Alter minimum weight to fee ratio

runtime/common/src/lib.rs

@@ -81,11 +81,11 @@ parameter_types! {
 	pub const TargetBlockFullness: Perquintill = Perquintill::from_percent(25);
 	/// The adjustment variable of the runtime. Higher values will cause `TargetBlockFullness` to
 	/// change the fees more rapidly.
-	pub AdjustmentVariable: Multiplier = Multiplier::saturating_from_rational(3, 100_000);
+	pub AdjustmentVariable: Multiplier = Multiplier::saturating_from_rational(75, 1000_000);
 	/// Minimum amount of the multiplier. This value cannot be too low. A test case should ensure
 	/// that combined with `AdjustmentVariable`, we can recover from the minimum.
 	/// See `multiplier_can_grow_from_zero`.
-	pub MinimumMultiplier: Multiplier = Multiplier::saturating_from_rational(1, 1_000_000u128);
+	pub MinimumMultiplier: Multiplier = Multiplier::saturating_from_rational(1, 10u128);
 	/// Maximum length of block. Up to 5MB.
 	pub BlockLength: limits::BlockLength =
 	limits::BlockLength::max_with_normal_ratio(5 * 1024 * 1024, NORMAL_DISPATCH_RATIO);
@@ -244,116 +244,3 @@ macro_rules! prod_or_fast {
 		}
 	};
 }
-
-#[cfg(test)]
-mod multiplier_tests {
-	use super::*;
-	use frame_support::{
-		parameter_types,
-		weights::{DispatchClass, Weight},
-	};
-	use sp_core::H256;
-	use sp_runtime::{
-		testing::Header,
-		traits::{BlakeTwo256, Convert, IdentityLookup, One},
-		Perbill,
-	};
-
-	type UncheckedExtrinsic = frame_system::mocking::MockUncheckedExtrinsic<Runtime>;
-	type Block = frame_system::mocking::MockBlock<Runtime>;
-
-	frame_support::construct_runtime!(
-		pub enum Runtime where
-			Block = Block,
-			NodeBlock = Block,
-			UncheckedExtrinsic = UncheckedExtrinsic,
-		{
-			System: frame_system::{Pallet, Call, Config, Storage, Event<T>}
-		}
-	);
-
-	parameter_types! {
-		pub const BlockHashCount: u64 = 250;
-		pub const AvailableBlockRatio: Perbill = Perbill::one();
-		pub BlockLength: frame_system::limits::BlockLength =
-			frame_system::limits::BlockLength::max(2 * 1024);
-		pub BlockWeights: frame_system::limits::BlockWeights =
-			frame_system::limits::BlockWeights::simple_max(1024);
-	}
-
-	impl frame_system::Config for Runtime {
-		type BaseCallFilter = frame_support::traits::Everything;
-		type BlockWeights = BlockWeights;
-		type BlockLength = ();
-		type DbWeight = ();
-		type Origin = Origin;
-		type Index = u64;
-		type BlockNumber = u64;
-		type Call = Call;
-		type Hash = H256;
-		type Hashing = BlakeTwo256;
-		type AccountId = u64;
-		type Lookup = IdentityLookup<Self::AccountId>;
-		type Header = Header;
-		type Event = Event;
-		type BlockHashCount = BlockHashCount;
-		type Version = ();
-		type PalletInfo = PalletInfo;
-		type AccountData = ();
-		type OnNewAccount = ();
-		type OnKilledAccount = ();
-		type SystemWeightInfo = ();
-		type SS58Prefix = ();
-		type OnSetCode = ();
-		type MaxConsumers = frame_support::traits::ConstU32<16>;
-	}
-
-	fn run_with_system_weight<F>(w: Weight, mut assertions: F)
-	where
-		F: FnMut() -> (),
-	{
-		let mut t: sp_io::TestExternalities = frame_system::GenesisConfig::default()
-			.build_storage::<Runtime>()
-			.unwrap()
-			.into();
-		t.execute_with(|| {
-			System::set_block_consumed_resources(w, 0);
-			assertions()
-		});
-	}
-
-	#[test]
-	fn multiplier_can_grow_from_zero() {
-		let minimum_multiplier = MinimumMultiplier::get();
-		let target = TargetBlockFullness::get() *
-			BlockWeights::get().get(DispatchClass::Normal).max_total.unwrap();
-		// if the min is too small, then this will not change, and we are doomed forever.
-		// the weight is 1/100th bigger than target.
-		run_with_system_weight(target * 101 / 100, || {
-			let next = SlowAdjustingFeeUpdate::<Runtime>::convert(minimum_multiplier);
-			assert!(next > minimum_multiplier, "{:?} !>= {:?}", next, minimum_multiplier);
-		})
-	}
-
-	#[test]
-	#[ignore]
-	fn multiplier_growth_simulator() {
-		// assume the multiplier is initially set to its minimum. We update it with values twice the
-		//target (target is 25%, thus 50%) and we see at which point it reaches 1.
-		let mut multiplier = MinimumMultiplier::get();
-		let block_weight = TargetBlockFullness::get() *
-			BlockWeights::get().get(DispatchClass::Normal).max_total.unwrap() *
-			2;
-		let mut blocks = 0;
-		while multiplier <= Multiplier::one() {
-			run_with_system_weight(block_weight, || {
-				let next = SlowAdjustingFeeUpdate::<Runtime>::convert(multiplier);
-				// ensure that it is growing as well.
-				assert!(next > multiplier, "{:?} !>= {:?}", next, multiplier);
-				multiplier = next;
-			});
-			blocks += 1;
-			println!("block = {} multiplier {:?}", blocks, multiplier);
-		}
-	}
-}

