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 Thu May 28, 2026 00:44:15)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1892527	2	188	0,3	sleep3	75	-21	kworker/3:1+events	21:10:48	3
1817962	2	159	0,2	sleep3	47	1	rcuc/3	19:55:48	3
1769256	99	84	73,8	cyclictest	1924755	-21	kworker/u8:2+flush-8:0	23:55:56	1
1769256	99	70	65,3	cyclictest	1737170	-21	kworker/u8:3+events_unbound	19:25:51	1
1769256	99	70	58,10	cyclictest	1869499	-21	ntpq	20:45:56	1
1769254	99	69	65,3	cyclictest	1769092	-21	kworker/u8:0+events_unbound	19:55:57	0
1769256	99	68	61,4	cyclictest	1890044	-21	kworker/u8:1+events_unbound	22:50:43	1
1769256	99	68	61,4	cyclictest	1890044	-21	kworker/u8:1+events_unbound	22:50:43	1
1769254	99	68	64,3	cyclictest	1945299	-21	kworker/u8:0+events_unbound	22:15:51	0
1769256	99	67	55,9	cyclictest	1704890	-21	systemd-journal	19:15:01	1
1769256	99	66	61,4	cyclictest	2079158	-21	kworker/u8:2+events_unbound	00:30:52	1
1769256	99	66	60,4	cyclictest	2009693	-21	kworker/u8:3+flush-8:0	23:35:57	1
1769256	99	65	59,5	cyclictest	1737170	-21	kworker/u8:3+events_unbound	19:35:59	1
1769256	99	65	59,4	cyclictest	1924755	-21	kworker/u8:2+flush-8:0	22:00:55	1
1769256	99	65	54,8	cyclictest	2079476	-21	latency_hist	00:20:01	1
1769254	99	65	61,3	cyclictest	1870523	-21	kworker/u8:2+events_unbound	21:30:57	0
1769256	99	64	60,3	cyclictest	1975108	-21	kworker/u8:3+flush-8:0	22:45:59	1
1769256	99	64	58,5	cyclictest	2000356	-21	kworker/u8:0+flush-8:0	23:25:56	1
1769256	99	64	56,6	cyclictest	1945299	-21	kworker/u8:0+events_unbound	22:30:57	1
1769254	99	64	61,2	cyclictest	2000356	-21	kworker/u8:0+events_unbound	23:25:55	0
1769254	99	64	60,3	cyclictest	1865382	-21	kworker/u8:0+events_unbound	21:00:58	0
1769254	99	64	59,4	cyclictest	1737170	-21	kworker/u8:3+events_unbound	19:25:42	0
1769256	99	63	57,4	cyclictest	1865382	-21	kworker/u8:0+events_unbound	21:15:53	1
1769254	99	63	59,3	cyclictest	1924755	-21	kworker/u8:2+events_unbound	22:35:56	0
1769254	99	63	59,3	cyclictest	1890044	-21	kworker/u8:1+events_unbound	21:40:57	0
1769256	99	62	57,4	cyclictest	2000356	-21	kworker/u8:0+flush-8:0	23:15:55	1
1769256	99	62	56,5	cyclictest	1909828	-21	kworker/u8:3+events_unbound	21:45:55	1
1769256	99	62	56,4	cyclictest	2059715	-21	kworker/u8:1+events_unbound	00:20:54	1
1769254	99	62	58,3	cyclictest	2079158	-21	kworker/u8:2+events_unbound	00:30:42	0
1769254	99	62	58,3	cyclictest	2009693	-21	kworker/u8:3+events_unbound	23:10:41	0
1769254	99	62	58,3	cyclictest	2009693	-21	kworker/u8:3+events_unbound	23:10:40	0
1769254	99	62	58,3	cyclictest	1945299	-21	kworker/u8:0+events_unbound	22:10:43	0
1769254	99	62	54,6	cyclictest	1964167	-21	ntpq	22:20:52	0
