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 Mon Aug 24, 2026 00:46:26)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2237225	99	77	8,33	cyclictest	0	-21	swapper/2	22:04:23	12
2237245	99	53	23,29	cyclictest	0	-21	swapper/8	19:51:59	18
2236604	2	53	49,2	sleep17	0	-21	swapper/17	19:07:07	9
2236833	2	52	45,4	sleep19	0	-21	swapper/19	19:09:49	11
2237280	99	50	21,28	cyclictest	0	-21	swapper/19	20:29:59	11
2237277	99	49	19,29	cyclictest	0	-21	swapper/18	19:53:49	10
2237218	99	47	17,7	cyclictest	0	-21	swapper/0	20:29:59	0
2234926	2	46	34,7	sleep8	0	-21	swapper/8	19:05:18	18
2237280	99	45	12,32	cyclictest	0	-21	swapper/19	19:53:49	11
2236632	2	45	39,3	sleep2	0	-21	swapper/2	19:07:32	12
2236750	2	43	37,3	sleep4	0	-21	swapper/4	19:08:54	14
2236749	2	43	37,4	sleep3	0	-21	swapper/3	19:08:52	13
2235899	2	43	31,7	sleep15	0	-21	swapper/15	19:05:25	7
2234316	2	43	37,3	sleep5	0	-21	swapper/5	19:05:15	15
2236753	2	42	36,4	sleep7	0	-21	swapper/7	19:08:57	17
2236652	2	42	37,3	sleep18	0	-21	swapper/18	19:07:48	10
2236646	2	42	37,3	sleep13	0	-21	swapper/13	19:07:42	5
2236586	2	42	35,4	sleep10	0	-21	swapper/10	19:07:00	2
2237245	99	41	0,1	cyclictest	2342532	-40	tracker-miner-f	21:06:58	18
2236464	2	41	37,2	sleep6	0	-21	swapper/6	19:05:36	16
2237255	99	40	39,1	cyclictest	1870	50	irq/149-eno1	21:05:18	3
2236642	2	40	34,3	sleep11	0	-21	swapper/11	19:07:41	3
2235533	2	40	28,7	sleep12	0	-21	swapper/12	19:05:22	4
1973	99	40	0,33	ntpd	0	-21	swapper/16	19:05:20	8
2237277	99	39	0,38	cyclictest	0	-21	swapper/18	23:40:59	10
2236575	2	39	34,3	sleep1	0	-21	swapper/1	19:06:51	1
2237218	99	38	8,29	cyclictest	0	-21	swapper/0	19:53:49	0
2236497	2	38	33,3	sleep14	0	-21	swapper/14	19:06:03	6
2237280	99	37	32,4	cyclictest	0	-21	swapper/19	23:19:59	11
2236674	2	37	34,2	sleep9	0	-21	swapper/9	19:07:59	19
2236573	2	37	31,4	sleep0	0	-21	swapper/0	19:06:50	0
2237259	99	36	10,25	cyclictest	0	-21	swapper/12	00:03:59	4
2237249	99	36	0,35	cyclictest	0	-21	swapper/9	19:29:59	19
2237249	99	36	0,35	cyclictest	0	-21	swapper/9	19:29:59	19
2237229	99	36	32,4	cyclictest	0	-21	swapper/3	22:44:59	13
2237229	99	36	32,4	cyclictest	0	-21	swapper/3	22:44:59	13
2237221	99	36	12,24	cyclictest	0	-21	swapper/1	20:36:40	1
2237277	99	35	0,35	cyclictest	0	-21	swapper/18	00:26:59	10
2237277	99	35	0,34	cyclictest	0	-21	swapper/18	21:19:59	10
2237265	99	35	0,34	cyclictest	2342596	-40	tracker-miner-f	21:07:59	6
2237251	99	35	28,6	cyclictest	0	-21	swapper/10	23:40:59	2
2237249	99	35	0,0	cyclictest	0	-21	swapper/9	23:43:58	19
2237242	99	35	0,34	cyclictest	2438469	-40	tracker-miner-f	22:58:58	17
2237229	99	35	33,2	cyclictest	2455858	-40	tracker-miner-f	23:17:58	13
2237221	99	35	35,0	cyclictest	0	-21	swapper/1	21:05:18	1
2237280	99	34	31,3	cyclictest	0	-21	swapper/19	22:13:59	11
2237280	99	34	0,2	cyclictest	2503189	-40	tracker-miner-f	00:10:52	11
2237277	99	34	32,2	cyclictest	0	-21	swapper/18	21:06:59	10
2237275	99	34	0,33	cyclictest	0	-21	swapper/17	21:52:58	9
2237265	99	34	33,1	cyclictest	2312063	-40	tracker-miner-f	20:33:21	6
2237265	99	34	0,33	cyclictest	2442707	-40	tracker-miner-f	23:01:59	6
