danielealbano

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

// 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

// 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

memtier_benchmark \
    -s cachegrand-server-01 \
    -p "6379" \
    -c "100" \
    -t "48" \
    --print-percentiles=50,90,95,99,99.5,99.9,100 \
    --command="PING" \
    -x 5 \
    -x 5 > output-benchmark-ping.txt

danielealbano

# 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

#!/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

# 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

# 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 - 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

// 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 } }