OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #e, slot #3

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 rackeslot3.osadl.org (updated Sat Aug 22, 2026 00:43:50)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
4051151	99	67	64,2	cyclictest	0	-21	swapper/1	19:40:29	1
4051151	99	66	63,2	cyclictest	0	-21	swapper/1	21:01:01	1
4051151	99	65	60,3	cyclictest	0	-21	swapper/1	19:18:48	1
4051151	99	63	0,61	cyclictest	0	-21	swapper/1	20:03:48	1
4051151	99	62	42,19	cyclictest	51888	-21	kworker/1:1	00:20:14	1
4051151	99	62	42,19	cyclictest	4082913	-21	kworker/1:2	20:55:14	1
4051151	99	61	42,18	cyclictest	24107	-21	kworker/1:0	23:32:54	1
4051151	99	61	40,19	cyclictest	4131316	-21	kworker/1:1	22:00:14	1
4051151	99	60	44,15	cyclictest	4076483	-21	kworker/1:0	20:45:12	1
4051151	99	60	43,16	cyclictest	29171	-21	kworker/1:1	23:40:13	1
4051151	99	60	42,17	cyclictest	4182228	-21	kworker/1:2	22:55:02	1
4051151	99	60	42,17	cyclictest	4055533	-21	kworker/1:3	19:25:12	1
4051151	99	60	41,17	cyclictest	4150645	-21	kworker/1:0	22:30:12	1
4051151	99	59	43,15	cyclictest	4088192	-21	kworker/1:3	21:17:48	1
4051151	99	59	43,15	cyclictest	4055533	-21	kworker/1:3	19:20:48	1
4051151	99	59	42,16	cyclictest	51888	-21	kworker/1:1	00:10:14	1
4051151	99	59	42,16	cyclictest	4125795	-21	kworker/1:0	22:10:14	1
4051151	99	59	42,16	cyclictest	4109409	-21	kworker/1:2	21:35:16	1
4051151	99	59	42,16	cyclictest	4099758	-21	kworker/1:0	21:25:14	1
4051151	99	59	42,16	cyclictest	4076483	-21	kworker/1:0	20:40:15	1
4051151	99	59	42,16	cyclictest	4065421	-21	kworker/1:2	20:20:00	1
4051151	99	59	42,16	cyclictest	4052570	-21	kworker/1:1	19:45:49	1
4051151	99	59	42,16	cyclictest	4052570	-21	kworker/1:1	19:30:34	1
4051151	99	59	42,16	cyclictest	29171	-21	kworker/1:1	23:45:34	1
4051151	99	59	42,16	cyclictest	24107	-21	kworker/1:0	23:36:26	1
4051151	99	59	42,16	cyclictest	1141507	-1	kworker/1:2H	20:05:14	1
4051151	99	59	41,17	cyclictest	4153112	-21	kworker/1:3	22:21:13	1
4051151	99	59	41,17	cyclictest	4065421	-21	kworker/1:2	20:10:23	1
4051151	99	59	41,17	cyclictest	12781	-21	kworker/1:1	23:20:06	1
4051151	99	59	41,16	cyclictest	67964	-21	kworker/1:2	00:30:14	1
4051151	99	59	40,18	cyclictest	29171	-21	kworker/1:1	23:50:14	1
4051151	99	59	40,17	cyclictest	4121329	-21	kworker/1:3	21:45:15	1
4051151	99	59	40,17	cyclictest	4082913	-21	kworker/1:2	20:50:14	1
4051151	99	59	39,18	cyclictest	1141507	-1	kworker/1:2H	21:15:00	1
4051151	99	59	38,19	cyclictest	4094732	-21	kworker/1:2	21:20:15	1
4051151	99	59	38,19	cyclictest	1141507	-1	kworker/1:2H	23:56:43	1
4051151	99	59	36,21	cyclictest	41696	-21	kworker/1:0	00:00:13	1
