diff --git a/les/costtracker.go b/les/costtracker.go
index 1d369d9404a3..81da04566007 100644
--- a/les/costtracker.go
+++ b/les/costtracker.go
@@ -360,6 +360,7 @@ func (ct *costTracker) gfLoop() {
 							default:
 							}
 						}
+						globalFactorGauge.Update(int64(1000 * factor))
 						log.Debug("global cost factor updated", "factor", factor)
 					}
 				}
diff --git a/les/metrics.go b/les/metrics.go
index 688235937d6f..9ef8c365180c 100644
--- a/les/metrics.go
+++ b/les/metrics.go
@@ -66,8 +66,8 @@ var (
 	miscServingTimeReceiptTimer    = metrics.NewRegisteredTimer("les/misc/serve/receipt", nil)
 	miscServingTimeTrieProofTimer  = metrics.NewRegisteredTimer("les/misc/serve/proof", nil)
 	miscServingTimeHelperTrieTimer = metrics.NewRegisteredTimer("les/misc/serve/helperTrie", nil)
-	miscServingTimeTxTimer         = metrics.NewRegisteredTimer("les/misc/serve/tx", nil)
-	miscServingTimeTxStatusTimer   = metrics.NewRegisteredTimer("les/misc/serve/txstatus", nil)
+	miscServingTimeTxTimer         = metrics.NewRegisteredTimer("les/misc/serve/txs", nil)
+	miscServingTimeTxStatusTimer   = metrics.NewRegisteredTimer("les/misc/serve/txStatus", nil)
 
 	connectionTimer       = metrics.NewRegisteredTimer("les/connection/duration", nil)
 	serverConnectionGauge = metrics.NewRegisteredGauge("les/connection/server", nil)
@@ -88,10 +88,11 @@ var (
 	relativeCostReceiptHistogram     = metrics.NewRegisteredHistogram("les/server/req/relative/receipt", nil, metrics.NewExpDecaySample(1028, 0.015))
 	relativeCostCodeHistogram        = metrics.NewRegisteredHistogram("les/server/req/relative/code", nil, metrics.NewExpDecaySample(1028, 0.015))
 	relativeCostProofHistogram       = metrics.NewRegisteredHistogram("les/server/req/relative/proof", nil, metrics.NewExpDecaySample(1028, 0.015))
-	relativeCostHelperProofHistogram = metrics.NewRegisteredHistogram("les/server/req/relative/helperproof", nil, metrics.NewExpDecaySample(1028, 0.015))
-	relativeCostSendTxHistogram      = metrics.NewRegisteredHistogram("les/server/req/relative/sendtx", nil, metrics.NewExpDecaySample(1028, 0.015))
-	relativeCostTxStatusHistogram    = metrics.NewRegisteredHistogram("les/server/req/relative/txstatus", nil, metrics.NewExpDecaySample(1028, 0.015))
+	relativeCostHelperProofHistogram = metrics.NewRegisteredHistogram("les/server/req/relative/helperTrie", nil, metrics.NewExpDecaySample(1028, 0.015))
+	relativeCostSendTxHistogram      = metrics.NewRegisteredHistogram("les/server/req/relative/txs", nil, metrics.NewExpDecaySample(1028, 0.015))
+	relativeCostTxStatusHistogram    = metrics.NewRegisteredHistogram("les/server/req/relative/txStatus", nil, metrics.NewExpDecaySample(1028, 0.015))
 
+	globalFactorGauge    = metrics.NewRegisteredGauge("les/server/globalFactor", nil)
 	recentServedGauge    = metrics.NewRegisteredGauge("les/server/recentRequestServed", nil)
 	recentEstimatedGauge = metrics.NewRegisteredGauge("les/server/recentRequestEstimated", nil)
 	sqServedGauge        = metrics.NewRegisteredGauge("les/server/servingQueue/served", nil)
diff --git a/light/lightchain.go b/light/lightchain.go
index 7f64d1c28bbe..9529c2e1b90a 100644
--- a/light/lightchain.go
+++ b/light/lightchain.go
@@ -438,9 +438,6 @@ func (lc *LightChain) GetBlockHashesFromHash(hash common.Hash, max uint64) []com
 //
 // Note: ancestor == 0 returns the same block, 1 returns its parent and so on.
 func (lc *LightChain) GetAncestor(hash common.Hash, number, ancestor uint64, maxNonCanonical *uint64) (common.Hash, uint64) {
-	lc.chainmu.RLock()
-	defer lc.chainmu.RUnlock()
-
 	return lc.hc.GetAncestor(hash, number, ancestor, maxNonCanonical)
 }