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Default latency plot of shadow in rack #e, slot #3

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8
Special All - All RT - Optimization - Ethernet - Thumbnails - Next

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
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rackeslot3s.osadl.org (updated Sat Jun 13, 2026 00:45:28)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1647318	99	73	68,3	cyclictest	150	-21	pr/ttyS2	23:05:01	0
1647328	99	71	10,5	cyclictest	13	1	rcu_preempt	23:45:01	3
1647323	99	67	13,7	cyclictest	13	1	rcu_preempt	22:55:02	1
1647318	99	67	7,7	cyclictest	12	1	ksoftirqd/0	00:20:16	0
1647318	99	67	14,11	cyclictest	12	-21	ksoftirqd/0	23:54:53	0
1647318	99	66	23,9	cyclictest	12	-21	ksoftirqd/0	20:10:02	0
1647318	99	66	23,9	cyclictest	12	-21	ksoftirqd/0	20:10:01	0
1647318	99	65	3,5	cyclictest	13	1	rcu_preempt	22:34:59	0
1647325	99	64	2,45	cyclictest	1709582	-21	sh	23:15:01	2
1647323	99	64	7,11	cyclictest	23	-21	ksoftirqd/1	00:20:01	1
1647323	99	64	30,10	cyclictest	23	-21	ksoftirqd/1	22:26:57	1
1647323	99	64	30,10	cyclictest	23	-21	ksoftirqd/1	22:26:57	1
1647318	99	64	7,38	cyclictest	12	-21	ksoftirqd/0	22:43:57	0
1647318	99	64	22,21	cyclictest	0	-21	swapper/0	23:11:44	0
1647318	99	62	20,38	cyclictest	12	-21	ksoftirqd/0	22:55:00	0
1647318	99	62	16,7	cyclictest	12	-21	ksoftirqd/0	22:10:01	0
1647318	99	62	1,4	cyclictest	13	1	rcu_preempt	22:15:00	0
1647325	99	61	17,8	cyclictest	0	-21	swapper/2	21:29:21	2
1647323	99	61	20,9	cyclictest	23	-21	ksoftirqd/1	21:15:00	1
1647318	99	61	27,17	cyclictest	1731858	-21	ssh	00:05:00	0
1647318	99	61	1,39	cyclictest	13	1	rcu_preempt	23:38:57	0
1647323	99	60	28,10	cyclictest	23	-21	ksoftirqd/1	21:40:01	1
1647323	99	59	5,7	cyclictest	23	-21	ksoftirqd/1	22:50:02	1
1647323	99	59	5,7	cyclictest	23	-21	ksoftirqd/1	22:50:02	1
1647323	99	59	25,12	cyclictest	23	-21	ksoftirqd/1	23:10:01	1
1647323	99	59	12,5	cyclictest	13	1	rcu_preempt	23:05:01	1
1647318	99	59	6,6	cyclictest	13	1	rcu_preempt	23:10:02	0
1647318	99	59	49,6	cyclictest	1729615	-21	latency_hist	00:00:03	0
1647318	99	59	49,6	cyclictest	1729615	-21	latency_hist	00:00:02	0
1647318	99	59	2,5	cyclictest	13	1	rcu_preempt	23:50:02	0
1647318	99	59	21,34	cyclictest	1648625	-21	latency_hist	19:35:02	0
1647323	99	58	8,7	cyclictest	23	-21	ksoftirqd/1	00:15:01	1
1647323	99	58	7,36	cyclictest	0	-21	swapper/1	00:35:02	1
1647323	99	58	20,7	cyclictest	23	-21	ksoftirqd/1	21:43:39	1
1647323	99	58	12,6	cyclictest	13	1	rcu_preempt	21:29:19	1
1647318	99	58	23,12	cyclictest	12	-21	ksoftirqd/0	21:40:01	0
1647323	99	57	7,9	cyclictest	23	-21	ksoftirqd/1	00:39:54	1
1647323	99	57	25,5	cyclictest	23	-21	ksoftirqd/1	21:22:40	1
1647323	99	57	10,5	cyclictest	13	1	rcu_preempt	00:10:01	1
1647318	99	57	47,8	cyclictest	12	-21	ksoftirqd/0	23:40:21	0
1647318	99	57	30,20	cyclictest	0	-21	swapper/0	22:49:35	0
1647318	99	57	30,20	cyclictest	0	-21	swapper/0	22:49:34	0
1647318	99	57	25,7	cyclictest	12	-21	ksoftirqd/0	20:45:00	0
1647325	99	56	6,5	cyclictest	13	1	rcu_preempt	21:25:01	2
1647325	99	56	46,5	cyclictest	1639990	-21	kworker/2:1	22:15:01	2
1647325	99	56	38,13	cyclictest	1	-21	systemd	00:05:01	2
1647323	99	56	8,9	cyclictest	23	-21	ksoftirqd/1	20:35:00	1
