mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-07-03 13:27:23 +00:00
Kian Peymani
a57e649f6b
* Enable equalise. * Bump. * Line-width * Add benchmarks for equalise. * Line-width * Re-trigger CI. * Fix test. * Some nits. * Rename. * Bump.
196 lines
6.6 KiB
Rust
196 lines
6.6 KiB
Rust
// Copyright 2019 Parity Technologies
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//! Benchmarks of the phragmen election algorithm.
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//! Note that execution times will not be accurate in an absolute scale, since
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//! - Everything is executed in the context of `TestExternalities`
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//! - Everything is executed in native environment.
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//!
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//! Run using:
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//!
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//! ```zsh
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//! cargo bench --features bench --color always
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//! ```
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use test::Bencher;
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use runtime_io::with_externalities;
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use mock::*;
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use super::*;
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use rand::{self, Rng};
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const VALIDATORS: u64 = 1000;
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const NOMINATORS: u64 = 10_000;
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const EDGES: u64 = 2;
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const TO_ELECT: usize = 100;
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const STAKE: u64 = 1000;
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fn do_phragmen(
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b: &mut Bencher,
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num_vals: u64,
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num_noms: u64,
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count: usize,
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votes_per: u64,
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eq_iters: usize,
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eq_tolerance: u128,
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) {
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with_externalities(&mut ExtBuilder::default().nominate(false).build(), || {
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assert!(num_vals > votes_per);
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let rr = |a, b| rand::thread_rng().gen_range(a as usize, b as usize) as u64;
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// prefix to distinguish the validator and nominator account ranges.
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let np = 10_000;
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(1 ..= 2*num_vals)
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.step_by(2)
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.for_each(|acc| bond_validator(acc, STAKE + rr(10, 50)));
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(np ..= (np + 2*num_noms))
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.step_by(2)
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.for_each(|acc| {
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let mut stashes_to_vote = (1 ..= 2*num_vals)
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.step_by(2)
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.map(|ctrl| ctrl + 1)
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.collect::<Vec<AccountId>>();
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let votes = (0 .. votes_per)
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.map(|_| {
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stashes_to_vote.remove(rr(0, stashes_to_vote.len()) as usize)
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})
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.collect::<Vec<AccountId>>();
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bond_nominator(acc, STAKE + rr(10, 50), votes);
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});
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b.iter(|| {
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let r = phragmen::elect::<Test, _, _, _>(
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count,
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1_usize,
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<Validators<Test>>::enumerate(),
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<Nominators<Test>>::enumerate(),
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Staking::slashable_balance_of
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).unwrap();
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// Do the benchmarking with equalize.
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if eq_iters > 0 {
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let elected_stashes = r.0;
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let assignments = r.1;
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let to_balance = |b: ExtendedBalance|
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<<mock::Test as Trait>::CurrencyToVote as Convert<ExtendedBalance, Balance>>::convert(b);
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let to_votes = |b: Balance|
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<<mock::Test as Trait>::CurrencyToVote as Convert<Balance, u64>>::convert(b) as ExtendedBalance;
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let ratio_of = |b, p| (p as ExtendedBalance).saturating_mul(to_votes(b)) / ACCURACY;
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let assignments_with_stakes = assignments.into_iter().map(|(n, a)|(
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n,
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Staking::slashable_balance_of(&n),
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a.into_iter().map(|(acc, r)| (
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acc.clone(),
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r,
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to_balance(ratio_of(Staking::slashable_balance_of(&n), r)),
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))
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.collect::<Vec<Assignment<Test>>>()
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)).collect::<Vec<(AccountId, Balance, Vec<Assignment<Test>>)>>();
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let mut exposures = <ExpoMap<Test>>::new();
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elected_stashes
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.into_iter()
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.map(|e| (e, Staking::slashable_balance_of(&e)))
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.for_each(|(e, s)| {
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let item = Exposure { own: s, total: s, ..Default::default() };
