[release/1.4.16] cmd/utils: disable jitvm A/B test

Author: fjl

cmd/utils/flags.go

@@ -22,13 +22,11 @@ import (
 	"io/ioutil"
 	"math"
 	"math/big"
-	"math/rand"
 	"os"
 	"path/filepath"
 	"runtime"
 	"strconv"
 	"strings"
-	"time"
 
 	"github.com/ethereum/ethash"
 	"github.com/ethereum/go-ethereum/accounts"
@@ -667,17 +665,7 @@ func MakeSystemNode(name, version string, relconf release.Config, extra []byte,
 	}
 	// Configure the Ethereum service
 	accman := MakeAccountManager(ctx)
-
-	// initialise new random number generator
-	rand := rand.New(rand.NewSource(time.Now().UnixNano()))
-	// get enabled jit flag
 	jitEnabled := ctx.GlobalBool(VMEnableJitFlag.Name)
-	// if the jit is not enabled enable it for 10 pct of the people
-	if !jitEnabled && rand.Float64() < 0.1 {
-		jitEnabled = true
-		glog.V(logger.Info).Infoln("You're one of the lucky few that will try out the JIT VM (random). If you get a consensus failure please be so kind to report this incident with the block hash that failed. You can switch to the regular VM by setting --jitvm=false")
-	}
-
 	ethConf := &eth.Config{
 		ChainConfig:             MustMakeChainConfig(ctx),
 		FastSync:                ctx.GlobalBool(FastSyncFlag.Name),