remove the uselsss weight return type from election provider API (#9569)

* remove the uselsss weight return type from election provider API * fix everything, should be ready for final benchmark * simplify on_init a bit furhter * cargo run --quiet --release --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark --chain=dev --steps=50 --repeat=20 --pallet=pallet_election_provider_multi_phase --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/election-provider-multi-phase/src/weights.rs --template=./.maintain/frame-weight-template.hbs * cargo run --quiet --release --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark --chain=dev --steps=50 --repeat=20 --pallet=pallet_staking --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/staking/src/weights.rs --template=./.maintain/frame-weight-template.hbs * remove unwraps * fmt * Update lock file * whitelist block weight * cargo run --quiet --release --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark --chain=dev --steps=50 --repeat=20 --pallet=pallet_election_provider_multi_phase --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/election-provider-multi-phase/src/weights.rs --template=./.maintain/frame-weight-template.hbs * cargo run --quiet --release --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark --chain=dev --steps=50 --repeat=20 --pallet=pallet_staking --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/staking/src/weights.rs --template=./.maintain/frame-weight-template.hbs * fix warning Co-authored-by: Parity Benchmarking Bot <admin@parity.io>
2026-05-30 04:41:03 +00:00 · 2021-08-19 08:45:54 +01:00
parent 354b77fb88
commit 7a32c3504d
22 changed files with 552 additions and 556 deletions
@@ -36,6 +36,8 @@ rand = { version = "0.7.3", default-features = false, optional = true, features
 	"alloc",
 	"small_rng",
 ] }
+strum = { optional = true, version = "0.21.0" }
+strum_macros = { optional = true, version = "0.21.1" }

 [dev-dependencies]
 parking_lot = "0.11.0"
@@ -45,7 +47,6 @@ sp-io = { version = "4.0.0-dev", path = "../../primitives/io" }
 sp-npos-elections = { version = "4.0.0-dev", default-features = false, path = "../../primitives/npos-elections" }
 sp-tracing = { version = "4.0.0-dev", path = "../../primitives/tracing" }
 frame-election-provider-support = { version = "4.0.0-dev", features = [
-	"runtime-benchmarks",
 ], path = "../election-provider-support" }
 pallet-balances = { version = "4.0.0-dev", path = "../balances" }
 frame-benchmarking = { version = "4.0.0-dev", path = "../benchmarking" }
@@ -68,5 +69,11 @@ std = [
 	"frame-election-provider-support/std",
 	"log/std",
 ]
-runtime-benchmarks = ["frame-benchmarking", "rand"]
+runtime-benchmarks = [
+	"frame-benchmarking",
+	"frame-election-provider-support/runtime-benchmarks",
+	"rand",
+	"strum",
+	"strum_macros",
+]
 try-runtime = ["frame-support/try-runtime"]
@@ -151,8 +151,6 @@ fn solution_with_size<T: Config>(
 }

 fn set_up_data_provider<T: Config>(v: u32, t: u32) {
-	// number of votes in snapshot.
-
 	T::DataProvider::clear();
 	log!(
 		info,
@@ -192,37 +190,22 @@ frame_benchmarking::benchmarks! {
 	}

 	on_initialize_open_signed {
-		// NOTE: this benchmark currently doesn't have any components because the length of a db
-		// read/write is not captured. Otherwise, it is quite influenced by how much data
-		// `T::ElectionDataProvider` is reading and passing on.
 		assert!(<MultiPhase<T>>::snapshot().is_none());
 		assert!(<MultiPhase<T>>::current_phase().is_off());
 	}: {
-		<MultiPhase<T>>::on_initialize_open_signed().unwrap();
+		<MultiPhase<T>>::on_initialize_open_signed();
 	} verify {
-		assert!(<MultiPhase<T>>::snapshot().is_some());
+		assert!(<MultiPhase<T>>::snapshot().is_none());
 		assert!(<MultiPhase<T>>::current_phase().is_signed());
 	}

-	on_initialize_open_unsigned_with_snapshot {
+	on_initialize_open_unsigned {
 		assert!(<MultiPhase<T>>::snapshot().is_none());
 		assert!(<MultiPhase<T>>::current_phase().is_off());
 	}: {
-		<MultiPhase<T>>::on_initialize_open_unsigned(true, true, 1u32.into()).unwrap();
+		<MultiPhase<T>>::on_initialize_open_unsigned(true, 1u32.into())
 	} verify {
-		assert!(<MultiPhase<T>>::snapshot().is_some());
-		assert!(<MultiPhase<T>>::current_phase().is_unsigned());
-	}
-
-	on_initialize_open_unsigned_without_snapshot {
-		// need to assume signed phase was open before
-		<MultiPhase<T>>::on_initialize_open_signed().unwrap();
-		assert!(<MultiPhase<T>>::snapshot().is_some());
-		assert!(<MultiPhase<T>>::current_phase().is_signed());
-	}: {
-		<MultiPhase<T>>::on_initialize_open_unsigned(false, true, 1u32.into()).unwrap();
-	} verify {
-		assert!(<MultiPhase<T>>::snapshot().is_some());
+		assert!(<MultiPhase<T>>::snapshot().is_none());
 		assert!(<MultiPhase<T>>::current_phase().is_unsigned());
 	}

@@ -259,30 +242,51 @@ frame_benchmarking::benchmarks! {
 		assert_eq!(T::Currency::reserved_balance(&receiver), 0u32.into());
 	}

+	create_snapshot_internal {
+		// number of votes in snapshot. Fixed to maximum.
+		let v = T::BenchmarkingConfig::SNAPSHOT_MAXIMUM_VOTERS;
+		// number of targets in snapshot. Fixed to maximum.
+		let t = T::BenchmarkingConfig::MAXIMUM_TARGETS;
+
+		// we don't directly need the data-provider to be populated, but it is just easy to use it.
+		set_up_data_provider::<T>(v, t);
+		let targets = T::DataProvider::targets(None)?;
+		let voters = T::DataProvider::voters(None)?;
+		let desired_targets = T::DataProvider::desired_targets()?;
+		assert!(<MultiPhase<T>>::snapshot().is_none());
+	}: {
+		<MultiPhase::<T>>::create_snapshot_internal(targets, voters, desired_targets)
+	} verify {
+		assert!(<MultiPhase<T>>::snapshot().is_some());
+		assert_eq!(<MultiPhase<T>>::snapshot_metadata().ok_or("metadata missing")?.voters, v + t);
+		assert_eq!(<MultiPhase<T>>::snapshot_metadata().ok_or("metadata missing")?.targets, t);
+	}
+
 	// a call to `<Pallet as ElectionProvider>::elect` where we only return the queued solution.
 	elect_queued {
-		// number of votes in snapshot.
-		let v in (T::BenchmarkingConfig::VOTERS[0]) .. T::BenchmarkingConfig::VOTERS[1];
-		// number of targets in snapshot.
-		let t in (T::BenchmarkingConfig::TARGETS[0]) .. T::BenchmarkingConfig::TARGETS[1];
 		// number of assignments, i.e. solution.len(). This means the active nominators, thus must be
-		// a subset of `v` component.
+		// a subset of `v`.
 		let a in (T::BenchmarkingConfig::ACTIVE_VOTERS[0]) .. T::BenchmarkingConfig::ACTIVE_VOTERS[1];
-		// number of desired targets. Must be a subset of `t` component.
+		// number of desired targets. Must be a subset of `t`.
 		let d in (T::BenchmarkingConfig::DESIRED_TARGETS[0]) .. T::BenchmarkingConfig::DESIRED_TARGETS[1];

+		// number of votes in snapshot. Not dominant.
+		let v  = T::BenchmarkingConfig::VOTERS[1];
+		// number of targets in snapshot. Not dominant.
+		let t = T::BenchmarkingConfig::TARGETS[1];
+
 		let witness = SolutionOrSnapshotSize { voters: v, targets: t };
 		let raw_solution = solution_with_size::<T>(witness, a, d)?;
 		let ready_solution =
-			<MultiPhase<T>>::feasibility_check(raw_solution, ElectionCompute::Signed).unwrap();
+			<MultiPhase<T>>::feasibility_check(raw_solution, ElectionCompute::Signed)?;
+		<CurrentPhase<T>>::put(Phase::Signed);
+		// assume a queued solution is stored, regardless of where it comes from.
+		<QueuedSolution<T>>::put(ready_solution);

