OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #6

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 rack0slot6s.osadl.org (updated Fri Aug 14, 2026 00:46:25)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2621524	2	148	133,9	sleep18	0	-21	swapper/18	19:08:27	10
2622099	99	60	6,33	cyclictest	0	-21	swapper/17	21:34:23	9
2621505	2	52	47,3	sleep3	0	-21	swapper/3	19:08:12	13
2902714	2	51	0,0	sleep7	0	-21	swapper/7	00:30:03	17
2622087	99	49	21,6	cyclictest	2617188	-21	kworker/u80:4+i915	20:20:59	5
2621510	2	46	41,3	sleep6	0	-21	swapper/6	19:08:15	16
2621565	2	45	40,3	sleep5	0	-21	swapper/5	19:08:55	15
2621500	2	45	33,7	sleep19	0	-21	swapper/19	19:08:08	11
2621551	2	43	37,3	sleep13	0	-21	swapper/13	19:08:43	5
2827373	2	42	0,0	sleep11	0	-21	swapper/11	23:01:00	3
2622042	99	42	42,0	cyclictest	0	-21	swapper/0	21:00:59	0
1796	98	42	0,34	rtkit-daemon	0	-21	swapper/16	19:08:56	8
2621569	2	41	36,3	sleep9	0	-21	swapper/9	19:08:59	19
2621546	2	41	37,2	sleep8	0	-21	swapper/8	19:08:37	18
2622065	99	40	11,29	cyclictest	0	-21	swapper/7	20:06:59	17
2621541	2	40	36,2	sleep4	0	-21	swapper/4	19:08:33	14
2622042	99	39	7,32	cyclictest	0	-21	swapper/0	20:06:59	0
2621503	2	39	34,3	sleep1	0	-21	swapper/1	19:08:09	1
2621428	2	39	34,3	sleep2	0	-21	swapper/2	19:07:11	12
2621626	2	38	33,3	sleep7	0	-21	swapper/7	19:09:37	17
2621493	2	38	33,3	sleep12	0	-21	swapper/12	19:08:01	4
2622097	99	37	9,27	cyclictest	0	-21	swapper/16	22:37:59	8
2622097	99	37	9,27	cyclictest	0	-21	swapper/16	22:37:59	8
2622082	99	37	11,25	cyclictest	132	1	irq_work/12	23:34:59	4
2621366	2	37	32,3	sleep14	0	-21	swapper/14	19:06:23	6
2620354	2	37	29,5	sleep10	0	-21	swapper/10	19:05:19	2
2621422	2	36	33,2	sleep17	0	-21	swapper/17	19:07:06	9
2622107	99	35	0,35	cyclictest	0	-21	swapper/19	21:18:59	11
2622082	99	35	7,27	cyclictest	132	1	irq_work/12	23:15:59	4
2622072	99	35	35,0	cyclictest	0	-21	swapper/9	22:57:59	19
2622069	99	35	0,34	cyclictest	0	-21	swapper/8	23:52:58	18
2622065	99	35	0,34	cyclictest	0	-21	swapper/7	22:38:59	17
2622065	99	35	0,34	cyclictest	0	-21	swapper/7	22:38:59	17
2621474	2	35	33,1	sleep15	0	-21	swapper/15	19:07:44	7
2621415	2	35	31,2	sleep11	0	-21	swapper/11	19:07:00	3
2622102	99	34	33,1	cyclictest	0	-21	swapper/18	23:40:44	10
2622102	99	34	0,33	cyclictest	0	-21	swapper/18	20:08:59	10
2622099	99	34	33,1	cyclictest	0	-21	swapper/17	23:40:44	9
2622099	99	34	0,33	cyclictest	0	-21	swapper/17	22:49:59	9
2622099	99	34	0,33	cyclictest	0	-21	swapper/17	22:49:59	9
2622097	99	34	0,33	cyclictest	0	-21	swapper/16	22:13:59	8
2622092	99	34	0,33	cyclictest	2697025	-40	tracker-miner-f	20:34:58	7
2622092	99	34	0,33	cyclictest	0	-21	swapper/15	22:19:59	7
2622092	99	34	0,33	cyclictest	0	-21	swapper/15	19:37:59	7
2622092	99	34	0,33	cyclictest	0	-21	swapper/15	19:21:59	7
2622092	99	34	0,33	cyclictest	0	-21	swapper/15	19:21:58	7
2622072	99	34	0,1	cyclictest	2714468	-21	turbostat	20:54:59	19
2622069	99	34	33,0	cyclictest	0	-21	swapper/8	21:44:59	18
2622069	99	34	33,0	cyclictest	0	-21	swapper/8	20:21:12	18
2622069	99	34	0,33	cyclictest	0	-21	swapper/8	20:55:06	18
