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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 Tue Jul 14, 2026 00:46:30)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3238972	2	116	0,7	sleep0	0	-21	swapper/0	21:48:19	0
3141367	99	116	103,6	cyclictest	3161155	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:01:53	2
3141367	99	109	91,8	cyclictest	3408202	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:07:37	2
3141367	99	109	89,6	cyclictest	3295249	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:52:23	2
3141367	99	109	89,6	cyclictest	3295249	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:52:22	2
3141367	99	102	89,6	cyclictest	3444650	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:27:39	2
3141356	99	100	78,15	cyclictest	3173300	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:31:59	0
3141356	99	100	28,56	cyclictest	0	-21	swapper/0	23:55:08	0
3141356	99	100	28,56	cyclictest	0	-21	swapper/0	23:55:08	0
3141356	99	99	1,41	cyclictest	3209813	-21	grep	21:25:46	0
3141356	99	99	1,41	cyclictest	3209813	-21	grep	21:25:46	0
3342731	2	97	0,6	sleep3	0	-21	swapper/3	23:05:55	3
3141367	99	97	83,7	cyclictest	3218166	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:52:12	2
3141356	99	97	63,30	cyclictest	3370838	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:49:46	0
3141356	99	97	63,30	cyclictest	3370838	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:49:45	0
3141356	99	97	28,40	cyclictest	15	-21	rcuc/0	22:45:14	0
3141356	99	97	28,40	cyclictest	15	-21	rcuc/0	22:45:13	0
3141356	99	97	16,69	cyclictest	673	50	irq/527-eth0-Tx	22:12:30	0
3141356	99	97	16,69	cyclictest	673	50	irq/527-eth0-Tx	22:12:30	0
3141356	99	95	73,14	cyclictest	3161156	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	19:56:52	0
3141356	99	95	34,7	cyclictest	3361485	-21	ld	23:20:30	0
3141356	99	95	31,7	cyclictest	13	-21	ksoftirqd/0	00:15:31	0
3141356	99	95	2,63	cyclictest	13	-21	ksoftirqd/0	23:05:37	0
3141356	99	92	44,4	cyclictest	14	-21	rcu_preempt	00:00:35	0
3141356	99	92	44,4	cyclictest	14	-21	rcu_preempt	00:00:34	0
3141356	99	92	34,28	cyclictest	13	-21	ksoftirqd/0	22:40:35	0
3141356	99	92	15,13	cyclictest	0	-21	swapper/0	22:25:38	0
3141381	99	91	84,3	cyclictest	0	-21	swapper/5	22:00:28	5
3141356	99	91	24,16	cyclictest	674	50	irq/528-eth0-Tx	00:30:38	0
3141372	99	90	77,6	cyclictest	3312049	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:12:27	3
3141356	99	90	5,34	cyclictest	3302515	-21	timerandwakeup	22:35:45	0
3141356	99	90	27,51	cyclictest	674	50	irq/528-eth0-Tx	22:32:05	0
3141356	99	90	1,24	cyclictest	0	-21	swapper/0	21:34:58	0
3141367	99	87	78,6	cyclictest	210	-21	kswapd0	22:45:01	2
3141356	99	87	6,5	cyclictest	673	50	irq/527-eth0-Tx	21:16:48	0
3141356	99	87	3,61	cyclictest	13	-21	ksoftirqd/0	23:26:56	0
3285182	2	86	0,5	sleep3	0	-21	swapper/3	22:23:06	3
3141356	99	85	45,4	cyclictest	673	50	irq/527-eth0-Tx	21:10:37	0
3141381	99	84	78,3	cyclictest	0	-21	swapper/5	00:25:37	5
3141356	99	84	16,52	cyclictest	673	50	irq/527-eth0-Tx	23:12:02	0
3141381	99	83	77,2	cyclictest	0	-21	swapper/5	20:30:15	5
3141381	99	83	75,4	cyclictest	0	-21	swapper/5	22:10:15	5
3141381	99	83	75,4	cyclictest	0	-21	swapper/5	22:10:15	5
3141356	99	83	15,40	cyclictest	13	-21	ksoftirqd/0	22:00:18	0
3141381	99	82	76,3	cyclictest	0	-21	swapper/5	21:45:22	5
3141356	99	82	29,14	cyclictest	3248859	-21	ntpq	21:55:32	0
3141381	99	81	74,3	cyclictest	0	-21	swapper/5	21:17:58	5
3141356	99	81	43,13	cyclictest	3173231	-1	kworker/0:0H-events_highpri	23:50:34	0
3141356	99	81	31,15	cyclictest	13	-21	ksoftirqd/0	22:20:02	0
