OSADL QA Farm on Real-time of Mainline Linux

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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 May 05, 2026 12:45:26)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1769399	99	75	35,9	cyclictest	3467602	-21	systemd-journal	12:20:00	0
1769399	99	75	35,9	cyclictest	3467602	-21	systemd-journal	12:20:00	0
1769399	99	71	40,22	cyclictest	12	-21	ksoftirqd/0	10:40:03	0
1769403	99	70	18,11	cyclictest	23	-21	ksoftirqd/1	07:35:00	1
1769399	99	70	22,30	cyclictest	12	-21	ksoftirqd/0	11:10:02	0
1769414	99	69	5,47	cyclictest	1814079	-21	ssh	10:30:02	3
1769399	99	69	11,33	cyclictest	1780524	-21	latency_hist	09:20:03	0
1769399	99	68	21,30	cyclictest	12	-21	ksoftirqd/0	12:34:25	0
1769414	99	67	11,10	cyclictest	37	-21	ksoftirqd/3	10:45:01	3
1769403	99	67	18,8	cyclictest	23	-21	ksoftirqd/1	09:10:00	1
1769403	99	66	2,27	cyclictest	1824038	-21	ssh	10:50:32	1
1769403	99	64	6,24	cyclictest	1790926	-21	ssh	09:41:45	1
1769399	99	64	7,43	cyclictest	168	50	irq/134-8000000	12:10:02	0
1769403	99	63	18,11	cyclictest	23	-21	ksoftirqd/1	08:00:01	1
1769403	99	63	17,11	cyclictest	23	-21	ksoftirqd/1	11:08:52	1
1769403	99	63	14,20	cyclictest	1871661	-21	ssh	12:29:50	1
1769403	99	63	14,20	cyclictest	1871661	-21	ssh	12:29:50	1
1769399	99	63	27,4	cyclictest	1775578	50	diskmemload	12:30:00	0
1769399	99	63	27,4	cyclictest	1775578	50	diskmemload	12:30:00	0
1769403	99	62	7,15	cyclictest	1874777	-21	ssh	12:35:57	1
1769403	99	62	15,10	cyclictest	23	-21	ksoftirqd/1	10:11:51	1
1769399	99	62	33,3	cyclictest	12	-21	ksoftirqd/0	09:23:06	0
1769410	99	61	3,28	cyclictest	1762570	-21	kworker/2:1	09:25:02	2
1769410	99	61	3,28	cyclictest	1762570	-21	kworker/2:1	09:25:02	2
1769403	99	61	9,15	cyclictest	1864305	-21	ssh	12:14:41	1
1769403	99	61	7,19	cyclictest	1830083	-21	sh	11:03:18	1
1769403	99	61	15,10	cyclictest	23	-21	ksoftirqd/1	10:40:29	1
1769399	99	61	1,42	cyclictest	13	1	rcu_preempt	09:19:21	0
1769414	99	60	13,12	cyclictest	37	-21	ksoftirqd/3	11:24:35	3
1769414	99	60	13,12	cyclictest	37	-21	ksoftirqd/3	11:24:35	3
1769403	99	60	8,15	cyclictest	1853763	-21	ssh	11:52:17	1
1769403	99	60	12,9	cyclictest	23	-21	ksoftirqd/1	09:29:51	1
1769403	99	60	12,9	cyclictest	23	-21	ksoftirqd/1	09:29:51	1
1769399	99	60	16,28	cyclictest	12	-21	ksoftirqd/0	11:51:03	0
1769399	99	60	15,4	cyclictest	12	-21	ksoftirqd/0	09:33:16	0
1769414	99	59	14,8	cyclictest	37	-21	ksoftirqd/3	08:50:01	3
1769414	99	59	11,9	cyclictest	37	-21	ksoftirqd/3	12:20:35	3
1769403	99	59	12,8	cyclictest	23	-21	ksoftirqd/1	12:05:00	1
1769403	99	59	10,19	cyclictest	1864751	-21	ssh	12:15:09	1
1769403	99	59	10,19	cyclictest	1864751	-21	ssh	12:15:09	1
1769410	99	58	40,8	cyclictest	1762570	-21	kworker/2:1	11:31:29	2
1769403	99	58	5,42	cyclictest	1840566	-21	ssh	11:25:02	1
1769403	99	58	5,42	cyclictest	1840566	-21	ssh	11:25:02	1
1769403	99	58	13,9	cyclictest	23	-21	ksoftirqd/1	11:36:33	1
1769403	99	58	13,8	cyclictest	23	-21	ksoftirqd/1	12:30:21	1
1769403	99	58	12,15	cyclictest	1836107	-21	ssh	11:15:36	1
1769399	99	58	20,34	cyclictest	12	-21	ksoftirqd/0	12:13:26	0
1769399	99	58	15,38	cyclictest	12	-21	ksoftirqd/0	10:17:16	0
1769403	99	57	8,17	cyclictest	1773212	-21	date	08:20:03	1
