OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #f, slot #7

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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 rackfslot7.osadl.org (updated Thu Nov 27, 2025 00:46:07)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
285067	99	94	11,44	cyclictest	0	-21	swapper/7	23:25:19	7
285066	99	72	32,19	cyclictest	0	-21	swapper/6	20:38:25	6
285066	99	72	31,19	cyclictest	0	-21	swapper/6	20:33:30	6
285066	99	71	32,39	cyclictest	0	-21	swapper/6	21:48:09	6
285066	99	71	31,40	cyclictest	0	-21	swapper/6	20:56:41	6
285066	99	71	31,19	cyclictest	0	-21	swapper/6	23:43:48	6
285066	99	71	31,19	cyclictest	0	-21	swapper/6	21:16:34	6
285066	99	71	31,19	cyclictest	0	-21	swapper/6	00:36:04	6
285066	99	70	31,39	cyclictest	0	-21	swapper/6	21:20:41	6
285066	99	70	31,39	cyclictest	0	-21	swapper/6	00:34:52	6
285066	99	70	31,19	cyclictest	0	-21	swapper/6	22:56:36	6
285066	99	70	31,18	cyclictest	0	-21	swapper/6	23:25:36	6
285066	99	70	30,40	cyclictest	0	-21	swapper/6	23:04:36	6
285064	99	70	49,20	cyclictest	0	-21	swapper/4	20:50:15	4
285066	99	67	27,19	cyclictest	0	-21	swapper/6	23:32:16	6
285064	99	52	14,19	cyclictest	0	-21	swapper/4	00:15:16	4
285063	99	52	14,19	cyclictest	0	-21	swapper/3	21:15:16	3
285061	99	52	14,19	cyclictest	0	-21	swapper/1	22:30:20	1
285060	99	52	33,19	cyclictest	0	-21	swapper/0	19:55:19	0
285066	99	51	32,19	cyclictest	0	-21	swapper/6	20:21:55	6
285065	99	51	13,19	cyclictest	0	-21	swapper/5	19:40:15	5
285064	99	51	13,19	cyclictest	0	-21	swapper/4	21:40:15	4
285064	99	50	32,18	cyclictest	0	-21	swapper/4	20:15:17	4
285064	99	50	12,19	cyclictest	0	-21	swapper/4	21:30:15	4
285065	99	49	12,18	cyclictest	0	-21	swapper/5	23:10:16	5
285067	99	48	9,39	cyclictest	0	-21	swapper/7	21:05:15	7
285066	99	48	29,0	cyclictest	0	-21	swapper/6	21:12:55	6
285063	99	46	7,0	cyclictest	0	-21	swapper/3	22:40:14	3
285061	99	46	8,19	cyclictest	0	-21	swapper/1	20:15:17	1
285060	99	46	8,19	cyclictest	0	-21	swapper/0	23:30:17	0
285064	99	45	26,19	cyclictest	0	-21	swapper/4	23:42:46	4
285064	99	45	26,19	cyclictest	0	-21	swapper/4	00:30:50	4
285063	99	45	6,20	cyclictest	0	-21	swapper/3	00:35:20	3
285065	99	44	26,18	cyclictest	0	-21	swapper/5	23:05:15	5
285063	99	44	6,19	cyclictest	0	-21	swapper/3	00:30:16	3
285063	99	44	6,19	cyclictest	0	-21	swapper/3	00:20:16	3
285064	99	43	25,18	cyclictest	0	-21	swapper/4	23:30:45	4
285060	99	42	4,19	cyclictest	0	-21	swapper/0	23:15:15	0
285066	99	41	0,19	cyclictest	0	-21	swapper/6	19:45:16	6
285065	99	41	22,19	cyclictest	0	-21	swapper/5	21:15:15	5
285063	99	41	3,19	cyclictest	0	-21	swapper/3	20:55:14	3
285060	99	41	22,19	cyclictest	0	-21	swapper/0	19:40:15	0
285066	99	40	0,40	cyclictest	441126	-21	lpstat	23:50:20	6
285066	99	40	0,39	cyclictest	0	-21	swapper/6	20:16:33	6
285066	99	40	0,19	cyclictest	0	-21	swapper/6	22:05:01	6
285066	99	40	0,19	cyclictest	0	-21	swapper/6	19:44:07	6
285065	99	40	1,39	cyclictest	0	-21	swapper/5	21:20:15	5
285061	99	40	2,19	cyclictest	0	-21	swapper/1	19:45:15	1