1769254	99	62	54,3	cyclictest	1737170	-21	kworker/u8:3+events_unbound	19:20:42	0
1969768	2	61	0,3	sleep3	75	-21	kworker/3:1+events	22:26:00	3
1769254	99	61	57,3	cyclictest	2089853	-21	kworker/u8:3+events_unbound	00:35:56	0
1769254	99	61	57,3	cyclictest	2009693	-21	kworker/u8:3+events_unbound	23:35:41	0
1769254	99	61	57,3	cyclictest	1924755	-21	kworker/u8:2+events_unbound	23:45:52	0
1769254	99	61	57,3	cyclictest	1769092	-21	kworker/u8:0+events_unbound	19:40:58	0
1769254	99	60	56,3	cyclictest	1890044	-21	kworker/u8:1+events_unbound	21:55:40	0
1974654	2	59	0,6	chrt	0	-21	swapper/2	22:30:55	2
1769256	99	59	54,4	cyclictest	2040133	-21	kworker/u8:0+flush-8:0	00:06:00	1
1769256	99	59	54,3	cyclictest	1865382	-21	kworker/u8:0+events_unbound	21:25:53	1
1769254	99	59	55,3	cyclictest	1737177	-21	kworker/u8:4+events_unbound	20:10:42	0
1769254	99	59	55,3	cyclictest	1737177	-21	kworker/u8:4+events_unbound	20:10:41	0
1769260	99	58	39,17	cyclictest	1970465	-21	cp	22:30:01	2
1769256	99	58	54,3	cyclictest	1945299	-21	kworker/u8:0+events_unbound	22:15:53	1
1769256	99	58	53,3	cyclictest	1769092	-21	kworker/u8:0+events_unbound	19:40:42	1
1769256	99	57	53,3	cyclictest	2009693	-21	kworker/u8:3+events_unbound	23:10:52	1
1769256	99	57	53,3	cyclictest	2009693	-21	kworker/u8:3+events_unbound	23:10:51	1
1769256	99	57	52,4	cyclictest	1835883	-21	kworker/u8:0+events_unbound	20:15:54	1
1769256	99	57	52,3	cyclictest	2009693	-21	kworker/u8:3+flush-8:0	23:50:53	1
1769256	99	57	52,3	cyclictest	2000356	-21	kworker/u8:0+flush-8:0	23:20:58	1
1769256	99	57	51,4	cyclictest	1975108	-21	kworker/u8:3+flush-8:0	22:40:52	1
1769254	99	57	53,3	cyclictest	1835883	-21	kworker/u8:0+events_unbound	20:20:43	0
1769254	99	57	53,3	cyclictest	1769092	-21	kworker/u8:0+events_unbound	19:50:43	0
1769256	99	56	49,5	cyclictest	1890044	-21	kworker/u8:1+events_unbound	21:40:53	1
1769256	99	56	48,5	cyclictest	1924755	-21	kworker/u8:2+events_unbound	23:30:43	1
1769254	99	56	52,3	cyclictest	2009693	-21	kworker/u8:3+events_unbound	00:06:02	0
1769254	99	56	52,3	cyclictest	1945299	-21	kworker/u8:0+events_unbound	22:25:03	0
1769254	99	56	52,3	cyclictest	1909828	-21	kworker/u8:3+events_unbound	21:45:41	0
1769254	99	56	52,3	cyclictest	1865382	-21	kworker/u8:0+events_unbound	21:26:00	0
1769254	99	56	52,3	cyclictest	1865382	-21	kworker/u8:0+events_unbound	21:05:46	0
1769254	99	56	52,3	cyclictest	1850749	-21	kworker/u8:1+events_unbound	20:36:01	0
1769254	99	56	47,3	cyclictest	1737170	-21	kworker/u8:3+events_unbound	20:05:44	0
1793323	2	55	0,3	sleep3	75	-21	kworker/3:1-events	19:30:47	3
1769256	99	55	51,3	cyclictest	1870523	-21	kworker/u8:2+events_unbound	21:30:41	1
