Include internal sds fragmentation in MEMORY reporting (#7864)

The MEMORY command is used for debugging memory usage, so it should include internal
fragmentation, same as used_memory

src/object.c

@@ -787,7 +787,7 @@ size_t objectComputeSize(robj *o, size_t sample_size) {
         if(o->encoding == OBJ_ENCODING_INT) {
             asize = sizeof(*o);
         } else if(o->encoding == OBJ_ENCODING_RAW) {
-            asize = sdsAllocSize(o->ptr)+sizeof(*o);
+            asize = sdsZmallocSize(o->ptr)+sizeof(*o);
         } else if(o->encoding == OBJ_ENCODING_EMBSTR) {
             asize = sdslen(o->ptr)+2+sizeof(*o);
         } else {
@@ -815,7 +815,7 @@ size_t objectComputeSize(robj *o, size_t sample_size) {
             asize = sizeof(*o)+sizeof(dict)+(sizeof(struct dictEntry*)*dictSlots(d));
             while((de = dictNext(di)) != NULL && samples < sample_size) {
                 ele = dictGetKey(de);
-                elesize += sizeof(struct dictEntry) + sdsAllocSize(ele);
+                elesize += sizeof(struct dictEntry) + sdsZmallocSize(ele);
                 samples++;
             }
             dictReleaseIterator(di);
@@ -837,7 +837,7 @@ size_t objectComputeSize(robj *o, size_t sample_size) {
                     (sizeof(struct dictEntry*)*dictSlots(d))+
                     zmalloc_size(zsl->header);
             while(znode != NULL && samples < sample_size) {
-                elesize += sdsAllocSize(znode->ele);
+                elesize += sdsZmallocSize(znode->ele);
                 elesize += sizeof(struct dictEntry) + zmalloc_size(znode);
                 samples++;
                 znode = znode->level[0].forward;
@@ -856,7 +856,7 @@ size_t objectComputeSize(robj *o, size_t sample_size) {
             while((de = dictNext(di)) != NULL && samples < sample_size) {
                 ele = dictGetKey(de);
                 ele2 = dictGetVal(de);
-                elesize += sdsAllocSize(ele) + sdsAllocSize(ele2);
+                elesize += sdsZmallocSize(ele) + sdsZmallocSize(ele2);
                 elesize += sizeof(struct dictEntry);
                 samples++;
             }
@@ -996,7 +996,7 @@ struct redisMemOverhead *getMemoryOverheadData(void) {
 
     mem = 0;
     if (server.aof_state != AOF_OFF) {
-        mem += sdsalloc(server.aof_buf);
+        mem += sdsZmallocSize(server.aof_buf);
         mem += aofRewriteBufferSize();
     }
     mh->aof_buffer = mem;
@@ -1312,7 +1312,7 @@ NULL
             return;
         }
         size_t usage = objectComputeSize(dictGetVal(de),samples);
-        usage += sdsAllocSize(dictGetKey(de));
+        usage += sdsZmallocSize(dictGetKey(de));
         usage += sizeof(dictEntry);
         addReplyLongLong(c,usage);
     } else if (!strcasecmp(c->argv[1]->ptr,"stats") && c->argc == 2) {

src/server.c

@@ -1626,7 +1626,7 @@ int clientsCronTrackClientsMemUsage(client *c) {
     size_t mem = 0;
     int type = getClientType(c);
     mem += getClientOutputBufferMemoryUsage(c);
-    mem += sdsAllocSize(c->querybuf);
+    mem += sdsZmallocSize(c->querybuf);
     mem += sizeof(client);
     /* Now that we have the memory used by the client, remove the old
      * value from the old category, and add it back. */