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l0rinc / LongNumberParsing.java
Created February 22, 2023 09:01
https://twitter.com/cowtowncoder/status/1628208067388268544
@BenchmarkMode(Mode.Throughput)
@State(Scope.Benchmark)
@Fork(value = 1)
@Measurement(iterations = 3, time = 1)
@Warmup(iterations = 3, time = 1)
public class LongNumberParsing {
static final String DIGITS = "1234567890";
static final int REPETITIONS = 100;
static final String LONG_INT = join("", nCopies(REPETITIONS, DIGITS));
static final String LONG_FP = DIGITS + "." + join("", nCopies(REPETITIONS - 1, DIGITS));
@l0rinc
l0rinc / wallet_create_tx_input.cpp
Created June 11, 2024 14:58
// Copyright (c) 2024 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or https://www.opensource.org/licenses/mit-license.php.
#include <bench/bench.h>
#include <chainparams.h>
#include <wallet/coincontrol.h>
#include <consensus/merkle.h>
#include <kernel/chain.h>
#include <node/context.h>
@l0rinc
l0rinc / base58_tests.cpp
Created July 2, 2024 07:13
// Copyright (c) 2011-2022 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <test/data/base58_encode_decode.json.h>
#include <base58.h>
#include <test/util/json.h>
#include <test/util/random.h>
#include <test/util/setup_common.h>
@l0rinc
l0rinc / gist:66f13938d867d82893d7ab7a2ebc5717
Created August 14, 2024 14:57
::move ternary
See related discussions:
* https://github.com/bitcoin/bitcoin/pull/28280#discussion_r1676800505
* https://github.com/bitcoin/bitcoin/pull/28280#discussion_r1676801434
* https://github.com/bitcoin/bitcoin/pull/17487#discussion_r402037193
```diff
---
diff --git a/src/test/coins_tests.cpp b/src/test/coins_tests.cpp
--- a/src/test/coins_tests.cpp (revision 9f3bf64d29c497fb90406974548a717ba5918b25)
+++ b/src/test/coins_tests.cpp (date 1723646168861)
@l0rinc
l0rinc / .diff
Created August 21, 2024 11:14
488887ce32aaed65d395e329d9093596e7c2e733
Subject: [PATCH] TODO
---
Index: src/test/util_tests.cpp
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
diff --git a/src/test/util_tests.cpp b/src/test/util_tests.cpp
--- a/src/test/util_tests.cpp (revision 8b13872aa2960e66e0bf8542fcb5b8dda68c5d8c)
+++ b/src/test/util_tests.cpp (date 1724237518191)
@l0rinc
l0rinc / gist:3da714613283763e9464cb0011a9f732
Created August 26, 2024 14:32
Subject: [PATCH] Exclude `incomin&amp;g` from lint-spelling
Before:
% test/lint/lint-spelling.py
src/qt/forms/optionsdialog.ui:345: incomin ==> incoming
After:
% test/lint/lint-spelling.py
@l0rinc
l0rinc / xor_histogram_860k.py
Last active November 13, 2024 13:48
The histogram represents util::Xor method's write.size() histograms for the first 860k blocks, aggregated using: `awk '{ count[$1]++ } END { for (val in count) { printf "(%s, %.0f),\n", val, count[val] } }' histogram.txt`
This file has been truncated, but you can view the full file.
#!/usr/bin/env python3
import tarfile
import io
from io import BytesIO
def convert_to_binary():
# Raw histogram data as (size, count) pairs
histogram = [
(1, 47584838861),
@l0rinc
l0rinc / benchmark.md
Last active January 13, 2025 14:26
Bitcoin Core benchmark for https://github.com/bitcoin/bitcoin/pull/31144

Ez az útmutató segít abban, hogy összehasonlítsd a Bitcoin Core két különböző verziójának teljesítményét az első blokklánc-letöltési (IBD) folyamat során. Két buildet fogsz futtatni, és az eredményeket megoszthatod.

Kell hozzá:

  • GitHub fiók (az eredmények publikálásához).
  • Linux alapú rendszer (például Ubuntu/Debian).
  • Legalább 1 TB szabad hely a blokklánc adataihoz (ideiglenes, utána törölhető).

Először telepítsd a szükséges csomagokat (Debian/Ubuntu rendszeren). Csak megbízható forrásból telepíts!




  


  




    


          
    

      

        
        

          

              @l0rinc
          

          

            
                l0rinc
                / benchmark.md
            
            

              Last active
              February 17, 2025 20:26
            

              
                Bitcoin Core benchmark for https://github.com/bitcoin/bitcoin/pull/31144
              
          

        

      

        

  

      

    
This guide helps you compare the performance of two different versions of Bitcoin Core during the initial block download (IBD) process.
You will run two builds and share the results.


Background and Purpose


I am working on improving the performance of the first phase of Bitcoin Core, specifically the process of downloading and validating the blockchain on a fresh machine.
I have proposed several modifications that, based on my own measurements, result in measurable speed improvements. However, to ensure broader acceptance, I need help reproducing these results by having others run similar tests.


This is a technical process (though not overly complex, in my opinion), requiring the source code to be compiled. The goal is to validate these improvements on multiple setups and environments, which will help accelerate their adoption.


Requirements:



  


  




    


          
    

      

        
        

          

              @l0rinc
          

          

            
                l0rinc
                / Dump stale blocks
            
            

              Last active
              January 30, 2025 10:11
            

              
                Dump stale blocks
              
          

        

      

        

  

    
    


        



  


  

        

          
          #!/bin/bash
        

        

          
          

        

        

          
          # Set up the working directory and output folder
        

        

          
          DATADIR="/mnt/bitcoin-data"
        

        

          
          OUTPUT_DIR="$DATADIR/stale_blocks"
        

        

          
          LOG_FILE="$OUTPUT_DIR/stale_blocks.csv"
        

        

          
          

        

        

          
          mkdir -p "$OUTPUT_DIR"
        

        

          
          while read -r bhash; do
        

        

          
              # Fetch block information (height and hash) and skip if unavailable