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 Fri Jul 03, 2026 00:44:16)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2722233	2	61	0,5	sleep3	0	-21	swapper/3	23:45:21	3
2443007	99	60	54,4	cyclictest	2538738	-21	kworker/u8:3+events_unbound	20:45:27	0
2443007	99	58	53,4	cyclictest	2538738	-21	kworker/u8:3+flush-8:0	21:05:29	0
2443007	99	58	51,6	cyclictest	2442878	-21	kworker/u8:2+flush-8:0	19:40:26	0
2610312	2	56	0,4	chrt	0	-21	swapper/0	21:55:17	0
2443007	99	54	46,5	cyclictest	2708255	-21	kworker/u8:0+flush-8:0	00:30:15	0
2443007	99	54	43,9	cyclictest	2732247	-21	ntpq	23:55:22	0
2443011	99	53	47,5	cyclictest	2708255	-21	kworker/u8:0+flush-8:0	23:50:32	1
2443011	99	53	38,10	cyclictest	1704890	-21	systemd-journal	23:30:47	1
2443007	99	52	45,5	cyclictest	2688716	-21	kworker/u8:3+flush-8:0	23:30:30	0
2443007	99	51	43,6	cyclictest	1604667	-21	kworker/u8:0+flush-8:0	19:15:06	0
2443011	99	50	39,9	cyclictest	2573291	-21	ntpq	21:15:23	1
2443007	99	50	39,8	cyclictest	2503433	-21	ntpq	20:05:23	0
2663085	2	49	0,3	chrt	0	-21	swapper/1	22:45:26	1
2443007	99	49	43,4	cyclictest	2654119	-21	kworker/u8:0+events_unbound	22:45:25	0
2443007	99	49	43,4	cyclictest	2442878	-21	kworker/u8:2+flush-8:0	19:45:28	0
2443007	99	49	37,9	cyclictest	1704890	-21	systemd-journal	19:32:28	0
2443011	99	48	43,4	cyclictest	2473842	-21	ntpq	19:35:25	1
2443011	99	48	37,8	cyclictest	1704890	-21	systemd-journal	00:11:48	1
2443007	99	48	40,5	cyclictest	2688716	-21	kworker/u8:3+flush-8:0	00:20:26	0
2443011	99	47	41,4	cyclictest	2442878	-21	kworker/u8:2+flush-8:0	19:15:31	1
2443011	99	47	40,5	cyclictest	2447768	-21	apt-get	19:13:37	1
2443007	99	47	41,4	cyclictest	2643768	-21	kworker/u8:1+flush-8:0	23:15:22	0
2443007	99	47	41,4	cyclictest	2643768	-21	kworker/u8:1+flush-8:0	23:15:22	0
2443007	99	46	42,3	cyclictest	2504405	-21	kworker/u8:1+events_unbound	21:10:30	0
2443007	99	46	40,4	cyclictest	2688716	-21	kworker/u8:3+events_unbound	00:00:24	0
2443007	99	46	39,5	cyclictest	2688716	-21	kworker/u8:3+flush-8:0	23:25:24	0
2443007	99	46	39,4	cyclictest	1604667	-21	kworker/u8:0+events_unbound	20:00:24	0
2443007	99	46	39,3	cyclictest	1604667	-21	kworker/u8:0+flush-8:0	21:40:21	0
2443007	99	46	38,5	cyclictest	2442878	-21	kworker/u8:2+events_unbound	19:20:12	0
2443007	99	46	34,9	cyclictest	2697495	-21	ntpq	23:20:24	0
2443007	99	46	34,9	cyclictest	2697495	-21	ntpq	23:20:24	0
2443007	99	46	34,9	cyclictest	2493497	-21	ntpq	19:55:23	0
2443015	99	45	28,3	cyclictest	1704890	-21	systemd-journal	21:10:00	2
2443011	99	45	35,8	cyclictest	2468811	-21	ntpq	19:30:22	1
2443007	99	45	41,3	cyclictest	2654119	-21	kworker/u8:0+flush-8:0	23:00:28	0
2443007	99	45	41,3	cyclictest	2538738	-21	kworker/u8:3+flush-8:0	22:05:30	0
2443007	99	45	39,4	cyclictest	2529409	-21	kworker/u8:2+events_unbound	20:35:19	0
2443007	99	45	38,5	cyclictest	2504405	-21	kworker/u8:1+flush-8:0	20:15:23	0
2443007	99	45	37,6	cyclictest	2538738	-21	kworker/u8:3+flush-8:0	22:25:24	0
2443011	99	44	36,6	cyclictest	2667798	-21	ntpq	22:50:23	1
2443007	99	44	39,3	cyclictest	2654119	-21	kworker/u8:0+flush-8:0	22:50:16	0
2443007	99	44	36,5	cyclictest	2708255	-21	kworker/u8:0+flush-8:0	00:25:25	0
2443011	99	43	36,5	cyclictest	2599170	-21	/usr/sbin/munin	21:45:22	1
2443011	99	43	34,6	cyclictest	2489544	-21	latency_hist	19:55:01	1
2443007	99	43	37,4	cyclictest	2733227	-21	kworker/u8:2+events_unbound	00:15:25	0
2443007	99	43	37,4	cyclictest	1604667	-21	kworker/u8:0+flush-8:0	22:00:26	0
2443007	99	43	37,4	cyclictest	1096663	-21	kworker/u8:4+events_unbound	19:35:22	0
2443007	99	43	35,5	cyclictest	1604667	-21	kworker/u8:0+events_unbound	21:00:24	0
2443011	99	42	36,5	cyclictest	2504405	-21	kworker/u8:1+flush-8:0	21:25:25	1
2443007	99	42	37,3	cyclictest	2618947	-21	kworker/u8:2+flush-8:0	22:35:30	0
