OSADL QA Farm on Real-time of Mainline Linux

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

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

Characteristics of the 100 highest latencies:

System rack6slot0.osadl.org (updated Tue Aug 18, 2026 01:01:42)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
7196	99	270	266,2	cyclictest	16180	-21	kworker/u81:5+events_unbound	21:36:24	1
7196	99	270	266,2	cyclictest	16180	-21	kworker/u81:5+events_unbound	21:36:23	1
7211	99	258	252,4	cyclictest	38323	-21	sh	21:36:24	5
7211	99	258	252,4	cyclictest	38323	-21	sh	21:36:24	5
7197	99	241	227,11	cyclictest	13893	-21	kworker/u81:3+events_unbound	23:51:25	12
7197	99	241	227,11	cyclictest	13893	-21	kworker/u81:3+events_unbound	23:51:25	12
7197	99	238	231,5	cyclictest	0	-21	swapper/2	00:00:27	12
7197	99	238	231,5	cyclictest	0	-21	swapper/2	00:00:27	12
7197	99	238	231,5	cyclictest	0	-21	swapper/2	00:00:26	12
7197	99	238	220,14	cyclictest	0	-21	swapper/2	21:35:16	12
7197	99	238	220,14	cyclictest	0	-21	swapper/2	21:35:15	12
7197	99	237	227,7	cyclictest	0	-21	swapper/2	00:05:21	12
7197	99	237	227,7	cyclictest	0	-21	swapper/2	00:05:21	12
7197	99	235	222,10	cyclictest	0	-21	swapper/2	23:01:38	12
7197	99	235	222,10	cyclictest	0	-21	swapper/2	23:01:38	12
7197	99	234	229,4	cyclictest	0	-21	swapper/2	23:24:17	12
7197	99	234	229,4	cyclictest	0	-21	swapper/2	23:24:17	12
7197	99	234	223,5	cyclictest	0	-21	swapper/2	22:40:21	12
7197	99	234	223,5	cyclictest	0	-21	swapper/2	22:40:21	12
7197	99	234	222,9	cyclictest	0	-21	swapper/2	23:40:13	12
7197	99	234	222,9	cyclictest	0	-21	swapper/2	23:40:13	12
7197	99	229	221,5	cyclictest	0	-21	swapper/2	23:11:57	12
7197	99	229	221,5	cyclictest	0	-21	swapper/2	23:11:57	12
7197	99	229	214,10	cyclictest	0	-21	swapper/2	22:31:41	12
7197	99	229	214,10	cyclictest	0	-21	swapper/2	22:31:40	12
7197	99	228	216,10	cyclictest	0	-21	swapper/2	00:21:16	12
7197	99	228	216,10	cyclictest	0	-21	swapper/2	00:21:15	12
7197	99	227	211,12	cyclictest	0	-21	swapper/2	00:00:01	12
7197	99	227	211,12	cyclictest	0	-21	swapper/2	00:00:01	12
7197	99	227	211,12	cyclictest	0	-21	swapper/2	00:00:01	12
7197	99	226	220,4	cyclictest	0	-21	swapper/2	23:15:11	12
7197	99	226	220,4	cyclictest	0	-21	swapper/2	23:15:11	12
7197	99	226	208,13	cyclictest	0	-21	swapper/2	23:45:23	12
7197	99	226	208,13	cyclictest	0	-21	swapper/2	23:45:22	12
7199	99	224	219,3	cyclictest	8882	-21	kworker/u81:5+events_unbound	21:56:05	34
7199	99	224	219,3	cyclictest	8882	-21	kworker/u81:5+events_unbound	21:56:05	34
7199	99	224	219,3	cyclictest	8882	-21	kworker/u81:5+events_unbound	21:56:05	34
7197	99	224	218,4	cyclictest	0	-21	swapper/2	21:20:55	12
7197	99	224	218,4	cyclictest	0	-21	swapper/2	21:20:54	12
7197	99	223	210,6	cyclictest	3541	-21	CPU		12
7197	99	223	210,6	cyclictest	3541	-21	CPU		12
7197	99	220	212,5	cyclictest	2454	-21	CPU		12
7197	99	220	212,5	cyclictest	2454	-21	CPU		12
7197	99	220	212,5	cyclictest	2454	-21	CPU		12
7197	99	220	208,7	cyclictest	3609	-21	CPU		12
7197	99	220	208,7	cyclictest	3609	-21	CPU		12
7216	99	219	0,7	cyclictest	2456	-21	CPU		9
7216	99	219	0,7	cyclictest	2456	-21	CPU		9
