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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 Tue Mar 10, 2026 00:45:29)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1135940	99	137	1,3	cyclictest	0	-21	swapper/0	00:10:02	0
1135940	99	132	123,6	cyclictest	12	-21	ksoftirqd/0	20:00:02	0
1135956	99	102	14,8	cyclictest	13	1	rcu_preempt	22:20:03	3
1135947	99	99	1,22	cyclictest	23	-21	ksoftirqd/1	20:45:02	1
1135947	99	80	48,9	cyclictest	23	-21	ksoftirqd/1	22:08:12	1
1135947	99	69	7,13	cyclictest	23	-21	ksoftirqd/1	21:25:02	1
1135947	99	69	7,13	cyclictest	23	-21	ksoftirqd/1	21:25:02	1
1135951	99	66	40,8	cyclictest	1229370	-21	kworker/2:3	00:34:08	2
1135940	99	66	7,6	cyclictest	13	1	rcu_preempt	22:25:01	0
1135947	99	65	4,8	cyclictest	23	-21	ksoftirqd/1	20:00:00	1
1135947	99	65	22,8	cyclictest	13	1	rcu_preempt	23:37:32	1
1135947	99	65	22,8	cyclictest	13	1	rcu_preempt	23:37:32	1
1135951	99	63	54,7	cyclictest	30	-21	ksoftirqd/2	23:10:02	2
1135951	99	63	39,13	cyclictest	1180124	-21	kworker/2:1	23:22:48	2
1135947	99	63	25,13	cyclictest	23	-21	ksoftirqd/1	21:20:00	1
1135947	99	63	14,7	cyclictest	1141617	-21	systemd-run	21:00:00	1
1135940	99	62	9,9	cyclictest	12	-21	ksoftirqd/0	22:41:22	0
1135951	99	61	7,6	cyclictest	13	1	rcu_preempt	22:55:02	2
1135951	99	61	4,9	cyclictest	30	-21	ksoftirqd/2	00:25:00	2
1135951	99	61	37,16	cyclictest	1224867	-21	kworker/2:0	00:17:44	2
1135951	99	61	37,16	cyclictest	1224867	-21	kworker/2:0	00:17:44	2
1135951	99	61	14,6	cyclictest	13	1	rcu_preempt	21:46:43	2
1135947	99	61	18,13	cyclictest	23	-21	ksoftirqd/1	23:10:01	1
1135947	99	61	14,5	cyclictest	13	1	rcu_preempt	00:16:55	1
1135947	99	61	14,5	cyclictest	13	1	rcu_preempt	00:16:55	1
1135940	99	61	8,34	cyclictest	12	-21	ksoftirqd/0	23:17:12	0
1135940	99	61	38,14	cyclictest	0	-21	swapper/0	22:05:01	0
1135951	99	60	12,6	cyclictest	13	1	rcu_preempt	23:38:38	2
1135951	99	60	12,6	cyclictest	13	1	rcu_preempt	23:38:38	2
1135947	99	60	14,12	cyclictest	23	-21	ksoftirqd/1	21:50:01	1
1135940	99	60	1,11	cyclictest	12	-21	ksoftirqd/0	22:28:07	0
1135940	99	60	1,11	cyclictest	12	-21	ksoftirqd/0	22:28:07	0
1135951	99	59	36,13	cyclictest	1224867	-21	kworker/2:0	00:37:06	2
1135951	99	59	15,6	cyclictest	13	1	rcu_preempt	00:05:06	2
1135951	99	59	14,6	cyclictest	13	1	rcu_preempt	23:18:59	2
1135951	99	59	14,6	cyclictest	13	1	rcu_preempt	19:24:59	2
1135951	99	59	14,6	cyclictest	13	1	rcu_preempt	00:26:52	2
1135951	99	59	11,7	cyclictest	13	1	rcu_preempt	20:10:02	2
1135947	99	59	1,16	cyclictest	23	-21	ksoftirqd/1	23:45:12	1
1135951	99	58	32,10	cyclictest	30	-21	ksoftirqd/2	23:50:56	2
1135947	99	58	7,10	cyclictest	23	-21	ksoftirqd/1	23:20:59	1
1135947	99	58	4,13	cyclictest	23	-21	ksoftirqd/1	23:15:02	1
1135947	99	58	4,13	cyclictest	23	-21	ksoftirqd/1	23:15:02	1
1135947	99	58	2,8	cyclictest	23	-21	ksoftirqd/1	22:45:02	1
1135947	99	58	2,11	cyclictest	23	-21	ksoftirqd/1	21:30:01	1
1135947	99	58	15,12	cyclictest	23	-21	ksoftirqd/1	21:55:02	1
1135947	99	58	14,9	cyclictest	23	-21	ksoftirqd/1	00:05:00	1
1135947	99	58	14,10	cyclictest	23	-21	ksoftirqd/1	00:28:18	1
1135947	99	58	13,12	cyclictest	23	-21	ksoftirqd/1	00:37:24	1
