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 Mar 30, 2026 00:46:37)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2533096	99	126	91,15	cyclictest	2558953	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	20:12:18	0
2533100	99	123	109,7	cyclictest	2689254	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:47:51	1
2533100	99	123	109,7	cyclictest	2689254	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:47:51	1
2533116	99	114	109,2	cyclictest	0	-21	swapper/5	19:47:04	5
2533107	99	110	64,17	cyclictest	2635577	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:02:01	3
2533096	99	110	6,80	cyclictest	13	-21	ksoftirqd/0	00:25:40	0
2533096	99	110	6,80	cyclictest	13	-21	ksoftirqd/0	00:25:40	0
2533096	99	109	70,18	cyclictest	2740079	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:30:16	0
2533100	99	108	94,7	cyclictest	2698678	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	00:17:34	1
2533100	99	108	94,7	cyclictest	2698678	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	00:17:33	1
2533096	99	108	71,19	cyclictest	2584277	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:27:26	0
2533100	99	107	92,8	cyclictest	2575326	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:07:24	1
2533107	99	106	92,7	cyclictest	2790067	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:53:00	3
2533100	99	106	76,7	cyclictest	2674725	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:06:01	1
2533100	99	105	92,6	cyclictest	2551654	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:22:18	1
2533107	99	104	89,8	cyclictest	2635577	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:52:31	3
2533096	99	103	27,41	cyclictest	2698678	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:42:49	0
2533100	99	101	88,6	cyclictest	2527346	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	19:21:54	1
2533100	99	100	87,6	cyclictest	2543495	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:02:15	1
2533100	99	100	82,6	cyclictest	2740079	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:47:59	1
2533096	99	100	1,88	cyclictest	0	-21	swapper/0	00:20:01	0
2533096	99	100	1,88	cyclictest	0	-21	swapper/0	00:20:00	0
2533107	99	99	84,8	cyclictest	2689254	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:55:34	3
2533096	99	99	52,28	cyclictest	2744313	-21	timerwakeupswit	23:15:44	0
2533096	99	98	25,59	cyclictest	2674725	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:23:33	0
2533096	99	98	25,59	cyclictest	2674725	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:23:33	0
2533116	99	97	92,2	cyclictest	0	-21	swapper/5	19:16:54	5
2533116	99	97	92,2	cyclictest	0	-21	swapper/5	19:16:53	5
2533100	99	97	83,7	cyclictest	2831599	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:37:33	1
2533107	99	96	82,7	cyclictest	2740079	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:42:58	3
2533096	99	96	54,33	cyclictest	2674725	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:25:11	0
2533096	99	96	54,33	cyclictest	2674725	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:25:11	0
2533107	99	95	80,8	cyclictest	2573168	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:51:12	3
2533107	99	95	80,8	cyclictest	2573168	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:51:12	3
2533116	99	94	88,2	cyclictest	0	-21	swapper/5	00:08:41	5
2533107	99	93	79,7	cyclictest	2831599	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:25:36	3
2533107	99	93	79,7	cyclictest	2831599	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:25:35	3
2533100	99	93	81,6	cyclictest	2740079	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:27:56	1
2533100	99	93	81,6	cyclictest	2740079	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:27:56	1
2533100	99	93	79,7	cyclictest	2790067	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:51:47	1
2533107	99	92	77,8	cyclictest	2602116	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:37:28	3
2533107	99	92	77,8	cyclictest	2551654	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:17:19	3
2533107	99	92	77,7	cyclictest	2740079	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:46:32	3
2533104	99	92	78,7	cyclictest	2731740	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:07:54	2
2533100	99	92	62,7	cyclictest	2602116	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:43:26	1
2533096	99	92	33,40	cyclictest	15	-21	rcuc/0	22:45:45	0
2533096	99	92	33,40	cyclictest	15	-21	rcuc/0	22:45:45	0
2533116	99	91	85,3	cyclictest	0	-21	swapper/5	21:42:29	5