7197	99	219	204,13	cyclictest	0	-21	swapper/2	22:49:30	12
7197	99	219	204,13	cyclictest	0	-21	swapper/2	22:49:29	12
7197	99	219	199,17	cyclictest	0	-21	swapper/2	21:34:18	12
7197	99	219	199,17	cyclictest	0	-21	swapper/2	21:34:18	12
7197	99	218	210,6	cyclictest	40848	-21	sshd	21:19:26	12
7197	99	218	210,6	cyclictest	40848	-21	sshd	21:19:26	12
7197	99	218	210,6	cyclictest	40848	-21	sshd	21:19:26	12
7197	99	216	200,11	cyclictest	0	-21	swapper/2	22:53:56	12
7197	99	216	200,11	cyclictest	0	-21	swapper/2	22:53:56	12
7197	99	215	209,4	cyclictest	0	-21	swapper/2	23:09:56	12
7197	99	215	209,4	cyclictest	0	-21	swapper/2	23:09:55	12
7197	99	215	204,9	cyclictest	0	-21	swapper/2	22:01:28	12
7197	99	215	204,9	cyclictest	0	-21	swapper/2	22:01:28	12
7197	99	215	203,8	cyclictest	40921	-21	cp	21:40:15	12
7197	99	215	203,8	cyclictest	40921	-21	cp	21:40:15	12
7197	99	215	195,10	cyclictest	0	-21	swapper/2	21:45:16	12
7197	99	215	195,10	cyclictest	0	-21	swapper/2	21:45:15	12
7221	99	214	210,3	cyclictest	372	-21	kswapd0	20:20:21	15
7221	99	214	210,3	cyclictest	372	-21	kswapd0	20:20:21	15
7197	99	214	203,8	cyclictest	0	-21	swapper/2	22:36:18	12
7197	99	214	203,8	cyclictest	0	-21	swapper/2	22:36:18	12
7197	99	214	203,7	cyclictest	37268	-21	CPU		12
7197	99	214	203,7	cyclictest	37268	-21	CPU		12
7197	99	214	171,30	cyclictest	0	-21	swapper/2	00:25:23	12
7197	99	214	171,30	cyclictest	0	-21	swapper/2	00:25:22	12
7197	99	212	203,4	cyclictest	0	-21	swapper/2	23:30:15	12
7197	99	212	203,4	cyclictest	0	-21	swapper/2	23:30:15	12
7197	99	210	195,11	cyclictest	3547	-21	CPU		12
7197	99	210	195,11	cyclictest	3547	-21	CPU		12
7222	99	209	199,8	cyclictest	17676	-21	kworker/u81:6+events_unbound	23:12:01	16
7222	99	209	199,8	cyclictest	17676	-21	kworker/u81:6+events_unbound	23:12:01	16
7197	99	209	200,5	cyclictest	4407	-21	CPU		12
7197	99	209	200,5	cyclictest	4407	-21	CPU		12
7197	99	208	200,6	cyclictest	0	-21	swapper/2	00:35:49	12
7197	99	208	200,6	cyclictest	0	-21	swapper/2	00:35:49	12
7197	99	208	200,6	cyclictest	0	-21	swapper/2	00:35:48	12
7197	99	208	196,9	cyclictest	0	-21	swapper/2	19:49:51	12
7197	99	208	196,9	cyclictest	0	-21	swapper/2	19:49:51	12
7197	99	208	193,10	cyclictest	3546	-21	CPU		12
7197	99	208	193,10	cyclictest	3546	-21	CPU		12
7197	99	208	193,10	cyclictest	3546	-21	CPU		12
7205	99	207	201,4	cyclictest	7629	-21	kworker/u81:5+events_unbound	22:43:55	39
7205	99	207	201,4	cyclictest	7629	-21	kworker/u81:5+events_unbound	22:43:55	39
7197	99	207	189,15	cyclictest	0	-21	swapper/2	21:15:03	12
7197	99	207	189,15	cyclictest	0	-21	swapper/2	21:15:03	12
7197	99	207	186,14	cyclictest	0	-21	swapper/2	23:30:01	12
7197	99	207	186,14	cyclictest	0	-21	swapper/2	23:30:01	12
7198	99	206	201,3	cyclictest	35834	-21	kworker/u81:0+events_unbound	00:13:03	23
7198	99	206	201,3	cyclictest	35834	-21	kworker/u81:0+events_unbound	00:13:03	23
7198	99	206	201,3	cyclictest	35834	-21	kworker/u81:0+events_unbound	00:13:02	23
7197	99	206	190,13	cyclictest	0	-21	swapper/2	00:13:31	12
7197	99	206	190,13	cyclictest	0	-21	swapper/2	00:13:30	12
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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