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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
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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
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rackeslot3s.osadl.org (updated Thu Dec 04, 2025 00:45:02)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1053840	99	109	3,9	cyclictest	30	-21	ksoftirqd/2	23:40:03	2
1053833	99	106	8,17	cyclictest	13	1	rcu_preempt	19:10:02	0
1053833	99	79	68,3	cyclictest	0	-21	swapper/0	22:25:03	0
1053833	99	69	5,22	cyclictest	0	-21	swapper/0	23:40:02	0
1053844	99	64	14,11	cyclictest	37	-21	ksoftirqd/3	19:20:00	3
1053844	99	62	7,10	cyclictest	37	-21	ksoftirqd/3	21:40:02	3
1053840	99	61	20,11	cyclictest	30	-21	ksoftirqd/2	19:40:00	2
1053840	99	61	16,5	cyclictest	13	1	rcu_preempt	23:30:01	2
1053840	99	61	1,15	cyclictest	30	-21	ksoftirqd/2	22:50:01	2
1053833	99	61	27,24	cyclictest	15	1	rcuc/0	23:55:01	0
1053844	99	60	5,9	cyclictest	37	-21	ksoftirqd/3	19:30:39	3
1053840	99	60	7,11	cyclictest	30	-21	ksoftirqd/2	20:35:03	2
1053838	99	60	4,10	cyclictest	23	-21	ksoftirqd/1	22:40:02	1
1053844	99	59	8,9	cyclictest	37	-21	ksoftirqd/3	21:00:00	3
1053844	99	59	8,9	cyclictest	37	-21	ksoftirqd/3	21:00:00	3
1053844	99	59	5,7	cyclictest	37	-21	ksoftirqd/3	00:15:01	3
1053844	99	59	40,15	cyclictest	1	-21	systemd	23:55:00	3
1053840	99	59	9,14	cyclictest	30	-21	ksoftirqd/2	00:00:02	2
1053840	99	59	6,10	cyclictest	30	-21	ksoftirqd/2	00:20:00	2
1053838	99	59	6,28	cyclictest	1063271	-21	kworker/u8:0	22:20:03	1
1053833	99	59	52,4	cyclictest	169	50	irq/224-8000000	20:20:01	0
1053844	99	58	5,11	cyclictest	37	-21	ksoftirqd/3	20:45:01	3
1053844	99	58	15,6	cyclictest	13	1	rcu_preempt	21:15:01	3
1053840	99	58	8,12	cyclictest	30	-21	ksoftirqd/2	21:05:00	2
1053840	99	58	6,7	cyclictest	30	-21	ksoftirqd/2	21:55:01	2
1053838	99	58	5,9	cyclictest	23	-21	ksoftirqd/1	22:00:00	1
1053838	99	58	13,7	cyclictest	13	1	rcu_preempt	23:20:03	1
1053833	99	58	18,14	cyclictest	1069037	-40	mandb	00:00:02	0
1053844	99	57	4,9	cyclictest	37	-21	ksoftirqd/3	23:50:02	3
1053844	99	57	11,6	cyclictest	13	1	rcu_preempt	22:55:04	3
1053840	99	57	8,9	cyclictest	30	-21	ksoftirqd/2	22:05:01	2
1053840	99	57	14,5	cyclictest	13	1	rcu_preempt	20:50:03	2
1053840	99	57	12,6	cyclictest	13	1	rcu_preempt	23:35:01	2
1053838	99	57	11,6	cyclictest	13	1	rcu_preempt	23:45:01	1
1053844	99	56	6,6	cyclictest	37	-21	ksoftirqd/3	22:20:01	3
1053844	99	56	40,11	cyclictest	1	-21	systemd	22:25:01	3
1053844	99	56	15,5	cyclictest	13	1	rcu_preempt	20:40:02	3
1053844	99	56	13,6	cyclictest	13	1	rcu_preempt	23:00:00	3
1053844	99	56	13,6	cyclictest	13	1	rcu_preempt	22:05:01	3
1053844	99	56	12,9	cyclictest	37	-21	ksoftirqd/3	23:10:02	3
1053844	99	56	11,6	cyclictest	13	1	rcu_preempt	20:20:01	3
1053844	99	56	10,6	cyclictest	13	1	rcu_preempt	22:35:01	3
1053840	99	56	9,6	cyclictest	13	1	rcu_preempt	22:10:03	2
1053840	99	56	9,6	cyclictest	13	1	rcu_preempt	22:10:02	2
1053840	99	56	7,5	cyclictest	30	-21	ksoftirqd/2	22:35:03	2
1053840	99	56	3,9	cyclictest	30	-21	ksoftirqd/2	22:40:00	2
1053840	99	56	14,5	cyclictest	13	1	rcu_preempt	22:45:00	2
1053838	99	56	5,6	cyclictest	23	-21	ksoftirqd/1	19:19:42	1