2533116	99	91	85,3	cyclictest	0	-21	swapper/5	19:26:54	5
2533107	99	91	76,7	cyclictest	2674725	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:31:01	3
2533104	99	91	78,6	cyclictest	2740079	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:32:55	2
2533096	99	91	68,12	cyclictest	690	50	irq/528-eth0-Tx	19:35:29	0
2533096	99	91	27,41	cyclictest	2543495	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:06:04	0
2533096	99	91	27,41	cyclictest	2543495	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:06:03	0
2533107	99	90	76,6	cyclictest	2698678	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:12:54	3
2533107	99	90	61,7	cyclictest	2698678	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:50:33	3
2533096	99	90	14,45	cyclictest	68	-21	kcompactd0	00:33:11	0
2533100	99	89	75,7	cyclictest	2577909	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:00:24	1
2533116	99	88	82,3	cyclictest	0	-21	swapper/5	20:38:10	5
2533107	99	88	64,9	cyclictest	2698678	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:16:11	3
2533100	99	88	75,7	cyclictest	2584277	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:45:43	1
2533096	99	88	23,26	cyclictest	13	-21	ksoftirqd/0	20:30:29	0
2533112	99	87	81,3	cyclictest	0	-21	swapper/4	19:45:35	4
2533112	99	87	78,5	cyclictest	2622550	-21	ssh	21:42:29	4
2533112	99	87	77,5	cyclictest	0	-21	swapper/4	21:20:35	4
2533107	99	87	71,8	cyclictest	2551654	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:20:06	3
2533104	99	87	73,7	cyclictest	2551654	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	19:57:06	2
2533100	99	87	74,7	cyclictest	2819716	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:25:08	1
2533100	99	87	74,7	cyclictest	2819716	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:25:08	1
2533100	99	87	72,8	cyclictest	2698678	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:00:25	1
2533096	99	87	27,5	cyclictest	2794680	-21	ssh	23:55:12	0
2716755	2	86	0,3	sleep0	13	-21	ksoftirqd/0	22:55:15	0
2533107	99	86	64,8	cyclictest	2674725	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:31:33	3
2533100	99	86	74,6	cyclictest	2667179	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:29:34	1
2533100	99	86	56,7	cyclictest	2698678	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	00:04:31	1
2533096	99	86	62,16	cyclictest	2689254	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:40:25	0
2533096	99	86	62,16	cyclictest	2689254	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:40:25	0
2533096	99	86	25,5	cyclictest	2789153	-21	ntpq	23:50:28	0
2533096	99	86	22,51	cyclictest	2802768	-21	sort	00:00:42	0
2727741	2	85	0,5	sleep2	29	-21	rcuc/2	23:03:35	2
2533107	99	85	71,7	cyclictest	2642335	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:22:34	3
2533100	99	85	73,6	cyclictest	2674725	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:51:20	1
2533100	99	85	72,7	cyclictest	2565159	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:45:50	1
2533100	99	85	71,7	cyclictest	2549039	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	19:52:38	1
2533100	99	85	71,7	cyclictest	2549039	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	19:52:37	1
2533100	99	85	62,7	cyclictest	2532662	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	19:16:58	1
2533100	99	85	62,7	cyclictest	2532662	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	19:16:57	1
2533096	99	85	60,16	cyclictest	2558953	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	20:20:18	0
2533096	99	85	38,14	cyclictest	13	-21	ksoftirqd/0	21:39:36	0
2533096	99	85	32,17	cyclictest	13	-21	ksoftirqd/0	00:10:28	0
2533116	99	84	78,3	cyclictest	0	-21	swapper/5	21:58:11	5
2533116	99	84	78,3	cyclictest	0	-21	swapper/5	20:29:40	5
2533107	99	84	71,6	cyclictest	2635577	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:55:05	3
2533100	99	84	70,7	cyclictest	2819716	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:31:35	1
2533096	99	84	30,32	cyclictest	0	-21	swapper/0	00:20:33	0
2533096	99	84	25,26	cyclictest	13	-21	ksoftirqd/0	00:05:42	0
2533096	99	84	17,16	cyclictest	15	-21	rcuc/0	23:45:47	0
2533116	99	83	78,2	cyclictest	0	-21	swapper/5	19:38:35	5
2533107	99	83	70,7	cyclictest	2804679	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	00:05:14	3
2533107	99	83	69,7	cyclictest	2689254	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:37:07	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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