285066	99	39	0,39	cyclictest	377552	-21	systemd-run	22:00:00	6
285066	99	39	0,39	cyclictest	0	-21	swapper/6	23:57:41	6
285066	99	39	0,39	cyclictest	0	-21	swapper/6	23:47:12	6
285066	99	39	0,39	cyclictest	0	-21	swapper/6	22:52:08	6
285066	99	39	0,39	cyclictest	0	-21	swapper/6	22:48:24	6
285066	99	39	0,39	cyclictest	0	-21	swapper/6	22:35:13	6
285066	99	39	0,39	cyclictest	0	-21	swapper/6	22:30:24	6
285066	99	39	0,39	cyclictest	0	-21	swapper/6	20:14:25	6
285066	99	39	0,39	cyclictest	0	-21	swapper/6	19:59:42	6
285066	99	39	0,39	cyclictest	0	-21	swapper/6	19:26:41	6
285066	99	39	0,39	cyclictest	0	-21	swapper/6	00:27:53	6
285066	99	39	0,39	cyclictest	0	-21	swapper/6	00:10:48	6
285066	99	39	0,39	cyclictest	0	-21	swapper/6	00:08:52	6
285066	99	39	0,39	cyclictest	0	-21	swapper/6	00:02:49	6
285066	99	39	0,39	cyclictest	0	-21	swapper/6	00:02:48	6
285066	99	39	0,20	cyclictest	455437	-21	meminfo	00:15:18	6
285066	99	39	0,19	cyclictest	296859	-21	cpuspeed	19:30:13	6
285066	99	39	0,19	cyclictest	0	-21	swapper/6	22:10:12	6
285066	99	39	0,0	cyclictest	0	-21	swapper/6	21:25:15	6
285063	99	39	0,20	cyclictest	0	-21	swapper/3	19:50:16	3
285060	99	39	20,19	cyclictest	0	-21	swapper/0	00:00:17	0
285060	99	39	20,19	cyclictest	0	-21	swapper/0	00:00:17	0
285066	99	38	0,38	cyclictest	0	-21	swapper/6	23:35:48	6
285066	99	38	0,38	cyclictest	0	-21	swapper/6	23:22:29	6
285066	99	38	0,38	cyclictest	0	-21	swapper/6	23:06:44	6
285066	99	38	0,38	cyclictest	0	-21	swapper/6	20:43:02	6
285066	99	38	0,38	cyclictest	0	-21	swapper/6	20:25:57	6
285066	99	38	0,38	cyclictest	0	-21	swapper/6	19:21:21	6
285066	99	38	0,38	cyclictest	0	-21	swapper/6	00:22:48	6
285065	99	38	0,38	cyclictest	0	-21	swapper/5	23:55:15	5
285063	99	38	0,37	cyclictest	0	-21	swapper/3	00:15:16	3
285061	99	38	0,19	cyclictest	0	-21	swapper/1	21:20:15	1
285061	99	38	0,19	cyclictest	0	-21	swapper/1	20:45:21	1
285063	99	37	0,18	cyclictest	0	-21	swapper/3	20:10:17	3
285061	99	37	12,24	cyclictest	0	-21	swapper/1	20:05:16	1
285060	99	37	37,0	cyclictest	0	-21	swapper/0	22:41:36	0
285060	99	37	37,0	cyclictest	0	-21	swapper/0	00:29:44	0
285060	99	37	19,18	cyclictest	0	-21	swapper/0	22:45:18	0
285060	99	37	18,0	cyclictest	0	-21	swapper/0	21:55:15	0
285067	99	36	0,36	cyclictest	0	-21	swapper/7	20:50:15	7
285064	99	36	0,17	cyclictest	0	-21	swapper/4	20:45:16	4
285061	99	36	12,19	cyclictest	0	-21	swapper/1	22:10:17	1
285061	99	36	12,19	cyclictest	0	-21	swapper/1	21:15:15	1
285060	99	36	36,0	cyclictest	0	-21	swapper/0	23:35:56	0
285060	99	36	36,0	cyclictest	0	-21	swapper/0	21:26:02	0
285060	99	36	36,0	cyclictest	0	-21	swapper/0	21:20:49	0
285060	99	36	36,0	cyclictest	0	-21	swapper/0	20:01:25	0
285060	99	36	18,18	cyclictest	0	-21	swapper/0	21:43:53	0
285060	99	36	17,19	cyclictest	0	-21	swapper/0	22:35:16	0
285067	99	35	0,15	cyclictest	0	-21	swapper/7	00:30:16	7
285066	99	35	0,35	cyclictest	0	-21	swapper/6	21:35:01	6
285066	99	35	0,15	cyclictest	338463	-21	cstates	20:50:13	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2024-07-29 - 23:00