core/txpool, eth, miner: pre-filter dynamic fees during pending tx retrieval (#29005)

* core/txpool, eth, miner: pre-filter dynamic fees during pending tx retrieval

* miner: fix typo

* core/txpool: handle init-error in blobpool without panicing

---------

Co-authored-by: Martin Holst Swende <martin@swende.se>

core/txpool/blobpool/blobpool.go

@@ -436,8 +436,10 @@ func (p *BlobPool) Init(gasTip uint64, head *types.Header, reserve txpool.Addres
 // Close closes down the underlying persistent store.
 func (p *BlobPool) Close() error {
 	var errs []error
-	if err := p.limbo.Close(); err != nil {
+	if p.limbo != nil { // Close might be invoked due to error in constructor, before p,limbo is set
-		errs = append(errs, err)
+		if err := p.limbo.Close(); err != nil {
+			errs = append(errs, err)
+		}
 	}
 	if err := p.store.Close(); err != nil {
 		errs = append(errs, err)
@@ -1441,7 +1443,10 @@ func (p *BlobPool) drop() {
 
 // Pending retrieves all currently processable transactions, grouped by origin
 // account and sorted by nonce.
-func (p *BlobPool) Pending(enforceTips bool) map[common.Address][]*txpool.LazyTransaction {
+//
+// The transactions can also be pre-filtered by the dynamic fee components to
+// reduce allocations and load on downstream subsystems.
+func (p *BlobPool) Pending(minTip *uint256.Int, baseFee *uint256.Int, blobFee *uint256.Int) map[common.Address][]*txpool.LazyTransaction {
 	// Track the amount of time waiting to retrieve the list of pending blob txs
 	// from the pool and the amount of time actually spent on assembling the data.
 	// The latter will be pretty much moot, but we've kept it to have symmetric
@@ -1459,6 +1464,25 @@ func (p *BlobPool) Pending(enforceTips bool) map[common.Address][]*txpool.LazyTr
 	for addr, txs := range p.index {
 		var lazies []*txpool.LazyTransaction
 		for _, tx := range txs {
+			// If transaction filtering was requested, discard badly priced ones
+			if minTip != nil && baseFee != nil {
+				if tx.execFeeCap.Lt(baseFee) {
+					break // basefee too low, cannot be included, discard rest of txs from the account
+				}
+				tip := new(uint256.Int).Sub(tx.execFeeCap, baseFee)
+				if tip.Gt(tx.execTipCap) {
+					tip = tx.execTipCap
+				}
+				if tip.Lt(minTip) {
+					break // allowed or remaining tip too low, cannot be included, discard rest of txs from the account
+				}
+			}
+			if blobFee != nil {
+				if tx.blobFeeCap.Lt(blobFee) {
+					break // blobfee too low, cannot be included, discard rest of txs from the account
+				}
+			}
+			// Transaction was accepted according to the filter, append to the pending list
 			lazies = append(lazies, &txpool.LazyTransaction{
 				Pool:      p,
 				Hash:      tx.hash,

core/txpool/legacypool/legacypool.go

@@ -518,24 +518,34 @@ func (pool *LegacyPool) ContentFrom(addr common.Address) ([]*types.Transaction,
 }
 
 // Pending retrieves all currently processable transactions, grouped by origin
-// account and sorted by nonce. The returned transaction set is a copy and can be
+// account and sorted by nonce.
-// freely modified by calling code.
 //
-// The enforceTips parameter can be used to do an extra filtering on the pending
+// The transactions can also be pre-filtered by the dynamic fee components to
-// transactions and only return those whose **effective** tip is large enough in
+// reduce allocations and load on downstream subsystems.
-// the next pending execution environment.
+func (pool *LegacyPool) Pending(minTip *uint256.Int, baseFee *uint256.Int, blobFee *uint256.Int) map[common.Address][]*txpool.LazyTransaction {
-func (pool *LegacyPool) Pending(enforceTips bool) map[common.Address][]*txpool.LazyTransaction {
 	pool.mu.Lock()
 	defer pool.mu.Unlock()
 
