danielealbano’s gists

danielealbano / benchmark.txt

Created September 24, 2023 15:30

golang - mpmc ringbuffer - spinlock vs mutex

	go test -bench=.
	goos: linux
	goarch: amd64
	pkg: pgproxy/internal/helpers
	cpu: AMD Ryzen 9 3950X 16-Core Processor
	BenchmarkRingBufferEnqueueDequeueMutex-32 5174512 212.9 ns/op 0 B/op 0 allocs/op
	BenchmarkRingBufferEnqueueMutex-32 8517314 127.9 ns/op 0 B/op 0 allocs/op
	BenchmarkRingBufferDequeueMutex-32 16836531 71.17 ns/op 0 B/op 0 allocs/op
	BenchmarkRingBufferEnqueueDequeueSpinlock-32 3977191 303.1 ns/op 0 B/op 0 allocs/op
	BenchmarkRingBufferEnqueueSpinlock-32 7919860 146.9 ns/op 0 B/op 0 allocs/op

danielealbano / mbedtls-server-test.c

Created August 1, 2023 11:18

openssl vs mbedtls handshake performances

	// Compile with
	// gcc -O3 -o mbedtls-server-test mbedtls-server-test.c -lmbedtls -lmbedx509 -lmbedcrypto
	// mbedtls from Ubuntu 22.10

	#if !defined(MBEDTLS_CONFIG_FILE)
	#include "mbedtls/config.h"
	#else
	#include MBEDTLS_CONFIG_FILE
	#endif
	#if defined(MBEDTLS_PLATFORM_C)

danielealbano / example.c

Created August 28, 2021 00:54

cachegrand fiber - example

	// requires
	// https://github.com/danielealbano/cachegrand/blob/41-implement-fibers-support/src/fiber.c
	// https://github.com/danielealbano/cachegrand/blob/41-implement-fibers-support/src/fiber.h
	// https://github.com/danielealbano/cachegrand/blob/41-implement-fibers-support/src/fiber.s

	#include <stdio.h>
	#include <stdlib.h>
	#include <stdint.h>

	#include "fiber.h"

danielealbano / run-memtier-benchmark-tests.sh

Created August 7, 2021 16:09

run-memtier-benchmark-tests

danielealbano / lscpu-epyc-7402.txt

Created July 24, 2021 11:48

lscpu - amd epyc 7402

	# lscpu
	Architecture: x86_64
	CPU op-mode(s): 32-bit, 64-bit
	Byte Order: Little Endian
	Address sizes: 43 bits physical, 48 bits virtual
	CPU(s): 48
	On-line CPU(s) list: 0-47
	Thread(s) per core: 2
	Core(s) per socket: 24
	Socket(s): 1

danielealbano / setup-cachegrand-bench-server-and-client.sh

Last active August 7, 2021 16:03

cachegrand benchmark env server and client setup script

	#!/bin/bash
	apt update
	DEBIAN_FRONTEND=noninteractive DEBIAN_PRIORITY=critical apt-get -q -y -o "Dpkg::Options::=--force-confdef" -o "Dpkg::Options::=--force-confold" upgrade
	apt install -y build-essential autoconf automake libpcre3-dev libevent-dev pkg-config zlib1g-dev libssl-dev iftop htop git nload
	cd /usr/local/src
	git clone https://github.com/RedisLabs/memtier_benchmark.git
	cd memtier_benchmark/
	autoreconf -ivf
	./configure
	make

danielealbano / instructions.txt

Last active February 13, 2021 16:09

cachegrand / redis / keydb benchmark general instructions

	# INITIAL SETUP (for both testers and main server)

	# Install required packages
	sudo apt update && \
	sudo apt upgrade -y && \
	sudo apt install -y git wget curl build-essential gdb cmake libevent-dev autoconf automake libpcre3-dev libevent-dev pkg-config zlib1g-dev libssl-dev

	# UPGRADE UBUNTU KERNEL TO 5.10.15
	wget https://raw.githubusercontent.com/pimlie/ubuntu-mainline-kernel.sh/master/ubuntu-mainline-kernel.sh && \
	chmod +x ubuntu-mainline-kernel.sh && \

danielealbano / github-runner-REPO-arm64-rpi4-deployment,yml

Created January 9, 2021 20:09

kubernetes github runner deployment for raspberrypi

	# Before applying this k8s deployment is necessary to adjust the labels specified in the
	# selctor to match the ones in use in your kubernetes cluster.
	# It is in addition necessary to replace the __ACCESS_TOKEN__, __REPO_URL__, __REPO_NAME__
	# placeholders, the gitlab runner are per repo or per organization, they can't be assigned
	# directly to an user.

	apiVersion: apps/v1
	kind: Deployment
	metadata:
	name: github-runner-__REPO_NAME__-arm64-rpi4

danielealbano / rpi4-ssd1306-status-display.py

Last active April 6, 2022 03:05

rpi4-ssd1306-status-display.py

	# RPI4 SSD1306 Status Display - v0.2 - 2020/12/04 - 11.46 PM GMT
	# Requires a 128x32 I2C SSD1306 OLED display
	#
	# Author Daniele Albano <https://github.com/danielealbano>
	#
	# It displays a number of status information for the RPI4
	# - Memory usage
	# - Cpu load (per CPU)
	# - Temperature
	# - Network traffic (no loopback)

danielealbano / dev-input-reader.c

Last active February 21, 2023 11:29

dev-input-reader - a simple input events reader able to produce a jsonl output

	// compile with
	// gcc -Wall dev-input-reader.c -o dev-input-reader
	//
	// run with
	// sudo dev-input-reader
	//
	// example output
	// { "source": "/dev/input/event26", "device": { "name": " USB Keyboard", "location": "usb-0000:00:14.0-9/input0" }, "event": null }
	// { "source": "/dev/input/event29", "device": { "name": "Logitech MX Master 2S", "location": "usb-0000:00:14.0-10/input2:1" }, "event": null }
	// { "source": "/dev/input/event26", "device": null, "event": { "timestamp": 1605658367, "type": "EV_MSC", "type_id": 4, "code": "MSC_SCAN", "code_id": 4, "value": 458792 } }

Daniele Salvatore Albano danielealbano