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Monero P2Pool

Decentralized pool for Monero mining.

Pool status and monitoring pages can be found at https://p2pool.io/, https://p2pool.io/mini/ and https://p2pool.observer/

Build Status

C/C++ CI CodeQL msvc-analysis cppcheck Coverity Scan Build Status

Contents

Pool mining vs Solo mining vs P2Pool mining

Here's the comparison table of the different ways of mining. While pool mining is the easiest to setup, it centralizes Monero network and pool admin gets full power over your hashrate and your unpaid funds. Solo mining is 100% independent and the best for the network. P2Pool mining has all the advantages of solo mining, but also makes regular payouts possible.

Pool type Payouts Fee Min. payout Centralized? Stability Control Setup
Centralized pool Regular 0-3% 0.001-0.01 XMR Yes Less stable due to pool server outages Pool admin controls your mined funds, what you mine and can execute network attacks Only miner software is required
Solo Rare 0% 0.6 XMR or more No As stable as your Monero node 100% under your control Monero node + optional miner
P2Pool Regular 0% ~0.0003 XMR No As stable as your Monero node 100% under your control Monero node + P2Pool node + miner

Features

  • Decentralized: no central server that can be shutdown/blocked. P2Pool uses a separate blockchain to merge mine with Monero. Pool admin can't go rogue or be pressured to do an attack on the network because there is no pool admin!
  • Permissionless: there is no one to decide who can mine on the pool and who can't.
  • Trustless: there is no pool wallet, funds are never in custody. All pool blocks pay out to miners immediately.
  • PPLNS payout scheme
  • 0% fee
  • 0 XMR payout fee
  • ~0.0003 XMR minimal payout
  • Fast block times, down to 1 second
  • Uncle blocks are supported to avoid orphans - all your shares will be accounted for!
  • Configurable PPLNS window size and block time
  • Advanced mempool picking algorithm, it creates blocks with better reward than what monerod solo mining does
  • Password protected private pools

How PPLNS works in P2Pool

First you need to find a pool share. This share will stay in PPLNS window for 2160 pool blocks (6 hours). The moment P2Pool finds a Monero block and you have at least 1 pool share in PPLNS window, you'll get a payout! Monero block reward is split between all miner wallets in PPLNS window. Each miner gets a part of block reward proportional to the total difficulty of his/her shares in PPLNS window.

NOTE If P2Pool doesn't have enough hashrate to find Monero blocks faster than every 6 hours on average (~15 MH/s), not all your pool shares will result in a payout. Even if pool hashrate is higher, bad luck can sometimes result in a share going through PPLNS window without a payout. But in the long run it will be compensated by other shares receiving multiple payouts - your payouts will average out to what you'd get with regular pool mining.

Default P2Pool parameters

  • Block time: 10 seconds
  • PPLNS window: 2160 blocks (6 hours)
  • Minimum payout = Monero block reward/2160, ~0.0003 XMR

Monero version support

Monero will undergo a network upgrade on August 13th, 2022 (block 2,688,888). In order to continue mining after that date, you must update both Monero and P2Pool software to the latest available versions as soon as they are released.

Monero protocol version Required Monero software version Required P2Pool version
v14 (active until August 13th, 2022) v0.17.3.0 or newer v1.0 or newer
v15, v16 (active after August 13th, 2022) v0.18.0.0 or newer v2.2 or newer

How to mine on P2Pool

General Considerations

  • In order to mine on P2Pool, a synced Monero node using monerod v0.17.3.0 or newer is required. If you do not currently have one configured, you can find instructions to do so here.
  • It is highly recommended that you create a separate restricted user account for mining. While P2Pool has been battle-tested for a long time now, any software may have unknown bugs/vulnerabilities.
  • You have to use a primary wallet address for mining. Subaddresses and integrated addresses are not supported, just like with monerod solo mining.
  • Starting from P2Pool v1.7, you can add the --mini parameter to your P2Pool command to connect to the p2pool-mini sidechain. Note that it will also change the default p2p port from 37889 to 37888.
  • Check that ports 18080 (Monero p2p port) and 37889/37888 (P2Pool/P2Pool mini p2p port) are open in your firewall to ensure better connectivity. If you're mining from a computer behind NAT (like a router) you could consider forwarding the ports to your local machine.
  • You can connect multiple miners to the same P2Pool node. The more the better!
  • The below steps assume that you run everything on the same machine. If it's not the case, change 127.0.0.1 to appropriate IP addresses for your setup.
  • It is highly recommended to create a new mainnet wallet for P2Pool mining because wallet addresses are public on P2Pool.

