Add poll interval flag

cmd/geth/main.go

@@ -234,6 +234,7 @@ JavaScript API. See https://github.com/ethereum/go-ethereum/wiki/Javascipt-Conso
 		utils.GpobaseCorrectionFactorFlag,
 		utils.ExtraDataFlag,
 		utils.FixedDifficultyFlag,
+		utils.PollIntervalFlag,
 		utils.MinerPassphraseFlag,
 	}
 	app.Flags = append(app.Flags, debug.Flags...)

cmd/utils/flags.go

@@ -397,6 +397,11 @@ var (
 		Usage: "Specify a fixed difficulty.",
 		Value: -1,
 	}
+	PollIntervalFlag = cli.IntFlag{
+		Name:  "interval",
+		Usage: "Miner polling interval in milliseconds.",
+		Value: 200,
+	}
 	MinerPassphraseFlag = cli.StringFlag{
 		Name:  "minerpass",
 		Usage: "Passphrase used to unlock key for signing blocks.",
@@ -723,6 +728,8 @@ func MakeSystemNode(name, version string, relconf release.Config, extra []byte,
 		SolcPath:                ctx.GlobalString(SolcPathFlag.Name),
 		AutoDAG:                 ctx.GlobalBool(AutoDAGFlag.Name) || ctx.GlobalBool(MiningEnabledFlag.Name),
 		MinerPassphrase:         ctx.GlobalString(MinerPassphraseFlag.Name),
+		FixedDifficulty:         ctx.GlobalInt(FixedDifficultyFlag.Name),
+		PollInterval:            ctx.GlobalInt(PollIntervalFlag.Name),
 	}
 	// Configure the Whisper service
 	shhEnable := ctx.GlobalBool(WhisperEnabledFlag.Name)

eth/backend.go

@@ -102,6 +102,7 @@ type Config struct {
 	TestGenesisState ethdb.Database // Genesis state to seed the database with (testing only!)
 
 	FixedDifficulty int
+	PollInterval    int
 	MinerPassphrase string
 }
 
@@ -147,6 +148,7 @@ type Ethereum struct {
 	netRPCService *PublicNetAPI
 
 	fixedDifficulty int
+	pollInterval    int
 	minerPassphrase string
 }
 
@@ -224,6 +226,8 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) {
 		GpobaseStepUp:           config.GpobaseStepUp,
 		GpobaseCorrectionFactor: config.GpobaseCorrectionFactor,
 		httpclient:              httpclient.New(config.DocRoot),
+		fixedDifficulty:         config.FixedDifficulty,
+		pollInterval:            config.PollInterval,
 		minerPassphrase:         config.MinerPassphrase,
 	}
 	switch {
@@ -389,6 +393,8 @@ func (s *Ethereum) StopMining()             { s.miner.Stop() }
 func (s *Ethereum) IsMining() bool          { return s.miner.Mining() }
 func (s *Ethereum) Miner() *miner.Miner     { return s.miner }
 func (s *Ethereum) MinerPassphrase() string { return s.minerPassphrase }
+func (s *Ethereum) FixedDifficulty() int    { return s.fixedDifficulty }
+func (s *Ethereum) PollInterval() int       { return s.pollInterval }
 
 func (s *Ethereum) AccountManager() *accounts.Manager  { return s.accountManager }
 func (s *Ethereum) BlockChain() *core.BlockChain       { return s.blockchain }

miner/miner.go

@@ -140,7 +140,7 @@ func (self *Miner) runLoop() {
 				self.Start(self.coinbase, self.threads)
 			}
 		}
-		time.Sleep(3000 * time.Millisecond)
+		time.Sleep(self.eth.PollInterval() * time.Millisecond)
 	}
 }