yorickdowne

Overview

Besu, an Ethereum execution layer client, is optimized for minimal database growth (7-8 GiB/week) with default parameter --bonsai-limit-trie-logs-enabled. It can use RAM for more block processing speed.

If you have 64 GiB of RAM or more, you can add --Xplugin-rocksdb-high-spec-enabled=true for better performance.

A long-running Besu DB, started before trie-log limit was enabled, will have sizeable trie log storage. This can be reduced with a one-off prune using the storage trie-log prune subcommand, assuming Besu 24.7.0 or later.

Somer Esat adjustment

yorickdowne

Overview

Nethermind as of January 2024 takes about 1.1 TiB of space on a snap sync, and then grows by ~ 27 GiB/week.

When it starts to fill its disk, it can be online pruned (no downtime) to free up space again, to around the size of a fresh sync.

Prerequisites

• This is not an archive node. Do not try to prune an archive node.

yorickdowne

Overview

Syncing an Ethereum node is largely reliant on latency and IOPS, I/O Per Second, of the storage. Budget SSDs will struggle to an extent, and some won't be able to sync at all. IOPS can roughly be used as proxy of / predictor for latency. Measuring latency directly is arguably better.

This document aims to snapshot some known good and known bad models.

The drive lists are ordered by interface and then by capacity and alphabetically by vendor name, not by preference. The lists are not exhaustive at all. @mwpastore linked a filterable spreadsheet in comments that has a far greater variety of drives and their characteristics. Filter it by DRAM yes, NAND Type TLC, Form Factor M.2, and desired capacity.

For size, 4TB is a very conservative choice. The smaller 2TB drive should last an Ethereum full node until at least sometime 2026, with the [pre-merge history expiry](https://hackmd.io/@hBXHLw_9Qq2va4pRt

marcbelmont

#! /usr/bin/python3

import os
import sys
from pathlib import Path

NOTES = Path('~/Documents/notes.txt').expanduser()

def to_clipboard(text):
    os.system('echo "%s"|xclip -f -r -sel c > /dev/null' % str(text).strip())

ishad0w

deb http://archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse

deb http://archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse

deb http://archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse

deb http://archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse

weskerfoot

[Unit]
Description=Disable WiFi Power Management
After=network-online.target

[Service]
Type=simple
ExecStartPre= /bin/sleep 10
ExecStart= /usr/bin/iw dev wlp3s0 set power_save off

[Install]

safijari

I hope the tutorial has been useful to you. If it was kindly leave a like and a comment, and consider subscribing and turning on subscription notifications. I intend to make more videos like this on the topics mentioned before as well as on other spacemacs topic like magit (git plugin), large scale refactoring, and a number of other things. Thank you so much for watching.

Org tutorial

Note: a great reference can be had here http://spacemacs.org/layers/+emacs/org/README.html

Outlines/headers

Show that each outline has it’s associated “text” under it

sam016

package com.sam016.vsflatomation.service.ble;

import java.util.HashMap;
import java.util.UUID;

public class AllGattCharacteristics {
    private static HashMap<String, String> attributes = new HashMap();

    static {
        attributes.put("00002a00-0000-1000-8000-00805f9b34fb", "Device Name");

yzf

deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse

wabouhamad

 name: journald optimizations to allow for increased logging rates
  hosts: all
  gather_facts: False
  tasks:
        - name: Stop and disable rsyslog
          systemd:
            name: "{{ item }}"
            state: stopped
            enabled: no
          with_items: