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 Sat Jun 13, 2026 00:44:13)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2899654	2	191	0,5	sleep3	0	-21	swapper/3	00:25:35	3
2582537	99	84	76,5	cyclictest	2734609	-21	kworker/u8:1+flush-8:0	22:00:46	1
2895429	2	79	0,5	sleep2	0	-21	swapper/2	00:20:37	2
2582537	99	78	70,6	cyclictest	2728969	-21	kworker/u8:3+events_unbound	21:40:45	1
2582537	99	72	66,4	cyclictest	2558222	-21	kworker/u8:1+events_unbound	20:00:00	1
2582537	99	72	64,6	cyclictest	2758950	-21	kworker/u8:3+flush-8:0	23:20:43	1
2582534	99	70	66,3	cyclictest	1641715	-21	kworker/u8:0+events_unbound	19:25:43	0
2582534	99	69	65,3	cyclictest	2734609	-21	kworker/u8:1+events_unbound	22:10:28	0
2582534	99	69	65,3	cyclictest	1641715	-21	kworker/u8:0+events_unbound	19:50:45	0
2582534	99	68	64,3	cyclictest	2558222	-21	kworker/u8:1+events_unbound	19:40:30	0
2582537	99	67	62,4	cyclictest	2734609	-21	kworker/u8:1+events_unbound	22:35:40	1
2582542	99	66	54,9	cyclictest	2907231	-21	ntpq	00:30:42	2
2582534	99	66	62,3	cyclictest	2758950	-21	kworker/u8:3+events_unbound	23:45:29	0
2582534	99	66	62,3	cyclictest	1641715	-21	kworker/u8:0+events_unbound	19:45:38	0
2740409	2	65	0,2	sleep3	47	1	rcuc/3	21:45:34	3
2582537	99	65	59,4	cyclictest	2769053	-21	kworker/u8:0+flush-8:0	22:25:46	1
2582537	99	65	59,4	cyclictest	1641715	-21	kworker/u8:0+events_unbound	20:15:44	1
2582534	99	65	61,3	cyclictest	2683954	-21	kworker/u8:2+events_unbound	21:25:30	0
2582537	99	64	57,5	cyclictest	2758950	-21	kworker/u8:3+events_unbound	23:35:41	1
2582537	99	64	56,6	cyclictest	2803679	-21	/usr/sbin/munin	22:50:39	1
2582537	99	63	59,3	cyclictest	2728969	-21	kworker/u8:3+events_unbound	21:50:39	1
2582537	99	63	58,3	cyclictest	2558222	-21	kworker/u8:1+flush-8:0	20:10:45	1
2582537	99	63	57,4	cyclictest	2683954	-21	kworker/u8:2+flush-8:0	21:55:45	1
2582537	99	63	56,4	cyclictest	2758950	-21	kworker/u8:3+flush-8:0	23:45:37	1
2582537	99	63	53,8	cyclictest	2599619	-21	/usr/sbin/munin	19:25:36	1
2582534	99	63	58,4	cyclictest	2694052	-21	kworker/u8:3+flush-8:0	21:05:44	0
2582537	99	62	58,3	cyclictest	2558222	-21	kworker/u8:1+events_unbound	20:05:42	1
2582534	99	62	57,4	cyclictest	2728969	-21	kworker/u8:3+events_unbound	21:50:47	0
2582537	99	60	55,4	cyclictest	2694052	-21	kworker/u8:3+events_unbound	21:05:42	1
2582537	99	60	54,5	cyclictest	2683954	-21	kworker/u8:2+flush-8:0	21:25:41	1
2582537	99	60	54,4	cyclictest	2769053	-21	kworker/u8:0+events_unbound	22:45:29	1
2582534	99	60	56,3	cyclictest	2683954	-21	kworker/u8:2+events_unbound	21:55:48	0
2582542	99	58	47,9	cyclictest	1704890	-21	systemd-journal	19:50:41	2