Wallet software compatible with P2Pool payouts

GNU/Linux

  1. Download the latest P2Pool binaries here.
    • Alternatively, grab the latest source code for P2Pool and build it.
  2. Download the latest XMRig (linux-static-x64) binary here.
  3. Prepare enough huge pages (required for each instance of monerod/P2Pool/XMRig):
sudo sysctl vm.nr_hugepages=3072
  1. Check that ports 18080 (Monero p2p port) and 37889/37888 (P2Pool/P2Pool mini p2p port) are open in your local firewall to ensure better connectivity.
  2. Start monerod with the following command/options:
./monerod --zmq-pub tcp://127.0.0.1:18083 --disable-dns-checkpoints --enable-dns-blocklist

Note: The --zmq-pub option is required for P2Pool to work properly.

  1. Start P2Pool with the following command/options:
./p2pool --host 127.0.0.1 --wallet YOUR_WALLET_ADDRESS
  1. Wait until the initial P2Pool sync is finished (shouldn't take more than 5-10 minutes).
  2. Start XMRig with the following command/options:
./xmrig -o 127.0.0.1:3333
  • Note that you don't need to specify your wallet address for XMRig. Wallet addresses set in XMRig config will be ignored!
  • To set a custom fixed difficulty for your miner (for example, 10000), instead start XMRig with the following options:
./xmrig -u x+10000 -o 127.0.0.1:3333
  1. XMRig should connect and start mining!

Additional Information:

  • For a more in-depth beginner friendly walk-through with the option of using Docker, please see SethForPrivacy's guide at: https://sethforprivacy.com/guides/run-a-p2pool-node/
  • You can check the p2pool.log for any warnings or errors using the following command:
grep -E 'WARNING|ERROR' p2pool.log
  • P2Pool has verbose logging by default, you can reduce it by using "loglevel N" command where N is between 0 and 6. Default loglevel is 3.
    • You can use logrotate with a config like this to control logfile growth:
<path-to-logfile>
{
rotate 7
daily
missingok
delaycompress
nocreate
}

Windows

Note: Windows SmartScreen may block incoming connections by files that are "Downloaded from the Internet". You can allow 'p2pool.exe' and 'monerod.exe' by double-clicking them, clicking "More Info", then click "Run Anyway" and then closing them immediately so you can run them from the command line. Advanced users can use the PowerShell cmdlet Unblock-File to remove this flag.

  1. Download the latest P2Pool binaries here.
    • Alternatively, grab the latest source code for P2Pool and build it.
  2. Download the latest XMRig binary here.
  3. Expand the P2Pool binaries into an appropriate location (%USERPROFILE%/bin or C:/bin/ are good options)
  4. Expand XMRig binary into an appropriate location (the same folder as P2Pool is fine).
  5. Prepare huge pages to work properly (each instance of monerod/P2Pool/XMRig needs them):
    • On Windows 10 or above, run XMRig at least once as Administrator (right-click Run As Administrator)
    • On earlier versions of Windows, you'll need to run XMRig as Administrator at least once per login.
  6. Open a command prompt and navigate to the folder where you extracted P2Pool.

Note: When running the below commands, Windows Firewall may prompt to allow connections, click "Allow" if prompted.

