diff --git a/lib/storage/index_db.go b/lib/storage/index_db.go
index 9b9c836053..cc2a716be5 100644
--- a/lib/storage/index_db.go
+++ b/lib/storage/index_db.go
@@ -802,7 +802,7 @@ func (is *indexSearch) searchTagKeys(tks map[string]struct{}, maxTagKeys int) er
 	prefix := kb.B
 	ts.Seek(prefix)
 	for len(tks) < maxTagKeys && ts.NextItem() {
-		if loopsPaceLimiter&(1<<18) == 0 {
+		if loopsPaceLimiter&paceLimiterFastIterationsMask == 0 {
 			if err := checkSearchDeadlineAndPace(is.deadline); err != nil {
 				return err
 			}
@@ -882,7 +882,7 @@ func (is *indexSearch) searchTagValues(tvs map[string]struct{}, tagKey []byte, m
 	prefix := kb.B
 	ts.Seek(prefix)
 	for len(tvs) < maxTagValues && ts.NextItem() {
-		if loopsPaceLimiter&(1<<18) == 0 {
+		if loopsPaceLimiter&paceLimiterFastIterationsMask == 0 {
 			if err := checkSearchDeadlineAndPace(is.deadline); err != nil {
 				return err
 			}
@@ -958,7 +958,7 @@ func (is *indexSearch) getSeriesCount() (uint64, error) {
 	kb.B = marshalTagValue(kb.B, nil)
 	ts.Seek(kb.B)
 	for ts.NextItem() {
-		if loopsPaceLimiter&(1<<18) == 0 {
+		if loopsPaceLimiter&paceLimiterFastIterationsMask == 0 {
 			if err := checkSearchDeadlineAndPace(is.deadline); err != nil {
 				return 0, err
 			}
@@ -1030,7 +1030,7 @@ func (is *indexSearch) getTSDBStatusForDate(date uint64, topN int) (*TSDBStatus,
 	prefix := kb.B
 	ts.Seek(prefix)
 	for ts.NextItem() {
-		if loopsPaceLimiter&(1<<18) == 0 {
+		if loopsPaceLimiter&paceLimiterFastIterationsMask == 0 {
 			if err := checkSearchDeadlineAndPace(is.deadline); err != nil {
 				return nil, err
 			}
@@ -1566,7 +1566,7 @@ func (is *indexSearch) searchTSIDs(tfss []*TagFilters, tr TimeRange, maxMetrics
 	tsids := make([]TSID, len(metricIDs))
 	i := 0
 	for loopsPaceLimiter, metricID := range metricIDs {
-		if loopsPaceLimiter&(1<<12) == 0 {
+		if loopsPaceLimiter&paceLimiterSlowIterationsMask == 0 {
 			if err := checkSearchDeadlineAndPace(is.deadline); err != nil {
 				return nil, err
 			}
@@ -1638,7 +1638,7 @@ func (is *indexSearch) updateMetricIDsByMetricNameMatch(metricIDs, srcMetricIDs
 	mn := GetMetricName()
 	defer PutMetricName(mn)
 	for loopsPaceLimiter, metricID := range sortedMetricIDs {
-		if loopsPaceLimiter&(1<<12) == 0 {
+		if loopsPaceLimiter&paceLimiterSlowIterationsMask == 0 {
 			if err := checkSearchDeadlineAndPace(is.deadline); err != nil {
 				return err
 			}
@@ -2126,7 +2126,7 @@ func (is *indexSearch) getMetricIDsForTagFilterSlow(tf *tagFilter, maxLoops int,
 	prefix := tf.prefix
 	ts.Seek(prefix)
 	for ts.NextItem() {
-		if loopsPaceLimiter&(1<<16) == 0 {
+		if loopsPaceLimiter&paceLimiterMediumIterationsMask == 0 {
 			if err := checkSearchDeadlineAndPace(is.deadline); err != nil {
 				return err
 			}
@@ -2250,7 +2250,7 @@ func (is *indexSearch) updateMetricIDsForOrSuffixNoFilter(prefix []byte, maxMetr
 	loopsPaceLimiter := 0
 	ts.Seek(prefix)
 	for metricIDs.Len() < maxMetrics && ts.NextItem() {
-		if loopsPaceLimiter&(1<<18) == 0 {
+		if loopsPaceLimiter&paceLimiterFastIterationsMask == 0 {
 			if err := checkSearchDeadlineAndPace(is.deadline); err != nil {
 				return err
 			}
@@ -2292,7 +2292,7 @@ func (is *indexSearch) updateMetricIDsForOrSuffixWithFilter(prefix []byte, metri
 	var sf []uint64
 	var metricID uint64
 	for ts.NextItem() {
-		if loopsPaceLimiter&(1<<14) == 0 {
+		if loopsPaceLimiter&paceLimiterMediumIterationsMask == 0 {
 			if err := checkSearchDeadlineAndPace(is.deadline); err != nil {
 				return err
 			}
@@ -2844,7 +2844,7 @@ func (is *indexSearch) updateMetricIDsForPrefix(prefix []byte, metricIDs *uint64
 	loopsPaceLimiter := 0
 	ts.Seek(prefix)
 	for ts.NextItem() {
-		if loopsPaceLimiter&(1<<18) == 0 {
+		if loopsPaceLimiter&paceLimiterFastIterationsMask == 0 {
 			if err := checkSearchDeadlineAndPace(is.deadline); err != nil {
 				return err
 			}
diff --git a/lib/storage/search.go b/lib/storage/search.go
index cc73bd2dc4..6736da5837 100644
--- a/lib/storage/search.go
+++ b/lib/storage/search.go
@@ -207,7 +207,7 @@ func (s *Search) NextMetricBlock() bool {
 		return false
 	}
 	for s.ts.NextBlock() {
-		if s.loops&(1<<12) == 0 {
+		if s.loops&paceLimiterSlowIterationsMask == 0 {
 			if err := checkSearchDeadlineAndPace(s.deadline); err != nil {
 				s.err = err
 				return false
@@ -421,3 +421,9 @@ func checkSearchDeadlineAndPace(deadline uint64) error {
 	storagepacelimiter.Search.WaitIfNeeded()
 	return nil
 }
+
+const (
+	paceLimiterFastIterationsMask   = 1<<16 - 1
+	paceLimiterMediumIterationsMask = 1<<14 - 1
+	paceLimiterSlowIterationsMask   = 1<<12 - 1
+)
diff --git a/lib/storage/storage.go b/lib/storage/storage.go
index f723ac4924..1791ebce5a 100644
--- a/lib/storage/storage.go
+++ b/lib/storage/storage.go
@@ -934,7 +934,7 @@ func (s *Storage) prefetchMetricNames(tsids []TSID, deadline uint64) error {
 	is := idb.getIndexSearch(accountID, projectID, deadline)
 	defer idb.putIndexSearch(is)
 	for loops, metricID := range metricIDs {
-		if loops&(1<<10) == 0 {
+		if loops&paceLimiterSlowIterationsMask == 0 {
 			if err := checkSearchDeadlineAndPace(is.deadline); err != nil {
 				return err
 			}