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 Sep 11, 2026 00:46:14)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
285774	20	78	0,76	data-loop.0	0	-21	swapper/6	19:06:27	16
1491007	10	77	0,46	AudioIP~allback	0	-21	swapper/8	19:05:30	18
1491007	10	71	0,69	AudioIP~allback	0	-21	swapper/18	19:07:17	10
285774	20	70	0,63	data-loop.0	0	-21	swapper/13	19:07:06	5
1718253	10	70	0,67	AudioIP~allback	0	-21	swapper/11	19:06:55	3
6475	20	69	0,45	data-loop.0	0	-21	swapper/9	19:05:13	19
285774	20	68	0,65	data-loop.0	0	-21	swapper/4	19:07:23	14
285774	20	67	0,64	data-loop.0	0	-21	swapper/10	19:05:53	2
285774	20	66	0,64	data-loop.0	0	-21	swapper/2	19:08:04	12
285774	20	64	0,62	data-loop.0	0	-21	swapper/19	19:08:41	11
285774	20	64	0,61	data-loop.0	0	-21	swapper/3	19:06:22	13
285774	20	63	0,56	data-loop.0	0	-21	swapper/16	19:05:29	8
285774	20	62	0,60	data-loop.0	0	-21	swapper/15	19:08:36	7
285774	20	62	0,60	data-loop.0	0	-21	swapper/14	19:09:26	6
285774	20	62	0,52	data-loop.0	0	-21	swapper/12	19:09:01	4
285774	20	61	0,59	data-loop.0	0	-21	swapper/7	19:09:31	17
285774	20	60	0,58	data-loop.0	0	-21	swapper/0	19:05:40	0
285774	20	59	0,57	data-loop.0	0	-21	swapper/17	19:09:27	9
1718253	10	58	0,55	AudioIP~allback	0	-21	swapper/1	19:07:34	1
285774	20	57	0,56	data-loop.0	0	-21	swapper/5	19:09:26	15
2225673	99	48	12,36	cyclictest	152	1	rcuc/14	23:00:04	6
2225657	99	47	46,1	cyclictest	1870	50	irq/149-eno1	21:50:35	19
2225630	99	47	45,1	cyclictest	285774	20	data-loop.0	21:42:19	0
2225657	99	46	9,37	cyclictest	105	1	rcuc/9	23:00:05	19
2225647	99	46	0,35	cyclictest	2430862	-40	tracker-miner-f	22:50:55	16
2225647	99	46	0,35	cyclictest	2303582	-40	tracker-miner-f	20:32:31	16
2225647	99	46	0,34	cyclictest	2249058	-40	tracker-miner-f	19:32:57	16
2225633	99	46	46,0	cyclictest	0	-21	swapper/1	22:00:23	1
2225633	99	46	45,1	cyclictest	0	-21	swapper/1	23:20:28	1
2225630	99	46	45,0	cyclictest	0	-21	swapper/0	22:10:54	0
2225677	99	45	41,4	cyclictest	2467286	-40	tracker-miner-f	23:31:02	7
2225677	99	45	0,44	cyclictest	1492185	-21	WebExtensions	23:38:37	7
2225677	99	45	0,1	cyclictest	2440254	-40	tracker-miner-f	23:03:34	7
2225669	99	45	0,45	cyclictest	0	-21	swapper/13	00:03:15	5
2225642	99	45	8,37	cyclictest	60	1	rcuc/4	23:00:05	14
2225638	99	45	7,37	cyclictest	0	-21	swapper/3	23:00:05	13
2225688	99	44	44,0	cyclictest	0	-21	swapper/19	22:41:17	11
2225678	99	44	39,4	cyclictest	1490795	-21	firefox	22:41:18	8
2225678	99	44	0,35	cyclictest	2235657	-40	tracker-miner-f	19:20:25	8
2225678	99	44	0,1	cyclictest	2367634	-40	tracker-miner-f	21:45:35	8
2225677	99	44	13,6	cyclictest	0	-21	swapper/15	20:30:21	7
2225669	99	44	39,4	cyclictest	5468	-21	CPU		5
2225652	99	44	22,1	cyclictest	0	-21	swapper/7	20:32:15	17
2225647	99	44	0,35	cyclictest	5412	-21	qemu-system-x86	21:04:42	16
2225647	99	44	0,34	cyclictest	0	-21	swapper/6	20:12:57	16
2225645	99	44	0,34	cyclictest	2504079	-40	tracker-miner-f	00:13:53	15
2225645	99	44	0,33	cyclictest	0	-21	swapper/5	20:35:19	15
2225630	99	44	7,37	cyclictest	2522427	-40	tracker-miner-f	00:34:31	0
2225630	99	44	7,37	cyclictest	2522427	-40	tracker-miner-f	00:34:31	0
2225688	99	43	43,0	cyclictest	0	-21	swapper/19	00:12:48	11
2225678	99	43	32,10	cyclictest	0	-21	swapper/16	21:19:37	8
