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 Apr 06, 2026 00:46:27)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2727629	99	155	60,81	cyclictest	2966953	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:41:25	0
2727629	99	147	106,20	cyclictest	3038750	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:38:44	0
2727629	99	147	106,20	cyclictest	3038750	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:38:44	0
2727633	99	137	123,7	cyclictest	2954355	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:47:06	1
2727633	99	137	123,7	cyclictest	2954355	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:47:06	1
2727629	99	130	82,29	cyclictest	2789415	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:26:09	0
2727629	99	130	82,29	cyclictest	2789415	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:26:08	0
2727629	99	126	61,41	cyclictest	2907027	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:51:23	0
2727647	99	124	114,5	cyclictest	2920460	-21	ssh	23:01:29	4
2727629	99	122	1,108	cyclictest	2873063	-21	missed_timers	22:25:24	0
2727629	99	120	95,18	cyclictest	2938903	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:16:33	0
2727629	99	118	70,28	cyclictest	3015239	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:20:36	0
2842202	2	115	0,5	sleep0	0	-21	swapper/0	22:01:25	0
2727629	99	115	87,20	cyclictest	2839670	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:06:15	0
2727633	99	112	63,17	cyclictest	2954355	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:31:37	1
2727633	99	109	95,7	cyclictest	2808507	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:36:10	1
2727629	99	109	2,90	cyclictest	0	-21	swapper/0	00:25:05	0
2727629	99	108	80,21	cyclictest	2769900	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:20:28	0
2727629	99	108	80,21	cyclictest	2769900	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:20:28	0
2727629	99	108	75,20	cyclictest	2708388	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	19:20:33	0
2727629	99	108	65,25	cyclictest	0	-21	swapper/0	22:45:35	0
2727651	99	106	100,3	cyclictest	0	-21	swapper/5	00:38:44	5
2727651	99	106	100,3	cyclictest	0	-21	swapper/5	00:38:44	5
2727629	99	106	48,39	cyclictest	2954355	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	00:07:01	0
2727629	99	104	78,20	cyclictest	2974268	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:52:32	0
2727629	99	104	77,20	cyclictest	2764180	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:10:37	0
2727629	99	103	77,19	cyclictest	2747555	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:20:59	0
2727629	99	103	77,19	cyclictest	2747555	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:20:59	0
2727629	99	103	62,28	cyclictest	2839670	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:18:30	0
2727633	99	102	89,7	cyclictest	2735003	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	19:30:56	1
2727629	99	101	64,30	cyclictest	2881779	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:36:19	0
2727633	99	100	53,14	cyclictest	2918757	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:39:12	1
2727629	99	99	76,17	cyclictest	2938903	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:36:36	0
2727629	99	99	74,19	cyclictest	2822754	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:51:14	0
2727629	99	99	74,18	cyclictest	2764180	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:00:20	0
2727629	99	99	55,37	cyclictest	2796309	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:55:09	0
2727629	99	99	15,72	cyclictest	2789415	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:30:16	0
2727629	99	98	75,20	cyclictest	2796309	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:30:37	0
2727629	99	98	72,19	cyclictest	3007197	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	00:12:34	0
2727629	99	98	71,20	cyclictest	2769900	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:55:28	0
2727629	99	98	71,20	cyclictest	2769900	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:55:28	0
2951233	2	97	0,3	sleep0	2951226	-21	systemd-userwor	23:25:24	0
2727633	99	97	83,7	cyclictest	2981936	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:25:24	1
2727629	99	97	59,24	cyclictest	0	-21	swapper/0	23:05:33	0
2727629	99	97	35,41	cyclictest	2796309	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:40:41	0
2727633	99	96	81,9	cyclictest	2890897	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:56:27	1
2727629	99	96	73,16	cyclictest	2743345	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	19:50:57	0
2727629	99	96	70,19	cyclictest	2739401	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	19:38:35	0
