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Don't use fixed nominator count for report_equivocation weight calculation (#14471)

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* babe: fix report_equivocation weight calculation

* grandpa: fix report_equivocation weight calculation

* beefy: fix report_equivocation weight calculation

* runtime: add missing MaxNominators constant
This commit is contained in:
André Silva
2023-07-18 15:11:00 +01:00
committed by GitHub
parent a3a04c7e4d
commit 50a63c30d9
16 changed files with 59 additions and 36 deletions
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substrate/frame/beefy/src/default_weights.rs
+4 -7
View File
@@ -24,14 +24,11 @@ use frame_support::weights::{
};
impl crate::WeightInfo for () {
fn report_equivocation(validator_count: u32) -> Weight {
fn report_equivocation(validator_count: u32, max_nominators_per_validator: u32) -> Weight {
// we take the validator set count from the membership proof to
// calculate the weight but we set a floor of 100 validators.
let validator_count = validator_count.max(100) as u64;
// worst case we are considering is that the given offender is backed by 200 nominators
const MAX_NOMINATORS: u64 = 200;
// checking membership proof
Weight::from_parts(35u64 * WEIGHT_REF_TIME_PER_MICROS, 0)
.saturating_add(
@@ -44,11 +41,11 @@ impl crate::WeightInfo for () {
// report offence
.saturating_add(Weight::from_parts(110u64 * WEIGHT_REF_TIME_PER_MICROS, 0))
.saturating_add(Weight::from_parts(
25u64 * WEIGHT_REF_TIME_PER_MICROS * MAX_NOMINATORS,
25u64 * WEIGHT_REF_TIME_PER_MICROS * max_nominators_per_validator as u64,
0,
))
.saturating_add(DbWeight::get().reads(14 + 3 * MAX_NOMINATORS))
.saturating_add(DbWeight::get().writes(10 + 3 * MAX_NOMINATORS))
.saturating_add(DbWeight::get().reads(14 + 3 * max_nominators_per_validator as u64))
.saturating_add(DbWeight::get().writes(10 + 3 * max_nominators_per_validator as u64))
// fetching set id -> session index mappings
.saturating_add(DbWeight::get().reads(2))
}
substrate/frame/beefy/src/lib.rs
+13 -3
View File
@@ -78,6 +78,10 @@ pub mod pallet {
#[pallet::constant]
type MaxAuthorities: Get<u32>;
/// The maximum number of nominators for each validator.
#[pallet::constant]
type MaxNominators: Get<u32>;
/// The maximum number of entries to keep in the set id to session index mapping.
///
/// Since the `SetIdSession` map is only used for validating equivocations this
@@ -203,7 +207,10 @@ pub mod pallet {
/// against the extracted offender. If both are valid, the offence
/// will be reported.
#[pallet::call_index(0)]
#[pallet::weight(T::WeightInfo::report_equivocation(key_owner_proof.validator_count()))]
#[pallet::weight(T::WeightInfo::report_equivocation(
key_owner_proof.validator_count(),
T::MaxNominators::get(),
))]
pub fn report_equivocation(
origin: OriginFor<T>,
equivocation_proof: Box<
@@ -235,7 +242,10 @@ pub mod pallet {
/// if the block author is defined it will be defined as the equivocation
/// reporter.
#[pallet::call_index(1)]
#[pallet::weight(T::WeightInfo::report_equivocation(key_owner_proof.validator_count()))]
#[pallet::weight(T::WeightInfo::report_equivocation(
key_owner_proof.validator_count(),
T::MaxNominators::get(),
))]
pub fn report_equivocation_unsigned(
origin: OriginFor<T>,
equivocation_proof: Box<
@@ -441,5 +451,5 @@ impl<T: Config> IsMember<T::BeefyId> for Pallet<T> {
}
pub trait WeightInfo {
fn report_equivocation(validator_count: u32) -> Weight;
fn report_equivocation(validator_count: u32, max_nominators_per_validator: u32) -> Weight;
}
substrate/frame/beefy/src/mock.rs
+1
View File
@@ -110,6 +110,7 @@ parameter_types! {
impl pallet_beefy::Config for Test {
type BeefyId = BeefyId;
type MaxAuthorities = ConstU32<100>;
type MaxNominators = ConstU32<1000>;
type MaxSetIdSessionEntries = MaxSetIdSessionEntries;
type OnNewValidatorSet = ();
type WeightInfo = ();
substrate/frame/beefy/src/tests.rs
+2 -2
View File
@@ -716,7 +716,7 @@ fn report_equivocation_has_valid_weight() {
// the weight depends on the size of the validator set,
// but there's a lower bound of 100 validators.
assert!((1..=100)
.map(<Test as Config>::WeightInfo::report_equivocation)
.map(|validators| <Test as Config>::WeightInfo::report_equivocation(validators, 1000))
.collect::<Vec<_>>()
.windows(2)
.all(|w| w[0] == w[1]));
@@ -724,7 +724,7 @@ fn report_equivocation_has_valid_weight() {
// after 100 validators the weight should keep increasing
// with every extra validator.
assert!((100..=1000)
.map(<Test as Config>::WeightInfo::report_equivocation)
.map(|validators| <Test as Config>::WeightInfo::report_equivocation(validators, 1000))
.collect::<Vec<_>>()
.windows(2)
.all(|w| w[0].ref_time() < w[1].ref_time()));