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core: calculate threshold once per block

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This commit is contained in:
Gary Rong 2026-01-04 14:07:36 +08:00
parent 24d3c430ab
commit 8f171432d8
1 changed files with 2 additions and 8 deletions
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10
core/state_prefetcher.go
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@ -44,13 +44,6 @@ const (
heavyTransactionPriority = 40 heavyTransactionPriority = 40
) )
// isHeavyTransaction returns an indicator whether the transaction is regarded
// as heavy or not.
func isHeavyTransaction(txGasLimit uint64, blockGasUsed uint64) bool {
threshold := min(blockGasUsed*heavyTransactionThreshold/100, params.MaxTxGas/2)
return txGasLimit >= threshold
}
// statePrefetcher is a basic Prefetcher that executes transactions from a block // statePrefetcher is a basic Prefetcher that executes transactions from a block
// on top of the parent state, aiming to prefetch potentially useful state data // on top of the parent state, aiming to prefetch potentially useful state data
// from disk. Transactions are executed in parallel to fully leverage the // from disk. Transactions are executed in parallel to fully leverage the
@ -85,6 +78,7 @@ func (p *statePrefetcher) Prefetch(block *types.Block, statedb *state.StateDB, c
processed = make(map[common.Hash]struct{}, len(block.Transactions())) processed = make(map[common.Hash]struct{}, len(block.Transactions()))
heavyTxs = make(chan *types.Transaction, len(block.Transactions())) heavyTxs = make(chan *types.Transaction, len(block.Transactions()))
normalTxs = make(chan *types.Transaction, len(block.Transactions())) normalTxs = make(chan *types.Transaction, len(block.Transactions()))
threshold = min(block.GasUsed()*heavyTransactionThreshold/100, params.MaxTxGas/2)
) )
for _, tx := range block.Transactions() { for _, tx := range block.Transactions() {
// Note: gasLimit is not equivalent to gasUsed. Ideally, transaction heaviness // Note: gasLimit is not equivalent to gasUsed. Ideally, transaction heaviness
@ -92,7 +86,7 @@ func (p *statePrefetcher) Prefetch(block *types.Block, statedb *state.StateDB, c
// execution, so gasLimit is used as the indicator instead. This allows transaction // execution, so gasLimit is used as the indicator instead. This allows transaction
// senders to inflate gasLimit to gain higher prefetch priority, but this // senders to inflate gasLimit to gain higher prefetch priority, but this
// trade-off is unavoidable. // trade-off is unavoidable.
if isHeavyTransaction(tx.Gas(), block.GasUsed()) { if tx.Gas() > threshold {
heavyTxs <- tx heavyTxs <- tx
} }
// The heavy transaction will also be emitted with the normal prefetching // The heavy transaction will also be emitted with the normal prefetching