1769256	99	55	50,3	cyclictest	2040133	-21	kworker/u8:0+events_unbound	00:10:51	1
1769256	99	55	49,5	cyclictest	1737170	-21	kworker/u8:3+flush-8:0	19:30:52	1
1769254	99	55	51,3	cyclictest	2000356	-21	kworker/u8:0+events_unbound	23:15:59	0
1769254	99	55	51,3	cyclictest	1924755	-21	kworker/u8:2+events_unbound	23:30:47	0
1769254	99	55	51,3	cyclictest	1924755	-21	kworker/u8:2+events_unbound	22:40:56	0
1769254	99	55	51,3	cyclictest	1835883	-21	kworker/u8:0+events_unbound	20:25:46	0
1769256	99	54	50,3	cyclictest	1890044	-21	kworker/u8:1+flush-8:0	21:20:44	1
1769256	99	54	50,3	cyclictest	1865382	-21	kworker/u8:0+events_unbound	21:00:54	1
1769256	99	54	50,3	cyclictest	1769092	-21	kworker/u8:0+events_unbound	19:55:41	1
1769256	99	54	50,3	cyclictest	1737177	-21	kworker/u8:4+flush-8:0	20:31:00	1
1769256	99	54	50,3	cyclictest	1737177	-21	kworker/u8:4+events_unbound	19:10:46	1
1769256	99	54	49,4	cyclictest	1865382	-21	kworker/u8:0+flush-8:0	21:10:54	1
1769256	99	54	48,4	cyclictest	1924755	-21	kworker/u8:2+events_unbound	22:20:54	1
1769254	99	54	50,3	cyclictest	2000356	-21	kworker/u8:0+events_unbound	23:20:45	0
1769256	99	53	48,4	cyclictest	1737177	-21	kworker/u8:4+flush-8:0	20:10:54	1
1769256	99	53	48,4	cyclictest	1737177	-21	kworker/u8:4+flush-8:0	20:10:53	1
1769256	99	53	47,4	cyclictest	1737170	-21	kworker/u8:3+flush-8:0	20:00:55	1
1769256	99	53	45,6	cyclictest	1890044	-21	kworker/u8:1+flush-8:0	21:50:53	1
1769254	99	53	50,2	cyclictest	1870523	-21	kworker/u8:2+events_unbound	21:35:04	0
1769254	99	53	49,3	cyclictest	1769092	-21	kworker/u8:0+events_unbound	19:45:59	0
1769256	99	52	44,6	cyclictest	1924755	-21	kworker/u8:2+flush-8:0	22:10:57	1
1769256	99	52	43,7	cyclictest	1844761	-21	ntpq	20:20:57	1
1769254	99	52	48,3	cyclictest	2040133	-21	kworker/u8:0+events_unbound	00:11:02	0
1769260	99	51	41,7	cyclictest	1704890	-21	systemd-journal	21:55:01	2
1769256	99	51	47,3	cyclictest	1924755	-21	kworker/u8:2+flush-8:0	22:25:44	1
1769256	99	51	47,3	cyclictest	1865382	-21	kworker/u8:0+flush-8:0	21:05:58	1
1769256	99	51	46,4	cyclictest	2040133	-21	kworker/u8:0+events_unbound	00:00:56	1
1769254	99	51	47,3	cyclictest	1890044	-21	kworker/u8:1+events_unbound	22:05:45	0
1769254	99	51	47,3	cyclictest	1769092	-21	kworker/u8:0+events_unbound	19:36:03	0
1769256	99	50	46,3	cyclictest	2089853	-21	kworker/u8:3+flush-8:0	00:35:53	1
1769256	99	50	45,4	cyclictest	1909828	-21	kworker/u8:3+events_unbound	21:35:59	1
1769256	99	50	45,3	cyclictest	1737170	-21	kworker/u8:3+events_unbound	19:45:52	1
1769254	99	50	47,2	cyclictest	1769092	-21	kworker/u8:0+events_unbound	19:16:15	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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