diff --git a/src/server.h b/src/server.h
index cff87e10f..dbb1b9621 100644
--- a/src/server.h
+++ b/src/server.h
@@ -2071,7 +2071,8 @@ struct redisServer {
     char *locale_collate;
 };
 
-#define MAX_KEYS_BUFFER 256
+/* we use 6 so that all getKeyResult fits a cacheline */
+#define MAX_KEYS_BUFFER 6
 
 typedef struct {
     int pos; /* The position of the key within the client array */
@@ -2084,12 +2085,12 @@ typedef struct {
  * for returning channel information.
  */
 typedef struct {
+    int numkeys;                                 /* Number of key indices return */
+    int size;                                    /* Available array size */
     keyReference keysbuf[MAX_KEYS_BUFFER];       /* Pre-allocated buffer, to save heap allocations */
     keyReference *keys;                          /* Key indices array, points to keysbuf or heap */
-    int numkeys;                        /* Number of key indices return */
-    int size;                           /* Available array size */
 } getKeysResult;
-#define GETKEYS_RESULT_INIT { {{0}}, NULL, 0, MAX_KEYS_BUFFER }
+#define GETKEYS_RESULT_INIT { 0, MAX_KEYS_BUFFER, {{0}}, NULL }
 
 /* Key specs definitions.
  *