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 Sun Mar 22, 2026 12:46:30)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1145884	2	2557	2536,9	sleep1	1128620	-21	kworker/1:3+events@ dbs_work_handler	07:05:29	1
1146960	99	141	102,31	cyclictest	1227524	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	09:35:34	0
1232094	2	126	0,6	sleep3	0	-21	swapper/3	09:39:37	3
1146960	99	118	95,15	cyclictest	1382540	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:40:09	0
1146960	99	118	61,49	cyclictest	1437922	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	12:35:16	0
1146960	99	117	83,27	cyclictest	1255795	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:11:34	0
1146973	99	112	99,6	cyclictest	1398295	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:50:11	3
1146977	99	111	106,2	cyclictest	0	-21	swapper/4	09:35:35	4
1146960	99	111	87,17	cyclictest	1179011	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	08:29:34	0
1146965	99	110	96,7	cyclictest	1173747	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	08:39:35	1
1146960	99	109	82,7	cyclictest	1148703	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	07:39:24	0
1146965	99	108	96,6	cyclictest	1201642	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	09:59:48	1
1146960	99	108	85,16	cyclictest	1424641	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	12:25:16	0
1146960	99	108	82,7	cyclictest	1164234	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	08:19:06	0
1146960	99	108	82,7	cyclictest	1164234	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	08:19:05	0
1146960	99	107	83,8	cyclictest	1357236	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:26:16	0
1146960	99	107	53,32	cyclictest	1216945	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	09:42:07	0
1146960	99	107	53,32	cyclictest	1216945	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	09:42:07	0
1146973	99	106	92,7	cyclictest	1181257	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	08:49:38	3
1146960	99	106	78,7	cyclictest	1181257	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	08:57:39	0
1146965	99	105	93,6	cyclictest	1158871	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	07:59:28	1
1146960	99	105	58,27	cyclictest	1266526	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	10:07:31	0
1146977	99	104	99,2	cyclictest	0	-21	swapper/4	11:40:08	4
1146960	99	104	77,8	cyclictest	1173747	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	08:24:32	0
1146960	99	104	53,31	cyclictest	1148703	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	07:15:16	0
1146973	99	103	91,6	cyclictest	1294077	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	10:55:03	3
1146973	99	103	89,7	cyclictest	1216945	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	09:47:35	3
1146960	99	103	77,7	cyclictest	1424641	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	12:09:35	0
1146960	99	103	77,7	cyclictest	1424641	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	12:09:34	0
1146973	99	102	87,8	cyclictest	1173747	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	08:34:34	3
1146973	99	102	87,8	cyclictest	1173747	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	08:34:34	3
1146960	99	102	81,7	cyclictest	1216945	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	09:29:43	0
1146977	99	100	87,7	cyclictest	1198833	-21	diskmemload-4	11:26:15	4
1146960	99	100	72,8	cyclictest	1181257	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	08:44:36	0
1146960	99	100	65,15	cyclictest	1302160	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:55:05	0
1146965	99	99	86,7	cyclictest	1255795	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:40:00	1
1146960	99	99	73,7	cyclictest	1302160	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:53:12	0
1146960	99	99	73,6	cyclictest	1294077	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:11:35	0
1146960	99	99	57,19	cyclictest	1294077	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	10:47:44	0
1146977	99	98	88,5	cyclictest	1446815	-21	ssh	12:25:16	4
1146973	99	98	86,6	cyclictest	1158871	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	08:04:29	3
1146977	99	97	85,7	cyclictest	1219146	-21	ssh	09:29:44	4
1146960	99	97	69,8	cyclictest	1294077	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:22:50	0
1146960	99	97	69,8	cyclictest	1294077	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:22:49	0
1146977	99	96	91,2	cyclictest	0	-21	swapper/4	08:29:34	4
1146973	99	96	83,6	cyclictest	1235863	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	10:19:53	3
1146965	99	96	84,6	cyclictest	1181257	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	09:23:00	1
1146965	99	96	82,7	cyclictest	1164234	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	08:15:34	1
