OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: ondemand
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack5slot4s.osadl.org (updated Tue Dec 02, 2025 12:44:14)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1736967	2	80	0,3	chrt	0	-21	swapper/0	12:30:01	0
1450101	2	77	0,5	sleep3	0	-21	swapper/3	07:41:13	3
1417146	99	66	60,5	cyclictest	1538384	-21	kworker/u8:2+flush-8:0	09:11:26	1
1417146	99	63	58,3	cyclictest	1463813	-21	kworker/u8:3+flush-8:0	08:31:24	1
1417146	99	61	57,3	cyclictest	1498015	-21	kworker/u8:0+flush-8:0	08:51:21	1
1417144	99	61	50,4	cyclictest	1741723	-21	kworker/u8:0+events_unbound	12:36:22	0
1417144	99	59	53,4	cyclictest	32602	-21	kworker/u8:1+events_unbound	07:36:31	0
1417146	99	58	53,3	cyclictest	1617272	-21	kworker/u8:2+events_unbound	11:11:26	1
1417144	99	58	53,3	cyclictest	1463813	-21	kworker/u8:3+events_unbound	08:00:01	0
1417144	99	58	52,4	cyclictest	1691952	-21	kworker/u8:1+events_unbound	12:06:22	0
1417144	99	58	52,4	cyclictest	1503715	-21	kworker/u8:2+events_unbound	08:41:21	0
1417146	99	57	52,4	cyclictest	32602	-21	kworker/u8:1+flush-8:0	08:36:25	1
1417146	99	57	52,3	cyclictest	1375309	-21	kworker/u8:2+events_unbound	07:15:05	1
1417144	99	57	52,3	cyclictest	1691952	-21	kworker/u8:1+events_unbound	11:56:25	0
1417144	99	57	52,3	cyclictest	1617272	-21	kworker/u8:2+events_unbound	12:31:08	0
1417144	99	57	51,4	cyclictest	1707275	-21	kworker/u8:0+events_unbound	12:01:20	0
1417144	99	57	48,3	cyclictest	1617272	-21	kworker/u8:2+events_unbound	11:06:10	0
1417144	99	56	51,4	cyclictest	1412045	-21	kworker/u8:0+flush-8:0	07:41:22	0
1605098	2	55	0,5	sleep3	0	-21	swapper/3	10:16:16	3
1417144	99	55	51,3	cyclictest	32602	-21	kworker/u8:1+flush-8:0	07:16:24	0
1417144	99	55	50,3	cyclictest	32602	-21	kworker/u8:1+events_unbound	07:26:20	0
1417144	99	55	44,8	cyclictest	1641635	-21	ntpq	10:51:18	0
1417146	99	54	50,3	cyclictest	1412045	-21	kworker/u8:0+events_unbound	07:41:21	1
1417144	99	54	49,4	cyclictest	1523533	-21	kworker/u8:1+events_unbound	09:01:22	0
1417144	99	54	42,4	cyclictest	1547797	-21	kworker/u8:1+events_unbound	10:46:22	0
1417146	99	53	46,5	cyclictest	1558377	-21	kworker/u8:2+events_unbound	09:41:27	1
1417146	99	53	46,4	cyclictest	1453902	-21	kworker/u8:2+flush-8:0	07:51:17	1
1417146	99	53	46,3	cyclictest	1667737	-21	kworker/u8:0+events_unbound	11:41:26	1
1417144	99	53	50,2	cyclictest	1617272	-21	kworker/u8:2+flush-8:0	12:21:26	0
1417144	99	53	46,5	cyclictest	1617272	-21	kworker/u8:2+flush-8:0	10:56:22	0
1417146	99	52	48,3	cyclictest	32602	-21	kworker/u8:1+events_unbound	07:11:13	1
1417146	99	52	48,3	cyclictest	32602	-21	kworker/u8:1+events_unbound	07:11:13	1