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exposures.insert(e, item);
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});
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for (n, _, assignment) in &assignments_with_stakes {
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for (c, _, s) in assignment {
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if let Some(expo) = exposures.get_mut(c) {
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expo.total = expo.total.saturating_add(*s);
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expo.others.push( IndividualExposure { who: n.clone(), value: *s } );
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}
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}
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}
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let mut assignments_with_votes = assignments_with_stakes.into_iter()
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.map(|a| (
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a.0, a.1,
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a.2.into_iter()
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.map(|e| (e.0, e.1, to_votes(e.2)))
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.collect::<Vec<(AccountId, ExtendedBalance, ExtendedBalance)>>()
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))
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.collect::<Vec<(
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AccountId,
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Balance,
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Vec<(AccountId, ExtendedBalance, ExtendedBalance)>
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)>>();
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equalize::<Test>(&mut assignments_with_votes, &mut exposures, eq_tolerance, eq_iters);
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}
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})
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})
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}
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macro_rules! phragmen_benches {
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($($name:ident: $tup:expr,)*) => {
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$(
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#[bench]
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fn $name(b: &mut Bencher) {
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let (v, n, t, e, eq_iter, eq_tol) = $tup;
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println!("");
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println!(
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r#"
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++ Benchmark: {} Validators // {} Nominators // {} Edges-per-nominator // {} total edges //
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electing {} // Equalize: {} iterations -- {} tolerance"#,
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v, n, e, e * n, t, eq_iter, eq_tol,
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);
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do_phragmen(b, v, n, t, e, eq_iter, eq_tol);
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}
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)*
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}
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}
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phragmen_benches! {
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bench_1_1: (VALIDATORS, NOMINATORS, TO_ELECT, EDGES, 0, 0),
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bench_1_2: (VALIDATORS*2, NOMINATORS, TO_ELECT, EDGES, 0, 0),
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bench_1_3: (VALIDATORS*4, NOMINATORS, TO_ELECT, EDGES, 0, 0),
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bench_1_4: (VALIDATORS*8, NOMINATORS, TO_ELECT, EDGES, 0, 0),
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bench_1_1_eq: (VALIDATORS, NOMINATORS, TO_ELECT, EDGES, 2, 0),
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bench_1_2_eq: (VALIDATORS*2, NOMINATORS, TO_ELECT, EDGES, 2, 0),
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bench_1_3_eq: (VALIDATORS*4, NOMINATORS, TO_ELECT, EDGES, 2, 0),
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bench_1_4_eq: (VALIDATORS*8, NOMINATORS, TO_ELECT, EDGES, 2, 0),
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bench_0_1: (VALIDATORS, NOMINATORS, TO_ELECT, EDGES, 0, 0),
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bench_0_2: (VALIDATORS, NOMINATORS, TO_ELECT * 4, EDGES, 0, 0),
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bench_0_3: (VALIDATORS, NOMINATORS, TO_ELECT * 8, EDGES, 0, 0),
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bench_0_4: (VALIDATORS, NOMINATORS, TO_ELECT * 16, EDGES , 0, 0),
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bench_0_1_eq: (VALIDATORS, NOMINATORS, TO_ELECT, EDGES, 2, 0),
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bench_0_2_eq: (VALIDATORS, NOMINATORS, TO_ELECT * 4, EDGES, 2, 0),
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bench_0_3_eq: (VALIDATORS, NOMINATORS, TO_ELECT * 8, EDGES, 2, 0),
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bench_0_4_eq: (VALIDATORS, NOMINATORS, TO_ELECT * 16, EDGES , 2, 0),
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bench_2_1: (VALIDATORS, NOMINATORS, TO_ELECT, EDGES, 0, 0),
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bench_2_2: (VALIDATORS, NOMINATORS*2, TO_ELECT, EDGES, 0, 0),
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bench_2_3: (VALIDATORS, NOMINATORS*4, TO_ELECT, EDGES, 0, 0),
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bench_2_4: (VALIDATORS, NOMINATORS*8, TO_ELECT, EDGES, 0, 0),
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bench_2_1_eq: (VALIDATORS, NOMINATORS, TO_ELECT, EDGES, 2, 0),
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bench_2_2_eq: (VALIDATORS, NOMINATORS*2, TO_ELECT, EDGES, 2, 0),
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bench_2_3_eq: (VALIDATORS, NOMINATORS*4, TO_ELECT, EDGES, 2, 0),
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bench_2_4_eq: (VALIDATORS, NOMINATORS*8, TO_ELECT, EDGES, 2, 0),
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bench_3_1: (VALIDATORS, NOMINATORS, TO_ELECT, EDGES, 0, 0 ),
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bench_3_2: (VALIDATORS, NOMINATORS, TO_ELECT, EDGES*2, 0, 0),
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bench_3_3: (VALIDATORS, NOMINATORS, TO_ELECT, EDGES*4, 0, 0),
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bench_3_4: (VALIDATORS, NOMINATORS, TO_ELECT, EDGES*8, 0, 0),
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bench_3_1_eq: (VALIDATORS, NOMINATORS, TO_ELECT, EDGES, 2, 0),
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bench_3_2_eq: (VALIDATORS, NOMINATORS, TO_ELECT, EDGES*2, 2, 0),
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bench_3_3_eq: (VALIDATORS, NOMINATORS, TO_ELECT, EDGES*4, 2, 0),
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bench_3_4_eq: (VALIDATORS, NOMINATORS, TO_ELECT, EDGES*8, 2, 0),
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}
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