OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #3, slot #4

Click here to display the system's profile data or here to proceed to next system.

Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.
Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance

Characteristics of the 100 highest latencies:

System rack3slot4.osadl.org (updated Mon Feb 02, 2026 00:46:44)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1040897	2	3191	3174,7	sleep2	1021249	-21	kworker/2:0+events@ dbs_work_handler	19:05:36	2
1040897	2	3191	3174,7	sleep2	1021249	-21	kworker/2:0+events@ dbs_work_handler	19:05:36	2
1041900	99	142	59,55	cyclictest	1105221	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:46:28	0
1041940	99	121	116,2	cyclictest	0	-21	swapper/5	23:58:23	5
1041911	99	112	99,6	cyclictest	1045583	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	19:20:59	2
1041911	99	112	99,6	cyclictest	1045583	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	19:20:58	2
1041923	99	108	95,6	cyclictest	1246283	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:26:18	3
1041923	99	106	60,16	cyclictest	1272578	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:59:23	3
1041900	99	105	56,29	cyclictest	1222524	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:35:39	0
1041923	99	103	88,7	cyclictest	1067753	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:41:07	3
1041923	99	103	88,7	cyclictest	1067753	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:41:06	3
1041940	99	102	96,3	cyclictest	0	-21	swapper/5	19:10:58	5
1041911	99	102	90,6	cyclictest	1163814	-21	kworker/u12:4+events_unbound@ flush_memcg_stats_dwork	22:26:14	2
1041940	99	99	93,3	cyclictest	0	-21	swapper/5	22:43:29	5
1041940	99	99	92,3	cyclictest	0	-21	swapper/5	19:17:35	5
1041900	99	99	8,67	cyclictest	650	-21	jbd2/mmcblk1p3-	21:40:22	0
1041900	99	99	8,67	cyclictest	650	-21	jbd2/mmcblk1p3-	21:40:22	0
1041940	99	96	90,3	cyclictest	0	-21	swapper/5	20:51:07	5
1041911	99	95	81,8	cyclictest	1163814	-21	kworker/u12:4+events_unbound@ flush_memcg_stats_dwork	22:20:14	2
1041225	2	95	76,10	sleep5	0	-21	swapper/5	19:05:40	5
1041225	2	95	76,10	sleep5	0	-21	swapper/5	19:05:39	5
1314044	2	94	0,4	sleep4	1314043	-21	ssh	00:10:45	4
1185804	2	94	0,16	sleep3	37	-21	ksoftirqd/3	22:29:27	3
1041940	99	93	86,3	cyclictest	0	-21	swapper/5	21:49:34	5
1041900	99	92	8,69	cyclictest	0	-21	swapper/0	19:15:12	0
1041940	99	91	85,3	cyclictest	0	-21	swapper/5	22:51:17	5
1041911	99	91	76,8	cyclictest	1294608	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	00:05:27	2
1041900	99	91	9,68	cyclictest	1218758	-21	if_eth1	22:55:23	0
1041940	99	90	84,3	cyclictest	0	-21	swapper/5	21:01:07	5
1041900	99	90	39,28	cyclictest	13	-21	ksoftirqd/0	23:40:30	0
1041900	99	90	10,46	cyclictest	13301	-21	runrttasks	21:59:29	0
1041940	99	89	82,3	cyclictest	0	-21	swapper/5	00:38:53	5
1041940	99	89	82,3	cyclictest	0	-21	swapper/5	00:38:53	5
1041911	99	89	77,6	cyclictest	1105221	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:36:09	2
1041911	99	89	77,6	cyclictest	1105221	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:36:08	2
1041900	99	89	59,16	cyclictest	1079978	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:31:07	0
1041940	99	88	81,3	cyclictest	0	-21	swapper/5	23:21:34	5
1041900	99	88	9,50	cyclictest	1286434	-21	ssh	23:49:49	0
1041900	99	88	9,50	cyclictest	1286434	-21	ssh	23:49:48	0
1041900	99	88	32,41	cyclictest	13	-21	ksoftirqd/0	22:53:36	0
1041911	99	87	74,6	cyclictest	1201685	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:57:06	2
1041911	99	87	73,7	cyclictest	1329498	-21	kworker/u12:4+events_unbound@ flush_memcg_stats_dwork	00:38:34	2
1041911	99	87	73,7	cyclictest	1329498	-21	kworker/u12:4+events_unbound@ flush_memcg_stats_dwork	00:38:34	2
1041911	99	87	68,7	cyclictest	1141949	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:16:14	2
1041905	99	87	74,7	cyclictest	1294608	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	00:08:44	1
1041900	99	87	9,44	cyclictest	1152363	-21	kworker/u12:2+rpciod@ rpc_async_schedule	22:20:18	0
1041940	99	86	78,4	cyclictest	0	-21	swapper/5	00:33:52	5
1041905	99	86	72,7	cyclictest	1183786	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:15:35	1
1041905	99	86	72,7	cyclictest	1183786	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:15:35	1
1041911	99	85	73,6	cyclictest	1122882	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:44:34	2