2582537	99	58	53,3	cyclictest	2734609	-21	kworker/u8:1+flush-8:0	23:30:46	1
2582537	99	57	52,4	cyclictest	2734609	-21	kworker/u8:1+events_unbound	00:25:39	1
2582537	99	57	47,8	cyclictest	2674298	-21	/usr/sbin/munin	20:40:38	1
2582534	99	57	52,4	cyclictest	2734609	-21	kworker/u8:1+events_unbound	22:00:49	0
2582537	99	56	51,4	cyclictest	1641715	-21	kworker/u8:0+flush-8:0	20:35:35	1
2582537	99	56	51,3	cyclictest	2758950	-21	kworker/u8:3+events_unbound	00:00:31	1
2582537	99	55	48,5	cyclictest	1641715	-21	kworker/u8:0+events_unbound	19:35:44	1
2582537	99	55	47,6	cyclictest	2855956	-21	kworker/u8:2+events_unbound	00:10:50	1
2582534	99	55	45,8	cyclictest	2907180	-21	ntpq	00:30:40	0
2582537	99	54	48,4	cyclictest	1641715	-21	kworker/u8:0+flush-8:0	20:45:41	1
2582537	99	54	48,4	cyclictest	1641715	-21	kworker/u8:0+flush-8:0	19:45:40	1
2582537	99	54	47,5	cyclictest	2803089	-21	kworker/u8:2+events_unbound	23:05:29	1
2582537	99	54	46,6	cyclictest	2614445	-21	/usr/sbin/munin	19:40:45	1
2582534	99	54	50,3	cyclictest	1641715	-21	kworker/u8:0+events_unbound	20:45:33	0
2802393	2	53	0,3	chrt	0	-21	swapper/2	22:45:38	2
2582537	99	53	49,3	cyclictest	2855956	-21	kworker/u8:2+flush-8:0	23:55:42	1
2582537	99	53	49,3	cyclictest	2683954	-21	kworker/u8:2+flush-8:0	21:00:44	1
2582537	99	53	49,3	cyclictest	2683954	-21	kworker/u8:2+events_unbound	21:10:41	1
2582537	99	53	48,3	cyclictest	1641715	-21	kworker/u8:0+events_unbound	20:00:44	1
2582537	99	53	47,4	cyclictest	2855956	-21	kworker/u8:2+flush-8:0	00:05:51	1
2582537	99	53	46,6	cyclictest	2703950	-21	kworker/u8:0+flush-8:0	21:15:42	1
2582537	99	53	46,5	cyclictest	2769053	-21	kworker/u8:0+events_unbound	22:15:40	1
2582534	99	53	49,3	cyclictest	2683954	-21	kworker/u8:2+events_unbound	21:15:03	0
2582534	99	53	44,4	cyclictest	2769053	-21	kworker/u8:0+events_unbound	22:15:32	0
2582534	99	53	42,8	cyclictest	2724290	-21	/usr/sbin/munin	21:30:36	0
2582537	99	52	47,3	cyclictest	1641715	-21	kworker/u8:0+flush-8:0	19:50:36	1
2582537	99	52	45,4	cyclictest	2703950	-21	kworker/u8:0+flush-8:0	21:30:31	1
2582534	99	52	48,3	cyclictest	2558222	-21	kworker/u8:1+events_unbound	19:20:35	0
2582537	99	51	44,6	cyclictest	2558222	-21	kworker/u8:1+flush-8:0	20:25:41	1
2582542	99	50	44,4	cyclictest	2758950	-21	kworker/u8:3+flush-8:0	23:10:45	2
2582537	99	50	46,3	cyclictest	2758950	-21	kworker/u8:3+events_unbound	22:05:44	1
2582537	99	50	46,3	cyclictest	2728969	-21	kworker/u8:3+events_unbound	21:35:42	1
2582537	99	50	45,3	cyclictest	2803089	-21	kworker/u8:2+flush-8:0	23:15:45	1
2582534	99	50	46,3	cyclictest	2558222	-21	kworker/u8:1+events_unbound	20:05:49	0
