Sergei Shulepov
c8fda4f1b6
* paras: `include_pvf_check_statement` rt bench Resolves #4933 This PR adds a benchmark for the `include_pvf_check_statement` dispatchable. This is a necessary step to make it work without modifications. That enables us to proceed with testing on Versi. This introduces 5 new benchmarks. Those measure performance of the `include_pvf_check_statement` under 2 different conditions: 1. regular vote submission. That's the common case. 2. submission of the last vote. That happens only once and leads to a heavy finalization stage. There are 2 different types of finalization (one for onboarding, one for upgrading) and there are two outcomes: accepted and rejected. Those 4 are similar but I decided to cover them all and assign the maximum of all 4. This is to avoid a situation when one of those paths becomes more heavier than others and opens up an attack venue. The regular vote submission weight is drastically different from the submission last vote weight. That's why in case during runtime finalization was not executed the weight consumed value will be lowered down to the regular vote submission. The finalization weight is proportional to the number of "causes", i.e. the events that caused the PVF pre-checking vote in the first place, and here we assume that the maximum number of causes is 100. Theoretically, there is nothing that prevents an adversary to register/upgrade to more than 100 parachains. In that case, the consumed weight will be lower than the actual time consumed by the finalization process. That can enable a DoS vector. However, practically, it is not very possible. Right now it is very expensive to call `schedule_para_initialize` because it requires a very large lock up of funds. Moreover, finalizing a vote with 100 causes leads to around 31ms time spent. Finalizing more will require more time. However, finalizing with 200 causes will cause ≈62ms delay. This is not that bad since even though we had a full block and the adversary tried to finalize 200 causes it won't be able to even exceed the operational extrinsic boundary of 250ms and even if so it won't make big difference. That said, this should be addressed later on, esp. when we enable parathreads, which will make creating causes easier. One of potential solutions will be shifting the logic of finalization into `on_initialize`/`on_finalize`. Another is to create a maximum number of causes and then reject upgrades or onboardings if that was reached. * cargo run --quiet --profile=production --features=runtime-benchmarks -- benchmark --chain=polkadot-dev --steps=50 --repeat=20 --pallet=runtime_parachains::paras --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --header=./file_header.txt --output=./runtime/polkadot/src/weights/runtime_parachains_paras.rs * cargo run --quiet --profile=production --features=runtime-benchmarks -- benchmark --chain=kusama-dev --steps=50 --repeat=20 --pallet=runtime_parachains::paras --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --header=./file_header.txt --output=./runtime/kusama/src/weights/runtime_parachains_paras.rs * cargo run --quiet --profile=production --features=runtime-benchmarks -- benchmark --chain=westend-dev --steps=50 --repeat=20 --pallet=runtime_parachains::paras --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --header=./file_header.txt --output=./runtime/westend/src/weights/runtime_parachains_paras.rs * cargo run --quiet --profile=production --features runtime-benchmarks -- benchmark --chain=rococo-dev --steps=50 --repeat=20 --pallet=runtime_parachains::paras --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --header=./file_header.txt --output=./runtime/rococo/src/weights/runtime_parachains_paras.rs * Fix import error Co-authored-by: Parity Bot <admin@parity.io> Co-authored-by: Robert Klotzner <robert.klotzner@gmx.at> Co-authored-by: Lldenaurois <Ljdenaurois@gmail.com>
Polkadot
Implementation of a https://polkadot.network node in Rust based on the Substrate framework.
NOTE: In 2018, we split our implementation of "Polkadot" from its development framework "Substrate". See the Substrate repo for git history prior to 2018.
This repo contains runtimes for the Polkadot, Kusama, and Westend networks. The README provides
information about installing the polkadot binary and developing on the codebase. For more
specific guides, like how to be a validator, see the
Polkadot Wiki.
Installation
If you just wish to run a Polkadot node without compiling it yourself, you may either run the latest binary from our releases page, or install Polkadot from one of our package repositories.
Installation from the Debian or rpm repositories will create a systemd
service that can be used to run a Polkadot node. This is disabled by default,
and can be started by running systemctl start polkadot on demand (use
systemctl enable polkadot to make it auto-start after reboot). By default, it
will run as the polkadot user. Command-line flags passed to the binary can
be customized by editing /etc/default/polkadot. This file will not be
overwritten on updating polkadot. You may also just run the node directly from
the command-line.
Debian-based (Debian, Ubuntu)
Currently supports Debian 10 (Buster) and Ubuntu 20.04 (Focal), and
derivatives. Run the following commands as the root user.
# Import the security@parity.io GPG key
gpg --recv-keys --keyserver hkps://keys.mailvelope.com 9D4B2B6EB8F97156D19669A9FF0812D491B96798
gpg --export 9D4B2B6EB8F97156D19669A9FF0812D491B96798 > /usr/share/keyrings/parity.gpg
# Add the Parity repository and update the package index
echo 'deb [signed-by=/usr/share/keyrings/parity.gpg] https://releases.parity.io/deb release main' > /etc/apt/sources.list.d/parity.list
apt update
# Install the `parity-keyring` package - This will ensure the GPG key
# used by APT remains up-to-date
apt install parity-keyring
# Install polkadot
apt install polkadot
RPM-based (Fedora, CentOS)
Currently supports Fedora 32 and CentOS 8, and derivatives.
