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 Tue Aug 11, 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
2522369	99	54	48,5	cyclictest	2628564	-21	kworker/u8:3+events_unbound	22:20:00	0
2522369	99	54	46,6	cyclictest	2558918	-21	latency_hist	19:45:01	0
2522373	99	52	47,3	cyclictest	1713309	-21	kworker/u8:1+events_unbound	20:55:01	1
2522373	99	50	45,3	cyclictest	2811900	-21	kworker/u8:0+events_unbound	00:17:47	1
2522369	99	50	46,3	cyclictest	2777507	-21	kworker/u8:0+events_unbound	23:33:02	0
2522373	99	48	44,3	cyclictest	2787179	-21	kworker/u8:2+events_unbound	23:55:00	1
2522369	99	48	44,3	cyclictest	2534362	-21	kworker/u8:0+events_unbound	19:37:19	0
2522373	99	47	43,3	cyclictest	2583824	-21	kworker/u8:0+events_unbound	20:45:01	1
2522369	99	47	43,3	cyclictest	2811900	-21	kworker/u8:0+events_unbound	00:15:20	0
2522369	99	47	41,4	cyclictest	2822287	-21	/usr/sbin/munin	00:13:06	0
2522369	99	46	43,2	cyclictest	2682815	-21	kworker/u8:1+events_unbound	22:03:02	0
2522369	99	46	42,3	cyclictest	2628564	-21	kworker/u8:3+events_unbound	22:20:04	0
2522369	99	45	41,3	cyclictest	2628564	-21	kworker/u8:3+events_unbound	21:35:19	0
2522369	99	45	41,3	cyclictest	2573982	-21	kworker/u8:2+events_unbound	21:02:19	0
2522369	99	45	40,4	cyclictest	2522244	-21	kworker/u8:2+events_unbound	19:28:19	0
2522373	99	44	40,3	cyclictest	2787179	-21	kworker/u8:2+events_unbound	00:02:45	1
2522369	99	44	40,3	cyclictest	2787179	-21	kworker/u8:2+events_unbound	23:57:46	0
2522369	99	44	40,3	cyclictest	2787179	-21	kworker/u8:2+events_unbound	23:57:46	0
2522369	99	44	40,3	cyclictest	2573982	-21	kworker/u8:2+events_unbound	21:22:50	0
2522369	99	44	39,4	cyclictest	2682815	-21	kworker/u8:1+events_unbound	22:40:08	0
2522373	99	43	38,4	cyclictest	2628564	-21	kworker/u8:3+events_unbound	23:17:51	1
2522373	99	43	38,3	cyclictest	2682815	-21	kworker/u8:1+events_unbound	22:58:04	1
2522369	99	43	39,3	cyclictest	2682815	-21	kworker/u8:1+events_unbound	21:57:17	0
2522369	99	43	39,3	cyclictest	2534362	-21	kworker/u8:0+events_unbound	19:48:06	0
2522369	99	43	38,4	cyclictest	1713309	-21	kworker/u8:1+events_unbound	20:52:17	0
2522373	99	42	37,4	cyclictest	2703033	-21	kworker/u8:2+flush-8:0	23:07:48	1
2522373	99	42	35,5	cyclictest	1713309	-21	kworker/u8:1+flush-8:0	19:23:04	1
2522373	99	42	35,5	cyclictest	1713309	-21	kworker/u8:1+flush-8:0	19:23:04	1
2522369	99	42	38,3	cyclictest	2836917	-21	kworker/u8:1+events_unbound	00:25:21	0
2522369	99	42	38,3	cyclictest	2682815	-21	kworker/u8:1+events_unbound	22:05:19	0
2522369	99	42	38,3	cyclictest	2663306	-21	kworker/u8:0+events_unbound	21:41:19	0
2522369	99	42	38,3	cyclictest	2583824	-21	kworker/u8:0+events_unbound	20:31:19	0
2522369	99	42	38,3	cyclictest	2573982	-21	kworker/u8:2+events_unbound	20:18:01	0
