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Default latency plot of system in rack #d, 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.
Unexpectedly long latencies may be caused by SMIs
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 rackdslot4.osadl.org (updated Tue Jun 02, 2026 00:45:52)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
6932	2	205	172,22	sleep2	0	-21	swapper/2	19:09:24	2
1385	91	205	171,23	phc2sys	0	-21	swapper/3	19:07:23	3
6661	2	200	166,22	sleep1	0	-21	swapper/1	19:05:58	1
6655	2	199	166,22	sleep0	0	-21	swapper/0	19:05:51	0
27657	2	174	0,6	sleep2	7276	99	cyclictest	19:50:15	2
6227	2	125	0,1	sleep2	0	-21	swapper/2	00:30:21	2
6227	2	125	0,1	sleep2	0	-21	swapper/2	00:30:20	2
7275	99	63	25,5	cyclictest	25	-21	ksoftirqd/1	21:00:00	1
7275	99	63	25,5	cyclictest	25	-21	ksoftirqd/1	21:00:00	1
7275	99	61	26,5	cyclictest	25	-21	ksoftirqd/1	23:10:00	1
23688	2	56	0,2	sleep1	0	-21	swapper/1	21:50:25	1
1384	91	55	0,1	ptp4l	40	1	ktimersoftd/3	20:32:50	3
1384	91	55	0,0	ptp4l	39	1	rcuc/3	22:46:59	3
7275	99	51	18,3	cyclictest	25	-21	ksoftirqd/1	21:20:00	1
27391	2	51	0,1	sleep2	0	-21	swapper/2	00:10:14	2
27177	2	51	0,3	sleep3	0	-21	swapper/3	23:05:00	3
7275	99	50	15,8	cyclictest	25	-21	ksoftirqd/1	00:25:01	1
7275	99	50	15,8	cyclictest	25	-21	ksoftirqd/1	00:25:01	1
7275	99	48	15,3	cyclictest	25	-21	ksoftirqd/1	21:35:00	1
7275	99	46	17,7	cyclictest	25	-21	ksoftirqd/1	21:25:00	1
7275	99	46	15,8	cyclictest	25	-21	ksoftirqd/1	19:20:14	1
7275	99	45	9,8	cyclictest	25	-21	ksoftirqd/1	00:40:00	1
7277	99	44	4,10	cyclictest	41	-21	ksoftirqd/3	20:00:01	3
7276	99	44	32,10	cyclictest	33	-21	ksoftirqd/2	22:55:16	2
7276	99	44	11,5	cyclictest	33	-21	ksoftirqd/2	19:55:18	2
7275	99	44	1,3	cyclictest	12	1	rcu_preempt	00:10:14	1
7276	99	43	31,10	cyclictest	33	-21	ksoftirqd/2	19:15:25	2
7276	99	43	31,10	cyclictest	33	-21	ksoftirqd/2	19:15:25	2
7276	99	43	18,4	cyclictest	33	-21	ksoftirqd/2	00:00:19	2
7276	99	43	1,4	cyclictest	33	-21	ksoftirqd/2	00:15:28	2
7275	99	43	13,4	cyclictest	25	-21	ksoftirqd/1	22:00:26	1
7275	99	43	10,8	cyclictest	25	-21	ksoftirqd/1	22:50:14	1
1384	91	43	0,0	ptp4l	40	1	ktimersoftd/3	23:54:44	3
7277	99	42	4,8	cyclictest	41	-21	ksoftirqd/3	19:50:14	3
7275	99	42	8,7	cyclictest	25	-21	ksoftirqd/1	19:55:22	1
7275	99	42	1,6	cyclictest	25	-21	ksoftirqd/1	21:45:28	1
7275	99	42	14,7	cyclictest	25	-21	ksoftirqd/1	20:15:16	1
7275	99	42	13,7	cyclictest	25	-21	ksoftirqd/1	21:05:01	1
1384	91	42	0,0	ptp4l	40	1	ktimersoftd/3	21:00:46	3
7275	99	41	8,7	cyclictest	25	-21	ksoftirqd/1	22:40:19	1
7275	99	41	8,4	cyclictest	25	-21	ksoftirqd/1	19:10:19	1
7275	99	41	6,5	cyclictest	25	-21	ksoftirqd/1	00:15:24	1
7275	99	41	3,8	cyclictest	25	-21	ksoftirqd/1	20:40:21	1
7275	99	41	35,3	cyclictest	25	-21	ksoftirqd/1	19:50:01	1
7275	99	41	10,8	cyclictest	25	-21	ksoftirqd/1	19:40:25	1
7275	99	41	10,7	cyclictest	25	-21	ksoftirqd/1	19:35:18	1
7275	99	41	10,4	cyclictest	25	-21	ksoftirqd/1	19:50:20	1
7277	99	40	34,3	cyclictest	41	-21	ksoftirqd/3	23:00:00	3
