update min gas to 30 gwei

core/tx_pool.go

@@ -170,7 +170,7 @@ var DefaultTxPoolConfig = TxPoolConfig{
 	Journal:   "transactions.rlp",
 	Rejournal: time.Hour,
 
-	PriceLimit: 5e10, // 50 Gwei/Nano
+	PriceLimit: 3e10, // 30 Gwei/Nano
 	PriceBump:  10,
 
 	AccountSlots: 16,

hmy/hmy.go

@@ -153,7 +153,7 @@ func New(
 	gpoParams := GasPriceConfig{
 		Blocks:     20,
 		Percentile: 60,
-		Default:    big.NewInt(5e10),
+		Default:    big.NewInt(3e10),
 	}
 	gpo := NewOracle(backend, gpoParams)
 	backend.gpo = gpo

rpc/harmony.go

@@ -60,8 +60,8 @@ func (s *PublicHarmonyService) Syncing(
 // Note that the return type is an interface to account for the different versions
 func (s *PublicHarmonyService) GasPrice(ctx context.Context) (interface{}, error) {
 	price, err := s.hmy.SuggestPrice(ctx)
-	if err != nil || price.Cmp(big.NewInt(5e10)) < 0 {
-		price = big.NewInt(5e10)
+	if err != nil || price.Cmp(big.NewInt(3e10)) < 0 {
+		price = big.NewInt(3e10)
 	}
 	// Format response according to version
 	switch s.version {