 		// these are set by the `solution_with_size` function.
 		assert!(<DesiredTargets<T>>::get().is_some());
 		assert!(<Snapshot<T>>::get().is_some());
 		assert!(<SnapshotMetadata<T>>::get().is_some());
-		<CurrentPhase<T>>::put(Phase::Signed);
-		// assume a queued solution is stored, regardless of where it comes from.
-		<QueuedSolution<T>>::put(ready_solution);
 	}: {
 		assert_ok!(<MultiPhase<T> as ElectionProvider<T::AccountId, T::BlockNumber>>::elect());
 	} verify {
@@ -303,7 +307,8 @@ frame_benchmarking::benchmarks! {
 			..Default::default()
 		};

-		MultiPhase::<T>::on_initialize_open_signed().expect("should be ok to start signed phase");
+		<MultiPhase<T>>::create_snapshot()?;
+		MultiPhase::<T>::on_initialize_open_signed();
 		<Round<T>>::put(1);

 		let mut signed_submissions = SignedSubmissions::<T>::get();
@@ -346,7 +351,7 @@ frame_benchmarking::benchmarks! {
 		<CurrentPhase<T>>::put(Phase::Unsigned((true, 1u32.into())));

 		// encode the most significant storage item that needs to be decoded in the dispatch.
-		let encoded_snapshot = <MultiPhase<T>>::snapshot().unwrap().encode();
+		let encoded_snapshot = <MultiPhase<T>>::snapshot().ok_or("missing snapshot")?.encode();
 		let encoded_call = <Call<T>>::submit_unsigned(Box::new(raw_solution.clone()), witness).encode();
 	}: {
 		assert_ok!(
@@ -357,8 +362,8 @@ frame_benchmarking::benchmarks! {
 			)
 		);
 		let _decoded_snap = <RoundSnapshot<T::AccountId> as Decode>::decode(&mut &*encoded_snapshot)
-			.unwrap();
-		let _decoded_call = <Call<T> as Decode>::decode(&mut &*encoded_call).unwrap();
+			.expect("decoding should not fail; qed.");
+		let _decoded_call = <Call<T> as Decode>::decode(&mut &*encoded_call).expect("decoding should not fail; qed.");
 	} verify {
 		assert!(<MultiPhase<T>>::queued_solution().is_some());
 	}
@@ -382,10 +387,11 @@ frame_benchmarking::benchmarks! {
 		assert_eq!(raw_solution.solution.unique_targets().len() as u32, d);

 		// encode the most significant storage item that needs to be decoded in the dispatch.
-		let encoded_snapshot = <MultiPhase<T>>::snapshot().unwrap().encode();
+		let encoded_snapshot = <MultiPhase<T>>::snapshot().ok_or("snapshot missing")?.encode();
 	}: {
 		assert_ok!(<MultiPhase<T>>::feasibility_check(raw_solution, ElectionCompute::Unsigned));
-		let _decoded_snap = <RoundSnapshot<T::AccountId> as Decode>::decode(&mut &*encoded_snapshot).unwrap();
+		let _decoded_snap = <RoundSnapshot<T::AccountId> as Decode>::decode(&mut &*encoded_snapshot)
+			.expect("decoding should not fail; qed.");
 	}

 	// NOTE: this weight is not used anywhere, but the fact that it should succeed when execution in
@@ -405,9 +411,8 @@ frame_benchmarking::benchmarks! {
 		// number of votes in snapshot. Fixed to maximum.
 		let v = T::BenchmarkingConfig::MINER_MAXIMUM_VOTERS;
 		// number of targets in snapshot. Fixed to maximum.
-		let t  = T::BenchmarkingConfig::MAXIMUM_TARGETS;
+		let t = T::BenchmarkingConfig::MAXIMUM_TARGETS;

-		T::DataProvider::clear();
 		set_up_data_provider::<T>(v, t);
 		let now = frame_system::Pallet::<T>::block_number();
 		<CurrentPhase<T>>::put(Phase::Unsigned((true, now)));
@@ -428,17 +433,16 @@ frame_benchmarking::benchmarks! {
 		// number of votes in snapshot. Fixed to maximum.
 		let v = T::BenchmarkingConfig::SNAPSHOT_MAXIMUM_VOTERS;
 		// number of targets in snapshot. Fixed to maximum.
-		let t  = T::BenchmarkingConfig::MAXIMUM_TARGETS;
+		let t = T::BenchmarkingConfig::MAXIMUM_TARGETS;

-		T::DataProvider::clear();
 		set_up_data_provider::<T>(v, t);
 		assert!(<MultiPhase<T>>::snapshot().is_none());
 	}: {
-		<MultiPhase::<T>>::create_snapshot().unwrap()
+		<MultiPhase::<T>>::create_snapshot()?
 	} verify {
 		assert!(<MultiPhase<T>>::snapshot().is_some());
-		assert_eq!(<MultiPhase<T>>::snapshot_metadata().unwrap().voters, v + t);
-		assert_eq!(<MultiPhase<T>>::snapshot_metadata().unwrap().targets, t);
+		assert_eq!(<MultiPhase<T>>::snapshot_metadata().ok_or("snapshot missing")?.voters, v + t);
+		assert_eq!(<MultiPhase<T>>::snapshot_metadata().ok_or("snapshot missing")?.targets, t);
 	}

 	#[extra]
@@ -462,10 +466,10 @@ frame_benchmarking::benchmarks! {
 		// assignments
 		let witness = SolutionOrSnapshotSize { voters: v, targets: t };
 		let RawSolution { solution, .. } = solution_with_size::<T>(witness, a, d)?;
-		let RoundSnapshot { voters, targets } = MultiPhase::<T>::snapshot().unwrap();
+		let RoundSnapshot { voters, targets } = MultiPhase::<T>::snapshot().ok_or("snapshot missing")?;
 		let voter_at = helpers::voter_at_fn::<T>(&voters);
 		let target_at = helpers::target_at_fn::<T>(&targets);
-		let mut assignments = solution.into_assignment(voter_at, target_at).unwrap();
+		let mut assignments = solution.into_assignment(voter_at, target_at).expect("solution generated by `solution_with_size` must be valid.");

 		// make a voter cache and some helper functions for access
 		let cache = helpers::generate_voter_cache::<T>(&voters);
@@ -233,7 +233,7 @@ use frame_support::{
 	dispatch::DispatchResultWithPostInfo,
 	ensure,
 	traits::{Currency, Get, OnUnbalanced, ReservableCurrency},
-	weights::Weight,
+	weights::{DispatchClass, Weight},
 };
 use frame_system::{ensure_none, offchain::SendTransactionTypes};
 use sp_arithmetic::{
@@ -254,7 +254,7 @@ use sp_runtime::{
 };
 use sp_std::{convert::TryInto, prelude::*};

-#[cfg(any(feature = "runtime-benchmarks", test))]
+#[cfg(feature = "runtime-benchmarks")]
 mod benchmarking;
 #[cfg(test)]
 mod mock;
@@ -266,12 +266,12 @@ const LOG_TARGET: &'static str = "runtime::election-provider";
 pub mod signed;
 pub mod unsigned;
 pub mod weights;
+pub use weights::WeightInfo;

 pub use signed::{
 	BalanceOf, NegativeImbalanceOf, PositiveImbalanceOf, SignedSubmission, SignedSubmissionOf,
 	SignedSubmissions, SubmissionIndicesOf,
 };
-pub use weights::WeightInfo;