1769403	99	57	30,23	cyclictest	23	-21	ksoftirqd/1	11:35:02	1
1769403	99	57	12,15	cyclictest	1818574	-21	ssh	10:39:31	1
1769399	99	57	47,5	cyclictest	169	50	irq/224-8000000	11:25:02	0
1769399	99	57	47,5	cyclictest	169	50	irq/224-8000000	11:25:02	0
1769399	99	57	3,37	cyclictest	13	1	rcu_preempt	09:28:03	0
1769399	99	57	3,37	cyclictest	13	1	rcu_preempt	09:28:03	0
1769399	99	57	27,15	cyclictest	1804030	-21	ssh	10:09:19	0
1769399	99	57	14,38	cyclictest	1834488	-21	sshd	11:12:26	0
1769414	99	56	7,12	cyclictest	37	-21	ksoftirqd/3	10:18:24	3
1769414	99	56	16,8	cyclictest	37	-21	ksoftirqd/3	12:35:02	3
1769414	99	56	11,9	cyclictest	37	-21	ksoftirqd/3	11:08:51	3
1769403	99	56	7,14	cyclictest	1787337	-21	rm	09:34:36	1
1769403	99	56	6,15	cyclictest	1801840	-21	ssh	10:04:48	1
1769403	99	56	14,8	cyclictest	23	-21	ksoftirqd/1	11:12:35	1
1769403	99	56	13,14	cyclictest	1808419	-21	sh	10:18:19	1
1769403	99	56	13,10	cyclictest	23	-21	ksoftirqd/1	11:30:01	1
1769403	99	56	12,9	cyclictest	23	-21	ksoftirqd/1	09:50:51	1
1769403	99	56	12,8	cyclictest	23	-21	ksoftirqd/1	11:40:53	1
1769399	99	56	1,36	cyclictest	13	1	rcu_preempt	11:41:18	0
1769399	99	56	1,36	cyclictest	13	1	rcu_preempt	10:41:10	0
1769399	99	56	10,42	cyclictest	12	-21	ksoftirqd/0	10:47:28	0
1769410	99	55	47,5	cyclictest	1762570	-21	kworker/2:1	10:00:46	2
1769403	99	55	18,10	cyclictest	23	-21	ksoftirqd/1	11:56:49	1
1769403	99	55	18,10	cyclictest	23	-21	ksoftirqd/1	11:56:49	1
1769403	99	55	12,8	cyclictest	23	-21	ksoftirqd/1	09:19:06	1
1769403	99	55	12,8	cyclictest	23	-21	ksoftirqd/1	09:19:05	1
1769403	99	55	11,10	cyclictest	23	-21	ksoftirqd/1	10:30:00	1
1769403	99	55	0,15	cyclictest	1826377	-21	ssh	10:55:28	1
1769399	99	55	27,13	cyclictest	1828166	-21	ssh	10:59:34	0
1769399	99	55	23,6	cyclictest	12	-21	ksoftirqd/0	11:03:54	0
1769399	99	55	19,18	cyclictest	168	50	irq/134-8000000	11:33:20	0
1769399	99	55	19,17	cyclictest	168	50	irq/134-8000000	10:10:27	0
1769399	99	55	1,26	cyclictest	13	1	rcu_preempt	09:37:42	0
1769414	99	54	25,9	cyclictest	37	-21	ksoftirqd/3	11:48:09	3
1769414	99	54	18,6	cyclictest	37	-21	ksoftirqd/3	10:53:02	3
1769410	99	54	46,5	cyclictest	1762570	-21	kworker/2:1	08:45:02	2
1769403	99	54	4,17	cyclictest	1792911	-21	ssh	09:45:51	1
1769403	99	54	14,9	cyclictest	23	-21	ksoftirqd/1	09:39:42	1
1769403	99	54	12,9	cyclictest	23	-21	ksoftirqd/1	09:13:20	1
1769399	99	54	28,11	cyclictest	1792017	-21	ssh	09:44:21	0
1769399	99	54	20,6	cyclictest	168	50	irq/134-8000000	11:19:15	0
1769399	99	54	19,18	cyclictest	168	50	irq/134-8000000	10:26:05	0
1769399	99	54	13,23	cyclictest	12	-21	ksoftirqd/0	09:52:12	0
1769414	99	53	9,8	cyclictest	37	-21	ksoftirqd/3	09:39:44	3
1769414	99	53	6,8	cyclictest	37	-21	ksoftirqd/3	10:23:34	3
1769414	99	53	44,5	cyclictest	36	1	rcuc/3	12:00:09	3
1769414	99	53	19,8	cyclictest	37	-21	ksoftirqd/3	07:35:01	3
1769414	99	53	10,7	cyclictest	37	-21	ksoftirqd/3	11:27:45	3
1769410	99	53	45,5	cyclictest	1801913	-21	kworker/2:3	11:46:16	2
1769410	99	53	44,6	cyclictest	1801913	-21	kworker/2:3	11:12:47	2
1769410	99	53	44,5	cyclictest	1801913	-21	kworker/2:3	11:16:16	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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