runtime/kusama/src/lib.rs

@@ -2170,3 +2170,128 @@ mod tests_fess {
 		assert_eq_error_rate!(deposit, UNITS * 16 / 100, UNITS / 100);
 	}
 }
+
+#[cfg(test)]
+mod multiplier_tests {
+	use super::*;
+	use frame_support::{dispatch::GetDispatchInfo, traits::OnFinalize};
+	use runtime_common::{MinimumMultiplier, TargetBlockFullness};
+	use separator::Separatable;
+	use sp_runtime::traits::Convert;
+
+	fn run_with_system_weight<F>(w: Weight, mut assertions: F)
+	where
+		F: FnMut() -> (),
+	{
+		let mut t: sp_io::TestExternalities = frame_system::GenesisConfig::default()
+			.build_storage::<Runtime>()
+			.unwrap()
+			.into();
+		t.execute_with(|| {
+			System::set_block_consumed_resources(w, 0);
+			assertions()
+		});
+	}
+
+	#[test]
+	fn multiplier_can_grow_from_zero() {
+		let minimum_multiplier = MinimumMultiplier::get();
+		let target = TargetBlockFullness::get() *
+			BlockWeights::get().get(DispatchClass::Normal).max_total.unwrap();
+		// if the min is too small, then this will not change, and we are doomed forever.
+		// the weight is 1/100th bigger than target.
+		run_with_system_weight(target * 101 / 100, || {
+			let next = SlowAdjustingFeeUpdate::<Runtime>::convert(minimum_multiplier);
+			assert!(next > minimum_multiplier, "{:?} !>= {:?}", next, minimum_multiplier);
+		})
+	}
+
+	#[test]
+	#[ignore]
+	fn multiplier_growth_simulator() {
+		// assume the multiplier is initially set to its minimum. We update it with values twice the
+		//target (target is 25%, thus 50%) and we see at which point it reaches 1.
+		let mut multiplier = MinimumMultiplier::get();
+		let block_weight = BlockWeights::get().get(DispatchClass::Normal).max_total.unwrap();
+		let mut blocks = 0;
+		let mut fees_paid = 0;
+
+		let call = frame_system::Call::<Runtime>::fill_block {
+			ratio: Perbill::from_rational(
+				block_weight,
+				BlockWeights::get().get(DispatchClass::Normal).max_total.unwrap(),
+			),
+		};
+		println!("calling {:?}", call);
+		let info = call.get_dispatch_info();
+		// convert to outer call.
+		let call = Call::System(call);
+		let len = call.using_encoded(|e| e.len()) as u32;
+
+		let mut t: sp_io::TestExternalities = frame_system::GenesisConfig::default()
+			.build_storage::<Runtime>()
+			.unwrap()
+			.into();
+		// set the minimum
+		t.execute_with(|| {
+			pallet_transaction_payment::NextFeeMultiplier::<Runtime>::set(MinimumMultiplier::get());
+		});
+
+		while multiplier <= Multiplier::from_u32(1) {
+			t.execute_with(|| {
+				// imagine this tx was called.
+				let fee = TransactionPayment::compute_fee(len, &info, 0);
+				fees_paid += fee;
+
+				// this will update the multiplier.
+				System::set_block_consumed_resources(block_weight, 0);
+				TransactionPayment::on_finalize(1);
+				let next = TransactionPayment::next_fee_multiplier();
+
+				assert!(next > multiplier, "{:?} !>= {:?}", next, multiplier);
+				multiplier = next;
+
+				println!(
+					"block = {} / multiplier {:?} / fee = {:?} / fess so far {:?}",
+					blocks,
+					multiplier,
+					fee.separated_string(),
+					fees_paid.separated_string()
+				);
+			});
+			blocks += 1;
+		}
+	}
+
+	#[test]
+	#[ignore]
+	fn multiplier_cool_down_simulator() {
+		// assume the multiplier is initially set to its minimum. We update it with values twice the
+		//target (target is 25%, thus 50%) and we see at which point it reaches 1.
+		let mut multiplier = Multiplier::from_u32(2);
+		let mut blocks = 0;
+
+		let mut t: sp_io::TestExternalities = frame_system::GenesisConfig::default()
+			.build_storage::<Runtime>()
+			.unwrap()
+			.into();
+		// set the minimum
+		t.execute_with(|| {
+			pallet_transaction_payment::NextFeeMultiplier::<Runtime>::set(multiplier);
+		});
+
+		while multiplier > Multiplier::from_u32(0) {
+			t.execute_with(|| {
+				// this will update the multiplier.
+				TransactionPayment::on_finalize(1);
+				let next = TransactionPayment::next_fee_multiplier();
+
+				assert!(next < multiplier, "{:?} !>= {:?}", next, multiplier);
+				multiplier = next;
+
+				println!("block = {} / multiplier {:?}", blocks, multiplier);
+			});
+			blocks += 1;
+		}
+	}
+}