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 Wed Jun 24, 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
419609	2	379	0,2	sleep3	0	-21	swapper/3	23:35:22	3
152841	99	72	67,4	cyclictest	457841	-21	kworker/u8:2+flush-8:0	00:35:37	1
152841	99	72	64,6	cyclictest	239399	-21	kworker/u8:3+flush-8:0	21:35:39	1
152837	99	72	68,3	cyclictest	2983773	-21	kworker/u8:0+flush-8:0	20:35:38	0
152837	99	72	62,8	cyclictest	214936	-21	/usr/sbin/munin	20:10:35	0
152837	99	71	67,3	cyclictest	427572	-21	kworker/u8:0+flush-8:0	23:50:38	0
152837	99	71	65,4	cyclictest	213805	-21	kworker/u8:1+events_unbound	20:55:36	0
152841	99	70	64,5	cyclictest	213805	-21	kworker/u8:1+flush-8:0	21:00:36	1
152841	99	70	57,5	cyclictest	281867	-21	kworker/u8:0+flush-8:0	23:25:37	1
152837	99	70	62,6	cyclictest	264693	-21	/usr/sbin/munin	21:00:38	0
152841	99	69	63,5	cyclictest	164382	-21	kworker/u8:3+events_unbound	19:50:36	1
152841	99	69	63,4	cyclictest	281867	-21	kworker/u8:0+events_unbound	22:10:35	1
152837	99	69	63,5	cyclictest	323470	-21	kworker/u8:1+events_unbound	22:00:23	0
152841	99	68	64,3	cyclictest	373208	-21	kworker/u8:1+events_unbound	23:35:18	1
152841	99	68	58,5	cyclictest	356308	-21	kworker/u8:3+events_unbound	22:30:37	1
152841	99	68	57,6	cyclictest	457841	-21	kworker/u8:2+events_unbound	00:30:30	1
152837	99	68	62,4	cyclictest	356308	-21	kworker/u8:3+events_unbound	23:05:29	0
152837	99	68	62,4	cyclictest	274550	-21	kworker/u8:2+events_unbound	21:10:34	0
152841	99	67	61,5	cyclictest	239399	-21	kworker/u8:3+flush-8:0	20:50:20	1
152841	99	67	60,5	cyclictest	213805	-21	kworker/u8:1+flush-8:0	20:15:32	1
152837	99	67	63,3	cyclictest	356308	-21	kworker/u8:3+flush-8:0	23:00:38	0
152837	99	67	63,3	cyclictest	356308	-21	kworker/u8:3+events_unbound	22:45:36	0
152837	99	67	59,5	cyclictest	204833	-21	latency_hist	20:00:01	0
152841	99	66	61,3	cyclictest	427572	-21	kworker/u8:0+events_unbound	23:55:34	1
152845	99	65	58,5	cyclictest	373208	-21	kworker/u8:1+flush-8:0	22:55:38	2
152837	99	65	61,3	cyclictest	184906	-21	kworker/u8:2+flush-8:0	20:05:45	0
152837	99	65	61,3	cyclictest	184906	-21	kworker/u8:2+events_unbound	20:30:39	0
152841	99	64	58,5	cyclictest	323470	-21	kworker/u8:1+flush-8:0	22:00:35	1
152841	99	64	54,5	cyclictest	213805	-21	kworker/u8:1+events_unbound	21:30:36	1
152837	99	64	59,4	cyclictest	418743	-21	kworker/u8:3+events_unbound	00:05:21	0
152837	99	64	59,4	cyclictest	356308	-21	kworker/u8:3+events_unbound	22:30:39	0
152837	99	64	59,4	cyclictest	213805	-21	kworker/u8:1+flush-8:0	20:25:21	0
152837	99	63	59,3	cyclictest	394182	-21	kworker/u8:2+events_unbound	23:35:34	0
152837	99	63	58,4	cyclictest	213805	-21	kworker/u8:1+events_unbound	20:20:18	0
152837	99	63	58,4	cyclictest	184906	-21	kworker/u8:2+events_unbound	20:00:32	0
152837	99	63	58,3	cyclictest	338303	-21	kworker/u8:2+events_unbound	22:15:19	0
152837	99	63	56,5	cyclictest	418743	-21	kworker/u8:3+events_unbound	00:25:36	0
152841	99	62	56,4	cyclictest	323470	-21	kworker/u8:1+events_unbound	22:20:20	1
152837	99	62	58,3	cyclictest	239399	-21	kworker/u8:3+events_unbound	21:20:36	0
152841	99	61	55,5	cyclictest	281867	-21	kworker/u8:0+flush-8:0	21:25:36	1
152841	99	61	54,5	cyclictest	281867	-21	kworker/u8:0+flush-8:0	21:45:32	1
152841	99	61	54,5	cyclictest	281867	-21	kworker/u8:0+flush-8:0	21:45:31	1
152837	99	61	57,3	cyclictest	239399	-21	kworker/u8:3+events_unbound	21:15:39	0
152837	99	61	56,3	cyclictest	427572	-21	kworker/u8:0+events_unbound	00:15:28	0
152837	99	61	51,3	cyclictest	281867	-21	kworker/u8:0+events_unbound	23:30:25	0
152841	99	60	56,3	cyclictest	179397	-21	kworker/u8:1+flush-8:0	19:35:21	1
152841	99	60	55,4	cyclictest	418743	-21	kworker/u8:3+flush-8:0	23:40:31	1
152841	99	60	50,4	cyclictest	51136	-21	kworker/u8:2+events_unbound	19:10:33	1
152837	99	60	56,3	cyclictest	239399	-21	kworker/u8:3+events_unbound	21:05:19	0
152837	99	60	55,3	cyclictest	281867	-21	kworker/u8:0+events_unbound	23:25:38	0