2582537	99	49	44,4	cyclictest	2855956	-21	kworker/u8:2+flush-8:0	00:20:42	1
2582537	99	49	44,3	cyclictest	1641715	-21	kworker/u8:0+flush-8:0	20:55:35	1
2582537	99	49	43,5	cyclictest	2728969	-21	kworker/u8:3+events_unbound	21:45:41	1
2582534	99	49	45,3	cyclictest	2848010	-21	kworker/u8:0+events_unbound	00:13:44	0
2582534	99	49	45,3	cyclictest	2758950	-21	kworker/u8:3+events_unbound	22:20:47	0
2582542	99	48	43,3	cyclictest	2558222	-21	kworker/u8:1+events_unbound	20:30:47	2
2582537	99	48	43,3	cyclictest	2758950	-21	kworker/u8:3+events_unbound	23:00:45	1
2582534	99	48	44,3	cyclictest	2758950	-21	kworker/u8:3+events_unbound	23:00:32	0
2582534	99	48	40,6	cyclictest	2823461	-21	apt-get	23:10:03	0
2582534	99	48	40,3	cyclictest	2683954	-21	kworker/u8:2+events_unbound	21:01:39	0
2582534	99	48	35,9	cyclictest	2873435	-21	cp	00:00:00	0
2582537	99	47	43,3	cyclictest	2769053	-21	kworker/u8:0+events_unbound	22:20:33	1
2582537	99	47	43,3	cyclictest	2558222	-21	kworker/u8:1+flush-8:0	20:50:30	1
2582537	99	47	42,3	cyclictest	2758950	-21	kworker/u8:3+events_unbound	22:55:30	1
2582537	99	47	42,3	cyclictest	2558222	-21	kworker/u8:1+events_unbound	19:35:01	1
2582537	99	47	40,5	cyclictest	2863484	-21	/usr/sbin/munin	23:50:37	1
2582534	99	47	42,4	cyclictest	1641715	-21	kworker/u8:0+events_unbound	19:57:41	0
2582542	99	46	42,3	cyclictest	2855956	-21	kworker/u8:2+events_unbound	00:00:49	2
2582537	99	46	41,4	cyclictest	2769053	-21	kworker/u8:0+events_unbound	22:40:27	1
2582534	99	46	42,3	cyclictest	2803089	-21	kworker/u8:2+events_unbound	23:05:48	0
2582534	99	46	42,3	cyclictest	2734609	-21	kworker/u8:1+events_unbound	00:36:43	0
2582534	99	46	37,7	cyclictest	2792670	-21	ntpq	22:35:38	0
2582534	99	46	35,8	cyclictest	2857605	-21	python3	23:40:45	0
2582537	99	45	39,4	cyclictest	2848010	-21	kworker/u8:0+events_unbound	23:40:29	1
2582537	99	45	39,4	cyclictest	2558222	-21	kworker/u8:1+events_unbound	20:20:30	1
2582537	99	45	37,6	cyclictest	2558222	-21	kworker/u8:1+flush-8:0	19:15:42	1
2582534	99	45	41,3	cyclictest	2848010	-21	kworker/u8:0+events_unbound	00:08:12	0
2582534	99	45	40,4	cyclictest	1641715	-21	kworker/u8:0+events_unbound	20:18:40	0
2582537	99	44	34,8	cyclictest	2767661	-21	ntpq	22:10:37	1
2582534	99	44	40,3	cyclictest	2758950	-21	kworker/u8:3+events_unbound	23:17:39	0
2582534	99	44	40,3	cyclictest	2758950	-21	kworker/u8:3+events_unbound	22:05:48	0
2582534	99	44	40,3	cyclictest	2743491	-21	kworker/u8:0+events_unbound	21:48:38	0
2582534	99	44	40,3	cyclictest	2734609	-21	kworker/u8:1+events_unbound	23:25:13	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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