TAG=the_tag

# https://quay.io/organization/your_namespace_on_quay?tab=applications
ACCESS_TOKEN=xxxxx

for repository in $(curl -s -X GET -H "Authorization: Bearer $ACCESS_TOKEN" "https://quay.io/api/v1/repository?namespace=$NAMESPACE" | jq -r '.repositories[].name' | sort); do
    curl -s -X DELETE -H "Authorization: Bearer $ACCESS_TOKEN" https://quay.io/api/v1/repository/$NAMESPACE/$repository/tag/$TAG

## Setup Android build environment on Fedora
#!/bin/bash
if [ $UID != "0" ]; then
	echo "ERROR: You must run this script as root!"
	exit 1
fi

dnf install \
	@development-tools \
	android-tools \
	automake \

## latency.txt
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
	podman login registry.redhat.io

	export domain=quay.ralvares.local
	export QUAY=/data/quay

	mkdir -p $QUAY/postgres-quay
	mkdir $QUAY/clair
	mkdir -p $QUAY/config/extra_ca_certs

	mkdir $QUAY/storage
	#!/bin/bash
	if [ $UID != "0" ]; then
	echo "ERROR: You must run this script as root!"
	exit 1
	fi

	dnf install \
	@development-tools \
	android-tools \
	automake \
	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