 /// The solution type used by this crate.
 pub type SolutionOf<T> = <T as Config>::Solution;
@@ -290,7 +290,6 @@ pub struct OnChainConfig<T: Config>(sp_std::marker::PhantomData<T>);
 impl<T: Config> onchain::Config for OnChainConfig<T> {
 	type AccountId = T::AccountId;
 	type BlockNumber = T::BlockNumber;
-	type BlockWeights = T::BlockWeights;
 	type Accuracy = T::OnChainAccuracy;
 	type DataProvider = T::DataProvider;
 }
@@ -487,6 +486,7 @@ pub struct SolutionOrSnapshotSize {
 ///
 /// Note that this is different from [`pallet::Error`].
 #[derive(Debug, Eq, PartialEq)]
+#[cfg_attr(feature = "runtime-benchmarks", derive(strum_macros::IntoStaticStr))]
 pub enum ElectionError {
 	/// An error happened in the feasibility check sub-system.
 	Feasibility(FeasibilityError),
@@ -520,6 +520,7 @@ impl From<unsigned::MinerError> for ElectionError {

 /// Errors that can happen in the feasibility check.
 #[derive(Debug, Eq, PartialEq)]
+#[cfg_attr(feature = "runtime-benchmarks", derive(strum_macros::IntoStaticStr))]
 pub enum FeasibilityError {
 	/// Wrong number of winners presented.
 	WrongWinnerCount,
@@ -699,17 +700,15 @@ pub mod pallet {
 			match current_phase {
 				Phase::Off if remaining <= signed_deadline && remaining > unsigned_deadline => {
 					// NOTE: if signed-phase length is zero, second part of the if-condition fails.
-					match Self::on_initialize_open_signed() {
-						Ok(snap_weight) => {
-							log!(info, "Starting signed phase round {}.", Self::round());
-							T::WeightInfo::on_initialize_open_signed().saturating_add(snap_weight)
+					match Self::create_snapshot() {
+						Ok(_) => {
+							Self::on_initialize_open_signed();
+							T::WeightInfo::on_initialize_open_signed()
 						},
 						Err(why) => {
 							// Not much we can do about this at this point.
 							log!(warn, "failed to open signed phase due to {:?}", why);
 							T::WeightInfo::on_initialize_nothing()
-							// NOTE: ^^ The trait specifies that this is a noop in terms of weight
-							// in case of error.
 						},
 					}
 				},
@@ -718,8 +717,7 @@ pub mod pallet {
 				{
 					// our needs vary according to whether or not the unsigned phase follows a
 					// signed phase
-					let (need_snapshot, enabled, signed_weight) = if current_phase == Phase::Signed
-					{
+					let (need_snapshot, enabled) = if current_phase == Phase::Signed {
 						// there was previously a signed phase: close the signed phase, no need for
 						// snapshot.
 						//
@@ -729,35 +727,31 @@ pub mod pallet {
 						//     is a guard against the case that `elect` is called prematurely. This
 						//     adds a small amount of overhead, but that is unfortunately
 						//     unavoidable.
-						let (_success, weight) = Self::finalize_signed_phase();
+						let _ = Self::finalize_signed_phase();
 						// In the future we can consider disabling the unsigned phase if the signed
 						// phase completes successfully, but for now we're enabling it
 						// unconditionally as a defensive measure.
-						(false, true, weight)
+						(false, true)
 					} else {
 						// No signed phase: create a new snapshot, definitely `enable` the unsigned
 						// phase.
-						(true, true, Weight::zero())
+						(true, true)
 					};

-					match Self::on_initialize_open_unsigned(need_snapshot, enabled, now) {
-						Ok(snap_weight) => {
-							log!(info, "Starting unsigned phase({}).", enabled);
-							let base_weight = if need_snapshot {
-								T::WeightInfo::on_initialize_open_unsigned_with_snapshot()
-							} else {
-								T::WeightInfo::on_initialize_open_unsigned_without_snapshot()
-							};
-
-							base_weight.saturating_add(snap_weight).saturating_add(signed_weight)
-						},
-						Err(why) => {
-							// Not much we can do about this at this point.
-							log!(warn, "failed to open unsigned phase due to {:?}", why);
-							T::WeightInfo::on_initialize_nothing()
-							// NOTE: ^^ The trait specifies that this is a noop in terms of weight
-							// in case of error.
-						},
+					if need_snapshot {
+						match Self::create_snapshot() {
+							Ok(_) => {
+								Self::on_initialize_open_unsigned(enabled, now);
+								T::WeightInfo::on_initialize_open_unsigned()
+							},
+							Err(why) => {
+								log!(warn, "failed to open unsigned phase due to {:?}", why);
+								T::WeightInfo::on_initialize_nothing()
+							},
+						}
+					} else {
+						Self::on_initialize_open_unsigned(enabled, now);
+						T::WeightInfo::on_initialize_open_unsigned()
 					}
 				}
 				_ => T::WeightInfo::on_initialize_nothing(),
@@ -1255,70 +1249,31 @@ impl<T: Config> Pallet<T> {
 	}

 	/// Logic for [`<Pallet as Hooks>::on_initialize`] when signed phase is being opened.
-	///
-	/// This is decoupled for easy weight calculation.
-	///
-	/// Returns `Ok(snapshot_weight)` if success, where `snapshot_weight` is the weight that
-	/// needs to recorded for the creation of snapshot.
-	pub fn on_initialize_open_signed() -> Result<Weight, ElectionError> {
-		let weight = Self::create_snapshot()?;
+	pub fn on_initialize_open_signed() {
+		log!(info, "Starting signed phase round {}.", Self::round());
 		<CurrentPhase<T>>::put(Phase::Signed);
 		Self::deposit_event(Event::SignedPhaseStarted(Self::round()));
-		Ok(weight.saturating_add(T::DbWeight::get().writes(1)))
 	}

 	/// Logic for [`<Pallet as Hooks<T>>::on_initialize`] when unsigned phase is being opened.
-	///
-	/// This is decoupled for easy weight calculation.
-	///
-	/// Returns `Ok(snapshot_weight)` if success, where `snapshot_weight` is the weight that
-	/// needs to recorded for the creation of snapshot.
-	pub fn on_initialize_open_unsigned(
-		need_snapshot: bool,
-		enabled: bool,
-		now: T::BlockNumber,
-	) -> Result<Weight, ElectionError> {
-		let weight = if need_snapshot {
-			// If not being followed by a signed phase, then create the snapshots.
-			debug_assert!(Self::snapshot().is_none());
-			Self::create_snapshot()?
-		} else {
-			0
-		};
-
+	pub fn on_initialize_open_unsigned(enabled: bool, now: T::BlockNumber) {
+		let round = Self::round();
+		log!(info, "Starting unsigned phase round {} enabled {}.", round, enabled);
 		<CurrentPhase<T>>::put(Phase::Unsigned((enabled, now)));
-		Self::deposit_event(Event::UnsignedPhaseStarted(Self::round()));
-		Ok(weight.saturating_add(T::DbWeight::get().writes(1)))
+		Self::deposit_event(Event::UnsignedPhaseStarted(round));
 	}

-	/// Creates the snapshot. Writes new data to:
+	/// Parts of [`create_snapshot`] that happen inside of this pallet.
 	///
-	/// 1. [`SnapshotMetadata`]
-	/// 2. [`RoundSnapshot`]
-	/// 3. [`DesiredTargets`]
-	///
-	/// Returns `Ok(consumed_weight)` if operation is okay.
-	pub fn create_snapshot() -> Result<Weight, ElectionError> {
-		let target_limit = <SolutionTargetIndexOf<T>>::max_value().saturated_into::<usize>();
-		let voter_limit = <SolutionVoterIndexOf<T>>::max_value().saturated_into::<usize>();
-
-		let (targets, w1) =
-			T::DataProvider::targets(Some(target_limit)).map_err(ElectionError::DataProvider)?;
-		let (voters, w2) =
-			T::DataProvider::voters(Some(voter_limit)).map_err(ElectionError::DataProvider)?;
-		let (desired_targets, w3) =
-			T::DataProvider::desired_targets().map_err(ElectionError::DataProvider)?;
-
-		// Defensive-only.
-		if targets.len() > target_limit || voters.len() > voter_limit {
-			debug_assert!(false, "Snapshot limit has not been respected.");
-			return Err(ElectionError::DataProvider("Snapshot too big for submission."))
-		}
-
-		// Only write snapshot if all existed.
+	/// Extracted for easier weight calculation.
+	fn create_snapshot_internal(
+		targets: Vec<T::AccountId>,
+		voters: Vec<crate::unsigned::Voter<T>>,
+		desired_targets: u32,
+	) {
 		let metadata =
 			SolutionOrSnapshotSize { voters: voters.len() as u32, targets: targets.len() as u32 };
-		log!(debug, "creating a snapshot with metadata {:?}", metadata);
+		log!(info, "creating a snapshot with metadata {:?}", metadata);

