diff --git a/src/zmalloc.c b/src/zmalloc.c
index fd8bb6938..48f4b1e99 100644
--- a/src/zmalloc.c
+++ b/src/zmalloc.c
@@ -396,6 +396,18 @@ size_t zmalloc_get_smap_bytes_by_field(char *field, long pid) {
 }
 #else
 size_t zmalloc_get_smap_bytes_by_field(char *field, long pid) {
+#if defined(__APPLE__)
+    struct proc_regioninfo pri;
+    if (proc_pidinfo(pid, PROC_PIDREGIONINFO, 0, &pri, PROC_PIDREGIONINFO_SIZE) ==
+	PROC_PIDREGIONINFO_SIZE) {
+	if (!strcmp(field, "Private_Dirty")) {
+            return (size_t)pri.pri_pages_dirtied * 4096;
+	} else if (!strcmp(field, "Rss")) {
+            return (size_t)pri.pri_pages_resident * 4096;
+	}
+    }
+    return 0;
+#endif
     ((void) field);
     ((void) pid);
     return 0;
diff --git a/src/zmalloc.h b/src/zmalloc.h
index 6fb19b046..4aa33509d 100644
--- a/src/zmalloc.h
+++ b/src/zmalloc.h
@@ -57,6 +57,7 @@
 
 #elif defined(__APPLE__)
 #include <malloc/malloc.h>
+#include <libproc.h>
 #define HAVE_MALLOC_SIZE 1
 #define zmalloc_size(p) malloc_size(p)
 #endif