set suggetsion gas price as 0 if not found

update txn selection algo

app/abci_utils.go

@@ -265,40 +265,46 @@ func (h *DefaultProposalHandler) PrepareProposalHandler() sdk.PrepareProposalHan
 			}
 
 			remaing := gasPriceSuggestionBlockNum * int64(maxBlockGas)
-			for len(txnInfoMap) > 0 && remaing > 0 {
+			var lastProcessedTx *txnInfo
 
-				// pop each sender's first continuous decreasing subsequence
+			for remaing > 0 && len(txnInfoMap) > 0 {
-				txnCnt := 0
+				// Find the highest gas price among the first transaction of each account
-				senderNonceSortedSliceGroup := make([][]*txnInfo, 0, senderCnt)
+				var highestGasPrice *big.Int
-				for sender := range txnInfoMap {
+				var selectedSender string
-					endIndex := findFirstContinuousDecreasingSubsequence(txnInfoMap[sender])
+
-					appendSlice := txnInfoMap[sender][:endIndex]
+				// Compare first transaction (lowest nonce) from each account
-					senderNonceSortedSliceGroup = append(senderNonceSortedSliceGroup, appendSlice)
+				for sender, txns := range txnInfoMap {
-					txnCnt += len(appendSlice)
+					if len(txns) == 0 {
-					txnInfoMap[sender] = txnInfoMap[sender][endIndex:]
-					if len(txnInfoMap[sender]) == 0 {
 						delete(txnInfoMap, sender)
+						continue
+					}
+
+					// First tx has lowest nonce due to earlier sorting
+					if highestGasPrice == nil || txns[0].gasPrice.Cmp(highestGasPrice) > 0 {
+						highestGasPrice = txns[0].gasPrice
+						selectedSender = sender
 					}
 				}
 
-				var gasPriceSortedSlice []*txnInfo
+				if selectedSender == "" {
-				if len(senderNonceSortedSliceGroup) > 0 {
-					gasPriceSortedSlice = make([]*txnInfo, 0, len(senderNonceSortedSliceGroup[0]))
-					for i := range senderNonceSortedSliceGroup {
-						gasPriceSortedSlice = mergeSort(len(gasPriceSortedSlice)+len(senderNonceSortedSliceGroup[i]), gasPriceSortedSlice, senderNonceSortedSliceGroup[i])
-					}
-				}
-
-				for i := range gasPriceSortedSlice {
-					remaing -= int64(gasPriceSortedSlice[i].gasLimit)
-					if remaing <= 0 {
-						h.feemarketKeeper.SetSuggestionGasPrice(ctx, gasPriceSortedSlice[i].gasPrice)
 					break
 				}
+
+				// Process the selected transaction
+				selectedTx := txnInfoMap[selectedSender][0]
+				remaing -= int64(selectedTx.gasLimit)
+				lastProcessedTx = selectedTx
+
+				// Remove processed transaction
+				txnInfoMap[selectedSender] = txnInfoMap[selectedSender][1:]
+				if len(txnInfoMap[selectedSender]) == 0 {
+					delete(txnInfoMap, selectedSender)
 				}
 			}
 
-			if remaing > 0 {
+			if lastProcessedTx != nil && remaing <= 0 {
+				h.feemarketKeeper.SetSuggestionGasPrice(ctx, lastProcessedTx.gasPrice)
+			} else {
 				h.feemarketKeeper.SetSuggestionGasPrice(ctx, big.NewInt(0))
 			}
 		}
@@ -460,45 +466,3 @@ func utilCosmosDemonGasPriceToEvmDemonGasPrice(gasGroup sdk.Coins) (*big.Int, er
 func utilCosmosDemonGasLimitToEvmDemonGasLimit(gasLimit uint64) uint64 {
 	return gasLimit * chaincfg.GasDenomConversionMultiplier
 }
-
-func findFirstContinuousDecreasingSubsequence(data []*txnInfo) int {
-	ll := len(data)
-	if ll < 2 {
-		return ll
-	}
-
-	for i := 0; i < ll-1; i++ {
-		if data[i].gasPrice.Cmp(data[i+1].gasPrice) >= 0 {
-			end := i + 1
-			for ; end < ll && data[end-1].gasPrice.Cmp(data[end].gasPrice) > 0; end++ {
-			}
-			if end == ll || data[end-1].gasPrice.Cmp(data[end].gasPrice) <= 0 {
-				return end
-			}
-		} else {
-			return i + 1
-		}
-	}
-
-	return ll
-}
-
-func mergeSort(size int, left, right []*txnInfo) []*txnInfo {
-	result := make([]*txnInfo, 0, size)
-	i, j := 0, 0
-
-	for i < len(left) && j < len(right) {
-		if left[i].gasPrice.Cmp(right[j].gasPrice) > 0 {
-			result = append(result, left[i])
-			i++
-		} else {
-			result = append(result, right[j])
-			j++
-		}
-	}
-
-	result = append(result, left[i:]...)
-	result = append(result, right[j:]...)
-
-	return result
-}

