diff --git a/core/filtermaps/filtermaps.go b/core/filtermaps/filtermaps.go
index 90b6e9eb9b..ed6a00c965 100644
--- a/core/filtermaps/filtermaps.go
+++ b/core/filtermaps/filtermaps.go
@@ -49,18 +49,22 @@ type blockchain interface {
 // without the tree hashing and consensus changes:
 // https://eips.ethereum.org/EIPS/eip-7745
 type FilterMaps struct {
-	lock                  sync.RWMutex
-	db                    ethdb.KeyValueStore
 	closeCh               chan struct{}
 	closeWg               sync.WaitGroup
 	history, unindexLimit uint64
 	noHistory             bool
-
 	Params
-	filterMapsRange
 	chain         blockchain
 	matcherSyncCh chan *FilterMapsMatcherBackend
-	matchers      map[*FilterMapsMatcherBackend]struct{}
+
+	// db and range are only modified by indexer under write lock; indexer can
+	// read them without a lock while matchers can access them under read lock
+	lock sync.RWMutex
+	db   ethdb.KeyValueStore
+	filterMapsRange
+
+	matchers map[*FilterMapsMatcherBackend]struct{}
+
 	// filterMapCache caches certain filter maps (headCacheSize most recent maps
 	// and one tail map) that are expected to be frequently accessed and modified
 	// while updating the structure. Note that the set of cached maps depends
@@ -71,6 +75,11 @@ type FilterMaps struct {
 	lvPointerCache *lru.Cache[uint64, uint64]
 	revertPoints   map[uint64]*revertPoint
 
+	startHeadUpdate, loggedHeadUpdate, loggedTailExtend, loggedTailUnindex bool
+	startedHeadUpdate, startedTailExtend, startedTailUnindex               time.Time
+	lastLogHeadUpdate, lastLogTailExtend, lastLogTailUnindex               time.Time
+	ptrHeadUpdate, ptrTailExtend, ptrTailUnindex                           uint64
+
 	waitIdleCh chan chan bool
 }
 
@@ -120,13 +129,14 @@ func NewFilterMaps(db ethdb.KeyValueStore, chain blockchain, params Params, hist
 	}
 	params.deriveFields()
 	fm := &FilterMaps{
-		db:         db,
-		chain:      chain,
-		closeCh:    make(chan struct{}),
-		waitIdleCh: make(chan chan bool),
-		history:    history,
-		noHistory:  noHistory,
-		Params:     params,
+		db:           db,
+		chain:        chain,
+		closeCh:      make(chan struct{}),
+		waitIdleCh:   make(chan chan bool),
+		history:      history,
+		noHistory:    noHistory,
+		unindexLimit: unindexLimit,
+		Params:       params,
 		filterMapsRange: filterMapsRange{
 			initialized:     rs.Initialized,
 			headLvPointer:   rs.HeadLvPointer,
@@ -151,13 +161,14 @@ func NewFilterMaps(db ethdb.KeyValueStore, chain blockchain, params Params, hist
 	return fm
 }
 
+// Start starts the indexer.
 func (f *FilterMaps) Start() {
 	f.closeWg.Add(2)
 	go f.removeBloomBits()
 	go f.updateLoop()
 }
 
-// Close ensures that the indexer is fully stopped before returning.
+// Stop ensures that the indexer is fully stopped before returning.
 func (f *FilterMaps) Stop() {
 	close(f.closeCh)
 	f.closeWg.Wait()
@@ -172,10 +183,10 @@ func (f *FilterMaps) reset() bool {
 	f.revertPoints = make(map[uint64]*revertPoint)
 	f.blockPtrCache.Purge()
 	f.lvPointerCache.Purge()
-	f.lock.Unlock()
 	// deleting the range first ensures that resetDb will be called again at next
 	// startup and any leftover data will be removed even if it cannot finish now.
 	rawdb.DeleteFilterMapsRange(f.db)
+	f.lock.Unlock()
 	return f.removeDbWithPrefix(rawdb.FilterMapsPrefix, "Resetting log index database")
 }
 
diff --git a/core/filtermaps/indexer.go b/core/filtermaps/indexer.go
index 0b1db011e8..1703c858fe 100644
--- a/core/filtermaps/indexer.go
+++ b/core/filtermaps/indexer.go
@@ -29,10 +29,11 @@ import (
 )
 
 const (
-	startLvMap           = 1 << 31        // map index assigned to init block
-	removedPointer       = math.MaxUint64 // used in updateBatch to signal removed items
-	revertPointFrequency = 256            // frequency of revert points in database
-	cachedRevertPoints   = 64             // revert points for most recent blocks in memory
+	startLvMap           = 1 << 31         // map index assigned to init block
+	removedPointer       = math.MaxUint64  // used in updateBatch to signal removed items
+	revertPointFrequency = 256             // frequency of revert points in database
+	cachedRevertPoints   = 64              // revert points for most recent blocks in memory
+	logFrequency         = time.Second * 8 // log info frequency during long indexing/unindexing process
 )
 