  1. Start monerod with the following command/options:
.\Monero\monerod.exe --zmq-pub tcp://127.0.0.1:18083 --disable-dns-checkpoints --enable-dns-blocklist

Note: The --zmq-pub option is required for P2Pool to work properly. 8. Start P2Pool with the following command/options:

.\p2pool.exe --host 127.0.0.1 --wallet YOUR_WALLET_ADDRESS
  1. Wait until the initial P2Pool sync is finished (shouldn't take more than 5-10 minutes).
  2. Start XMRig with the following command/options:
.\xmrig.exe -o 127.0.0.1:3333
  • Note that you don't need to specify your wallet address for XMRig. Wallet addresses set in XMRig config will be ignored!
  • To set a custom fixed difficulty for your miner (for example, 10000), instead start XMRig with the following options: 
    xmrig.exe -u x+10000 -o 127.0.0.1:3333
  1. XMRig should connect and start mining!
  2. (Optional but highly recommended) You can create a Quickstart by creating a batch (.bat) file with the following contents and placing it in your P2Pool directory along with xmrig.exe.
@ECHO OFF
start cmd /k %~dp0\Monero\monerod.exe --zmq-pub tcp://127.0.0.1:18083 --disable-dns-checkpoints --enable-dns-blocklist
ECHO Wait until the Monero daemon shows fully synced before continuing. This can take some time. Type 'status' in other window to check progress.
PAUSE
start cmd /k %~dp0\p2pool.exe --wallet YOUR_WALLET_ADDRESS
ECHO Wait until the daemon shows fully synced before continuing. This can take some time.
PAUSE
%~dp0\xmrig.exe -u x+30000 -o 127.0.0.1

Build instructions

Please see the relevant instructions for your platform:

Ubuntu 20.04

Run the following commands to install the necessary prerequisites, clone this repo, and build P2Pool locally on Ubuntu 20.04:

sudo apt update && sudo apt install git build-essential cmake libuv1-dev libzmq3-dev libsodium-dev libpgm-dev libnorm-dev libgss-dev libcurl4-openssl-dev libidn2-0-dev
git clone --recursive https://github.com/SChernykh/p2pool
cd p2pool
mkdir build && cd build
cmake ..
make -j$(nproc)

Arch Linux

pacman -S p2pool

Nix/NixOS

This is a flake only project. So you have to use nixUnstable with nix flakes to build or install P2Pool. The commands below use the new flake specific reference-format, so be sure to also set ca-references in --experimental-features.

Because this project has submodules which are not fixed in nixUnstable yet you have to use the nix/master branch:

nix shell github:nixos/nix/master

Run the binary:

nix run git+https://github.com/SChernykh/p2pool?ref=master

Run the binary with arguments:

nix run git+https://github.com/SChernykh/p2pool?ref=master -- --help

Windows

P2Pool binary (Visual Studio Community 2019 build): NOTE: You need to have the "Desktop Development with C++" module installed.

git clone --recursive https://github.com/SChernykh/p2pool
cd p2pool
mkdir build
cd build
cmake .. -G "Visual Studio 16 2019"

then open generated build\p2pool.sln in Visual Studio and build it there

Alternatively, you can select "Clone a repository" within the GUI, then select "Build" from the menu.

macOS

Run the following commands to install the necessary prerequisites, clone this repo, and build P2Pool locally on your Mac:

brew update && brew install git cmake libuv zmq libpgm
git clone --recursive https://github.com/SChernykh/p2pool
cd p2pool
mkdir build && cd build
cmake ..
make -j$(sysctl -n hw.logicalcpu)

FreeBSD

Run the following commands to install the necessary prerequisites, clone this repo, and build P2Pool locally on FreeBSD:

pkg install git cmake libuv libzmq4
git clone --recursive https://github.com/SChernykh/p2pool
cd p2pool
mkdir build && cd build
cmake ..
make

Android (Termux)

Run the following commands to install the necessary prerequisites, clone this repo, and build P2Pool locally in Termux:

pkg install git build-essential cmake libuv libzmq libcurl
git clone --recursive https://github.com/SChernykh/p2pool
cd p2pool
mkdir build && cd build
cmake ..
make -j$(nproc)

Donations

If you'd like to support further development of Monero P2Pool, you're welcome to send any amount of XMR to the following address:

44MnN1f3Eto8DZYUWuE5XZNUtE3vcRzt2j6PzqWpPau34e6Cf4fAxt6X2MBmrm6F9YMEiMNjN6W4Shn4pLcfNAja621jwyg