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https://github.com/pezkuwichain/pezkuwi-subxt.git
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80616f6d03
[litep2p](https://github.com/altonen/litep2p) is a libp2p-compatible P2P networking library. It supports all of the features of `rust-libp2p` that are currently being utilized by Polkadot SDK. Compared to `rust-libp2p`, `litep2p` has a quite different architecture which is why the new `litep2p` network backend is only able to use a little of the existing code in `sc-network`. The design has been mainly influenced by how we'd wish to structure our networking-related code in Polkadot SDK: independent higher-levels protocols directly communicating with the network over links that support bidirectional backpressure. A good example would be `NotificationHandle`/`RequestResponseHandle` abstractions which allow, e.g., `SyncingEngine` to directly communicate with peers to announce/request blocks. I've tried running `polkadot --network-backend litep2p` with a few different peer configurations and there is a noticeable reduction in networking CPU usage. For high load (`--out-peers 200`), networking CPU usage goes down from ~110% to ~30% (80 pp) and for normal load (`--out-peers 40`), the usage goes down from ~55% to ~18% (37 pp). These should not be taken as final numbers because: a) there are still some low-hanging optimization fruits, such as enabling [receive window auto-tuning](https://github.com/libp2p/rust-yamux/pull/176), integrating `Peerset` more closely with `litep2p` or improving memory usage of the WebSocket transport b) fixing bugs/instabilities that incorrectly cause `litep2p` to do less work will increase the networking CPU usage c) verification in a more diverse set of tests/conditions is needed Nevertheless, these numbers should give an early estimate for CPU usage of the new networking backend. This PR consists of three separate changes: * introduce a generic `PeerId` (wrapper around `Multihash`) so that we don't have use `NetworkService::PeerId` in every part of the code that uses a `PeerId` * introduce `NetworkBackend` trait, implement it for the libp2p network stack and make Polkadot SDK generic over `NetworkBackend` * implement `NetworkBackend` for litep2p The new library should be considered experimental which is why `rust-libp2p` will remain as the default option for the time being. This PR currently depends on the master branch of `litep2p` but I'll cut a new release for the library once all review comments have been addresses. --------- Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> Co-authored-by: Dmitry Markin <dmitry@markin.tech> Co-authored-by: Alexandru Vasile <60601340+lexnv@users.noreply.github.com> Co-authored-by: Alexandru Vasile <alexandru.vasile@parity.io>
277 lines
7.8 KiB
Rust
277 lines
7.8 KiB
Rust
// This file is part of Substrate.
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// Copyright (C) Parity Technologies (UK) Ltd.
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// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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use std::time::Duration;
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use criterion::{criterion_group, criterion_main, BatchSize, Criterion, Throughput};
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use futures::{future, StreamExt};
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use kitchensink_runtime::{constants::currency::*, BalancesCall, SudoCall};
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use node_cli::service::{create_extrinsic, fetch_nonce, FullClient, TransactionPool};
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use node_primitives::AccountId;
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use sc_service::{
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config::{
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BlocksPruning, DatabaseSource, KeystoreConfig, NetworkConfiguration, OffchainWorkerConfig,
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PruningMode, RpcBatchRequestConfig, TransactionPoolOptions,
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},
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BasePath, Configuration, Role,
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};
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use sc_transaction_pool::PoolLimit;
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use sc_transaction_pool_api::{TransactionPool as _, TransactionSource, TransactionStatus};
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use sp_core::{crypto::Pair, sr25519};
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use sp_keyring::Sr25519Keyring;
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use sp_runtime::OpaqueExtrinsic;
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use staging_node_cli as node_cli;
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use tokio::runtime::Handle;
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fn new_node(tokio_handle: Handle) -> node_cli::service::NewFullBase {
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let base_path = BasePath::new_temp_dir().expect("Creates base path");
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let root = base_path.path().to_path_buf();
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let network_config = NetworkConfiguration::new(
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Sr25519Keyring::Alice.to_seed(),
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"network/test/0.1",
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Default::default(),
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None,
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);
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let spec = Box::new(node_cli::chain_spec::development_config());
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let config = Configuration {
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impl_name: "BenchmarkImpl".into(),
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impl_version: "1.0".into(),
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role: Role::Authority,
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tokio_handle: tokio_handle.clone(),
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transaction_pool: TransactionPoolOptions {
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ready: PoolLimit { count: 100_000, total_bytes: 100 * 1024 * 1024 },
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future: PoolLimit { count: 100_000, total_bytes: 100 * 1024 * 1024 },
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reject_future_transactions: false,
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ban_time: Duration::from_secs(30 * 60),
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},
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network: network_config,
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keystore: KeystoreConfig::InMemory,
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database: DatabaseSource::RocksDb { path: root.join("db"), cache_size: 128 },
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trie_cache_maximum_size: Some(64 * 1024 * 1024),
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state_pruning: Some(PruningMode::ArchiveAll),
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blocks_pruning: BlocksPruning::KeepAll,
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chain_spec: spec,
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wasm_method: Default::default(),
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rpc_addr: None,
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rpc_max_connections: Default::default(),
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rpc_cors: None,
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rpc_methods: Default::default(),
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rpc_max_request_size: Default::default(),
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rpc_max_response_size: Default::default(),
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rpc_id_provider: Default::default(),
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rpc_max_subs_per_conn: Default::default(),
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rpc_port: 9944,
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rpc_message_buffer_capacity: Default::default(),
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rpc_batch_config: RpcBatchRequestConfig::Unlimited,
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rpc_rate_limit: None,
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prometheus_config: None,
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telemetry_endpoints: None,
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default_heap_pages: None,
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offchain_worker: OffchainWorkerConfig { enabled: true, indexing_enabled: false },
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force_authoring: false,
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disable_grandpa: false,
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dev_key_seed: Some(Sr25519Keyring::Alice.to_seed()),
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tracing_targets: None,
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tracing_receiver: Default::default(),
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max_runtime_instances: 8,
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runtime_cache_size: 2,
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announce_block: true,
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data_path: base_path.path().into(),
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base_path,
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informant_output_format: Default::default(),
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wasm_runtime_overrides: None,
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};
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tokio_handle.block_on(async move {
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node_cli::service::new_full_base::<sc_network::NetworkWorker<_, _>>(
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config,
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None,
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false,
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|_, _| (),
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)
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.expect("Creates node")
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})
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}
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fn create_accounts(num: usize) -> Vec<sr25519::Pair> {
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(0..num)
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.map(|i| {
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Pair::from_string(&format!("{}/{}", Sr25519Keyring::Alice.to_seed(), i), None)
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.expect("Creates account pair")
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})
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.collect()
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}
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/// Create the extrinsics that will initialize the accounts from the sudo account (Alice).