3141356	99	81	31,15	cyclictest	13	-21	ksoftirqd/0	22:20:01	0
3141356	99	81	29,7	cyclictest	13	-21	ksoftirqd/0	00:05:28	0
3221773	2	80	0,20	chrt	0	-21	swapper/0	21:35:22	0
3141376	99	80	70,5	cyclictest	3215799	-21	ssh	21:30:37	4
3141360	99	80	67,6	cyclictest	3295249	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:32:21	1
3141381	99	79	73,3	cyclictest	0	-21	swapper/5	19:26:02	5
3141381	99	79	72,3	cyclictest	0	-21	swapper/5	21:20:45	5
3141381	99	79	72,3	cyclictest	0	-21	swapper/5	21:20:45	5
3141372	99	79	65,7	cyclictest	3424618	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	00:20:15	3
3141381	99	78	71,3	cyclictest	0	-21	swapper/5	22:15:28	5
3141381	99	78	71,3	cyclictest	0	-21	swapper/5	22:15:27	5
3141372	99	78	64,7	cyclictest	3149784	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	19:31:52	3
3141367	99	78	64,7	cyclictest	3416477	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	00:22:39	2
3141356	99	78	7,37	cyclictest	3282059	-21	ntpq	22:20:33	0
3141356	99	78	31,4	cyclictest	675	50	irq/529-eth0-Tx	00:37:12	0
3141356	99	77	22,18	cyclictest	3426667	-21	/usr/sbin/munin	00:10:20	0
3141356	99	77	20,16	cyclictest	15	-21	rcuc/0	23:40:20	0
3141356	99	76	41,4	cyclictest	673	50	irq/527-eth0-Tx	19:25:51	0
3141381	99	75	70,2	cyclictest	0	-21	swapper/5	22:37:21	5
3141381	99	75	69,2	cyclictest	0	-21	swapper/5	22:20:19	5
3141381	99	75	68,3	cyclictest	0	-21	swapper/5	23:10:45	5
3141356	99	75	31,5	cyclictest	673	50	irq/527-eth0-Tx	00:20:15	0
3299899	2	74	0,5	sleep2	0	-21	swapper/2	22:34:35	2
3141381	99	73	67,3	cyclictest	0	-21	swapper/5	19:35:43	5
3141381	99	73	67,3	cyclictest	0	-21	swapper/5	19:35:43	5
3141376	99	73	68,2	cyclictest	0	-21	swapper/4	22:50:15	4
3141376	99	73	68,2	cyclictest	0	-21	swapper/4	22:50:14	4
3141367	99	73	59,7	cyclictest	3171241	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:29:46	2
3141356	99	73	54,16	cyclictest	3161156	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	20:01:47	0
3141356	99	73	34,4	cyclictest	675	50	irq/529-eth0-Tx	23:15:36	0
3418045	2	72	0,6	sleep1	0	-21	swapper/1	00:03:27	1
3418045	2	72	0,6	sleep1	0	-21	swapper/1	00:03:27	1
3141381	99	72	66,3	cyclictest	0	-21	swapper/5	22:40:18	5
3141381	99	72	65,4	cyclictest	0	-21	swapper/5	00:10:12	5
3197677	2	71	0,4	chrt	23	-21	ksoftirqd/1	21:16:55	1
3141381	99	71	66,2	cyclictest	0	-21	swapper/5	23:15:16	5
3141381	99	71	65,3	cyclictest	0	-21	swapper/5	00:19:43	5
3141367	99	71	62,6	cyclictest	210	-21	kswapd0	23:35:26	2
3141360	99	71	58,6	cyclictest	3155267	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	19:46:52	1
3141356	99	71	50,16	cyclictest	3183508	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:55:00	0
3141381	99	70	64,2	cyclictest	0	-21	swapper/5	23:20:41	5
3141381	99	70	63,4	cyclictest	0	-21	swapper/5	23:45:15	5
3141381	99	70	63,4	cyclictest	0	-21	swapper/5	23:45:14	5
3141367	99	70	61,6	cyclictest	3370838	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:31:00	2
3141367	99	70	57,7	cyclictest	3165277	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:11:55	2
3141367	99	70	57,7	cyclictest	3165277	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:11:55	2
3141381	99	69	64,2	cyclictest	0	-21	swapper/5	22:55:17	5
3141381	99	69	64,2	cyclictest	0	-21	swapper/5	00:37:45	5
3141381	99	69	63,3	cyclictest	0	-21	swapper/5	20:55:21	5
3141381	99	69	63,2	cyclictest	0	-21	swapper/5	21:35:39	5
3141381	99	69	62,3	cyclictest	0	-21	swapper/5	21:54:29	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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