should be it

external/duckdb/benchmark/micro/window/mode_variable_400.benchmark

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+# name: benchmark/micro/window/mode_variable_400.benchmark
+# description: Measure performance of moving MODE with variable frames
+# group: [window]
+
+name Windowed MODE, Variable 400
+group micro
+subgroup window
+
+require tpch
+
+load
+CALL dbgen(sf=1);
+
+run
+SELECT l_orderkey, l_shipdate, l_linenumber, mode(l_linenumber) over w AS l_mode
+FROM lineitem
+WINDOW w AS (
+    order by l_orderkey, l_shipdate 
+        rows between mod(rowid * 47, 521) preceding and 400 - mod(rowid * 47, 521) following
+)
+QUALIFY l_mode > 1
+ORDER BY ALL
+;
+
+result IIII
+39	1996-12-08	6	3
+707618	1993-12-31	2	2
+707649	1995-11-03	5	2
+707680	1998-02-28	3	2
+1701765	1996-09-01	3	2
+1701767	1994-06-08	2	2
+1701889	1992-10-26	3	2
+1701923	1993-09-29	4	2
+1702080	1993-06-25	5	2
+1702240	1995-03-21	1	2
+1805063	1992-04-30	6	2
+2596640	1995-09-14	3	2
+2596647	1992-05-23	3	2
+2596736	1998-04-17	4	2
+4578916	1997-06-15	4	2
+4578982	1996-09-02	4	2
+5646241	1997-02-12	3	2
+5646278	1993-07-01	4	2
+5646337	1996-11-03	2	2
+5646373	1996-02-14	6	2
+5646403	1998-03-29	4	2
+5646404	1992-07-23	5	2
+5646435	1994-08-16	5	2
+5646531	1992-12-19	5	2
+5646531	1993-04-08	1	2
+5646533	1994-12-02	5	2
+5646535	1998-05-07	3	2
+5646567	1992-10-08	3	2
+5646594	1996-07-20	1	2
+5646597	1996-12-06	1	2
+5646656	1996-06-15	1	2
+5646756	1995-02-12	7	2
+5783364	1992-06-03	6	2
+5783457	1993-02-03	1	2
+5783489	1998-07-18	2	2
+5783524	1996-02-06	2	2
+5783555	1995-03-11	1	2
+5783588	1995-06-15	2	2
+5894308	1995-12-31	1	2
+5894439	1994-09-15	2	2
+5894499	1996-05-19	1	2
+5894532	1992-04-23	4	2
+5894722	1997-03-18	3	2