2522369	99	42	38,3	cyclictest	2544359	-21	kworker/u8:3+events_unbound	19:58:04	0
2522369	99	42	38,3	cyclictest	2544359	-21	kworker/u8:3+events_unbound	19:51:18	0
2522369	99	42	38,3	cyclictest	2475496	-21	kworker/u8:3+events_unbound	19:11:18	0
2522369	99	42	37,4	cyclictest	2534362	-21	kworker/u8:0+events_unbound	19:24:18	0
2522369	99	42	37,4	cyclictest	2534362	-21	kworker/u8:0+events_unbound	19:24:18	0
2522373	99	41	36,4	cyclictest	2787179	-21	kworker/u8:2+events_unbound	00:38:01	1
2522373	99	41	36,4	cyclictest	2573982	-21	kworker/u8:2+events_unbound	21:18:01	1
2522373	99	41	36,3	cyclictest	2836678	-21	latency_hist	00:25:01	1
2522369	99	41	37,3	cyclictest	2812140	-21	kworker/u8:4+events_unbound	00:07:53	0
2522369	99	41	37,3	cyclictest	2777507	-21	kworker/u8:0+events_unbound	23:41:24	0
2522369	99	41	37,3	cyclictest	2703033	-21	kworker/u8:2+events_unbound	22:14:17	0
2522369	99	41	37,3	cyclictest	2628564	-21	kworker/u8:3+events_unbound	22:55:21	0
2522369	99	41	37,3	cyclictest	2628564	-21	kworker/u8:3+events_unbound	20:57:18	0
2522369	99	41	37,3	cyclictest	2573982	-21	kworker/u8:2+events_unbound	20:07:18	0
2522369	99	41	37,3	cyclictest	1713309	-21	kworker/u8:1+events_unbound	21:09:54	0
2522369	99	41	33,3	cyclictest	1713309	-21	kworker/u8:1+events_unbound	20:37:59	0
2522373	99	40	36,3	cyclictest	2573982	-21	kworker/u8:2+events_unbound	21:30:00	1
2522369	99	40	37,2	cyclictest	2703033	-21	kworker/u8:2+events_unbound	23:00:09	0
2522369	99	40	36,3	cyclictest	2787179	-21	kworker/u8:2+events_unbound	00:21:47	0
2522369	99	40	36,3	cyclictest	2772118	-21	kworker/u8:1+events_unbound	23:27:23	0
2522369	99	40	36,3	cyclictest	2703033	-21	kworker/u8:2+events_unbound	23:06:23	0
2522369	99	40	32,4	cyclictest	2703033	-21	kworker/u8:2+events_unbound	22:25:19	0
2522373	99	39	35,3	cyclictest	2682815	-21	kworker/u8:1+events_unbound	22:32:47	1
2522369	99	39	35,3	cyclictest	2682815	-21	kworker/u8:1+events_unbound	21:53:04	0
2522369	99	39	35,3	cyclictest	1713309	-21	kworker/u8:1+events_unbound	20:49:52	0
2522369	99	39	34,4	cyclictest	2703033	-21	kworker/u8:2+events_unbound	22:38:17	0
2522373	99	38	34,3	cyclictest	2573982	-21	kworker/u8:2+events_unbound	21:47:48	1
2522373	99	38	34,3	cyclictest	2534362	-21	kworker/u8:0+events_unbound	19:37:49	1
2522373	99	38	34,3	cyclictest	1713309	-21	kworker/u8:1+events_unbound	20:27:48	1
2522373	99	38	33,4	cyclictest	2787179	-21	kworker/u8:2+flush-8:0	00:12:53	1
2522373	99	38	33,4	cyclictest	2573982	-21	kworker/u8:2+events_unbound	20:23:00	1
2522373	99	38	32,4	cyclictest	2573982	-21	kworker/u8:2+events_unbound	20:03:00	1
2522369	99	38	34,3	cyclictest	2836917	-21	kworker/u8:1+events_unbound	00:38:06	0
2522369	99	38	34,3	cyclictest	2812140	-21	kworker/u8:4+events_unbound	00:04:38	0
