OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, slot #7

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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rackcslot7s.osadl.org (updated Sat Dec 20, 2025 12:44:57)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
289236	2	110	0,5	sleep2	0	-21	swapper/2	08:05:14	2
268889	2	81	48,23	sleep3	0	-21	swapper/3	07:07:09	3
267945	2	76	44,22	sleep2	0	-21	swapper/2	07:05:16	2
1973	99	75	0,5	rtkit-daemon	0	-21	swapper/3	07:32:01	3
1973	99	74	0,6	rtkit-daemon	0	-21	swapper/3	07:16:29	3
1973	99	74	0,5	rtkit-daemon	0	-21	swapper/3	07:22:55	3
359495	2	73	0,3	sleep3	0	-21	swapper/3	11:25:16	3
268871	2	63	44,13	sleep0	0	-21	swapper/0	07:06:54	0
269107	2	62	40,14	sleep1	0	-21	swapper/1	07:09:56	1
1973	99	58	0,9	rtkit-daemon	1972	-21	rtkit-daemon	09:39:45	1
1973	99	58	0,9	rtkit-daemon	1972	-21	rtkit-daemon	09:39:45	1
1973	99	58	0,8	rtkit-daemon	1972	-21	rtkit-daemon	10:30:02	0
1973	99	58	0,8	rtkit-daemon	1972	-21	rtkit-daemon	10:30:01	0
269264	99	57	44,8	cyclictest	34	-21	ksoftirqd/2	08:28:59	2
1973	99	57	0,9	rtkit-daemon	1972	-21	rtkit-daemon	11:58:58	0
1973	99	57	0,8	rtkit-daemon	1972	-21	rtkit-daemon	09:10:33	0
1973	99	57	0,8	rtkit-daemon	1972	-21	rtkit-daemon	09:10:33	0
1973	99	56	0,8	rtkit-daemon	1972	-21	rtkit-daemon	09:34:32	1
1973	99	55	0,8	rtkit-daemon	1972	-21	rtkit-daemon	07:59:16	0
269255	99	54	2,10	cyclictest	2069	-21	gnome-shell	09:40:59	0
1973	99	54	0,9	rtkit-daemon	1972	-21	rtkit-daemon	10:02:24	1
1973	99	54	0,9	rtkit-daemon	1972	-21	rtkit-daemon	10:02:24	1
1973	99	54	0,8	rtkit-daemon	1972	-21	rtkit-daemon	12:25:42	0
1973	99	54	0,8	rtkit-daemon	1972	-21	rtkit-daemon	12:25:41	0
1973	99	54	0,8	rtkit-daemon	1972	-21	rtkit-daemon	12:14:35	0
1973	99	54	0,8	rtkit-daemon	1972	-21	rtkit-daemon	09:16:30	1
269264	99	53	2,10	cyclictest	2069	-21	gnome-shell	07:21:58	2
269260	99	53	4,46	cyclictest	23	1	irq_work/1	08:05:59	1
269260	99	53	2,41	cyclictest	2069	-21	gnome-shell	08:56:58	1
269260	99	53	1,48	cyclictest	2069	-21	gnome-shell	08:00:59	1
337892	2	52	0,6	chrt	4497	-21	PK-Backend	10:25:01	1
269264	99	52	38,10	cyclictest	2069	-21	gnome-shell	07:30:59	2
269264	99	52	2,46	cyclictest	2069	-21	gnome-shell	07:47:58	2
269264	99	52	2,10	cyclictest	2069	-21	gnome-shell	09:29:59	2
269260	99	52	38,10	cyclictest	1137	-21	runrttasks	07:22:58	1
269255	99	52	2,8	cyclictest	4497	-21	PK-Backend	09:04:59	0
269255	99	52	1,10	cyclictest	244891	-21	kworker/0:1	07:32:58	0
1973	99	52	0,8	rtkit-daemon	1972	-21	rtkit-daemon	10:00:34	0
1973	99	52	0,8	rtkit-daemon	1972	-21	rtkit-daemon	10:00:33	0
303400	2	51	0,7	chrt	0	-21	swapper/2	08:45:03	2
269269	99	51	38,9	cyclictest	2069	-21	gnome-shell	09:53:58	3
269264	99	51	9,37	cyclictest	2069	-21	gnome-shell	08:16:59	2
269264	99	51	1,18	cyclictest	1054	2	snmpd	08:53:01	2
269260	99	51	4,7	cyclictest	23	1	irq_work/1	09:46:58	1
269260	99	51	2,46	cyclictest	23	1	irq_work/1	08:48:59	1
269260	99	51	2,46	cyclictest	23	1	irq_work/1	08:48:58	1
269260	99	51	2,46	cyclictest	23	1	irq_work/1	08:33:59	1
269260	99	51	2,45	cyclictest	2069	-21	gnome-shell	07:15:58	1