+	// Convert the new uint256.Int types to the old big.Int ones used by the legacy pool
+	var (
+		minTipBig  *big.Int
+		baseFeeBig *big.Int
+	)
+	if minTip != nil {
+		minTipBig = minTip.ToBig()
+	}
+	if baseFee != nil {
+		baseFeeBig = baseFee.ToBig()
+	}
+
 	pending := make(map[common.Address][]*txpool.LazyTransaction, len(pool.pending))
 	for addr, list := range pool.pending {
 		txs := list.Flatten()
 
 		// If the miner requests tip enforcement, cap the lists now
-		if enforceTips && !pool.locals.contains(addr) {
+		if minTipBig != nil && !pool.locals.contains(addr) {
 			for i, tx := range txs {
-				if tx.EffectiveGasTipIntCmp(pool.gasTip.Load().ToBig(), pool.priced.urgent.baseFee) < 0 {
+				if tx.EffectiveGasTipIntCmp(minTipBig, baseFeeBig) < 0 {
 					txs = txs[:i]
 					break
 				}

core/txpool/subpool.go

@@ -24,6 +24,7 @@ import (
 	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/event"
+	"github.com/holiman/uint256"
 )
 
 // LazyTransaction contains a small subset of the transaction properties that is
@@ -114,7 +115,10 @@ type SubPool interface {
 
 	// Pending retrieves all currently processable transactions, grouped by origin
 	// account and sorted by nonce.
-	Pending(enforceTips bool) map[common.Address][]*LazyTransaction
+	//
+	// The transactions can also be pre-filtered by the dynamic fee components to
+	// reduce allocations and load on downstream subsystems.
+	Pending(minTip *uint256.Int, baseFee *uint256.Int, blobFee *uint256.Int) map[common.Address][]*LazyTransaction
 
 	// SubscribeTransactions subscribes to new transaction events. The subscriber
 	// can decide whether to receive notifications only for newly seen transactions

core/txpool/txpool.go

@@ -28,6 +28,7 @@ import (
 	"github.com/ethereum/go-ethereum/event"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/metrics"
+	"github.com/holiman/uint256"
 )
 
 // TxStatus is the current status of a transaction as seen by the pool.
@@ -353,10 +354,13 @@ func (p *TxPool) Add(txs []*types.Transaction, local bool, sync bool) []error {
 
 // Pending retrieves all currently processable transactions, grouped by origin
 // account and sorted by nonce.
-func (p *TxPool) Pending(enforceTips bool) map[common.Address][]*LazyTransaction {
+//
+// The transactions can also be pre-filtered by the dynamic fee components to
+// reduce allocations and load on downstream subsystems.
+func (p *TxPool) Pending(minTip *uint256.Int, baseFee *uint256.Int, blobFee *uint256.Int) map[common.Address][]*LazyTransaction {
 	txs := make(map[common.Address][]*LazyTransaction)
 	for _, subpool := range p.subpools {
-		for addr, set := range subpool.Pending(enforceTips) {
+		for addr, set := range subpool.Pending(minTip, baseFee, blobFee) {
 			txs[addr] = set
 		}
 	}

eth/api_backend.go

@@ -292,7 +292,7 @@ func (b *EthAPIBackend) SendTx(ctx context.Context, signedTx *types.Transaction)
 }
 
 func (b *EthAPIBackend) GetPoolTransactions() (types.Transactions, error) {
-	pending := b.eth.txPool.Pending(false)
+	pending := b.eth.txPool.Pending(nil, nil, nil)
 	var txs types.Transactions
 	for _, batch := range pending {
 		for _, lazy := range batch {

eth/catalyst/simulated_beacon.go

@@ -263,7 +263,7 @@ func (c *SimulatedBeacon) Rollback() {
 
 // Fork sets the head to the provided hash.
 func (c *SimulatedBeacon) Fork(parentHash common.Hash) error {
-	if len(c.eth.TxPool().Pending(false)) != 0 {
+	if len(c.eth.TxPool().Pending(nil, nil, nil)) != 0 {
 		return errors.New("pending block dirty")
 	}
 	parent := c.eth.BlockChain().GetBlockByHash(parentHash)
@@ -275,7 +275,7 @@ func (c *SimulatedBeacon) Fork(parentHash common.Hash) error {
 