1041911	99	85	73,6	cyclictest	1122882	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:44:33	2
1041911	99	85	71,7	cyclictest	1329498	-21	kworker/u12:4+events_unbound@ flush_memcg_stats_dwork	00:34:22	2
1041923	99	84	72,6	cyclictest	1105221	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:53:33	3
1041905	99	84	72,6	cyclictest	1326841	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	00:29:35	1
1041900	99	84	8,58	cyclictest	0	-21	swapper/0	22:08:37	0
1041900	99	84	30,7	cyclictest	1230587	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:15:09	0
1041900	99	84	30,7	cyclictest	1230587	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:15:09	0
1041940	99	83	77,3	cyclictest	0	-21	swapper/5	20:40:39	5
1041940	99	83	77,3	cyclictest	0	-21	swapper/5	20:40:38	5
1041900	99	83	68,8	cyclictest	1272578	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:58:23	0
1040837	2	83	53,21	sleep4	0	-21	swapper/4	19:05:33	4
1040837	2	83	53,21	sleep4	0	-21	swapper/4	19:05:32	4
1041940	99	82	76,3	cyclictest	0	-21	swapper/5	21:27:41	5
1041940	99	82	75,3	cyclictest	0	-21	swapper/5	22:55:34	5
1041911	99	82	69,7	cyclictest	1079978	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:07:34	2
1041905	99	82	69,7	cyclictest	1141949	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:06:13	1
1041905	99	82	69,7	cyclictest	1091348	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:21:09	1
1041905	99	82	66,9	cyclictest	1246283	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:25:34	1
1041900	99	82	7,70	cyclictest	0	-21	swapper/0	00:10:15	0
1041940	99	81	74,3	cyclictest	0	-21	swapper/5	22:05:33	5
1041923	99	81	52,8	cyclictest	1097703	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:16:39	3
1041911	99	81	69,6	cyclictest	1067753	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:35:36	2
1041911	99	81	67,7	cyclictest	1222524	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:36:02	2
1041911	99	81	67,7	cyclictest	1183786	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:15:19	2
1041911	99	81	67,7	cyclictest	1183786	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:15:18	2
1041911	99	81	67,7	cyclictest	1045583	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	20:09:35	2
1041900	99	81	65,7	cyclictest	1064421	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	20:10:31	0
1041900	99	81	65,7	cyclictest	1064421	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	20:10:31	0
1041923	99	80	68,6	cyclictest	1246283	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:47:10	3
1041923	99	80	68,6	cyclictest	1246283	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:47:10	3
1041923	99	80	67,7	cyclictest	1152363	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:23:35	3
1041923	99	80	58,9	cyclictest	1222524	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:23:08	3
1041923	99	80	50,7	cyclictest	1222524	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:19:00	3
1041911	99	80	66,7	cyclictest	1183786	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:50:39	2
1041911	99	80	64,10	cyclictest	1246283	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:25:26	2
1041900	99	80	8,45	cyclictest	0	-21	swapper/0	00:33:46	0
1041940	99	79	73,3	cyclictest	0	-21	swapper/5	20:45:58	5
1041940	99	79	73,3	cyclictest	0	-21	swapper/5	00:13:35	5
1041911	99	79	66,7	cyclictest	1272578	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	00:02:44	2
1041911	99	79	65,7	cyclictest	1191847	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:35:18	2
1041911	99	79	65,7	cyclictest	1079978	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:45:33	2
1041911	99	79	57,8	cyclictest	1272578	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:54:57	2
1041911	99	79	57,8	cyclictest	1272578	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:54:57	2
1041900	99	79	9,53	cyclictest	0	-21	swapper/0	00:21:35	0
1041900	99	79	9,52	cyclictest	0	-21	swapper/0	21:50:46	0
1041900	99	79	64,7	cyclictest	1045583	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	19:29:35	0
1041940	99	78	72,3	cyclictest	0	-21	swapper/5	19:50:38	5
1041940	99	78	71,3	cyclictest	0	-21	swapper/5	19:46:03	5
1041923	99	78	65,7	cyclictest	1183786	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:46:15	3
1041923	99	78	64,7	cyclictest	1045583	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	20:05:34	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17