2443007	99	42	37,3	cyclictest	2529409	-21	kworker/u8:2+events_unbound	20:40:29	0
2443007	99	42	35,5	cyclictest	2688716	-21	kworker/u8:3+flush-8:0	23:40:24	0
2443011	99	41	35,4	cyclictest	2708255	-21	kworker/u8:0+flush-8:0	00:30:19	1
2443007	99	41	35,3	cyclictest	2733227	-21	kworker/u8:2+events_unbound	00:05:18	0
2443011	99	40	29,8	cyclictest	1704890	-21	systemd-journal	20:10:42	1
2443007	99	40	36,3	cyclictest	2504405	-21	kworker/u8:1+flush-8:0	20:10:24	0
2443007	99	40	34,4	cyclictest	2688716	-21	kworker/u8:3+events_unbound	23:50:15	0
2443007	99	40	34,4	cyclictest	2504405	-21	kworker/u8:1+flush-8:0	21:30:31	0
2443007	99	40	33,5	cyclictest	2504405	-21	kworker/u8:1+flush-8:0	21:25:25	0
2443007	99	40	33,4	cyclictest	2442878	-21	kworker/u8:2+events_unbound	19:50:27	0
2443007	99	40	30,7	cyclictest	2504405	-21	kworker/u8:1+flush-8:0	21:20:25	0
2443011	99	39	33,4	cyclictest	1604667	-21	kworker/u8:0+flush-8:0	19:25:13	1
2443007	99	39	34,3	cyclictest	1604667	-21	kworker/u8:0+events_unbound	20:50:25	0
2443007	99	39	32,5	cyclictest	2768168	-21	kworker/u8:1+flush-8:0	00:35:25	0
2443007	99	38	32,4	cyclictest	2733227	-21	kworker/u8:2+events_unbound	00:10:20	0
2443007	99	38	32,4	cyclictest	2643768	-21	kworker/u8:1+events_unbound	23:10:22	0
2443007	99	38	32,4	cyclictest	2514933	-21	kworker/u8:3+events_unbound	20:35:01	0
2443007	99	38	32,4	cyclictest	2514933	-21	kworker/u8:3+events_unbound	20:35:00	0
2443007	99	38	32,3	cyclictest	2618947	-21	kworker/u8:2+flush-8:0	22:15:17	0
2443011	99	37	31,4	cyclictest	1604667	-21	kworker/u8:0+flush-8:0	20:50:13	1
2443007	99	36	32,3	cyclictest	1604667	-21	kworker/u8:0+flush-8:0	21:15:22	0
2443007	99	36	31,3	cyclictest	2538738	-21	kworker/u8:3+flush-8:0	22:30:25	0
2443011	99	35	26,7	cyclictest	1704890	-21	systemd-journal	00:28:48	1
2443011	99	35	25,7	cyclictest	1704890	-21	systemd-journal	22:21:43	1
2443007	99	35	30,4	cyclictest	2442878	-21	kworker/u8:2+flush-8:0	19:25:25	0
2443007	99	35	30,3	cyclictest	2654119	-21	kworker/u8:0+events_unbound	23:05:24	0
2443011	99	34	28,5	cyclictest	2538738	-21	kworker/u8:3+flush-8:0	22:25:31	1
2443007	99	34	30,3	cyclictest	2654119	-21	kworker/u8:0+events_unbound	22:40:31	0
2443007	99	34	28,3	cyclictest	2688716	-21	kworker/u8:3+flush-8:0	23:45:21	0
2442505	2	34	4,10	sleep1	0	-21	swapper/1	19:06:08	1
2443011	99	33	26,5	cyclictest	2698043	-21	grep	23:20:32	1
2443011	99	33	26,5	cyclictest	2698043	-21	grep	23:20:32	1
2443007	99	33	27,4	cyclictest	2538738	-21	kworker/u8:3+events_unbound	22:10:12	0
2443007	99	33	26,4	cyclictest	2504405	-21	kworker/u8:1+flush-8:0	20:25:16	0
2443007	99	33	25,7	cyclictest	2504405	-21	kworker/u8:1+flush-8:0	21:45:30	0
2443011	99	32	26,4	cyclictest	2534440	-21	apt-get	20:40:09	1
2443011	99	32	22,7	cyclictest	2604338	-21	/usr/sbin/munin	21:50:22	1
2443015	99	31	27,3	cyclictest	2544674	-21	aten2_r5power_p	20:50:11	2
2443015	99	31	26,3	cyclictest	2712913	-21	unixbench_multi	23:35:30	2
2443011	99	31	26,4	cyclictest	2504405	-21	kworker/u8:1+flush-8:0	21:30:27	1
2443011	99	31	25,5	cyclictest	2654119	-21	kworker/u8:0+flush-8:0	23:05:30	1
2443011	99	31	25,4	cyclictest	1096663	-21	kworker/u8:4+flush-8:0	20:05:27	1
2443011	99	31	21,8	cyclictest	2539375	-21	apt-get	20:45:09	1
2443007	99	31	27,3	cyclictest	2618947	-21	kworker/u8:2+flush-8:0	22:55:21	0
2443007	99	31	26,3	cyclictest	2593988	-21	idleruntime-cro	21:40:00	0
2443007	99	31	26,3	cyclictest	2538738	-21	kworker/u8:3+flush-8:0	22:20:25	0
2443007	99	31	25,4	cyclictest	2443368	-21	cpuspeed_turbos	19:10:12	0
2443015	99	30	26,2	cyclictest	2738538	-21	aten2_r5power_p	00:05:11	2
2443015	99	30	24,4	cyclictest	2767491	-21	unixbench_multi	00:30:34	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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