 		<SnapshotMetadata<T>>::put(metadata);
 		<DesiredTargets<T>>::put(desired_targets);
@@ -1328,7 +1283,7 @@ impl<T: Config> Pallet<T> {
 		// allocation.
 		let snapshot = RoundSnapshot { voters, targets };
 		let size = snapshot.encoded_size();
-		log!(info, "snapshot pre-calculated size {:?}", size);
+		log!(debug, "snapshot pre-calculated size {:?}", size);
 		let mut buffer = Vec::with_capacity(size);
 		snapshot.encode_to(&mut buffer);

@@ -1338,10 +1293,60 @@ impl<T: Config> Pallet<T> {
 		debug_assert!(buffer.len() == size && size == buffer.capacity());

 		sp_io::storage::set(&<Snapshot<T>>::hashed_key(), &buffer);
-		Ok(w1
-			.saturating_add(w2)
-			.saturating_add(w3)
-			.saturating_add(T::DbWeight::get().writes(3)))
+	}
+
+	/// Parts of [`create_snapshot`] that happen outside of this pallet.
+	///
+	/// Extracted for easier weight calculation.
+	fn create_snapshot_external(
+	) -> Result<(Vec<T::AccountId>, Vec<crate::unsigned::Voter<T>>, u32), ElectionError> {
+		let target_limit = <SolutionTargetIndexOf<T>>::max_value().saturated_into::<usize>();
+		let voter_limit = <SolutionVoterIndexOf<T>>::max_value().saturated_into::<usize>();
+
+		let targets =
+			T::DataProvider::targets(Some(target_limit)).map_err(ElectionError::DataProvider)?;
+		let voters =
+			T::DataProvider::voters(Some(voter_limit)).map_err(ElectionError::DataProvider)?;
+		let desired_targets =
+			T::DataProvider::desired_targets().map_err(ElectionError::DataProvider)?;
+
+		// Defensive-only.
+		if targets.len() > target_limit || voters.len() > voter_limit {
+			debug_assert!(false, "Snapshot limit has not been respected.");
+			return Err(ElectionError::DataProvider("Snapshot too big for submission."))
+		}
+
+		Ok((targets, voters, desired_targets))
+	}
+
+	/// Creates the snapshot. Writes new data to:
+	///
+	/// 1. [`SnapshotMetadata`]
+	/// 2. [`RoundSnapshot`]
+	/// 3. [`DesiredTargets`]
+	///
+	/// Returns `Ok(())` if operation is okay.
+	///
+	/// This is a *self-weighing* function, it will register its own extra weight as
+	/// [`DispatchClass::Mandatory`] with the system pallet.
+	pub fn create_snapshot() -> Result<(), ElectionError> {
+		// this is self-weighing itself..
+		let (targets, voters, desired_targets) = Self::create_snapshot_external()?;
+
+		// ..therefore we only measure the weight of this and add it.
+		Self::create_snapshot_internal(targets, voters, desired_targets);
+		Self::register_weight(T::WeightInfo::create_snapshot_internal());
+		Ok(())
+	}
+
+	/// Register some amount of weight directly with the system pallet.
+	///
+	/// This is always mandatory weight.
+	fn register_weight(weight: Weight) {
+		<frame_system::Pallet<T>>::register_extra_weight_unchecked(
+			weight,
+			DispatchClass::Mandatory,
+		);
 	}

 	/// Kill everything created by [`Pallet::create_snapshot`].
@@ -1467,7 +1472,7 @@ impl<T: Config> Pallet<T> {
 	}

 	/// On-chain fallback of election.
-	fn onchain_fallback() -> Result<(Supports<T::AccountId>, Weight), ElectionError> {
+	fn onchain_fallback() -> Result<Supports<T::AccountId>, ElectionError> {
 		<onchain::OnChainSequentialPhragmen<OnChainConfig<T>> as ElectionProvider<
 			T::AccountId,
 			T::BlockNumber,
@@ -1475,7 +1480,7 @@ impl<T: Config> Pallet<T> {
 		.map_err(Into::into)
 	}

-	fn do_elect() -> Result<(Supports<T::AccountId>, Weight), ElectionError> {
+	fn do_elect() -> Result<Supports<T::AccountId>, ElectionError> {
 		// We have to unconditionally try finalizing the signed phase here. There are only two
 		// possibilities:
 		//
@@ -1483,41 +1488,27 @@ impl<T: Config> Pallet<T> {
 		//   system
 		// - signed phase was complete or not started, in which case finalization is idempotent and
 		//   inexpensive (1 read of an empty vector).
-		let (_, signed_finalize_weight) = Self::finalize_signed_phase();
+		let _ = Self::finalize_signed_phase();
 		<QueuedSolution<T>>::take()
 			.map_or_else(
 				|| match T::Fallback::get() {
 					FallbackStrategy::OnChain => Self::onchain_fallback()
-						.map(|(s, w)| (s, w, ElectionCompute::OnChain))
+						.map(|s| {
+							// onchain election incurs maximum block weight
+							Self::register_weight(T::BlockWeights::get().max_block);
+							(s, ElectionCompute::OnChain)
+						})
 						.map_err(Into::into),
 					FallbackStrategy::Nothing => Err(ElectionError::NoFallbackConfigured),
 				},
-				|ReadySolution { supports, compute, .. }| {
-					// defensive-only: snapshot must always exist by this point.
-					let metadata = Self::snapshot_metadata().unwrap_or_default();
-					let desired = supports.len() as u32;
-					let active_voters = supports
-						.iter()
-						.map(|(_, x)| x)
-						.fold(Zero::zero(), |acc, next| acc + next.voters.len() as u32);
-					Ok((
-						supports,
-						T::WeightInfo::elect_queued(
-							metadata.voters,
-							metadata.targets,
-							active_voters,
-							desired,
-						),
-						compute,
-					))
-				},
+				|ReadySolution { supports, compute, .. }| Ok((supports, compute)),
 			)
-			.map(|(supports, weight, compute)| {
+			.map(|(supports, compute)| {
 				Self::deposit_event(Event::ElectionFinalized(Some(compute)));
 				if Self::round() != 1 {
 					log!(info, "Finalized election round with compute {:?}.", compute);
 				}
-				(supports, weight.saturating_add(signed_finalize_weight))
+				supports
 			})
 			.map_err(|err| {
 				Self::deposit_event(Event::ElectionFinalized(None));
@@ -1527,18 +1518,29 @@ impl<T: Config> Pallet<T> {
 				err
 			})
 	}
+
+	/// record the weight of the given `supports`.
+	fn weigh_supports(supports: &Supports<T::AccountId>) {
+		let active_voters = supports
+			.iter()
+			.map(|(_, x)| x)
+			.fold(Zero::zero(), |acc, next| acc + next.voters.len() as u32);
+		let desired_targets = supports.len() as u32;
+		Self::register_weight(T::WeightInfo::elect_queued(active_voters, desired_targets));
+	}
 }

 impl<T: Config> ElectionProvider<T::AccountId, T::BlockNumber> for Pallet<T> {
 	type Error = ElectionError;
 	type DataProvider = T::DataProvider;

-	fn elect() -> Result<(Supports<T::AccountId>, Weight), Self::Error> {
+	fn elect() -> Result<Supports<T::AccountId>, Self::Error> {
 		match Self::do_elect() {
-			Ok((supports, weight)) => {
-				// All went okay, put sign to be Off, clean snapshot, etc.
+			Ok(supports) => {
+				// All went okay, record the weight, put sign to be Off, clean snapshot, etc.
+				Self::weigh_supports(&supports);
 				Self::rotate_round();
-				Ok((supports, weight))
+				Ok(supports)
 			},
 			Err(why) => {
 				log!(error, "Entering emergency mode: {:?}", why);
@@ -1796,7 +1798,7 @@ mod tests {
 			assert_eq!(MultiPhase::current_phase(), Phase::Unsigned((true, 25)));
 			assert!(MultiPhase::snapshot().is_some());