2622069	99	34	0,33	cyclictest	0	-21	swapper/8	20:17:27	18
2622065	99	34	0,0	cyclictest	0	-21	swapper/7	21:34:59	17
2622062	99	34	0,33	cyclictest	0	-21	swapper/6	00:11:59	16
2622045	99	34	0,33	cyclictest	0	-21	swapper/1	22:49:30	1
2622045	99	34	0,33	cyclictest	0	-21	swapper/1	22:49:30	1
2622042	99	34	30,4	cyclictest	2612674	-21	kworker/0:1+kacpi_notify	19:53:16	0
2621648	2	34	28,4	sleep0	0	-21	swapper/0	19:09:50	0
2622107	99	33	33,0	cyclictest	0	-21	swapper/19	23:57:59	11
2622107	99	33	32,1	cyclictest	2884044	-40	tracker-miner-f	00:05:59	11
2622102	99	33	33,0	cyclictest	0	-21	swapper/18	21:37:59	10
2622102	99	33	33,0	cyclictest	0	-21	swapper/18	19:29:59	10
2622102	99	33	33,0	cyclictest	0	-21	swapper/18	19:29:59	10
2622102	99	33	32,1	cyclictest	0	-21	swapper/18	22:19:59	10
2622102	99	33	32,0	cyclictest	0	-21	swapper/18	20:34:59	10
2622099	99	33	33,0	cyclictest	0	-21	swapper/17	21:37:59	9
2622099	99	33	33,0	cyclictest	0	-21	swapper/17	19:29:59	9
2622099	99	33	33,0	cyclictest	0	-21	swapper/17	19:29:59	9
2622099	99	33	32,1	cyclictest	2884449	-21	crond	00:09:59	9
2622099	99	33	32,0	cyclictest	0	-21	swapper/17	20:34:59	9
2622097	99	33	33,0	cyclictest	0	-21	swapper/16	21:51:59	8
2622097	99	33	0,0	cyclictest	0	-21	swapper/16	22:20:59	8
2622092	99	33	0,0	cyclictest	0	-21	swapper/15	23:40:44	7
2622092	99	33	0,0	cyclictest	0	-21	swapper/15	21:37:59	7
2622079	99	33	32,1	cyclictest	1870	50	irq/149-eno1	22:34:58	3
2622079	99	33	32,1	cyclictest	1870	50	irq/149-eno1	22:29:07	3
2622077	99	33	0,32	cyclictest	2709711	-40	tracker-miner-f	20:45:41	2
2622069	99	33	33,0	cyclictest	0	-21	swapper/8	19:38:59	18
2622069	99	33	32,1	cyclictest	0	-21	swapper/8	19:26:59	18
2622069	99	33	32,1	cyclictest	0	-21	swapper/8	19:26:59	18
2622069	99	33	32,1	cyclictest	0	-21	swapper/8	00:33:59	18
2622069	99	33	0,0	cyclictest	0	-21	swapper/8	21:30:58	18
2622069	99	33	0,0	cyclictest	0	-21	swapper/8	21:21:59	18
2622069	99	33	0,0	cyclictest	0	-21	swapper/8	00:38:59	18
2622062	99	33	0,33	cyclictest	0	-21	swapper/6	21:00:59	16
2622058	99	33	33,0	cyclictest	0	-21	swapper/5	00:05:59	15
2622054	99	33	0,33	cyclictest	0	-21	swapper/4	00:03:59	14
2622052	99	33	33,0	cyclictest	0	-21	swapper/3	21:28:58	13
2622048	99	33	0,32	cyclictest	0	-21	swapper/2	21:43:59	12
2622048	99	33	0,32	cyclictest	0	-21	swapper/2	21:06:59	12
2622048	99	33	0,0	cyclictest	0	-21	swapper/2	00:08:58	12
2622045	99	33	0,32	cyclictest	0	-21	swapper/1	21:25:13	1
2622045	99	33	0,32	cyclictest	0	-21	swapper/1	20:35:09	1
2622042	99	33	6,26	cyclictest	0	-21	swapper/0	23:13:59	0
2622107	99	32	32,0	cyclictest	0	-21	swapper/19	00:32:59	11
2622107	99	32	0,31	cyclictest	0	-21	swapper/19	23:21:33	11
2622102	99	32	32,0	cyclictest	0	-21	swapper/18	23:21:59	10
2622102	99	32	32,0	cyclictest	0	-21	swapper/18	20:17:59	10
2622102	99	32	32,0	cyclictest	0	-21	swapper/18	19:37:59	10
2622102	99	32	32,0	cyclictest	0	-21	swapper/18	19:21:59	10
2622102	99	32	32,0	cyclictest	0	-21	swapper/18	19:21:59	10
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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