 // AdjustTime creates a new block with an adjusted timestamp.
 func (c *SimulatedBeacon) AdjustTime(adjustment time.Duration) error {
-	if len(c.eth.TxPool().Pending(false)) != 0 {
+	if len(c.eth.TxPool().Pending(nil, nil, nil)) != 0 {
 		return errors.New("could not adjust time on non-empty block")
 	}
 	parent := c.eth.BlockChain().CurrentBlock()

eth/handler.go

@@ -42,6 +42,7 @@ import (
 	"github.com/ethereum/go-ethereum/metrics"
 	"github.com/ethereum/go-ethereum/p2p"
 	"github.com/ethereum/go-ethereum/triedb/pathdb"
+	"github.com/holiman/uint256"
 )
 
 const (
@@ -73,7 +74,7 @@ type txPool interface {
 
 	// Pending should return pending transactions.
 	// The slice should be modifiable by the caller.
-	Pending(enforceTips bool) map[common.Address][]*txpool.LazyTransaction
+	Pending(minTip *uint256.Int, baseFee *uint256.Int, blobFee *uint256.Int) map[common.Address][]*txpool.LazyTransaction
 
 	// SubscribeTransactions subscribes to new transaction events. The subscriber
 	// can decide whether to receive notifications only for newly seen transactions

eth/handler_test.go

@@ -34,6 +34,7 @@ import (
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/event"
 	"github.com/ethereum/go-ethereum/params"
+	"github.com/holiman/uint256"
 )
 
 var (
@@ -92,7 +93,7 @@ func (p *testTxPool) Add(txs []*types.Transaction, local bool, sync bool) []erro
 }
 
 // Pending returns all the transactions known to the pool
-func (p *testTxPool) Pending(enforceTips bool) map[common.Address][]*txpool.LazyTransaction {
+func (p *testTxPool) Pending(minTip *uint256.Int, baseFee *uint256.Int, blobFee *uint256.Int) map[common.Address][]*txpool.LazyTransaction {
 	p.lock.RLock()
 	defer p.lock.RUnlock()
 

eth/sync.go

@@ -36,7 +36,7 @@ const (
 // syncTransactions starts sending all currently pending transactions to the given peer.
 func (h *handler) syncTransactions(p *eth.Peer) {
 	var hashes []common.Hash
-	for _, batch := range h.txpool.Pending(false) {
+	for _, batch := range h.txpool.Pending(nil, nil, nil) {
 		for _, tx := range batch {
 			hashes = append(hashes, tx.Hash)
 		}

miner/worker.go

@@ -37,6 +37,7 @@ import (
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/trie"
+	"github.com/holiman/uint256"
 )
 
 const (
@@ -999,7 +1000,20 @@ func (w *worker) prepareWork(genParams *generateParams) (*environment, error) {
 // into the given sealing block. The transaction selection and ordering strategy can
 // be customized with the plugin in the future.
 func (w *worker) fillTransactions(interrupt *atomic.Int32, env *environment) error {
-	pending := w.eth.TxPool().Pending(true)
+	w.mu.RLock()
+	tip := w.tip
+	w.mu.RUnlock()
+
+	// Retrieve the pending transactions pre-filtered by the 1559/4844 dynamic fees
+	var baseFee *uint256.Int
+	if env.header.BaseFee != nil {
+		baseFee = uint256.MustFromBig(env.header.BaseFee)
+	}
+	var blobFee *uint256.Int
+	if env.header.ExcessBlobGas != nil {
+		blobFee = uint256.MustFromBig(eip4844.CalcBlobFee(*env.header.ExcessBlobGas))
+	}
+	pending := w.eth.TxPool().Pending(uint256.MustFromBig(tip), baseFee, blobFee)
 
 	// Split the pending transactions into locals and remotes.
 	localTxs, remoteTxs := make(map[common.Address][]*txpool.LazyTransaction), pending
@@ -1011,10 +1025,6 @@ func (w *worker) fillTransactions(interrupt *atomic.Int32, env *environment) err
 	}
 
 	// Fill the block with all available pending transactions.
-	w.mu.RLock()
-	tip := w.tip
-	w.mu.RUnlock()
-
 	if len(localTxs) > 0 {
 		txs := newTransactionsByPriceAndNonce(env.signer, localTxs, env.header.BaseFee)
 		if err := w.commitTransactions(env, txs, interrupt, new(big.Int)); err != nil {