2522369	99	38	34,3	cyclictest	2787179	-21	kworker/u8:2+events_unbound	23:46:23	0
2522369	99	38	34,3	cyclictest	2787179	-21	kworker/u8:2+events_unbound	23:36:23	0
2522369	99	38	34,3	cyclictest	2628564	-21	kworker/u8:3+events_unbound	23:51:23	0
2522369	99	38	34,3	cyclictest	2583824	-21	kworker/u8:0+events_unbound	20:24:18	0
2522369	99	38	34,3	cyclictest	1713309	-21	kworker/u8:1+events_unbound	21:29:56	0
2522373	99	37	33,3	cyclictest	2628564	-21	kworker/u8:3+events_unbound	22:12:47	1
2522373	99	37	33,2	cyclictest	2682815	-21	kworker/u8:1+events_unbound	21:52:49	1
2522373	99	37	32,3	cyclictest	2703033	-21	kworker/u8:2+flush-8:0	22:47:59	1
2522369	99	37	33,3	cyclictest	2663306	-21	kworker/u8:0+events_unbound	21:32:19	0
2522369	99	37	33,3	cyclictest	2663306	-21	kworker/u8:0+events_unbound	21:32:18	0
2522369	99	37	33,3	cyclictest	2628564	-21	kworker/u8:3+events_unbound	23:17:22	0
2522369	99	37	33,3	cyclictest	2534362	-21	kworker/u8:0+events_unbound	19:32:18	0
2522369	99	37	33,3	cyclictest	1713309	-21	kworker/u8:1+events_unbound	20:28:18	0
2522373	99	36	32,3	cyclictest	2762604	-21	kworker/u8:0+events_unbound	23:15:01	1
2522373	99	36	31,4	cyclictest	2682815	-21	kworker/u8:1+events_unbound	22:07:48	1
2522373	99	36	29,5	cyclictest	2732742	-21	latency_hist	22:40:01	1
2522369	99	36	32,3	cyclictest	2812140	-21	kworker/u8:4+events_unbound	00:35:00	0
2522369	99	36	32,3	cyclictest	2573982	-21	kworker/u8:2+events_unbound	21:48:07	0
2522369	99	36	32,3	cyclictest	1713309	-21	kworker/u8:1+events_unbound	20:43:06	0
2522369	99	36	26,8	cyclictest	2648870	-21	diskstats	21:17:49	0
2522373	99	35	31,3	cyclictest	2663306	-21	kworker/u8:0+events_unbound	21:32:45	1
2522373	99	35	31,3	cyclictest	2663306	-21	kworker/u8:0+events_unbound	21:32:45	1
2522369	99	35	28,3	cyclictest	2703033	-21	kworker/u8:2+events_unbound	22:52:49	0
2522369	99	35	28,3	cyclictest	2703033	-21	kworker/u8:2+events_unbound	22:52:49	0
2522373	99	34	30,3	cyclictest	2703033	-21	kworker/u8:2+events_unbound	22:42:47	1
2522373	99	34	27,5	cyclictest	2703033	-21	kworker/u8:2+flush-8:0	22:28:04	1
2522369	99	34	30,3	cyclictest	2703033	-21	kworker/u8:2+events_unbound	22:46:17	0
2522369	99	34	30,3	cyclictest	1713309	-21	kworker/u8:1+events_unbound	19:18:34	0
2522373	99	33	29,3	cyclictest	2663306	-21	kworker/u8:0+flush-8:0	21:42:49	1
2522373	99	33	29,3	cyclictest	2573982	-21	kworker/u8:2+events_unbound	21:10:00	1
2522373	99	33	28,4	cyclictest	2522244	-21	kworker/u8:2+flush-8:0	19:28:03	1
2522373	99	33	28,3	cyclictest	2812140	-21	kworker/u8:4+events_unbound	00:07:49	1
2522373	99	33	27,5	cyclictest	2703033	-21	kworker/u8:2+events_unbound	23:23:02	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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