-			MultiPhase::elect().unwrap();
+			assert_ok!(MultiPhase::elect());

 			assert!(MultiPhase::current_phase().is_off());
 			assert!(MultiPhase::snapshot().is_none());
@@ -1829,7 +1831,7 @@ mod tests {
 			roll_to(30);
 			assert!(MultiPhase::current_phase().is_unsigned_open_at(20));

-			MultiPhase::elect().unwrap();
+			assert_ok!(MultiPhase::elect());

 			assert!(MultiPhase::current_phase().is_off());
 			assert!(MultiPhase::snapshot().is_none());
@@ -1896,7 +1898,7 @@ mod tests {

 			// An unexpected call to elect.
 			roll_to(20);
-			MultiPhase::elect().unwrap();
+			assert_ok!(MultiPhase::elect());

 			// We surely can't have any feasible solutions. This will cause an on-chain election.
 			assert_eq!(
@@ -1941,7 +1943,7 @@ mod tests {

 			// an unexpected call to elect.
 			roll_to(20);
-			assert!(MultiPhase::elect().is_ok());
+			assert_ok!(MultiPhase::elect());

 			// all storage items must be cleared.
 			assert_eq!(MultiPhase::round(), 2);
@@ -1963,7 +1965,7 @@ mod tests {
 			assert_eq!(MultiPhase::current_phase(), Phase::Unsigned((true, 25)));

 			// Zilch solutions thus far.
-			let (supports, _) = MultiPhase::elect().unwrap();
+			let supports = MultiPhase::elect().unwrap();

 			assert_eq!(
 				supports,
@@ -2001,7 +2003,7 @@ mod tests {

 			// On-chain backup works though.
 			roll_to(29);
-			let (supports, _) = MultiPhase::elect().unwrap();
+			let supports = MultiPhase::elect().unwrap();
 			assert!(supports.len() > 0);
 		})
 	}
@@ -283,6 +283,13 @@ impl multi_phase::weights::WeightInfo for DualMockWeightInfo {
 			<() as multi_phase::weights::WeightInfo>::on_initialize_nothing()
 		}
 	}
+	fn create_snapshot_internal() -> Weight {
+		if MockWeightInfo::get() {
+			Zero::zero()
+		} else {
+			<() as multi_phase::weights::WeightInfo>::create_snapshot_internal()
+		}
+	}
 	fn on_initialize_open_signed() -> Weight {
 		if MockWeightInfo::get() {
 			Zero::zero()
@@ -290,18 +297,18 @@ impl multi_phase::weights::WeightInfo for DualMockWeightInfo {
 			<() as multi_phase::weights::WeightInfo>::on_initialize_open_signed()
 		}
 	}
-	fn on_initialize_open_unsigned_with_snapshot() -> Weight {
+	fn on_initialize_open_unsigned() -> Weight {
 		if MockWeightInfo::get() {
 			Zero::zero()
 		} else {
-			<() as multi_phase::weights::WeightInfo>::on_initialize_open_unsigned_with_snapshot()
+			<() as multi_phase::weights::WeightInfo>::on_initialize_open_unsigned()
 		}
 	}
-	fn on_initialize_open_unsigned_without_snapshot() -> Weight {
+	fn elect_queued(a: u32, d: u32) -> Weight {
 		if MockWeightInfo::get() {
 			Zero::zero()
 		} else {
-			<() as multi_phase::weights::WeightInfo>::on_initialize_open_unsigned_without_snapshot()
+			<() as multi_phase::weights::WeightInfo>::elect_queued(a, d)
 		}
 	}
 	fn finalize_signed_phase_accept_solution() -> Weight {
@@ -325,13 +332,6 @@ impl multi_phase::weights::WeightInfo for DualMockWeightInfo {
 			<() as multi_phase::weights::WeightInfo>::submit(c)
 		}
 	}
-	fn elect_queued(v: u32, t: u32, a: u32, d: u32) -> Weight {
-		if MockWeightInfo::get() {
-			Zero::zero()
-		} else {
-			<() as multi_phase::weights::WeightInfo>::elect_queued(v, t, a, d)
-		}
-	}
 	fn submit_unsigned(v: u32, t: u32, a: u32, d: u32) -> Weight {
 		if MockWeightInfo::get() {
 			// 10 base
@@ -397,35 +397,36 @@ pub struct ExtBuilder {}
 pub struct StakingMock;
 impl ElectionDataProvider<AccountId, u64> for StakingMock {
 	const MAXIMUM_VOTES_PER_VOTER: u32 = <TestNposSolution as NposSolution>::LIMIT as u32;
-	fn targets(maybe_max_len: Option<usize>) -> data_provider::Result<(Vec<AccountId>, Weight)> {
+	fn targets(maybe_max_len: Option<usize>) -> data_provider::Result<Vec<AccountId>> {
 		let targets = Targets::get();

 		if maybe_max_len.map_or(false, |max_len| targets.len() > max_len) {
 			return Err("Targets too big")
 		}

-		Ok((targets, 0))
+		Ok(targets)
 	}

 	fn voters(
 		maybe_max_len: Option<usize>,
-	) -> data_provider::Result<(Vec<(AccountId, VoteWeight, Vec<AccountId>)>, Weight)> {
+	) -> data_provider::Result<Vec<(AccountId, VoteWeight, Vec<AccountId>)>> {
 		let voters = Voters::get();
 		if maybe_max_len.map_or(false, |max_len| voters.len() > max_len) {
 			return Err("Voters too big")
 		}

-		Ok((voters, 0))
+		Ok(voters)
 	}
-	fn desired_targets() -> data_provider::Result<(u32, Weight)> {
-		Ok((DesiredTargets::get(), 0))
+
+	fn desired_targets() -> data_provider::Result<u32> {
+		Ok(DesiredTargets::get())
 	}

 	fn next_election_prediction(now: u64) -> u64 {
 		now + EpochLength::get() - now % EpochLength::get()
 	}

-	#[cfg(any(feature = "runtime-benchmarks", test))]
+	#[cfg(feature = "runtime-benchmarks")]
 	fn put_snapshot(
 		voters: Vec<(AccountId, VoteWeight, Vec<AccountId>)>,
 		targets: Vec<AccountId>,
@@ -435,20 +436,20 @@ impl ElectionDataProvider<AccountId, u64> for StakingMock {
 		Voters::set(voters);
 	}

-	#[cfg(any(feature = "runtime-benchmarks", test))]
+	#[cfg(feature = "runtime-benchmarks")]
 	fn clear() {
 		Targets::set(vec![]);
 		Voters::set(vec![]);
 	}

-	#[cfg(any(feature = "runtime-benchmarks", test))]
+	#[cfg(feature = "runtime-benchmarks")]
 	fn add_voter(voter: AccountId, weight: VoteWeight, targets: Vec<AccountId>) {
 		let mut current = Voters::get();
 		current.push((voter, weight, targets));
 		Voters::set(current);
 	}

-	#[cfg(any(feature = "runtime-benchmarks", test))]
+	#[cfg(feature = "runtime-benchmarks")]
 	fn add_target(target: AccountId) {
 		let mut current = Targets::get();
 		current.push(target);
@@ -343,7 +343,17 @@ impl<T: Config> Pallet<T> {
 	///
 	/// This drains the [`SignedSubmissions`], potentially storing the best valid one in
 	/// [`QueuedSolution`].
-	pub fn finalize_signed_phase() -> (bool, Weight) {
+	///
+	/// This is a *self-weighing* function, it automatically registers its weight internally when
+	/// being called.
+	pub fn finalize_signed_phase() -> bool {
+		let (weight, found_solution) = Self::finalize_signed_phase_internal();
+		Self::register_weight(weight);
+		found_solution
+	}
+
+	/// The guts of [`finalized_signed_phase`], that does everything except registering its weight.
+	pub(crate) fn finalize_signed_phase_internal() -> (Weight, bool) {
 		let mut all_submissions = Self::signed_submissions();
 		let mut found_solution = false;
 		let mut weight = T::DbWeight::get().reads(1);
@@ -402,9 +412,9 @@ impl<T: Config> Pallet<T> {
 			found_solution,
 			discarded
 		);
-		(found_solution, weight)
-	}