 // updateLoop initializes and updates the log index structure according to the
@@ -44,7 +45,10 @@ func (f *FilterMaps) updateLoop() {
 		f.reset()
 		return
 	}
+
+	f.lock.Lock()
 	f.updateMapCache()
+	f.lock.Unlock()
 	if rp, err := f.newUpdateBatch().makeRevertPoint(); err == nil {
 		f.revertPoints[rp.blockNumber] = rp
 	} else {
@@ -198,6 +202,7 @@ func (f *FilterMaps) tryInit(head *types.Header) bool {
 		log.Error("Could not initialize log index", "error", err)
 	}
 	f.applyUpdateBatch(update)
+	log.Info("Initialized log index", "head", head.Number.Uint64())
 	return true
 }
 
@@ -209,6 +214,32 @@ func (f *FilterMaps) tryInit(head *types.Header) bool {
 // indexer should exit and remaining parts of the old database will be removed
 // at next startup.
 func (f *FilterMaps) tryUpdateHead(newHead *types.Header) bool {
+	defer func() {
+		fmr := f.getRange()
+		if newHead.Hash() == fmr.headBlockHash {
+			if f.loggedHeadUpdate {
+				log.Info("Forward log indexing finished", "processed", fmr.headBlockNumber-f.ptrHeadUpdate,
+					"elapsed", common.PrettyDuration(time.Since(f.lastLogHeadUpdate)))
+				f.loggedHeadUpdate, f.startHeadUpdate = false, false
+			}
+		} else {
+			if time.Since(f.lastLogHeadUpdate) > logFrequency || !f.loggedHeadUpdate {
+				log.Info("Forward log indexing in progress", "processed", fmr.headBlockNumber-f.ptrHeadUpdate,
+					"remaining", newHead.Number.Uint64()-fmr.headBlockNumber,
+					"elapsed", common.PrettyDuration(time.Since(f.startedHeadUpdate)))
+				f.loggedHeadUpdate = true
+				f.lastLogHeadUpdate = time.Now()
+			}
+		}
+
+	}()
+
+	if !f.startHeadUpdate {
+		f.lastLogHeadUpdate = time.Now()
+		f.startedHeadUpdate = f.lastLogHeadUpdate
+		f.startHeadUpdate = true
+		f.ptrHeadUpdate = f.getRange().headBlockNumber
+	}
 	// iterate back from new head until the log index head or a revert point and
 	// collect headers of blocks to be added
 	var (
@@ -305,14 +336,41 @@ func (f *FilterMaps) tryUpdateTail(head *types.Header, stopFn func() bool) bool
 // tryExtendTail attempts to extend the log index backwards until the desired
 // indexed history length is achieved. Returns true if finished.
 func (f *FilterMaps) tryExtendTail(tailTarget uint64, stopFn func() bool) bool {
+	defer func() {
+		fmr := f.getRange()
+		if fmr.tailBlockNumber <= tailTarget {
+			if f.loggedTailExtend {
+				log.Info("Reverse log indexing finished", "history", fmr.headBlockNumber+1-fmr.tailBlockNumber,
+					"processed", f.ptrTailExtend-fmr.tailBlockNumber, "elapsed", common.PrettyDuration(time.Since(f.lastLogTailExtend)))
+				f.loggedTailExtend = false
+			}
+		}
+	}()
+
 	fmr := f.getRange()
 	number, parentHash := fmr.tailBlockNumber, fmr.tailParentHash
+
+	if !f.loggedTailExtend {
+		f.lastLogTailExtend = time.Now()
+		f.startedTailExtend = f.lastLogTailExtend
+		f.ptrTailExtend = fmr.tailBlockNumber
+	}
+
 	update := f.newUpdateBatch()
 	lastTailEpoch := update.tailEpoch()
 	for number > tailTarget && !stopFn() {
 		if tailEpoch := update.tailEpoch(); tailEpoch < lastTailEpoch {
 			// limit the amount of data updated in a single batch
 			f.applyUpdateBatch(update)
+
+			if time.Since(f.lastLogTailExtend) > logFrequency || !f.loggedTailExtend {
+				log.Info("Reverse log indexing in progress", "history", update.headBlockNumber+1-update.tailBlockNumber,
