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 Sun Jul 19, 2026 01:01:51)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
29161	99	219	190,20	cyclictest	0	-21	swapper/29	22:50:12	22
29161	99	219	190,20	cyclictest	0	-21	swapper/29	22:50:12	22
29161	99	208	166,17	cyclictest	0	-21	swapper/29	23:03:45	22
29161	99	208	166,17	cyclictest	0	-21	swapper/29	23:03:45	22
29134	99	206	190,12	cyclictest	0	-21	swapper/7	20:01:17	37
29134	99	206	190,12	cyclictest	0	-21	swapper/7	20:01:17	37
29170	99	197	187,8	cyclictest	0	-21	swapper/38	23:30:01	32
29170	99	197	187,8	cyclictest	0	-21	swapper/38	23:30:01	32
29132	99	197	192,3	cyclictest	6191	-21	kworker/u81:2+events_unbound	23:03:03	36
29132	99	197	192,3	cyclictest	6191	-21	kworker/u81:2+events_unbound	23:03:02	36
29131	99	197	157,37	cyclictest	6191	-21	kworker/u81:2+events_unbound	23:22:58	35
29131	99	197	157,37	cyclictest	6191	-21	kworker/u81:2+events_unbound	23:22:58	35
29163	99	194	177,14	cyclictest	0	-21	swapper/31	23:51:36	25
29163	99	194	177,14	cyclictest	0	-21	swapper/31	23:51:36	25
29153	99	193	152,31	cyclictest	0	-21	swapper/23	00:10:45	16
29153	99	193	152,31	cyclictest	0	-21	swapper/23	00:10:44	16
29155	99	189	168,18	cyclictest	0	-21	swapper/25	00:29:17	18
29155	99	189	168,18	cyclictest	0	-21	swapper/25	00:29:17	18
29155	99	189	168,18	cyclictest	0	-21	swapper/25	00:29:17	18
29150	99	189	180,5	cyclictest	0	-21	swapper/20	21:12:36	13
29150	99	189	180,5	cyclictest	0	-21	swapper/20	21:12:35	13
29165	99	188	178,2	cyclictest	0	-21	swapper/33	21:40:38	27
29165	99	188	178,2	cyclictest	0	-21	swapper/33	21:40:38	27
29165	99	187	173,7	cyclictest	0	-21	swapper/33	23:36:02	27
29165	99	187	173,7	cyclictest	0	-21	swapper/33	23:36:02	27
29134	99	186	182,2	cyclictest	0	-21	swapper/7	00:22:42	37
29134	99	186	182,2	cyclictest	0	-21	swapper/7	00:22:42	37
29134	99	186	182,2	cyclictest	0	-21	swapper/7	00:22:41	37
29136	99	185	163,18	cyclictest	0	-21	swapper/8	00:30:05	38
29136	99	185	163,18	cyclictest	0	-21	swapper/8	00:30:05	38
29136	99	185	163,18	cyclictest	0	-21	swapper/8	00:30:04	38
29136	99	184	177,5	cyclictest	0	-21	swapper/8	21:47:14	38
29136	99	184	177,5	cyclictest	0	-21	swapper/8	21:47:14	38
29136	99	184	177,5	cyclictest	0	-21	swapper/8	21:47:14	38
29163	99	183	173,8	cyclictest	0	-21	swapper/31	23:02:04	25
29163	99	183	173,8	cyclictest	0	-21	swapper/31	23:02:03	25
29163	99	183	172,8	cyclictest	0	-21	swapper/31	23:48:38	25
29163	99	183	172,8	cyclictest	0	-21	swapper/31	23:48:38	25
29146	99	183	154,27	cyclictest	0	-21	swapper/17	20:05:31	9
29146	99	183	154,27	cyclictest	0	-21	swapper/17	20:05:31	9
29136	99	183	175,3	cyclictest	3609	-21	CPU		38
29136	99	183	175,3	cyclictest	3609	-21	CPU		38
29126	99	183	178,3	cyclictest	33872	-21	kworker/u81:3+events_unbound	20:40:09	1
29126	99	183	178,3	cyclictest	33872	-21	kworker/u81:3+events_unbound	20:40:08	1
29150	99	182	149,8	cyclictest	17	1	rcu_preempt	23:59:45	13
29150	99	182	149,8	cyclictest	17	1	rcu_preempt	23:59:45	13
29161	99	181	169,6	cyclictest	0	-21	swapper/29	19:20:02	22
29161	99	181	169,6	cyclictest	0	-21	swapper/29	19:20:01	22
29150	99	181	170,10	cyclictest	0	-21	swapper/20	00:11:16	13
29150	99	181	170,10	cyclictest	0	-21	swapper/20	00:11:16	13