+		(weight, found_solution)
+	}
 	/// Helper function for the case where a solution is accepted in the signed phase.
 	///
 	/// Extracted to facilitate with weight calculation.
@@ -568,7 +578,7 @@ mod tests {
 			assert_ok!(submit_with_witness(Origin::signed(99), solution));
 			assert_eq!(balances(&99), (95, 5));

-			assert!(MultiPhase::finalize_signed_phase().0);
+			assert!(MultiPhase::finalize_signed_phase());
 			assert_eq!(balances(&99), (100 + 7 + 8, 0));
 		})
 	}
@@ -589,7 +599,7 @@ mod tests {
 			assert_eq!(balances(&99), (95, 5));

 			// no good solution was stored.
-			assert!(!MultiPhase::finalize_signed_phase().0);
+			assert!(!MultiPhase::finalize_signed_phase());
 			// and the bond is gone.
 			assert_eq!(balances(&99), (95, 0));
 		})
@@ -615,7 +625,7 @@ mod tests {
 			assert_eq!(balances(&999), (95, 5));

 			// _some_ good solution was stored.
-			assert!(MultiPhase::finalize_signed_phase().0);
+			assert!(MultiPhase::finalize_signed_phase());

 			// 99 is rewarded.
 			assert_eq!(balances(&99), (100 + 7 + 8, 0));
@@ -806,7 +816,7 @@ mod tests {
 			);

 			// _some_ good solution was stored.
-			assert!(MultiPhase::finalize_signed_phase().0);
+			assert!(MultiPhase::finalize_signed_phase());

 			// 99 is rewarded.
 			assert_eq!(balances(&99), (100 + 7 + 8, 0));
@@ -906,7 +916,7 @@ mod tests {
 				roll_to(block_number);

 				assert_eq!(SignedSubmissions::<Runtime>::decode_len().unwrap_or_default(), 0);
-				assert_storage_noop!(MultiPhase::finalize_signed_phase());
+				assert_storage_noop!(MultiPhase::finalize_signed_phase_internal());
 			}
 		})
 	}
@@ -923,7 +933,7 @@ mod tests {
 			assert_ok!(submit_with_witness(Origin::signed(99), solution.clone()));

 			// _some_ good solution was stored.
-			assert!(MultiPhase::finalize_signed_phase().0);
+			assert!(MultiPhase::finalize_signed_phase());

 			// calling it again doesn't change anything
 			assert_storage_noop!(MultiPhase::finalize_signed_phase());
@@ -662,19 +662,19 @@ mod max_weight {

 	struct TestWeight;
 	impl crate::weights::WeightInfo for TestWeight {
+		fn elect_queued(a: u32, d: u32) -> Weight {
+			unreachable!()
+		}
+		fn create_snapshot_internal() -> Weight {
+			unreachable!()
+		}
 		fn on_initialize_nothing() -> Weight {
 			unreachable!()
 		}
 		fn on_initialize_open_signed() -> Weight {
 			unreachable!()
 		}
-		fn on_initialize_open_unsigned_with_snapshot() -> Weight {
-			unreachable!()
-		}
-		fn elect_queued(_v: u32, _t: u32, _a: u32, _d: u32) -> Weight {
-			0
-		}
-		fn on_initialize_open_unsigned_without_snapshot() -> Weight {
+		fn on_initialize_open_unsigned() -> Weight {
 			unreachable!()
 		}
 		fn finalize_signed_phase_accept_solution() -> Weight {
@@ -18,7 +18,7 @@
 //! Autogenerated weights for pallet_election_provider_multi_phase
 //!
 //! THIS FILE WAS AUTO-GENERATED USING THE SUBSTRATE BENCHMARK CLI VERSION 4.0.0-dev
-//! DATE: 2021-08-07, STEPS: `50`, REPEAT: 20, LOW RANGE: `[]`, HIGH RANGE: `[]`
+//! DATE: 2021-08-18, STEPS: `50`, REPEAT: 20, LOW RANGE: `[]`, HIGH RANGE: `[]`
 //! EXECUTION: Some(Wasm), WASM-EXECUTION: Compiled, CHAIN: Some("dev"), DB CACHE: 128