+					"processed", f.ptrTailExtend-update.tailBlockNumber, "remaining", update.tailBlockNumber-tailTarget,
+					"elapsed", common.PrettyDuration(time.Since(f.startedTailExtend)))
+				f.loggedTailExtend = true
+				f.lastLogTailExtend = time.Now()
+			}
+
 			update = f.newUpdateBatch()
 			lastTailEpoch = tailEpoch
 		}
@@ -339,10 +397,27 @@ func (f *FilterMaps) tryExtendTail(tailTarget uint64, stopFn func() bool) bool {
 // tryUnindexTail attempts to prune the log index tail until the desired indexed
 // history length is achieved. Returns true if finished.
 func (f *FilterMaps) tryUnindexTail(tailTarget uint64, stopFn func() bool) bool {
+	if !f.loggedTailUnindex {
+		f.lastLogTailUnindex = time.Now()
+		f.startedTailUnindex = f.lastLogTailUnindex
+		f.ptrTailUnindex = f.getRange().tailBlockNumber
+	}
 	for {
 		if f.unindexTailEpoch(tailTarget) {
+			fmr := f.getRange()
+			log.Info("Log unindexing finished", "history", fmr.headBlockNumber+1-fmr.tailBlockNumber,
+				"removed", fmr.tailBlockNumber-f.ptrTailUnindex, "elapsed", common.PrettyDuration(time.Since(f.lastLogTailUnindex)))
+			f.loggedTailUnindex = false
 			return true
 		}
+		if time.Since(f.lastLogTailUnindex) > logFrequency || !f.loggedTailUnindex {
+			fmr := f.getRange()
+			log.Info("Log unindexing in progress", "history", fmr.headBlockNumber+1-fmr.tailBlockNumber,
+				"removed", fmr.tailBlockNumber-f.ptrTailUnindex, "remaining", tailTarget-fmr.tailBlockNumber,
+				"elapsed", common.PrettyDuration(time.Since(f.startedTailUnindex)))
+			f.loggedTailUnindex = true
+			f.lastLogTailUnindex = time.Now()
+		}
 		if stopFn() {
 			return false
 		}
@@ -402,6 +477,7 @@ func (f *FilterMaps) unindexTailEpoch(tailTarget uint64) (finished bool) {
 // by updating the tail pointers, except for targetLvPointer which is not changed
 // yet as it marks the tail of the log index data stored in the database and
 // therefore should be updated when map data is actually removed.
+// Note that this function assumes that the read/write lock is being held.
 func (f *FilterMaps) unindexTailPtr(tailTarget uint64) (newTailMap uint32, changed bool) {
 	// obtain target log value pointer
 	if tailTarget <= f.tailBlockNumber || tailTarget > f.headBlockNumber {
@@ -542,7 +618,6 @@ func (f *FilterMaps) applyUpdateBatch(u *updateBatch) {
 	if err := batch.Write(); err != nil {
 		log.Crit("Could not write update batch", "error", err)
 	}
-	log.Info("Log index block range updated", "tail", u.tailBlockNumber, "head", u.headBlockNumber, "log values", u.headLvPointer-u.tailBlockLvPointer)
 }
 
 // updatedRangeLength returns the lenght of the updated filter map range.
diff --git a/core/filtermaps/matcher_backend.go b/core/filtermaps/matcher_backend.go
index 0bc87e1e93..37a51eac48 100644
--- a/core/filtermaps/matcher_backend.go
+++ b/core/filtermaps/matcher_backend.go
@@ -167,6 +167,7 @@ func (fm *FilterMapsMatcherBackend) SyncLogIndex(ctx context.Context) (SyncRange
 // valid range with the current indexed range. This function should be called
 // whenever a part of the log index has been removed, before adding new blocks
 // to it.
+// Note that this function assumes that the read lock is being held.
 func (f *FilterMaps) updateMatchersValidRange() {
 	for fm := range f.matchers {
 		if !f.initialized {