1417146	99	52	47,4	cyclictest	1412045	-21	kworker/u8:0+events_unbound	07:21:21	1
1417146	99	52	46,4	cyclictest	1741723	-21	kworker/u8:0+events_unbound	12:36:27	1
1417146	99	52	45,5	cyclictest	1547797	-21	kworker/u8:1+flush-8:0	10:11:19	1
1417144	99	52	46,4	cyclictest	1412045	-21	kworker/u8:0+events_unbound	08:01:24	0
1417146	99	51	47,2	cyclictest	1617272	-21	kworker/u8:2+events_unbound	10:56:19	1
1417146	99	51	45,5	cyclictest	1691952	-21	kworker/u8:1+flush-8:0	12:01:17	1
1417144	99	51	46,4	cyclictest	1652131	-21	kworker/u8:3+flush-8:0	11:16:25	0
1417144	99	51	46,4	cyclictest	1547797	-21	kworker/u8:1+flush-8:0	10:26:27	0
1417144	99	51	46,4	cyclictest	1547797	-21	kworker/u8:1+events_unbound	10:06:23	0
1417144	99	51	46,4	cyclictest	1463813	-21	kworker/u8:3+flush-8:0	10:21:27	0
1417144	99	51	43,7	cyclictest	1691952	-21	kworker/u8:1+flush-8:0	11:51:20	0
1417146	99	50	46,3	cyclictest	1488597	-21	kworker/u8:2+flush-8:0	08:21:22	1
1417146	99	50	45,4	cyclictest	1547797	-21	kworker/u8:1+flush-8:0	10:26:25	1
1417146	99	50	44,4	cyclictest	1652131	-21	kworker/u8:3+flush-8:0	11:16:26	1
1417146	99	50	44,3	cyclictest	1617272	-21	kworker/u8:2+flush-8:0	12:11:19	1
1417146	99	50	40,4	cyclictest	1667737	-21	kworker/u8:0+flush-8:0	11:31:22	1
1417144	99	50	46,3	cyclictest	1498015	-21	kworker/u8:0+flush-8:0	08:56:27	0
1417144	99	50	45,4	cyclictest	1523533	-21	kworker/u8:1+flush-8:0	09:06:19	0
1417144	99	50	45,3	cyclictest	1498015	-21	kworker/u8:0+flush-8:0	09:21:12	0
1417144	99	50	44,4	cyclictest	1538384	-21	kworker/u8:2+events_unbound	09:11:21	0
1417146	99	49	45,3	cyclictest	1547797	-21	kworker/u8:1+flush-8:0	11:21:26	1
1417144	99	49	44,3	cyclictest	1547797	-21	kworker/u8:1+flush-8:0	11:21:15	0
1417146	99	48	44,3	cyclictest	32602	-21	kworker/u8:1+events_unbound	08:01:06	1
1417146	99	48	44,3	cyclictest	1691952	-21	kworker/u8:1+flush-8:0	12:06:21	1
1417146	99	48	43,4	cyclictest	1498015	-21	kworker/u8:0+events_unbound	09:21:25	1
1417146	99	48	42,5	cyclictest	1547797	-21	kworker/u8:1+flush-8:0	09:51:25	1
1417146	99	48	42,5	cyclictest	1463813	-21	kworker/u8:3+events_unbound	09:46:24	1
1417146	99	48	41,6	cyclictest	1463813	-21	kworker/u8:3+flush-8:0	10:21:17	1
1417144	99	48	44,3	cyclictest	32602	-21	kworker/u8:1+flush-8:0	08:16:13	0
1417144	99	48	43,4	cyclictest	1538384	-21	kworker/u8:2+events_unbound	09:16:15	0
1417144	99	48	43,4	cyclictest	1412045	-21	kworker/u8:0+flush-8:0	07:21:13	0
1417144	99	48	43,3	cyclictest	1617272	-21	kworker/u8:2+flush-8:0	11:11:28	0
1417144	99	48	42,5	cyclictest	1498015	-21	kworker/u8:0+events_unbound	08:51:21	0
1417146	99	47	43,3	cyclictest	1375309	-21	kworker/u8:2+events_unbound	07:31:24	1