269255	99	51	4,7	cyclictest	13	-21	ksoftirqd/0	09:33:58	0
269255	99	51	2,6	cyclictest	4497	-21	PK-Backend	08:17:58	0
269269	99	50	2,44	cyclictest	2069	-21	gnome-shell	08:28:58	3
269260	99	50	2,5	cyclictest	0	-21	swapper/1	07:44:58	1
269255	99	50	2,7	cyclictest	0	-21	swapper/0	07:25:58	0
269255	99	50	2,6	cyclictest	4497	-21	PK-Backend	08:32:58	0
269255	99	50	2,6	cyclictest	4497	-21	PK-Backend	08:14:59	0
269255	99	50	2,44	cyclictest	4497	-21	PK-Backend	09:51:58	0
269260	99	49	2,44	cyclictest	23	1	irq_work/1	09:43:58	1
269260	99	49	2,44	cyclictest	23	1	irq_work/1	08:25:59	1
269260	99	49	2,44	cyclictest	23	1	irq_work/1	07:52:58	1
269260	99	49	2,44	cyclictest	23	1	irq_work/1	07:49:58	1
269260	99	49	1,45	cyclictest	23	1	irq_work/1	07:13:59	1
269260	99	49	1,45	cyclictest	23	1	irq_work/1	07:13:59	1
269255	99	49	2,6	cyclictest	4497	-21	PK-Backend	08:41:58	0
269255	99	49	2,6	cyclictest	4497	-21	PK-Backend	07:41:59	0
269255	99	49	2,6	cyclictest	0	-21	swapper/0	07:21:59	0
269255	99	49	2,43	cyclictest	4497	-21	PK-Backend	08:29:58	0
269269	99	48	2,43	cyclictest	0	-21	swapper/3	08:33:58	3
269269	99	48	1,8	cyclictest	2069	-21	gnome-shell	09:30:58	3
269260	99	48	39,6	cyclictest	23	1	irq_work/1	08:37:58	1
269260	99	48	39,6	cyclictest	23	1	irq_work/1	08:22:58	1
269260	99	48	1,45	cyclictest	23	1	irq_work/1	08:13:58	1
269260	99	48	1,44	cyclictest	23	1	irq_work/1	09:01:58	1
269260	99	48	1,44	cyclictest	23	1	irq_work/1	07:34:59	1
269255	99	48	2,6	cyclictest	0	-21	swapper/0	07:35:58	0
269255	99	48	2,5	cyclictest	0	-21	swapper/0	09:08:58	0
269255	99	48	2,42	cyclictest	4497	-21	PK-Backend	09:58:58	0
269255	99	48	1,43	cyclictest	4497	-21	PK-Backend	07:45:59	0
269269	99	47	2,42	cyclictest	0	-21	swapper/3	08:58:59	3
269264	99	47	2,43	cyclictest	0	-21	swapper/2	09:15:58	2
269264	99	47	2,42	cyclictest	0	-21	swapper/2	07:54:59	2
269260	99	47	39,5	cyclictest	4497	-21	PK-Backend	08:53:59	1
269255	99	47	40,4	cyclictest	0	-21	swapper/0	08:50:58	0
269255	99	47	1,5	cyclictest	4497	-21	PK-Backend	08:23:58	0
269255	99	47	1,37	cyclictest	4497	-21	PK-Backend	09:46:59	0
269269	99	46	38,5	cyclictest	42	-21	ksoftirqd/3	09:29:59	3
269264	99	46	2,41	cyclictest	0	-21	swapper/2	08:04:58	2
269260	99	46	38,5	cyclictest	23	1	irq_work/1	09:28:58	1
269260	99	46	38,5	cyclictest	0	-21	swapper/1	07:57:59	1
269260	99	46	37,6	cyclictest	23	1	irq_work/1	08:43:58	1
269260	99	46	1,43	cyclictest	23	1	irq_work/1	09:22:58	1
269260	99	46	10,19	cyclictest	26	-21	ksoftirqd/1	11:20:00	1
269255	99	46	39,4	cyclictest	4497	-21	PK-Backend	09:24:59	0
269255	99	46	39,4	cyclictest	4497	-21	PK-Backend	09:16:59	0
269269	99	45	5,35	cyclictest	2069	-21	gnome-shell	09:04:59	3
269269	99	45	35,7	cyclictest	269249	-21	cyclictest	09:56:58	3
269269	99	45	33,8	cyclictest	2069	-21	gnome-shell	09:44:59	3
269269	99	45	33,8	cyclictest	2069	-21	gnome-shell	08:42:59	3
269269	99	45	2,41	cyclictest	0	-21	swapper/3	08:13:59	3
269269	99	45	2,41	cyclictest	0	-21	swapper/3	08:00:58	3
269264	99	45	39,4	cyclictest	0	-21	swapper/2	08:10:58	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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