1135940	99	58	9,6	cyclictest	13	1	rcu_preempt	23:55:01	0
1135940	99	58	42,10	cyclictest	1135944	-21	cat	19:10:01	0
1135940	99	58	3,4	cyclictest	13	1	rcu_preempt	22:15:01	0
1135940	99	58	30,24	cyclictest	1142675	1	ssh	21:11:05	0
1135940	99	58	29,13	cyclictest	1150991	-21	ssh	21:29:54	0
1135940	99	58	1,51	cyclictest	274	-21	cron	00:00:00	0
1135940	99	58	1,51	cyclictest	274	-21	cron	00:00:00	0
1135956	99	57	8,5	cyclictest	13	1	rcu_preempt	00:10:01	3
1135951	99	57	8,6	cyclictest	13	1	rcu_preempt	23:30:01	2
1135951	99	57	12,6	cyclictest	13	1	rcu_preempt	22:58:59	2
1135951	99	57	11,5	cyclictest	13	1	rcu_preempt	22:19:04	2
1135947	99	57	5,7	cyclictest	23	-21	ksoftirqd/1	00:00:02	1
1135947	99	57	5,7	cyclictest	23	-21	ksoftirqd/1	00:00:02	1
1135947	99	57	5,11	cyclictest	23	-21	ksoftirqd/1	21:15:01	1
1135947	99	57	5,11	cyclictest	23	-21	ksoftirqd/1	00:20:29	1
1135947	99	57	39,14	cyclictest	1	-21	systemd	22:25:01	1
1135947	99	57	16,9	cyclictest	23	-21	ksoftirqd/1	23:45:00	1
1135947	99	57	16,12	cyclictest	0	-21	swapper/1	23:35:01	1
1135947	99	57	13,9	cyclictest	23	-21	ksoftirqd/1	22:14:20	1
1135940	99	57	30,13	cyclictest	12	-21	ksoftirqd/0	20:50:02	0
1135940	99	57	30,13	cyclictest	12	-21	ksoftirqd/0	20:50:02	0
1135940	99	57	19,33	cyclictest	168	50	irq/134-8000000	22:51:50	0
1135940	99	57	13,10	cyclictest	12	-21	ksoftirqd/0	22:09:17	0
1135951	99	56	7,4	cyclictest	13	1	rcu_preempt	21:05:01	2
1135951	99	56	7,4	cyclictest	13	1	rcu_preempt	21:05:01	2
1135951	99	56	6,12	cyclictest	30	-21	ksoftirqd/2	23:35:01	2
1135951	99	56	5,9	cyclictest	30	-21	ksoftirqd/2	22:00:01	2
1135951	99	56	42,5	cyclictest	1137974	-21	kworker/2:3	21:11:00	2
1135951	99	56	18,21	cyclictest	30	-21	ksoftirqd/2	21:35:07	2
1135951	99	56	16,6	cyclictest	13	1	rcu_preempt	00:00:00	2
1135951	99	56	16,6	cyclictest	13	1	rcu_preempt	00:00:00	2
1135951	99	56	16,5	cyclictest	13	1	rcu_preempt	22:27:51	2
1135951	99	56	16,5	cyclictest	13	1	rcu_preempt	22:27:51	2
1135951	99	56	15,5	cyclictest	13	1	rcu_preempt	22:35:25	2
1135951	99	56	14,6	cyclictest	13	1	rcu_preempt	23:47:00	2
1135951	99	56	14,5	cyclictest	13	1	rcu_preempt	22:42:17	2
1135951	99	56	13,5	cyclictest	13	1	rcu_preempt	21:17:14	2
1135951	99	56	11,6	cyclictest	13	1	rcu_preempt	23:14:32	2
1135951	99	56	11,6	cyclictest	13	1	rcu_preempt	23:14:32	2
1135951	99	56	11,6	cyclictest	13	1	rcu_preempt	22:25:01	2
1135951	99	56	10,6	cyclictest	13	1	rcu_preempt	21:25:29	2
1135951	99	56	10,6	cyclictest	13	1	rcu_preempt	20:30:02	2
1135947	99	56	9,8	cyclictest	0	-21	swapper/1	21:45:03	1
1135947	99	56	7,8	cyclictest	23	-21	ksoftirqd/1	23:30:02	1
1135947	99	56	11,11	cyclictest	23	-21	ksoftirqd/1	22:28:33	1
1135947	99	56	11,11	cyclictest	23	-21	ksoftirqd/1	22:28:33	1
1135940	99	56	5,4	cyclictest	13	1	rcu_preempt	20:45:02	0
1135940	99	56	27,22	cyclictest	0	-21	swapper/0	00:21:41	0
1135940	99	56	20,31	cyclictest	168	50	irq/134-8000000	22:33:50	0
1135940	99	56	19,32	cyclictest	168	50	irq/134-8000000	21:41:55	0
1135956	99	55	3,12	cyclictest	37	-21	ksoftirqd/3	00:05:00	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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