2225678	99	43	32,10	cyclictest	0	-21	swapper/16	21:19:37	8
2225678	99	43	0,42	cyclictest	0	-21	swapper/16	19:58:30	8
2225678	99	43	0,34	cyclictest	2513056	-40	tracker-miner-f	00:22:40	8
2225678	99	43	0,34	cyclictest	0	-21	swapper/16	00:39:59	8
2225677	99	43	32,10	cyclictest	0	-21	swapper/15	00:24:12	7
2225677	99	43	0,42	cyclictest	2421981	-40	tracker-miner-f	22:42:33	7
2225673	99	43	42,1	cyclictest	2385823	-40	tracker-miner-f	22:05:15	6
2225669	99	43	42,1	cyclictest	1491336	-21	Isolated	08:49:04	5
2225662	99	43	0,1	cyclictest	1491336	-21	Isolated	08:49:04	2
2225657	99	43	30,12	cyclictest	0	-21	swapper/9	19:43:16	19
2225647	99	43	33,9	cyclictest	2262802	-40	tracker-miner-f	19:49:06	16
2225647	99	43	32,10	cyclictest	0	-21	swapper/6	20:45:49	16
2225647	99	43	0,42	cyclictest	2494600	-40	tracker-miner-f	00:01:07	16
2225647	99	43	0,42	cyclictest	2271544	-40	tracker-miner-f	19:55:39	16
2225647	99	43	0,42	cyclictest	1491336	-21	Isolated	08:49:04	16
2225647	99	43	0,33	cyclictest	0	-21	swapper/6	22:47:53	16
2225645	99	43	0,34	cyclictest	2303582	-40	tracker-miner-f	20:32:32	15
2225633	99	43	43,0	cyclictest	0	-21	swapper/1	23:37:10	1
2225633	99	43	42,1	cyclictest	2299085	-40	tracker-miner-f	20:27:32	1
2225633	99	43	39,4	cyclictest	0	-21	swapper/1	21:35:05	1
2225630	99	43	43,0	cyclictest	0	-21	swapper/0	00:03:15	0
2225688	99	42	35,1	cyclictest	1491346	-21	StyleThread#1	23:26:49	11
2225688	99	42	30,12	cyclictest	2513312	-40	tracker-miner-f	00:25:29	11
2225688	99	42	30,12	cyclictest	2513312	-40	tracker-miner-f	00:25:28	11
2225678	99	42	31,10	cyclictest	0	-21	swapper/16	21:13:48	8
2225678	99	42	31,10	cyclictest	0	-21	swapper/16	21:13:48	8
2225678	99	42	30,11	cyclictest	0	-21	swapper/16	21:30:27	8
2225678	99	42	0,41	cyclictest	0	-21	swapper/16	19:45:19	8
2225678	99	42	0,33	cyclictest	0	-21	swapper/16	23:48:32	8
2225678	99	42	0,1	cyclictest	2335292	-40	tracker-miner-f	21:05:31	8
2225678	99	42	0,0	cyclictest	0	-21	swapper/16	23:16:43	8
2225677	99	42	41,1	cyclictest	6454	-10	pipewire-pulse	19:48:18	7
2225677	99	42	32,9	cyclictest	0	-21	swapper/15	20:36:35	7
2225677	99	42	32,10	cyclictest	0	-21	swapper/15	00:38:35	7
2225677	99	42	0,1	cyclictest	2462984	-40	tracker-miner-f	23:28:41	7
2225677	99	42	0,0	cyclictest	0	-21	swapper/15	00:00:39	7
2225673	99	42	34,3	cyclictest	2399043	-40	tracker-miner-f	22:16:05	6
2225669	99	42	42,0	cyclictest	0	-21	swapper/13	22:10:54	5
2225667	99	42	20,22	cyclictest	0	-21	swapper/12	19:28:31	4
2225657	99	42	41,0	cyclictest	0	-21	swapper/9	19:22:51	19
2225647	99	42	31,10	cyclictest	2508393	-40	tracker-miner-f	00:16:42	16
2225647	99	42	31,10	cyclictest	2476703	-40	tracker-miner-f	23:44:02	16
2225647	99	42	0,41	cyclictest	0	-21	swapper/6	23:01:26	16
2225647	99	42	0,41	cyclictest	0	-21	swapper/6	20:55:41	16
2225647	99	42	0,33	cyclictest	2467460	-40	tracker-miner-f	23:33:15	16
2225647	99	42	0,33	cyclictest	2394663	-40	tracker-miner-f	22:12:08	16
2225647	99	42	0,33	cyclictest	0	-21	swapper/6	21:43:40	16
2225647	99	42	0,1	cyclictest	0	-21	swapper/6	20:35:19	16
2225647	99	42	0,0	cyclictest	0	-21	swapper/6	21:55:34	16
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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