152841	99	59	52,5	cyclictest	281867	-21	kworker/u8:0+events_unbound	22:05:34	1
152837	99	59	56,2	cyclictest	418743	-21	kworker/u8:3+events_unbound	00:35:36	0
152837	99	59	55,3	cyclictest	443350	-21	kworker/u8:1+events_unbound	00:00:23	0
152837	99	59	55,3	cyclictest	427572	-21	kworker/u8:0+flush-8:0	00:20:22	0
152837	99	59	55,3	cyclictest	323470	-21	kworker/u8:1+events_unbound	22:20:34	0
152837	99	59	54,4	cyclictest	427572	-21	kworker/u8:0+flush-8:0	23:55:23	0
152837	99	59	52,3	cyclictest	281867	-21	kworker/u8:0+events_unbound	21:45:36	0
152837	99	59	52,3	cyclictest	281867	-21	kworker/u8:0+events_unbound	21:45:35	0
152841	99	58	52,4	cyclictest	338303	-21	kworker/u8:2+flush-8:0	22:25:23	1
152837	99	58	54,3	cyclictest	2983773	-21	kworker/u8:0+flush-8:0	20:45:23	0
152837	99	58	54,3	cyclictest	213805	-21	kworker/u8:1+events_unbound	20:50:35	0
152837	99	58	54,3	cyclictest	184906	-21	kworker/u8:2+events_unbound	20:15:20	0
152837	99	58	53,4	cyclictest	2983773	-21	kworker/u8:0+events_unbound	19:40:30	0
152841	99	57	53,3	cyclictest	2983773	-21	kworker/u8:0+events_unbound	20:10:33	1
152841	99	57	52,4	cyclictest	338303	-21	kworker/u8:2+flush-8:0	22:40:21	1
152841	99	57	51,4	cyclictest	213805	-21	kworker/u8:1+flush-8:0	20:55:32	1
152841	99	57	51,4	cyclictest	213805	-21	kworker/u8:1+events_unbound	21:15:22	1
152841	99	57	50,6	cyclictest	213805	-21	kworker/u8:1+flush-8:0	21:20:33	1
152841	99	57	49,6	cyclictest	178527	-21	ntpq	19:30:30	1
152837	99	57	53,3	cyclictest	281867	-21	kworker/u8:0+events_unbound	21:40:41	0
152837	99	57	53,3	cyclictest	281867	-21	kworker/u8:0+events_unbound	21:40:40	0
152837	99	57	51,4	cyclictest	2983773	-21	kworker/u8:0+events_unbound	19:15:05	0
152837	99	57	50,5	cyclictest	164382	-21	kworker/u8:3+events_unbound	19:45:33	0
152845	99	56	51,3	cyclictest	373208	-21	kworker/u8:1+events_unbound	23:15:34	2
152845	99	56	51,3	cyclictest	281867	-21	kworker/u8:0+flush-8:0	22:45:22	2
152841	99	56	49,6	cyclictest	394182	-21	kworker/u8:2+flush-8:0	23:50:33	1
152841	99	56	49,4	cyclictest	356308	-21	kworker/u8:3+flush-8:0	23:05:37	1
152837	99	56	52,3	cyclictest	51136	-21	kworker/u8:2+flush-8:0	19:30:21	0
152837	99	56	51,4	cyclictest	427572	-21	kworker/u8:0+events_unbound	23:45:33	0
152837	99	56	51,4	cyclictest	338303	-21	kworker/u8:2+events_unbound	22:35:36	0
152837	99	56	51,4	cyclictest	213805	-21	kworker/u8:1+events_unbound	21:30:41	0
152841	99	55	48,6	cyclictest	356308	-21	kworker/u8:3+flush-8:0	23:00:21	1
152841	99	55	48,5	cyclictest	184906	-21	kworker/u8:2+events_unbound	20:30:35	1
152841	99	55	46,6	cyclictest	1704890	-21	systemd-journal	00:10:26	1
152845	99	54	50,3	cyclictest	427572	-21	kworker/u8:0+flush-8:0	00:05:32	2
152845	99	54	48,4	cyclictest	281867	-21	kworker/u8:0+flush-8:0	23:20:22	2
152845	99	54	48,4	cyclictest	281867	-21	kworker/u8:0+flush-8:0	21:30:23	2
152841	99	54	49,4	cyclictest	281867	-21	kworker/u8:0+flush-8:0	23:30:20	1
152837	99	54	50,3	cyclictest	164382	-21	kworker/u8:3+flush-8:0	19:35:37	0
152845	99	53	44,6	cyclictest	1704890	-21	systemd-journal	20:10:00	2
152841	99	53	48,3	cyclictest	2983773	-21	kworker/u8:0+flush-8:0	20:35:32	1
152841	99	53	46,5	cyclictest	427572	-21	kworker/u8:0+flush-8:0	00:05:38	1
152841	99	53	43,7	cyclictest	408412	-21	apt-get	23:25:01	1
152837	99	53	47,4	cyclictest	239399	-21	kworker/u8:3+events_unbound	21:35:32	0
152845	99	52	46,4	cyclictest	281867	-21	kworker/u8:0+flush-8:0	23:30:31	2
152841	99	52	48,3	cyclictest	164382	-21	kworker/u8:3+events_unbound	19:45:20	1
152841	99	52	46,4	cyclictest	338303	-21	kworker/u8:2+flush-8:0	22:35:34	1
152841	99	52	46,4	cyclictest	164382	-21	kworker/u8:3+events_unbound	19:25:21	1
152837	99	52	48,3	cyclictest	51136	-21	kworker/u8:2+events_unbound	19:10:19	0
152845	99	51	47,3	cyclictest	239399	-21	kworker/u8:3+flush-8:0	20:40:31	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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