# Install dnf-plugins-core (This might already be installed)
dnf install dnf-plugins-core
# Add the repository and enable it
dnf config-manager --add-repo https://releases.parity.io/rpm/polkadot.repo
dnf config-manager --set-enabled polkadot
# Install polkadot (You may have to confirm the import of the GPG key, which
# should have the following fingerprint: 9D4B2B6EB8F97156D19669A9FF0812D491B96798)
dnf install polkadot
Building
Install via Cargo
Make sure you have the support software installed from the Build from Source section below this section.
If you want to install Polkadot in your PATH, you can do so with with:
cargo install --git https://github.com/paritytech/polkadot --tag <version> polkadot --locked
Build from Source
If you'd like to build from source, first install Rust. You may need to add Cargo's bin directory to your PATH environment variable. Restarting your computer will do this for you automatically.
curl https://sh.rustup.rs -sSf | sh
If you already have Rust installed, make sure you're using the latest version by running:
rustup update
Once done, finish installing the support software:
sudo apt install build-essential git clang libclang-dev pkg-config libssl-dev
Build the client by cloning this repository and running the following commands from the root directory of the repo:
git checkout <latest tagged release>
./scripts/init.sh
cargo build --release
Note that compilation is a memory intensive process. We recommend having 4 GiB of physical RAM or swap available (keep in mind that if a build hits swap it tends to be very slow).
Build from Source with Docker
You can also build from source using Parity CI docker image:
git checkout <latest tagged release>
docker run --rm -it -w /shellhere/polkadot \
-v $(pwd):/shellhere/polkadot \
paritytech/ci-linux:production cargo build --release
sudo chown -R $(id -u):$(id -g) target/
If you want to reproduce other steps of CI process you can use the following guide.
Networks
This repo supports runtimes for Polkadot, Kusama, and Westend.
Connect to Polkadot Mainnet
Connect to the global Polkadot Mainnet network by running:
./target/release/polkadot --chain=polkadot
You can see your node on telemetry (set a custom name with --name "my custom name").
Connect to the "Kusama" Canary Network
Connect to the global Kusama canary network by running:
./target/release/polkadot --chain=kusama
You can see your node on telemetry (set a custom name with --name "my custom name").
Connect to the Westend Testnet
Connect to the global Westend testnet by running:
./target/release/polkadot --chain=westend
You can see your node on telemetry (set a custom name with --name "my custom name").
Obtaining DOTs
If you want to do anything on Polkadot, Kusama, or Westend, then you'll need to get an account and some DOT, KSM, or WND tokens, respectively. See the claims instructions for Polkadot if you have DOTs to claim. For Westend's WND tokens, see the faucet instructions on the Wiki.
Hacking on Polkadot
If you'd actually like to hack on Polkadot, you can grab the source code and build it. Ensure you have Rust and the support software installed. This script will install or update Rust and install the required dependencies (this may take up to 30 minutes on Mac machines):
curl https://getsubstrate.io -sSf | bash -s -- --fast
Then, grab the Polkadot source code:
git clone https://github.com/paritytech/polkadot.git
cd polkadot
Then build the code. You will need to build in release mode (--release) to start a network. Only
use debug mode for development (faster compile times for development and testing).
./scripts/init.sh # Install WebAssembly. Update Rust
cargo build # Builds all native code
You can run the tests if you like:
cargo test --all --release
You can start a development chain with:
cargo run -- --dev
Detailed logs may be shown by running the node with the following environment variables set:
RUST_LOG=debug RUST_BACKTRACE=1 cargo run -- --dev
Development
You can run a simple single-node development "network" on your machine by running:
polkadot --dev
You can muck around by heading to https://polkadot.js.org/apps and choose "Local Node" from the Settings menu.
Local Two-node Testnet
If you want to see the multi-node consensus algorithm in action locally, then you can create a local testnet. You'll need two terminals open. In one, run:
polkadot --chain=polkadot-local --alice -d /tmp/alice
And in the other, run:
polkadot --chain=polkadot-local --bob -d /tmp/bob --port 30334 --bootnodes '/ip4/127.0.0.1/tcp/30333/p2p/ALICE_BOOTNODE_ID_HERE'
Ensure you replace ALICE_BOOTNODE_ID_HERE with the node ID from the output of the first terminal.
Monitoring
Once you set this up you can take a look at the Polkadot Grafana dashboards that we currently maintain.
Using Docker
Shell Completion
Contributing
Contributing Guidelines
Contributor Code of Conduct
License
Polkadot is GPL 3.0 licensed.