1647323	99	56	6,8	cyclictest	23	-21	ksoftirqd/1	22:15:01	1
1647323	99	56	16,13	cyclictest	23	-21	ksoftirqd/1	00:23:50	1
1647318	99	56	28,13	cyclictest	1676715	-21	ssh	22:01:14	0
1647318	99	56	24,23	cyclictest	12	-21	ksoftirqd/0	23:30:02	0
1647318	99	56	1,40	cyclictest	13	1	rcu_preempt	21:53:18	0
1647318	99	56	11,6	cyclictest	13	1	rcu_preempt	23:31:31	0
1647328	99	55	13,23	cyclictest	0	-21	swapper/3	23:59:15	3
1647328	99	55	13,23	cyclictest	0	-21	swapper/3	23:59:14	3
1647325	99	55	45,7	cyclictest	1707263	-21	kworker/2:2	00:25:35	2
1647323	99	55	5,10	cyclictest	23	-21	ksoftirqd/1	22:55:22	1
1647323	99	55	5,10	cyclictest	23	-21	ksoftirqd/1	22:55:22	1
1647323	99	55	1,18	cyclictest	23	-21	ksoftirqd/1	00:00:01	1
1647323	99	55	1,18	cyclictest	23	-21	ksoftirqd/1	00:00:00	1
1647318	99	55	28,12	cyclictest	1702140	-21	ssh	22:58:21	0
1647318	99	55	28,12	cyclictest	1702140	-21	ssh	22:58:21	0
1647318	99	55	2,37	cyclictest	1655548	-21	ssh	21:14:32	0
1647318	99	55	22,30	cyclictest	12	-21	ksoftirqd/0	21:48:43	0
1647318	99	55	19,4	cyclictest	13	1	rcu_preempt	00:15:33	0
1647318	99	55	13,37	cyclictest	12	-21	ksoftirqd/0	00:25:03	0
1647325	99	54	46,5	cyclictest	1707263	-21	kworker/2:2	23:19:10	2
1647325	99	54	46,5	cyclictest	1707263	-21	kworker/2:2	00:20:00	2
1647325	99	54	44,7	cyclictest	1707263	-21	kworker/2:2	00:39:56	2
1647323	99	54	9,5	cyclictest	13	1	rcu_preempt	22:42:16	1
1647323	99	54	13,11	cyclictest	23	-21	ksoftirqd/1	21:52:28	1
1647323	99	54	11,5	cyclictest	13	1	rcu_preempt	21:57:46	1
1647323	99	54	11,5	cyclictest	13	1	rcu_preempt	21:48:39	1
1647318	99	54	32,4	cyclictest	13	1	rcu_preempt	20:20:04	0
1647318	99	54	20,9	cyclictest	12	-21	ksoftirqd/0	23:17:02	0
1647325	99	53	45,5	cyclictest	1641027	-21	kworker/2:3	23:43:28	2
1647325	99	53	45,5	cyclictest	1641027	-21	kworker/2:3	23:29:53	2
1647325	99	53	43,6	cyclictest	1639990	-21	kworker/2:1	22:10:03	2
1647323	99	53	7,9	cyclictest	23	-21	ksoftirqd/1	23:52:57	1
1647323	99	53	5,11	cyclictest	23	-21	ksoftirqd/1	19:20:01	1
1647323	99	53	12,12	cyclictest	13	1	rcu_preempt	22:25:02	1
1647323	99	53	1,16	cyclictest	23	-21	ksoftirqd/1	21:31:42	1
1647323	99	53	11,5	cyclictest	13	1	rcu_preempt	23:31:19	1
1647318	99	53	9,6	cyclictest	13	1	rcu_preempt	21:40:36	0
1647318	99	53	2,14	cyclictest	1653489	-21	cut	21:10:00	0
1647318	99	53	2,10	cyclictest	12	-21	ksoftirqd/0	21:27:40	0
1647325	99	52	44,5	cyclictest	1641027	-21	kworker/2:3	22:33:05	2
1647325	99	52	43,5	cyclictest	1641027	-21	kworker/2:3	23:23:01	2
1647323	99	52	9,11	cyclictest	23	-21	ksoftirqd/1	23:50:01	1
1647323	99	52	8,7	cyclictest	23	-21	ksoftirqd/1	22:19:32	1
1647323	99	52	44,5	cyclictest	22	1	rcuc/1	20:15:01	1
1647318	99	52	28,9	cyclictest	1688605	-21	ssh	22:28:02	0
1647318	99	52	28,9	cyclictest	1688605	-21	ssh	22:28:01	0
1647325	99	51	6,32	cyclictest	30	-21	ksoftirqd/2	20:20:02	2
1647325	99	51	44,4	cyclictest	1641027	-21	kworker/2:3	22:22:36	2
1647325	99	51	43,5	cyclictest	1641027	-21	kworker/2:3	22:49:33	2
1647325	99	51	43,5	cyclictest	1641027	-21	kworker/2:3	22:49:32	2
1647325	99	51	43,5	cyclictest	1639990	-21	kworker/2:1	22:39:18	2
1647325	99	51	43,5	cyclictest	1639990	-21	kworker/2:1	22:39:17	2
1647325	99	51	42,5	cyclictest	1639990	-21	kworker/2:1	21:46:36	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2021-09-01 - 00:33