cmd, eth: apply default miner recommit setting (#17479)

cmd/utils/flags.go

@@ -367,7 +367,7 @@ var (
 	MinerRecommitIntervalFlag = cli.DurationFlag{
 		Name:  "miner.recommit",
 		Usage: "Time interval to recreate the block being mined.",
-		Value: 3 * time.Second,
+		Value: eth.DefaultConfig.MinerRecommit,
 	}
 	// Account settings
 	UnlockedAccountFlag = cli.StringFlag{

eth/config.go

@@ -49,6 +49,7 @@ var DefaultConfig = Config{
 	TrieCache:     256,
 	TrieTimeout:   60 * time.Minute,
 	MinerGasPrice: big.NewInt(18 * params.Shannon),
+	MinerRecommit: 3 * time.Second,
 
 	TxPool: core.DefaultTxPoolConfig,
 	GPO: gasprice.Config{