Optimize gas price oracle and increase default gas ceil (#136)

* update default gas ceiling for mined blocks

* version

* increase tx mas size

core/tx_pool.go

@@ -50,7 +50,7 @@ const (
 	// non-trivial consequences: larger transactions are significantly harder and
 	// more expensive to propagate; larger transactions also take more resources
 	// to validate whether they fit into the pool or not.
-	txMaxSize = 4 * txSlotSize // 128KB
+	txMaxSize = 5 * txSlotSize // 160KB
 )
 
 var (

eth/ethconfig/config.go

@@ -88,7 +88,7 @@ var Defaults = Config{
 	SnapshotCache:           102,
 	FilterLogCacheSize:      32,
 	Miner: miner.Config{
-		GasCeil:  14000000,
+		GasCeil:  20000000,
 		GasPrice: big.NewInt(params.GWei),
 		Recommit: 3 * time.Second,
 	},

eth/gasprice/gasprice.go

@@ -38,6 +38,8 @@ var (
 	DefaultMaxPrice    = big.NewInt(500 * params.GWei)
 	DefaultMinPrice    = big.NewInt(3 * params.GWei)
 	DefaultIgnorePrice = big.NewInt(2 * params.Wei)
+
+	DefaultGasUsedRatio = 0.9
 )
 
 type Config struct {
@@ -279,26 +281,33 @@ func (oracle *Oracle) getBlockValues(ctx context.Context, signer types.Signer, b
 		}
 		return
 	}
-	// Sort the transaction by effective tip in ascending sort.
-	txs := make([]*types.Transaction, len(block.Transactions()))
-	copy(txs, block.Transactions())
-	sorter := newSorter(txs, block.BaseFee())
-	sort.Sort(sorter)
 
 	var prices []*big.Int
-	for _, tx := range sorter.txs {
-		tip, _ := tx.EffectiveGasTip(block.BaseFee())
-		if ignoreUnder != nil && tip.Cmp(ignoreUnder) == -1 {
-			continue
-		}
-		sender, err := types.Sender(signer, tx)
-		if err == nil && sender != block.Coinbase() {
-			prices = append(prices, tip)
-			if len(prices) >= limit {
-				break
+	gasUsedRatio := float64(block.Header().GasUsed) / float64(block.Header().GasLimit)
+	if gasUsedRatio < DefaultGasUsedRatio {
+		prices = append(prices, []*big.Int{DefaultMinPrice, DefaultMinPrice, DefaultMinPrice}...)
+	} else {
+		// Sort the transaction by effective tip in ascending sort.
+		txs := make([]*types.Transaction, len(block.Transactions()))
+		copy(txs, block.Transactions())
+		sorter := newSorter(txs, block.BaseFee())
+		sort.Sort(sorter)
+
+		for _, tx := range sorter.txs {
+			tip, _ := tx.EffectiveGasTip(block.BaseFee())
+			if ignoreUnder != nil && tip.Cmp(ignoreUnder) == -1 {
+				continue
+			}
+			sender, err := types.Sender(signer, tx)
+			if err == nil && sender != block.Coinbase() {
+				prices = append(prices, tip)
+				if len(prices) >= limit {
+					break
+				}
 			}
 		}
 	}
+
 	select {
 	case result <- results{prices, nil}:
 	case <-quit:

params/version.go

@@ -21,10 +21,10 @@ import (
 )
 
 const (
-	VersionMajor = 1        // Major version component of the current release
-	VersionMinor = 4        // Minor version component of the current release
-	VersionPatch = 2        // Patch version component of the current release
-	VersionMeta  = "stable" // Version metadata to append to the version string
+	VersionMajor = 1          // Major version component of the current release
+	VersionMinor = 4          // Minor version component of the current release
+	VersionPatch = 3          // Patch version component of the current release
+	VersionMeta  = "unstable" // Version metadata to append to the version string
 )
 
 // Version holds the textual version string.