 // Executed Command:
@@ -47,11 +47,11 @@ use sp_std::marker::PhantomData;
 pub trait WeightInfo {
 	fn on_initialize_nothing() -> Weight;
 	fn on_initialize_open_signed() -> Weight;
-	fn on_initialize_open_unsigned_with_snapshot() -> Weight;
-	fn on_initialize_open_unsigned_without_snapshot() -> Weight;
+	fn on_initialize_open_unsigned() -> Weight;
 	fn finalize_signed_phase_accept_solution() -> Weight;
 	fn finalize_signed_phase_reject_solution() -> Weight;
-	fn elect_queued(v: u32, t: u32, a: u32, d: u32, ) -> Weight;
+	fn create_snapshot_internal() -> Weight;
+	fn elect_queued(a: u32, d: u32, ) -> Weight;
 	fn submit(c: u32, ) -> Weight;
 	fn submit_unsigned(v: u32, t: u32, a: u32, d: u32, ) -> Weight;
 	fn feasibility_check(v: u32, t: u32, a: u32, d: u32, ) -> Weight;
@@ -69,65 +69,43 @@ impl<T: frame_system::Config> WeightInfo for SubstrateWeight<T> {
 	// Storage: Staking ForceEra (r:1 w:0)
 	// Storage: ElectionProviderMultiPhase CurrentPhase (r:1 w:0)
 	fn on_initialize_nothing() -> Weight {
-		(22_589_000 as Weight)
+		(23_878_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(8 as Weight))
 	}
-	// Storage: Staking CounterForValidators (r:1 w:0)
-	// Storage: Staking Validators (r:2 w:0)
-	// Storage: Staking CounterForNominators (r:1 w:0)
-	// Storage: Staking SlashingSpans (r:1 w:0)
-	// Storage: Staking Bonded (r:1 w:0)
-	// Storage: Staking Ledger (r:1 w:0)
-	// Storage: Staking Nominators (r:1 w:0)
-	// Storage: Staking ValidatorCount (r:1 w:0)
 	// Storage: ElectionProviderMultiPhase Round (r:1 w:0)
-	// Storage: ElectionProviderMultiPhase SnapshotMetadata (r:0 w:1)
-	// Storage: ElectionProviderMultiPhase DesiredTargets (r:0 w:1)
-	// Storage: ElectionProviderMultiPhase Snapshot (r:0 w:1)
 	// Storage: ElectionProviderMultiPhase CurrentPhase (r:0 w:1)
 	fn on_initialize_open_signed() -> Weight {
-		(107_551_000 as Weight)
-			.saturating_add(T::DbWeight::get().reads(10 as Weight))
-			.saturating_add(T::DbWeight::get().writes(4 as Weight))
-	}
-	// Storage: Staking CounterForValidators (r:1 w:0)
-	// Storage: Staking Validators (r:2 w:0)
-	// Storage: Staking CounterForNominators (r:1 w:0)
-	// Storage: Staking SlashingSpans (r:1 w:0)
-	// Storage: Staking Bonded (r:1 w:0)
-	// Storage: Staking Ledger (r:1 w:0)
-	// Storage: Staking Nominators (r:1 w:0)
-	// Storage: Staking ValidatorCount (r:1 w:0)
-	// Storage: ElectionProviderMultiPhase Round (r:1 w:0)
-	// Storage: ElectionProviderMultiPhase SnapshotMetadata (r:0 w:1)
-	// Storage: ElectionProviderMultiPhase DesiredTargets (r:0 w:1)
-	// Storage: ElectionProviderMultiPhase Snapshot (r:0 w:1)
-	// Storage: ElectionProviderMultiPhase CurrentPhase (r:0 w:1)
-	fn on_initialize_open_unsigned_with_snapshot() -> Weight {
-		(96_899_000 as Weight)
-			.saturating_add(T::DbWeight::get().reads(10 as Weight))
-			.saturating_add(T::DbWeight::get().writes(4 as Weight))
+		(34_547_000 as Weight)
+			.saturating_add(T::DbWeight::get().reads(1 as Weight))
+			.saturating_add(T::DbWeight::get().writes(1 as Weight))
 	}
 	// Storage: ElectionProviderMultiPhase Round (r:1 w:0)
 	// Storage: ElectionProviderMultiPhase CurrentPhase (r:0 w:1)
-	fn on_initialize_open_unsigned_without_snapshot() -> Weight {
-		(18_549_000 as Weight)
+	fn on_initialize_open_unsigned() -> Weight {
+		(33_568_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(1 as Weight))
 			.saturating_add(T::DbWeight::get().writes(1 as Weight))
 	}
 	// Storage: System Account (r:1 w:1)
 	// Storage: ElectionProviderMultiPhase QueuedSolution (r:0 w:1)
 	fn finalize_signed_phase_accept_solution() -> Weight {
-		(48_349_000 as Weight)
+		(50_596_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(1 as Weight))
 			.saturating_add(T::DbWeight::get().writes(2 as Weight))
 	}
 	// Storage: System Account (r:1 w:1)
 	fn finalize_signed_phase_reject_solution() -> Weight {
-		(32_014_000 as Weight)
+		(33_389_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(1 as Weight))
 			.saturating_add(T::DbWeight::get().writes(1 as Weight))
 	}
+	// Storage: ElectionProviderMultiPhase SnapshotMetadata (r:0 w:1)
+	// Storage: ElectionProviderMultiPhase DesiredTargets (r:0 w:1)
+	// Storage: ElectionProviderMultiPhase Snapshot (r:0 w:1)
+	fn create_snapshot_internal() -> Weight {
+		(8_835_233_000 as Weight)
+			.saturating_add(T::DbWeight::get().writes(3 as Weight))
+	}
 	// Storage: ElectionProviderMultiPhase SignedSubmissionIndices (r:1 w:1)
 	// Storage: ElectionProviderMultiPhase SignedSubmissionNextIndex (r:1 w:1)
 	// Storage: ElectionProviderMultiPhase SnapshotMetadata (r:1 w:1)
@@ -137,16 +115,12 @@ impl<T: frame_system::Config> WeightInfo for SubstrateWeight<T> {
 	// Storage: ElectionProviderMultiPhase DesiredTargets (r:0 w:1)
 	// Storage: ElectionProviderMultiPhase Snapshot (r:0 w:1)
 	// Storage: ElectionProviderMultiPhase CurrentPhase (r:0 w:1)
-	fn elect_queued(v: u32, t: u32, a: u32, d: u32, ) -> Weight {
-		(0 as Weight)
+	fn elect_queued(a: u32, d: u32, ) -> Weight {
+		(82_395_000 as Weight)
 			// Standard Error: 1_000
-			.saturating_add((43_000 as Weight).saturating_mul(v as Weight))
-			// Standard Error: 6_000
-			.saturating_add((189_000 as Weight).saturating_mul(t as Weight))
-			// Standard Error: 2_000
-			.saturating_add((1_667_000 as Weight).saturating_mul(a as Weight))
-			// Standard Error: 15_000
-			.saturating_add((129_000 as Weight).saturating_mul(d as Weight))
+			.saturating_add((1_769_000 as Weight).saturating_mul(a as Weight))
+			// Standard Error: 13_000
+			.saturating_add((320_000 as Weight).saturating_mul(d as Weight))
 			.saturating_add(T::DbWeight::get().reads(6 as Weight))
 			.saturating_add(T::DbWeight::get().writes(8 as Weight))
 	}
@@ -157,9 +131,9 @@ impl<T: frame_system::Config> WeightInfo for SubstrateWeight<T> {
 	// Storage: ElectionProviderMultiPhase SignedSubmissionNextIndex (r:1 w:1)
 	// Storage: ElectionProviderMultiPhase SignedSubmissionsMap (r:0 w:1)
 	fn submit(c: u32, ) -> Weight {
-		(72_163_000 as Weight)
-			// Standard Error: 30_000
-			.saturating_add((254_000 as Weight).saturating_mul(c as Weight))
+		(77_368_000 as Weight)
+			// Standard Error: 9_000
+			.saturating_add((369_000 as Weight).saturating_mul(c as Weight))
 			.saturating_add(T::DbWeight::get().reads(5 as Weight))
 			.saturating_add(T::DbWeight::get().writes(3 as Weight))
 	}
@@ -173,13 +147,13 @@ impl<T: frame_system::Config> WeightInfo for SubstrateWeight<T> {
 	fn submit_unsigned(v: u32, t: u32, a: u32, d: u32, ) -> Weight {
 		(0 as Weight)
 			// Standard Error: 4_000
-			.saturating_add((3_512_000 as Weight).saturating_mul(v as Weight))
+			.saturating_add((3_553_000 as Weight).saturating_mul(v as Weight))
 			// Standard Error: 23_000
-			.saturating_add((49_000 as Weight).saturating_mul(t as Weight))
+			.saturating_add((35_000 as Weight).saturating_mul(t as Weight))
 			// Standard Error: 7_000
-			.saturating_add((10_295_000 as Weight).saturating_mul(a as Weight))
+			.saturating_add((10_600_000 as Weight).saturating_mul(a as Weight))
 			// Standard Error: 59_000
-			.saturating_add((6_008_000 as Weight).saturating_mul(d as Weight))
+			.saturating_add((6_128_000 as Weight).saturating_mul(d as Weight))
 			.saturating_add(T::DbWeight::get().reads(7 as Weight))
 			.saturating_add(T::DbWeight::get().writes(1 as Weight))
 	}
@@ -187,16 +161,14 @@ impl<T: frame_system::Config> WeightInfo for SubstrateWeight<T> {
 	// Storage: ElectionProviderMultiPhase DesiredTargets (r:1 w:0)
 	// Storage: ElectionProviderMultiPhase MinimumUntrustedScore (r:1 w:0)
 	// Storage: ElectionProviderMultiPhase Snapshot (r:1 w:0)
-	fn feasibility_check(v: u32, t: u32, a: u32, d: u32, ) -> Weight {
+	fn feasibility_check(v: u32, _t: u32, a: u32, d: u32, ) -> Weight {
 		(0 as Weight)
-			// Standard Error: 8_000
-			.saturating_add((3_508_000 as Weight).saturating_mul(v as Weight))
-			// Standard Error: 40_000
-			.saturating_add((302_000 as Weight).saturating_mul(t as Weight))
-			// Standard Error: 13_000
-			.saturating_add((8_658_000 as Weight).saturating_mul(a as Weight))