go.mod

@@ -250,7 +250,7 @@ replace (
 	// TODO: Tag before release
 	github.com/ethereum/go-ethereum => github.com/evmos/go-ethereum v1.10.26-evmos-rc2
 	// Use ethermint fork that respects min-gas-price with NoBaseFee true and london enabled, and includes eip712 support
-	github.com/evmos/ethermint => github.com/0glabs/ethermint v0.21.0-0g.v3.1.9
+	github.com/evmos/ethermint => github.com/0glabs/ethermint v0.21.0-0g.v3.1.10
 	// See https://github.com/cosmos/cosmos-sdk/pull/10401, https://github.com/cosmos/cosmos-sdk/commit/0592ba6158cd0bf49d894be1cef4faeec59e8320
 	github.com/gin-gonic/gin => github.com/gin-gonic/gin v1.9.0
 	// Downgraded to avoid bugs in following commits which causes "version does not exist" errors

go.sum

@@ -213,8 +213,8 @@ github.com/0glabs/cometbft v0.37.9-0glabs.1 h1:KQJG17Y21suKP3QNICLto4b5Ak73XbSmK
 github.com/0glabs/cometbft v0.37.9-0glabs.1/go.mod h1:j0Q3RqrCd+cztWCugs3obbzC4NyHGBPZZjtm/fWV00I=
 github.com/0glabs/cosmos-sdk v0.47.10-0glabs.10 h1:NJp0RwczHBO4EvrQdDxxftHOgUDBtNh7M/vpaG7wFtQ=
 github.com/0glabs/cosmos-sdk v0.47.10-0glabs.10/go.mod h1:KskIVnhXTFqrw7CDccMvx7To5KzUsOomIsQV7sPGOog=
-github.com/0glabs/ethermint v0.21.0-0g.v3.1.9 h1:oTHp7tSAqoML7D/+RXsBzA9DsbZ80MX93VJYjR/Akh4=
+github.com/0glabs/ethermint v0.21.0-0g.v3.1.10 h1:DE8hK2OJp9rKYdT2Y0G259/6nAFcOQi383l2e7/VFnE=
-github.com/0glabs/ethermint v0.21.0-0g.v3.1.9/go.mod h1:6e/gOcDLhvlDWK3JLJVBgki0gD6H4E1eG7l9byocgWA=
+github.com/0glabs/ethermint v0.21.0-0g.v3.1.10/go.mod h1:6e/gOcDLhvlDWK3JLJVBgki0gD6H4E1eG7l9byocgWA=
 github.com/99designs/go-keychain v0.0.0-20191008050251-8e49817e8af4 h1:/vQbFIOMbk2FiG/kXiLl8BRyzTWDw7gX/Hz7Dd5eDMs=
 github.com/99designs/go-keychain v0.0.0-20191008050251-8e49817e8af4/go.mod h1:hN7oaIRCjzsZ2dE+yG5k+rsdt3qcwykqK6HVGcKwsw4=
 github.com/Azure/azure-sdk-for-go/sdk/azcore v0.21.1/go.mod h1:fBF9PQNqB8scdgpZ3ufzaLntG0AG7C1WjPMsiFOmfHM=