7277	99	40	2,7	cyclictest	41	-21	ksoftirqd/3	19:10:27	3
7276	99	40	30,9	cyclictest	33	-21	ksoftirqd/2	22:30:20	2
7276	99	40	26,4	cyclictest	33	-21	ksoftirqd/2	23:25:19	2
7275	99	40	9,8	cyclictest	25	-21	ksoftirqd/1	21:35:17	1
7275	99	40	7,8	cyclictest	25	-21	ksoftirqd/1	20:50:00	1
7275	99	40	4,8	cyclictest	25	-21	ksoftirqd/1	23:50:17	1
7275	99	40	3,8	cyclictest	25	-21	ksoftirqd/1	22:00:00	1
7275	99	40	34,3	cyclictest	25	-21	ksoftirqd/1	23:35:13	1
7275	99	40	10,4	cyclictest	25	-21	ksoftirqd/1	00:30:13	1
7275	99	40	10,4	cyclictest	25	-21	ksoftirqd/1	00:30:13	1
1384	91	40	0,0	ptp4l	40	1	ktimersoftd/3	21:23:25	3
7276	99	39	33,3	cyclictest	33	-21	ksoftirqd/2	20:40:20	2
7276	99	39	18,14	cyclictest	33	-21	ksoftirqd/2	20:05:20	2
7275	99	39	9,4	cyclictest	25	-21	ksoftirqd/1	20:10:13	1
7275	99	39	7,7	cyclictest	25	-21	ksoftirqd/1	21:25:25	1
7275	99	39	7,4	cyclictest	25	-21	ksoftirqd/1	22:30:23	1
7275	99	39	6,8	cyclictest	25	-21	ksoftirqd/1	20:05:13	1
7275	99	39	5,6	cyclictest	12	1	rcu_preempt	00:25:15	1
7275	99	39	5,6	cyclictest	12	1	rcu_preempt	00:25:15	1
7275	99	39	5,3	cyclictest	12	1	rcu_preempt	22:55:13	1
7275	99	39	5,3	cyclictest	12	1	rcu_preempt	20:50:13	1
7275	99	39	4,8	cyclictest	25	-21	ksoftirqd/1	23:45:15	1
7275	99	39	4,3	cyclictest	12	1	rcu_preempt	22:10:20	1
7275	99	39	4,3	cyclictest	12	1	rcu_preempt	20:00:17	1
7275	99	39	4,2	cyclictest	12	1	rcu_preempt	23:30:21	1
7275	99	39	35,2	cyclictest	24	1	ktimersoftd/1	21:10:16	1
7275	99	39	34,3	cyclictest	25	-21	ksoftirqd/1	19:20:00	1
7275	99	39	34,3	cyclictest	25	-21	ksoftirqd/1	19:20:00	1
7275	99	39	3,3	cyclictest	25	-21	ksoftirqd/1	23:55:20	1
7275	99	39	3,3	cyclictest	12	1	rcu_preempt	23:40:27	1
7275	99	39	33,3	cyclictest	25	-21	ksoftirqd/1	22:05:13	1
7275	99	39	12,6	cyclictest	25	-21	ksoftirqd/1	23:15:19	1
7277	99	38	34,2	cyclictest	41	-21	ksoftirqd/3	20:10:01	3
7277	99	38	1,5	cyclictest	41	-21	ksoftirqd/3	23:25:00	3
7277	99	38	1,3	cyclictest	12	1	rcu_preempt	00:40:00	3
7276	99	38	34,3	cyclictest	33	-21	ksoftirqd/2	23:59:59	2
7276	99	38	34,2	cyclictest	33	-21	ksoftirqd/2	22:04:59	2
7276	99	38	33,3	cyclictest	33	-21	ksoftirqd/2	21:45:01	2
7276	99	38	33,3	cyclictest	33	-21	ksoftirqd/2	20:05:00	2
7276	99	38	33,3	cyclictest	33	-21	ksoftirqd/2	00:25:00	2
7276	99	38	33,3	cyclictest	33	-21	ksoftirqd/2	00:25:00	2
7275	99	38	8,4	cyclictest	25	-21	ksoftirqd/1	20:35:18	1
7275	99	38	4,3	cyclictest	25	-21	ksoftirqd/1	21:05:18	1
7275	99	38	3,7	cyclictest	25	-21	ksoftirqd/1	00:05:19	1
7275	99	38	2,4	cyclictest	25	-21	ksoftirqd/1	22:35:25	1
7275	99	38	2,4	cyclictest	25	-21	ksoftirqd/1	22:35:25	1
7274	99	38	33,3	cyclictest	9	-21	ksoftirqd/0	23:50:30	0
7277	99	37	33,2	cyclictest	41	-21	ksoftirqd/3	21:15:01	3
7277	99	37	31,4	cyclictest	41	-21	ksoftirqd/3	00:30:49	3
7277	99	37	31,4	cyclictest	41	-21	ksoftirqd/3	00:30:49	3
7277	99	37	30,5	cyclictest	41	-21	ksoftirqd/3	21:47:02	3
7277	99	37	30,4	cyclictest	41	-21	ksoftirqd/3	20:23:25	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-06-15 - 15:04