-			// Standard Error: 100_000
-			.saturating_add((4_816_000 as Weight).saturating_mul(d as Weight))
+			// Standard Error: 3_000
+			.saturating_add((3_478_000 as Weight).saturating_mul(v as Weight))
+			// Standard Error: 6_000
+			.saturating_add((8_930_000 as Weight).saturating_mul(a as Weight))
+			// Standard Error: 47_000
+			.saturating_add((5_199_000 as Weight).saturating_mul(d as Weight))
 			.saturating_add(T::DbWeight::get().reads(4 as Weight))
 	}
 }
@@ -212,65 +184,43 @@ impl WeightInfo for () {
 	// Storage: Staking ForceEra (r:1 w:0)
 	// Storage: ElectionProviderMultiPhase CurrentPhase (r:1 w:0)
 	fn on_initialize_nothing() -> Weight {
-		(22_589_000 as Weight)
+		(23_878_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(8 as Weight))
 	}
-	// Storage: Staking CounterForValidators (r:1 w:0)
-	// Storage: Staking Validators (r:2 w:0)
-	// Storage: Staking CounterForNominators (r:1 w:0)
-	// Storage: Staking SlashingSpans (r:1 w:0)
-	// Storage: Staking Bonded (r:1 w:0)
-	// Storage: Staking Ledger (r:1 w:0)
-	// Storage: Staking Nominators (r:1 w:0)
-	// Storage: Staking ValidatorCount (r:1 w:0)
 	// Storage: ElectionProviderMultiPhase Round (r:1 w:0)
-	// Storage: ElectionProviderMultiPhase SnapshotMetadata (r:0 w:1)
-	// Storage: ElectionProviderMultiPhase DesiredTargets (r:0 w:1)
-	// Storage: ElectionProviderMultiPhase Snapshot (r:0 w:1)
 	// Storage: ElectionProviderMultiPhase CurrentPhase (r:0 w:1)
 	fn on_initialize_open_signed() -> Weight {
-		(107_551_000 as Weight)
-			.saturating_add(RocksDbWeight::get().reads(10 as Weight))
-			.saturating_add(RocksDbWeight::get().writes(4 as Weight))
-	}
-	// Storage: Staking CounterForValidators (r:1 w:0)
-	// Storage: Staking Validators (r:2 w:0)
-	// Storage: Staking CounterForNominators (r:1 w:0)
-	// Storage: Staking SlashingSpans (r:1 w:0)
-	// Storage: Staking Bonded (r:1 w:0)
-	// Storage: Staking Ledger (r:1 w:0)
-	// Storage: Staking Nominators (r:1 w:0)
-	// Storage: Staking ValidatorCount (r:1 w:0)
-	// Storage: ElectionProviderMultiPhase Round (r:1 w:0)
-	// Storage: ElectionProviderMultiPhase SnapshotMetadata (r:0 w:1)
-	// Storage: ElectionProviderMultiPhase DesiredTargets (r:0 w:1)
-	// Storage: ElectionProviderMultiPhase Snapshot (r:0 w:1)
-	// Storage: ElectionProviderMultiPhase CurrentPhase (r:0 w:1)
-	fn on_initialize_open_unsigned_with_snapshot() -> Weight {
-		(96_899_000 as Weight)
-			.saturating_add(RocksDbWeight::get().reads(10 as Weight))
-			.saturating_add(RocksDbWeight::get().writes(4 as Weight))
+		(34_547_000 as Weight)
+			.saturating_add(RocksDbWeight::get().reads(1 as Weight))
+			.saturating_add(RocksDbWeight::get().writes(1 as Weight))
 	}
 	// Storage: ElectionProviderMultiPhase Round (r:1 w:0)
 	// Storage: ElectionProviderMultiPhase CurrentPhase (r:0 w:1)
-	fn on_initialize_open_unsigned_without_snapshot() -> Weight {
-		(18_549_000 as Weight)
+	fn on_initialize_open_unsigned() -> Weight {
+		(33_568_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(1 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(1 as Weight))
 	}
 	// Storage: System Account (r:1 w:1)
 	// Storage: ElectionProviderMultiPhase QueuedSolution (r:0 w:1)
 	fn finalize_signed_phase_accept_solution() -> Weight {
-		(48_349_000 as Weight)
+		(50_596_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(1 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(2 as Weight))
 	}
 	// Storage: System Account (r:1 w:1)
 	fn finalize_signed_phase_reject_solution() -> Weight {
-		(32_014_000 as Weight)
+		(33_389_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(1 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(1 as Weight))
 	}
+	// Storage: ElectionProviderMultiPhase SnapshotMetadata (r:0 w:1)
+	// Storage: ElectionProviderMultiPhase DesiredTargets (r:0 w:1)
+	// Storage: ElectionProviderMultiPhase Snapshot (r:0 w:1)
+	fn create_snapshot_internal() -> Weight {
+		(8_835_233_000 as Weight)
+			.saturating_add(RocksDbWeight::get().writes(3 as Weight))
+	}
 	// Storage: ElectionProviderMultiPhase SignedSubmissionIndices (r:1 w:1)
 	// Storage: ElectionProviderMultiPhase SignedSubmissionNextIndex (r:1 w:1)
 	// Storage: ElectionProviderMultiPhase SnapshotMetadata (r:1 w:1)
@@ -280,16 +230,12 @@ impl WeightInfo for () {
 	// Storage: ElectionProviderMultiPhase DesiredTargets (r:0 w:1)
 	// Storage: ElectionProviderMultiPhase Snapshot (r:0 w:1)
 	// Storage: ElectionProviderMultiPhase CurrentPhase (r:0 w:1)
-	fn elect_queued(v: u32, t: u32, a: u32, d: u32, ) -> Weight {
-		(0 as Weight)
+	fn elect_queued(a: u32, d: u32, ) -> Weight {
+		(82_395_000 as Weight)
 			// Standard Error: 1_000
-			.saturating_add((43_000 as Weight).saturating_mul(v as Weight))
-			// Standard Error: 6_000
-			.saturating_add((189_000 as Weight).saturating_mul(t as Weight))
-			// Standard Error: 2_000
-			.saturating_add((1_667_000 as Weight).saturating_mul(a as Weight))
-			// Standard Error: 15_000
-			.saturating_add((129_000 as Weight).saturating_mul(d as Weight))
+			.saturating_add((1_769_000 as Weight).saturating_mul(a as Weight))
+			// Standard Error: 13_000
+			.saturating_add((320_000 as Weight).saturating_mul(d as Weight))
 			.saturating_add(RocksDbWeight::get().reads(6 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(8 as Weight))
 	}
@@ -300,9 +246,9 @@ impl WeightInfo for () {
 	// Storage: ElectionProviderMultiPhase SignedSubmissionNextIndex (r:1 w:1)
 	// Storage: ElectionProviderMultiPhase SignedSubmissionsMap (r:0 w:1)
 	fn submit(c: u32, ) -> Weight {
-		(72_163_000 as Weight)
-			// Standard Error: 30_000
-			.saturating_add((254_000 as Weight).saturating_mul(c as Weight))
+		(77_368_000 as Weight)
+			// Standard Error: 9_000
+			.saturating_add((369_000 as Weight).saturating_mul(c as Weight))
 			.saturating_add(RocksDbWeight::get().reads(5 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(3 as Weight))
 	}
@@ -316,13 +262,13 @@ impl WeightInfo for () {
 	fn submit_unsigned(v: u32, t: u32, a: u32, d: u32, ) -> Weight {
 		(0 as Weight)
 			// Standard Error: 4_000
-			.saturating_add((3_512_000 as Weight).saturating_mul(v as Weight))
+			.saturating_add((3_553_000 as Weight).saturating_mul(v as Weight))
 			// Standard Error: 23_000
-			.saturating_add((49_000 as Weight).saturating_mul(t as Weight))
+			.saturating_add((35_000 as Weight).saturating_mul(t as Weight))
 			// Standard Error: 7_000
-			.saturating_add((10_295_000 as Weight).saturating_mul(a as Weight))
+			.saturating_add((10_600_000 as Weight).saturating_mul(a as Weight))
 			// Standard Error: 59_000
-			.saturating_add((6_008_000 as Weight).saturating_mul(d as Weight))
+			.saturating_add((6_128_000 as Weight).saturating_mul(d as Weight))
 			.saturating_add(RocksDbWeight::get().reads(7 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(1 as Weight))
 	}
@@ -330,16 +276,14 @@ impl WeightInfo for () {
 	// Storage: ElectionProviderMultiPhase DesiredTargets (r:1 w:0)
 	// Storage: ElectionProviderMultiPhase MinimumUntrustedScore (r:1 w:0)
 	// Storage: ElectionProviderMultiPhase Snapshot (r:1 w:0)
-	fn feasibility_check(v: u32, t: u32, a: u32, d: u32, ) -> Weight {
+	fn feasibility_check(v: u32, _t: u32, a: u32, d: u32, ) -> Weight {
 		(0 as Weight)
-			// Standard Error: 8_000
-			.saturating_add((3_508_000 as Weight).saturating_mul(v as Weight))
-			// Standard Error: 40_000
-			.saturating_add((302_000 as Weight).saturating_mul(t as Weight))
-			// Standard Error: 13_000
-			.saturating_add((8_658_000 as Weight).saturating_mul(a as Weight))
-			// Standard Error: 100_000
-			.saturating_add((4_816_000 as Weight).saturating_mul(d as Weight))
+			// Standard Error: 3_000
+			.saturating_add((3_478_000 as Weight).saturating_mul(v as Weight))
+			// Standard Error: 6_000
+			.saturating_add((8_930_000 as Weight).saturating_mul(a as Weight))
+			// Standard Error: 47_000
+			.saturating_add((5_199_000 as Weight).saturating_mul(d as Weight))
 			.saturating_add(RocksDbWeight::get().reads(4 as Weight))
 	}
 }