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feat: update L2 base fee formula (#951)
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* update `CalcBaseFee`

* update `TestCalcBaseFee`

* update `TestStateProcessorErrors`

* bump version

* update threshold
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0xmountaintop committed Aug 2, 2024
1 parent df3713e commit 8ceb855
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Showing 3 changed files with 13 additions and 12 deletions.
8 changes: 4 additions & 4 deletions consensus/misc/eip1559.go
Original file line number Diff line number Diff line change
Expand Up @@ -25,7 +25,7 @@ import (
)

// Protocol-enforced maximum L2 base fee.
// We would only go above this if L1 base fee hits 2164 Gwei.
// We would only go above this if L1 base fee hits 2931 Gwei.
const MaximumL2BaseFee = 10000000000

// VerifyEip1559Header verifies some header attributes which were changed in EIP-1559,
Expand All @@ -52,11 +52,11 @@ func VerifyEip1559Header(config *params.ChainConfig, parent, header *types.Heade
// CalcBaseFee calculates the basefee of the header.
func CalcBaseFee(config *params.ChainConfig, parent *types.Header, parentL1BaseFee *big.Int) *big.Int {
l2SequencerFee := big.NewInt(1000000) // 0.001 Gwei
provingFee := big.NewInt(47700000) // 0.0477 Gwei
provingFee := big.NewInt(33700000) // 0.0337 Gwei

// L1_base_fee * 0.0046
// L1_base_fee * 0.0034
verificationFee := parentL1BaseFee
verificationFee = new(big.Int).Mul(verificationFee, big.NewInt(46))
verificationFee = new(big.Int).Mul(verificationFee, big.NewInt(34))
verificationFee = new(big.Int).Div(verificationFee, big.NewInt(10000))

baseFee := big.NewInt(0)
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13 changes: 7 additions & 6 deletions consensus/misc/eip1559_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -112,12 +112,13 @@ func TestCalcBaseFee(t *testing.T) {
parentL1BaseFee int64
expectedL2BaseFee int64
}{
{0, 48700000},
{1000000000, 53300000},
{2000000000, 57900000},
{100000000000, 508700000},
{111111111111, 559811111},
{2164000000000, 10000000000}, // cap at max L2 base fee
{0, 34700000},
{1000000000, 38100000},
{2000000000, 41500000},
{100000000000, 374700000},
{111111111111, 412477777},
{2164000000000, 7392300000},
{2931000000000, 10000000000}, // cap at max L2 base fee
}
for i, test := range tests {
if have, want := CalcBaseFee(config(), nil, big.NewInt(test.parentL1BaseFee)), big.NewInt(test.expectedL2BaseFee); have.Cmp(want) != 0 {
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4 changes: 2 additions & 2 deletions core/state_processor_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -360,13 +360,13 @@ func TestStateProcessorErrors(t *testing.T) {
txs: []*types.Transaction{
mkDynamicCreationTx(0, 500000, common.Big0, misc.CalcBaseFee(config, genesis.Header(), parentL1BaseFee), tooBigInitCode[:]),
},
want: "could not apply tx 0 [0x13f95e090076d99bb91e3c61923b4ddfa270940363b282ac2d17ea07dada4aa4]: max initcode size exceeded: code size 49153 limit 49152",
want: "could not apply tx 0 [0x8f780c3573ac61e2d7796f7b447afd0ad753623ed95bc99ef94eb083d9e0d039]: max initcode size exceeded: code size 49153 limit 49152",
},
{ // ErrIntrinsicGas: Not enough gas to cover init code
txs: []*types.Transaction{
mkDynamicCreationTx(0, 54299, common.Big0, misc.CalcBaseFee(config, genesis.Header(), parentL1BaseFee), smallInitCode[:]),
},
want: "could not apply tx 0 [0x74d818187d75665003870481a53dc4bc938fe7ee79d24ebf941ca9042d8ef3ae]: intrinsic gas too low: have 54299, want 54300",
want: "could not apply tx 0 [0xbf812bb88c3f53402b6cf5488ac89360595e524b65582b648d1f4ef197690e89]: intrinsic gas too low: have 54299, want 54300",
},
} {
block := GenerateBadBlock(genesis, ethash.NewFaker(), tt.txs, gspec.Config)
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