diff --git a/src/ivfflat.h b/src/ivfflat.h
index 8fbaad7..21a9f08 100644
--- a/src/ivfflat.h
+++ b/src/ivfflat.h
@@ -10,6 +10,10 @@
 #include "utils/tuplesort.h"
 #include "vector.h"
 
+#ifdef IVFFLAT_BENCH
+#include "portability/instr_time.h"
+#endif
+
 #if PG_VERSION_NUM < 90600
 #error "Requires PostgreSQL 9.6+"
 #endif
@@ -43,6 +47,21 @@
 #define IvfflatPageGetOpaque(page)	((IvfflatPageOpaque) PageGetSpecialPointer(page))
 #define IvfflatPageGetMeta(page)	((IvfflatMetaPageData *) PageGetContents(page))
 
+#ifdef IVFFLAT_BENCH
+#define Bench(name, code) \
+	do { \
+		instr_time	start; \
+		instr_time	duration; \
+		INSTR_TIME_SET_CURRENT(start); \
+		(code); \
+		INSTR_TIME_SET_CURRENT(duration); \
+		INSTR_TIME_SUBTRACT(duration, start); \
+		elog(INFO, "%s: %f ms", name, INSTR_TIME_GET_MILLISEC(duration)); \
+	} while (0)
+#else
+#define Bench(name, code) (code)
+#endif
+
 #if PG_VERSION_NUM < 100000
 #define ItemPointerGetBlockNumberNoCheck ItemPointerGetBlockNumber
 #define ItemPointerGetOffsetNumberNoCheck ItemPointerGetOffsetNumber
diff --git a/src/ivfscan.c b/src/ivfscan.c
index 1ab1fc4..0553a32 100644
--- a/src/ivfscan.c
+++ b/src/ivfscan.c
@@ -154,6 +154,8 @@ GetScanItems(IndexScanDesc scan, Datum value)
 			UnlockReleaseBuffer(buf);
 		}
 	}
+
+	tuplesort_performsort(so->sortstate);
 }
 
 /*
@@ -269,9 +271,8 @@ ivfflatgettuple(IndexScanDesc scan, ScanDirection dir)
 				return false;
 		}
 
-		GetScanLists(scan, value);
-		GetScanItems(scan, value);
-		tuplesort_performsort(so->sortstate);
+		Bench("GetScanLists", GetScanLists(scan, value));
+		Bench("GetScanItems", GetScanItems(scan, value));
 		so->first = false;
 
 		/* Clean up if we allocated a new value */