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///
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/// `start_nonce` is the current nonce of Alice.
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fn create_account_extrinsics(
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client: &FullClient,
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accounts: &[sr25519::Pair],
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) -> Vec<OpaqueExtrinsic> {
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let start_nonce = fetch_nonce(client, Sr25519Keyring::Alice.pair());
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accounts
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.iter()
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.enumerate()
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.flat_map(|(i, a)| {
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vec![
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// Reset the nonce by removing any funds
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create_extrinsic(
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client,
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Sr25519Keyring::Alice.pair(),
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SudoCall::sudo {
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call: Box::new(
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BalancesCall::force_set_balance {
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who: AccountId::from(a.public()).into(),
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new_free: 0,
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}
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.into(),
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),
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},
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Some(start_nonce + (i as u32) * 2),
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),
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// Give back funds
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create_extrinsic(
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client,
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Sr25519Keyring::Alice.pair(),
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SudoCall::sudo {
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call: Box::new(
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BalancesCall::force_set_balance {
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who: AccountId::from(a.public()).into(),
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new_free: 1_000_000 * DOLLARS,
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}
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.into(),
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),
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},
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Some(start_nonce + (i as u32) * 2 + 1),
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),
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]
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})
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.map(OpaqueExtrinsic::from)
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.collect()
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}
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fn create_benchmark_extrinsics(
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client: &FullClient,
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accounts: &[sr25519::Pair],
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extrinsics_per_account: usize,
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) -> Vec<OpaqueExtrinsic> {
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accounts
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.iter()
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.flat_map(|account| {
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(0..extrinsics_per_account).map(move |nonce| {
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create_extrinsic(
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client,
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account.clone(),
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BalancesCall::transfer_allow_death {
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dest: Sr25519Keyring::Bob.to_account_id().into(),
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value: 1 * DOLLARS,
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},
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Some(nonce as u32),
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)
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})
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})
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.map(OpaqueExtrinsic::from)
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.collect()
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}
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async fn submit_tx_and_wait_for_inclusion(
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tx_pool: &TransactionPool,
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tx: OpaqueExtrinsic,
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client: &FullClient,
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wait_for_finalized: bool,
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) {
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let best_hash = client.chain_info().best_hash;
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let mut watch = tx_pool
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.submit_and_watch(best_hash, TransactionSource::External, tx.clone())
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.await
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.expect("Submits tx to pool")
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.fuse();
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loop {
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match watch.select_next_some().await {
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TransactionStatus::Finalized(_) => break,
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TransactionStatus::InBlock(_) if !wait_for_finalized => break,
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_ => {},
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}
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}
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}
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fn transaction_pool_benchmarks(c: &mut Criterion) {
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sp_tracing::try_init_simple();
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let runtime = tokio::runtime::Runtime::new().expect("Creates tokio runtime");
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let tokio_handle = runtime.handle().clone();
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let node = new_node(tokio_handle.clone());
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let account_num = 10;
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let extrinsics_per_account = 2000;
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let accounts = create_accounts(account_num);
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let mut group = c.benchmark_group("Transaction pool");
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group.sample_size(10);
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group.throughput(Throughput::Elements(account_num as u64 * extrinsics_per_account as u64));
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let mut counter = 1;
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group.bench_function(
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format!("{} transfers from {} accounts", account_num * extrinsics_per_account, account_num),
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move |b| {
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b.iter_batched(
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|| {
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let prepare_extrinsics = create_account_extrinsics(&node.client, &accounts);
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runtime.block_on(future::join_all(prepare_extrinsics.into_iter().map(|tx| {
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submit_tx_and_wait_for_inclusion(
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&node.transaction_pool,
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tx,
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&node.client,
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true,
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)
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})));
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create_benchmark_extrinsics(&node.client, &accounts, extrinsics_per_account)
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},
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|extrinsics| {
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runtime.block_on(future::join_all(extrinsics.into_iter().map(|tx| {
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submit_tx_and_wait_for_inclusion(
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&node.transaction_pool,
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tx,
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&node.client,
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false,
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)
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})));
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println!("Finished {}", counter);
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counter += 1;
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},
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BatchSize::SmallInput,
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)
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},
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);
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}
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criterion_group!(benches, transaction_pool_benchmarks);
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criterion_main!(benches);
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