2237265	99	34	0,33	cyclictest	0	-21	swapper/14	21:28:58	6
2237261	99	34	0,33	cyclictest	0	-21	swapper/13	23:25:59	5
2237255	99	34	32,1	cyclictest	1870	50	irq/149-eno1	21:21:09	3
2237249	99	34	34,0	cyclictest	0	-21	swapper/9	22:02:59	19
2237249	99	34	34,0	cyclictest	0	-21	swapper/9	20:33:59	19
2237249	99	34	34,0	cyclictest	0	-21	swapper/9	19:15:58	19
2237245	99	34	34,0	cyclictest	0	-21	swapper/8	23:47:59	18
2237245	99	34	0,33	cyclictest	0	-21	swapper/8	23:38:59	18
2237245	99	34	0,33	cyclictest	0	-21	swapper/8	00:36:59	18
2237229	99	34	28,6	cyclictest	0	-21	swapper/3	00:24:59	13
2237229	99	34	27,4	cyclictest	0	-21	swapper/3	23:55:59	13
2237229	99	34	0,1	cyclictest	2416709	-40	tracker-miner-f	22:33:59	13
2237229	99	34	0,1	cyclictest	2416709	-40	tracker-miner-f	22:33:58	13
2237218	99	34	30,2	cyclictest	0	-21	swapper/0	23:19:59	0
2237218	99	34	27,7	cyclictest	0	-21	swapper/0	22:13:58	0
2237218	99	34	0,33	cyclictest	2442984	-40	tracker-miner-f	23:04:40	0
2237218	99	34	0,1	cyclictest	0	-21	swapper/0	19:12:23	0
2237280	99	33	0,0	cyclictest	0	-21	swapper/19	19:12:24	11
2237277	99	33	31,1	cyclictest	0	-21	swapper/18	23:10:58	10
2237271	99	33	33,0	cyclictest	0	-21	swapper/16	21:29:49	8
2237271	99	33	0,33	cyclictest	0	-21	swapper/16	23:27:59	8
2237271	99	33	0,0	cyclictest	0	-21	swapper/16	23:16:59	8
2237265	99	33	32,1	cyclictest	2338193	-40	tracker-miner-f	21:02:59	6
2237265	99	33	0,33	cyclictest	0	-21	swapper/14	21:54:59	6
2237265	99	33	0,33	cyclictest	0	-21	swapper/14	00:07:58	6
2237255	99	33	32,1	cyclictest	1870	50	irq/149-eno1	22:52:27	3
2237255	99	33	32,1	cyclictest	1870	50	irq/149-eno1	22:03:42	3
2237255	99	33	32,1	cyclictest	1870	50	irq/149-eno1	20:36:04	3
2237255	99	33	32,1	cyclictest	1870	50	irq/149-eno1	20:11:19	3
2237251	99	33	25,7	cyclictest	0	-21	swapper/10	21:06:59	2
2237251	99	33	0,33	cyclictest	0	-21	swapper/10	22:13:59	2
2237249	99	33	33,0	cyclictest	0	-21	swapper/9	20:37:59	19
2237249	99	33	0,33	cyclictest	0	-21	swapper/9	21:12:59	19
2237249	99	33	0,0	cyclictest	0	-21	swapper/9	20:24:58	19
2237245	99	33	30,2	cyclictest	0	-21	swapper/8	00:18:59	18
2237236	99	33	32,1	cyclictest	2386031	-40	tracker-miner-f	21:56:59	15
2237236	99	33	0,33	cyclictest	0	-21	swapper/5	23:25:59	15
2237236	99	33	0,0	cyclictest	0	-21	swapper/5	23:50:59	15
2237236	99	33	0,0	cyclictest	0	-21	swapper/5	21:48:59	15
2237231	99	33	33,0	cyclictest	0	-21	swapper/4	00:25:59	14
2237225	99	33	32,1	cyclictest	2303440	-40	tracker-miner-f	20:23:58	12
2237280	99	32	27,5	cyclictest	0	-21	swapper/19	23:40:58	11
2237280	99	32	0,5	cyclictest	2386091	-40	tracker-miner-f	21:57:47	11
2237280	99	32	0,31	cyclictest	0	-21	swapper/19	23:00:44	11
2237280	99	32	0,22	cyclictest	2521402	-40	tracker-miner-f	00:33:17	11
2237280	99	32	0,1	cyclictest	2497619	-21	fschecks_time	00:05:16	11
2237280	99	32	0,1	cyclictest	2371200	-40	tracker-miner-f	21:40:14	11
2237280	99	32	0,1	cyclictest	0	-21	swapper/19	00:29:59	11
2237275	99	32	32,0	cyclictest	0	-21	swapper/17	22:27:58	9
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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