29136	99	181	170,9	cyclictest	0	-21	swapper/8	22:13:06	38
29136	99	181	170,9	cyclictest	0	-21	swapper/8	22:13:06	38
29136	99	181	170,9	cyclictest	0	-21	swapper/8	22:13:05	38
29131	99	181	152,25	cyclictest	16156	-21	kworker/u81:1+events_unbound	00:10:59	35
29131	99	181	152,25	cyclictest	16156	-21	kworker/u81:1+events_unbound	00:10:59	35
29159	99	180	160,12	cyclictest	3541	-21	CPU		21
29159	99	180	160,12	cyclictest	3541	-21	CPU		21
29163	99	179	172,5	cyclictest	0	-21	swapper/31	23:20:15	25
29163	99	179	172,5	cyclictest	0	-21	swapper/31	23:20:14	25
29161	99	179	168,7	cyclictest	0	-21	swapper/29	00:19:52	22
29161	99	179	168,7	cyclictest	0	-21	swapper/29	00:19:51	22
29150	99	179	152,10	cyclictest	17	1	rcu_preempt	22:49:35	13
29150	99	179	152,10	cyclictest	17	1	rcu_preempt	22:49:35	13
29131	99	179	172,4	cyclictest	28459	-21	kworker/u81:4+events_unbound	23:11:35	35
29131	99	179	172,4	cyclictest	28459	-21	kworker/u81:4+events_unbound	23:11:35	35
29163	99	178	167,9	cyclictest	0	-21	swapper/31	20:15:18	25
29163	99	178	167,9	cyclictest	0	-21	swapper/31	20:15:18	25
29159	99	178	148,26	cyclictest	3542	-21	CPU		21
29159	99	178	148,26	cyclictest	3542	-21	CPU		21
29155	99	178	160,16	cyclictest	0	-21	swapper/25	20:30:19	18
29155	99	178	160,16	cyclictest	0	-21	swapper/25	20:30:18	18
29154	99	178	112,62	cyclictest	1279	-21	kworker/u81:3+events_unbound	00:09:43	17
29154	99	178	112,62	cyclictest	1279	-21	kworker/u81:3+events_unbound	00:09:43	17
29136	99	178	171,5	cyclictest	0	-21	swapper/8	22:43:04	38
29136	99	178	171,5	cyclictest	0	-21	swapper/8	22:43:04	38
29136	99	178	171,5	cyclictest	0	-21	swapper/8	22:43:04	38
29163	99	177	164,8	cyclictest	0	-21	swapper/31	19:47:50	25
29163	99	177	164,8	cyclictest	0	-21	swapper/31	19:47:50	25
29155	99	177	166,9	cyclictest	0	-21	swapper/25	23:41:01	18
29155	99	177	166,9	cyclictest	0	-21	swapper/25	23:41:01	18
29151	99	177	67,98	cyclictest	1285	-21	jbd2/sdb1-8	23:40:17	14
29151	99	177	67,98	cyclictest	1285	-21	jbd2/sdb1-8	23:40:17	14
29150	99	177	170,6	cyclictest	0	-21	swapper/20	22:44:16	13
29150	99	177	170,6	cyclictest	0	-21	swapper/20	22:44:16	13
29150	99	177	170,6	cyclictest	0	-21	swapper/20	22:44:16	13
29129	99	177	172,3	cyclictest	4714	-21	kworker/u81:0+events_unbound	23:10:52	23
29129	99	177	172,3	cyclictest	4714	-21	kworker/u81:0+events_unbound	23:10:52	23
29136	99	176	160,10	cyclictest	0	-21	swapper/8	22:00:40	38
29136	99	176	160,10	cyclictest	0	-21	swapper/8	22:00:40	38
29134	99	176	138,27	cyclictest	0	-21	swapper/7	22:16:32	37
29134	99	176	138,27	cyclictest	0	-21	swapper/7	22:16:32	37
29159	99	175	154,9	cyclictest	0	-21	swapper/28	22:43:03	21
29159	99	175	154,9	cyclictest	0	-21	swapper/28	22:43:03	21
29159	99	175	154,9	cyclictest	0	-21	swapper/28	22:43:03	21
29136	99	175	169,2	cyclictest	0	-21	swapper/8	22:57:06	38
29136	99	175	169,2	cyclictest	0	-21	swapper/8	22:57:06	38
29136	99	175	168,5	cyclictest	0	-21	swapper/8	22:24:31	38
29136	99	175	168,5	cyclictest	0	-21	swapper/8	22:24:31	38
29163	99	174	153,10	cyclictest	14239	-21	kworker/u82:0-events_unbound	21:23:28	25
29163	99	174	153,10	cyclictest	14239	-21	kworker/u82:0-events_unbound	21:23:28	25
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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