2727629	99	96	64,20	cyclictest	0	-21	swapper/0	00:00:25	0
2727647	99	95	88,3	cyclictest	0	-21	swapper/4	19:45:56	4
2727629	99	95	67,20	cyclictest	2954355	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:55:34	0
2727629	99	95	67,20	cyclictest	2907027	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:59:45	0
2727651	99	94	88,3	cyclictest	0	-21	swapper/5	23:16:33	5
2727633	99	94	81,7	cyclictest	2926652	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:08:35	1
2727633	99	94	77,10	cyclictest	2890897	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:20:34	1
2727629	99	93	1,80	cyclictest	0	-21	swapper/0	22:10:15	0
2727629	99	93	1,3	cyclictest	0	-21	swapper/0	23:45:37	0
2727629	99	93	1,3	cyclictest	0	-21	swapper/0	23:45:36	0
2727629	99	92	67,18	cyclictest	2918757	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:03:01	0
2994828	2	91	0,3	sleep1	22	-21	rcuc/1	23:59:30	1
2727629	99	91	67,18	cyclictest	2890897	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:11:32	0
2727651	99	89	83,3	cyclictest	0	-21	swapper/5	23:41:37	5
2727633	99	89	76,7	cyclictest	2747555	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:35:34	1
2727629	99	89	66,20	cyclictest	2938903	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:24:32	0
2727629	99	89	63,19	cyclictest	2881779	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:41:39	0
2727629	99	89	63,19	cyclictest	2769900	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:05:36	0
2727629	99	89	63,19	cyclictest	2747555	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:05:58	0
2727629	99	89	60,21	cyclictest	2796309	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:20:16	0
2727651	99	88	81,3	cyclictest	0	-21	swapper/5	22:06:15	5
2727647	99	88	82,3	cyclictest	0	-21	swapper/4	20:13:44	4
2727647	99	88	82,3	cyclictest	0	-21	swapper/4	20:13:44	4
2727647	99	88	72,8	cyclictest	2792048	-21	ssh	21:23:27	4
2727647	99	88	72,8	cyclictest	2792048	-21	ssh	21:23:27	4
2727633	99	88	73,8	cyclictest	2796309	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:20:43	1
2727629	99	88	64,18	cyclictest	2764180	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	20:48:36	0
2727629	99	88	62,19	cyclictest	2764180	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:19:18	0
2727633	99	87	76,5	cyclictest	2954355	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:50:06	1
2727633	99	87	73,7	cyclictest	2907027	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:53:30	1
2727629	99	87	61,19	cyclictest	2756187	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:30:42	0
2727629	99	87	61,19	cyclictest	2743345	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	20:04:35	0
2840163	2	86	0,6	sleep4	2840162	-21	ssh	22:00:23	4
2727642	99	86	72,7	cyclictest	2881779	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:40:23	3
2727633	99	86	74,6	cyclictest	2938903	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:16:52	1
2727633	99	86	74,6	cyclictest	2796309	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:55:47	1
2727633	99	86	72,7	cyclictest	2890897	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:41:58	1
2727629	99	86	61,18	cyclictest	2747555	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:35:16	0
2727629	99	86	60,19	cyclictest	2731346	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	19:25:41	0
2727629	99	86	1,46	cyclictest	13	-21	ksoftirqd/0	21:35:18	0
2727633	99	85	71,7	cyclictest	2855805	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:26:21	1
2727629	99	85	61,18	cyclictest	2756187	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:29:42	0
2727629	99	85	58,19	cyclictest	2747555	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:11:00	0
2727629	99	85	58,19	cyclictest	2747555	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:11:00	0
2727642	99	84	50,8	cyclictest	2735003	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	19:34:06	3
2727633	99	84	71,7	cyclictest	2881779	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:46:30	1
2727633	99	84	59,9	cyclictest	2822754	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:00:15	1
2727629	99	84	57,18	cyclictest	2756187	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:41:09	0
2727629	99	84	1,3	cyclictest	0	-21	swapper/0	19:45:42	0
2727647	99	83	76,3	cyclictest	0	-21	swapper/4	23:13:35	4
2727647	99	83	75,4	cyclictest	0	-21	swapper/4	21:45:32	4
2727633	99	83	71,6	cyclictest	2954355	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	00:22:10	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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