diff --git a/lib/mergeset/table.go b/lib/mergeset/table.go
index 043260961a..28e632dd05 100644
--- a/lib/mergeset/table.go
+++ b/lib/mergeset/table.go
@@ -10,6 +10,7 @@ import (
 	"sync"
 	"sync/atomic"
 	"time"
+	"unsafe"
 
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/cgroup"
@@ -158,10 +159,20 @@ func (riss *rawItemsShards) Len() int {
 	return n
 }
 
-type rawItemsShard struct {
-	mu            sync.Mutex
-	ibs           []*inmemoryBlock
+type rawItemsShardNopad struct {
+	// Put lastFlushTime to the top in order to avoid unaligned memory access on 32-bit architectures
 	lastFlushTime uint64
+
+	mu  sync.Mutex
+	ibs []*inmemoryBlock
+}
+
+type rawItemsShard struct {
+	rawItemsShardNopad
+
+	// The padding prevents false sharing on widespread platforms with
+	// 128 mod (cache line size) = 0 .
+	_ [128 - unsafe.Sizeof(rawItemsShardNopad{})%128]byte
 }
 
 func (ris *rawItemsShard) Len() int {
diff --git a/lib/storage/partition.go b/lib/storage/partition.go
index 85568ee95b..9345abe892 100644
--- a/lib/storage/partition.go
+++ b/lib/storage/partition.go
@@ -445,10 +445,20 @@ func (rrss *rawRowsShards) Len() int {
 	return n
 }
 
-type rawRowsShard struct {
-	mu            sync.Mutex
-	rows          []rawRow
+type rawRowsShardNopad struct {
+	// Put lastFlushTime to the top in order to avoid unaligned memory access on 32-bit architectures
 	lastFlushTime uint64
+
+	mu   sync.Mutex
+	rows []rawRow
+}
+
+type rawRowsShard struct {
+	rawRowsShardNopad
+
+	// The padding prevents false sharing on widespread platforms with
+	// 128 mod (cache line size) = 0 .
+	_ [128 - unsafe.Sizeof(rawRowsShardNopad{})%128]byte
 }
 
 func (rrs *rawRowsShard) Len() int {