1146965	99	96	82,7	cyclictest	1164234	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	08:15:34	1
1146973	99	95	83,6	cyclictest	1302160	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:15:05	3
1146973	99	95	81,7	cyclictest	1285900	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	10:29:57	3
1146973	99	94	82,6	cyclictest	1325724	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:30:58	3
1146973	99	94	82,6	cyclictest	1148703	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	07:14:17	3
1146973	99	94	81,7	cyclictest	1325724	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:20:10	3
1146973	99	94	81,7	cyclictest	1325724	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:20:09	3
1146973	99	94	71,7	cyclictest	1191893	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	09:33:40	3
1146965	99	94	80,7	cyclictest	1158871	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	07:41:50	1
1146977	99	93	87,3	cyclictest	0	-21	swapper/4	10:11:35	4
1146973	99	93	80,7	cyclictest	1173747	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	08:19:32	3
1146973	99	93	80,7	cyclictest	1173747	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	08:19:32	3
1146973	99	92	62,7	cyclictest	1398295	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	12:20:00	3
1146973	99	92	62,7	cyclictest	1398295	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	12:20:00	3
1146973	99	92	60,9	cyclictest	1255795	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	09:58:37	3
1146960	99	92	57,32	cyclictest	1382540	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:54:19	0
1146977	99	91	86,2	cyclictest	0	-21	swapper/4	08:19:05	4
1146977	99	91	86,2	cyclictest	0	-21	swapper/4	08:19:05	4
1146973	99	91	75,8	cyclictest	1398295	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	12:24:48	3
1146965	99	91	79,6	cyclictest	1398295	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	12:36:01	1
1146977	99	90	85,2	cyclictest	0	-21	swapper/4	07:39:24	4
1146973	99	90	77,7	cyclictest	1181257	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	09:01:42	3
1146973	99	90	77,6	cyclictest	1185085	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	08:54:39	3
1201322	2	89	0,4	sleep4	0	-21	swapper/4	09:15:29	4
1146973	99	89	77,6	cyclictest	1390916	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	12:06:35	3
1146973	99	89	77,6	cyclictest	1390916	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	12:06:34	3
1146973	99	89	75,7	cyclictest	1398295	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	12:01:01	3
1146973	99	89	75,7	cyclictest	1398295	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	12:01:00	3
1146973	99	89	74,8	cyclictest	1398295	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	12:30:17	3
1146965	99	89	77,6	cyclictest	1201642	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	09:43:35	1
1146965	99	89	77,6	cyclictest	1201642	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	09:43:34	1
1146965	99	89	75,7	cyclictest	1294077	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	10:46:08	1
1146965	99	89	53,7	cyclictest	1235863	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	10:12:28	1
1146977	99	88	72,10	cyclictest	1366377	-21	ssh	11:22:50	4
1146977	99	88	72,10	cyclictest	1366377	-21	ssh	11:22:49	4
1146973	99	88	75,7	cyclictest	1148703	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	07:24:17	3
1146973	99	88	75,7	cyclictest	1148703	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	07:24:17	3
1146965	99	88	75,7	cyclictest	1437922	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	12:26:34	1
1146977	99	87	76,6	cyclictest	1408289	-21	ssh	11:55:19	4
1146973	99	87	73,7	cyclictest	1367184	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:37:28	3
1146973	99	87	73,7	cyclictest	1216945	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	09:42:26	3
1146973	99	87	73,7	cyclictest	1216945	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	09:42:25	3
1146960	99	87	36,29	cyclictest	1367184	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:36:00	0
1146983	99	86	78,4	cyclictest	0	-21	swapper/5	11:35:07	5
1146977	99	86	81,2	cyclictest	0	-21	swapper/4	08:57:39	4
1146977	99	86	80,3	cyclictest	0	-21	swapper/4	12:09:35	4
1146977	99	86	80,3	cyclictest	0	-21	swapper/4	12:09:35	4
1146977	99	86	80,3	cyclictest	0	-21	swapper/4	08:24:32	4
1146965	99	86	73,7	cyclictest	1325724	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:30:54	1
1146965	99	86	73,7	cyclictest	1325724	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:20:08	1
1146965	99	86	73,7	cyclictest	1325724	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:20:08	1
1146965	99	86	60,9	cyclictest	1302160	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:05:26	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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