1417146	99	47	42,3	cyclictest	1498015	-21	kworker/u8:0+flush-8:0	09:31:22	1
1417146	99	47	41,4	cyclictest	1617272	-21	kworker/u8:2+flush-8:0	11:36:22	1
1417146	99	47	39,5	cyclictest	282	-21	systemd-journal	12:26:12	1
1417146	99	46	42,3	cyclictest	1727289	-21	kworker/u8:3+events_unbound	12:21:10	1
1417146	99	46	41,4	cyclictest	1503715	-21	kworker/u8:2+flush-8:0	08:41:22	1
1417144	99	46	42,3	cyclictest	1667737	-21	kworker/u8:0+events_unbound	11:41:22	0
1417144	99	46	39,5	cyclictest	1492457	-21	ntpq	08:21:17	0
1417146	99	45	40,4	cyclictest	1412045	-21	kworker/u8:0+events_unbound	08:16:23	1
1417144	99	45	41,3	cyclictest	1617272	-21	kworker/u8:2+flush-8:0	11:26:17	0
1417144	99	45	41,3	cyclictest	1547797	-21	kworker/u8:1+flush-8:0	09:46:14	0
1417144	99	45	41,3	cyclictest	1498015	-21	kworker/u8:0+events_unbound	08:46:26	0
1417144	99	45	40,4	cyclictest	1677118	-21	kworker/u8:3+flush-8:0	11:46:14	0
1417144	99	45	39,4	cyclictest	1617272	-21	kworker/u8:2+flush-8:0	12:16:25	0
1417144	99	45	39,4	cyclictest	1547797	-21	kworker/u8:1+events_unbound	10:05:01	0
1417144	99	45	39,4	cyclictest	1498015	-21	kworker/u8:0+events_unbound	09:36:22	0
1417144	99	45	38,5	cyclictest	1412045	-21	kworker/u8:0+events_unbound	07:46:20	0
1417146	99	44	38,4	cyclictest	1617272	-21	kworker/u8:2+flush-8:0	11:46:22	1
1417146	99	44	38,4	cyclictest	1547797	-21	kworker/u8:1+flush-8:0	10:31:27	1
1417146	99	44	35,5	cyclictest	1463813	-21	kworker/u8:3+events_unbound	09:26:20	1
1417144	99	44	40,3	cyclictest	1547797	-21	kworker/u8:1+flush-8:0	10:31:27	0
1417144	99	44	39,4	cyclictest	1547797	-21	kworker/u8:1+events_unbound	10:11:21	0
1417144	99	44	38,4	cyclictest	32602	-21	kworker/u8:1+events_unbound	08:36:27	0
1417144	99	44	33,8	cyclictest	1582026	-21	ntpq	09:51:19	0
1417146	99	43	38,4	cyclictest	1596956	-21	kworker/u8:0+flush-8:0	10:36:21	1
1417146	99	43	37,4	cyclictest	1463813	-21	kworker/u8:3+flush-8:0	09:56:17	1
1417144	99	43	39,3	cyclictest	1667737	-21	kworker/u8:0+flush-8:0	11:31:24	0
1417144	99	43	39,3	cyclictest	1617272	-21	kworker/u8:2+flush-8:0	11:01:20	0
1417144	99	43	39,3	cyclictest	1547797	-21	kworker/u8:1+events_unbound	09:41:34	0
1417144	99	43	39,2	cyclictest	1617272	-21	kworker/u8:2+events_unbound	12:11:23	0
1417144	99	43	37,4	cyclictest	1558377	-21	kworker/u8:2+flush-8:0	09:31:18	0
1417144	99	43	35,6	cyclictest	1463813	-21	kworker/u8:3+events_unbound	08:31:04	0
1417146	99	42	36,4	cyclictest	1513976	-21	apt-get	08:46:07	1
1417144	99	42	38,3	cyclictest	32602	-21	kworker/u8:1+events_unbound	08:06:15	0
1417144	99	42	38,3	cyclictest	1596956	-21	kworker/u8:0+flush-8:0	10:36:15	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17