1053838	99	56	32,11	cyclictest	23	-21	ksoftirqd/1	19:45:00	1
1053838	99	56	11,6	cyclictest	13	1	rcu_preempt	00:40:02	1
1053833	99	56	25,8	cyclictest	12	-21	ksoftirqd/0	22:15:01	0
1053844	99	55	7,11	cyclictest	37	-21	ksoftirqd/3	20:15:06	3
1053844	99	55	5,10	cyclictest	37	-21	ksoftirqd/3	20:25:02	3
1053844	99	55	36,8	cyclictest	37	-21	ksoftirqd/3	21:20:02	3
1053844	99	55	25,17	cyclictest	37	-21	ksoftirqd/3	19:45:00	3
1053840	99	55	4,9	cyclictest	30	-21	ksoftirqd/2	19:30:38	2
1053838	99	55	7,6	cyclictest	13	1	rcu_preempt	23:00:00	1
1053838	99	55	16,8	cyclictest	23	-21	ksoftirqd/1	19:30:01	1
1053833	99	55	5,29	cyclictest	169	50	irq/224-8000000	19:30:38	0
1053844	99	54	9,5	cyclictest	13	1	rcu_preempt	22:10:02	3
1053844	99	54	9,5	cyclictest	13	1	rcu_preempt	22:10:01	3
1053844	99	54	8,8	cyclictest	37	-21	ksoftirqd/3	22:50:02	3
1053844	99	54	6,10	cyclictest	37	-21	ksoftirqd/3	00:10:01	3
1053844	99	54	6,10	cyclictest	37	-21	ksoftirqd/3	00:10:00	3
1053844	99	54	10,5	cyclictest	13	1	rcu_preempt	00:05:03	3
1053840	99	54	6,5	cyclictest	13	1	rcu_preempt	00:10:03	2
1053840	99	54	4,9	cyclictest	30	-21	ksoftirqd/2	21:30:00	2
1053840	99	54	25,9	cyclictest	30	-21	ksoftirqd/2	21:00:01	2
1053840	99	54	25,9	cyclictest	30	-21	ksoftirqd/2	21:00:00	2
1053840	99	54	15,4	cyclictest	13	1	rcu_preempt	22:30:01	2
1053840	99	54	10,5	cyclictest	13	1	rcu_preempt	20:25:02	2
1053838	99	54	8,5	cyclictest	13	1	rcu_preempt	20:40:01	1
1053838	99	54	2,5	cyclictest	13	1	rcu_preempt	21:40:01	1
1053844	99	53	9,6	cyclictest	13	1	rcu_preempt	21:50:00	3
1053844	99	53	9,11	cyclictest	37	-21	ksoftirqd/3	21:10:01	3
1053844	99	53	6,7	cyclictest	37	-21	ksoftirqd/3	22:30:02	3
1053840	99	53	7,10	cyclictest	30	-21	ksoftirqd/2	00:05:02	2
1053840	99	53	6,9	cyclictest	30	-21	ksoftirqd/2	19:25:01	2
1053840	99	53	6,8	cyclictest	30	-21	ksoftirqd/2	20:15:05	2
1053840	99	53	6,7	cyclictest	30	-21	ksoftirqd/2	00:25:03	2
1053840	99	53	6,7	cyclictest	30	-21	ksoftirqd/2	00:25:02	2
1053840	99	53	5,9	cyclictest	30	-21	ksoftirqd/2	23:50:01	2
1053840	99	53	4,8	cyclictest	30	-21	ksoftirqd/2	23:22:41	2
1053840	99	53	2,23	cyclictest	30	-21	ksoftirqd/2	21:45:02	2
1053840	99	53	2,12	cyclictest	30	-21	ksoftirqd/2	00:40:00	2
1053840	99	53	16,6	cyclictest	13	1	rcu_preempt	22:55:01	2
1053840	99	53	13,6	cyclictest	13	1	rcu_preempt	19:45:01	2
1053838	99	53	9,5	cyclictest	13	1	rcu_preempt	21:45:02	1
1053838	99	53	13,12	cyclictest	23	-21	ksoftirqd/1	19:25:00	1
1053838	99	53	12,6	cyclictest	13	1	rcu_preempt	21:50:01	1
1053838	99	53	11,6	cyclictest	13	1	rcu_preempt	20:50:01	1
1053844	99	52	32,9	cyclictest	37	-21	ksoftirqd/3	19:30:01	3
1053844	99	52	24,10	cyclictest	37	-21	ksoftirqd/3	23:45:01	3
1053844	99	52	13,6	cyclictest	13	1	rcu_preempt	20:50:01	3
1053844	99	52	11,5	cyclictest	13	1	rcu_preempt	20:35:01	3
1053844	99	52	11,4	cyclictest	13	1	rcu_preempt	21:45:02	3
1053840	99	52	9,6	cyclictest	13	1	rcu_preempt	19:19:42	2
1053840	99	52	9,5	cyclictest	13	1	rcu_preempt	21:11:32	2
1053840	99	52	7,6	cyclictest	30	-21	ksoftirqd/2	20:30:01	2
1053840	99	52	7,4	cyclictest	13	1	rcu_preempt	21:50:02	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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