4051151	99	58	41,16	cyclictest	51888	-21	kworker/1:1	00:18:51	1
4051151	99	58	41,16	cyclictest	4125795	-21	kworker/1:0	22:05:07	1
4051151	99	58	41,16	cyclictest	4065421	-21	kworker/1:2	19:55:14	1
4051151	99	58	41,16	cyclictest	4065421	-21	kworker/1:2	19:55:13	1
4051151	99	58	41,16	cyclictest	1141507	-1	kworker/1:2H	22:25:14	1
4051151	99	58	40,17	cyclictest	8107	-21	kworker/1:2	23:15:15	1
4051151	99	58	40,17	cyclictest	4076483	-21	kworker/1:0	20:30:15	1
4051151	99	58	40,17	cyclictest	4065421	-21	kworker/1:2	20:25:12	1
4051151	99	58	39,17	cyclictest	4177506	-21	kworker/1:0	22:50:14	1
4051151	99	58	39,17	cyclictest	4121329	-21	kworker/1:3	21:54:19	1
4051151	99	57	8,47	cyclictest	4192264	-21	kworker/1:1	23:05:43	1
4051151	99	57	40,16	cyclictest	55036	-21	kworker/1:3	00:05:15	1
4051151	99	57	40,16	cyclictest	4167912	-21	kworker/1:1	22:45:00	1
4051151	99	57	40,16	cyclictest	4065421	-21	kworker/1:2	20:15:23	1
4051151	99	57	40,16	cyclictest	4052570	-21	kworker/1:1	19:35:12	1
4051151	99	57	40,16	cyclictest	4050996	-21	kworker/1:2	19:10:37	1
4051151	99	57	39,17	cyclictest	4052570	-21	kworker/1:1	19:50:18	1
4051151	99	57	38,18	cyclictest	67964	-21	kworker/1:2	00:25:34	1
4051151	99	57	38,18	cyclictest	67964	-21	kworker/1:2	00:25:33	1
4051151	99	57	38,17	cyclictest	4150645	-21	kworker/1:0	22:40:13	1
4051151	99	57	22,33	cyclictest	0	-21	swapper/1	23:04:56	1
4051151	99	56	38,16	cyclictest	4150645	-21	kworker/1:0	22:35:14	1
4051151	99	56	36,19	cyclictest	72578	-21	kworker/1:0	00:35:14	1
4051148	99	56	50,3	cyclictest	1401721	-1	kworker/0:0H	21:35:14	0
4051159	99	55	50,3	cyclictest	4104411	-21	kworker/3:1	21:29:59	3
4051156	99	55	50,3	cyclictest	4068774	-21	kworker/2:0	20:06:06	2
4051156	99	55	48,4	cyclictest	3685223	-1	kworker/2:2H	23:30:01	2
4051151	99	55	37,16	cyclictest	4125795	-21	kworker/1:0	21:55:21	1
4051151	99	55	37,16	cyclictest	18617	-21	kworker/1:3	23:25:20	1
4051151	99	55	36,18	cyclictest	4084452	-21	kworker/1:1	21:05:01	1
4051151	99	55	36,17	cyclictest	4076483	-21	kworker/1:0	20:35:11	1
4051151	99	55	28,26	cyclictest	4114206	-21	kworker/1:1	21:40:12	1
4051148	99	55	50,3	cyclictest	1401721	-1	kworker/0:0H	22:55:10	0
4051159	99	54	49,3	cyclictest	4170481	-21	kworker/3:1	22:50:48	3
4051156	99	54	49,3	cyclictest	4048213	-21	kworker/2:0	19:18:02	2
4051156	99	54	47,5	cyclictest	61864	-21	kworker/2:2	00:32:43	2
4051151	99	54	37,16	cyclictest	4109409	-21	kworker/1:2	21:34:59	1
4051151	99	54	36,17	cyclictest	3273	-21	kworker/1:0	23:13:48	1
4051156	99	53	48,4	cyclictest	4120368	-21	kworker/2:0	21:49:19	2
4051156	99	53	48,3	cyclictest	26471	-21	kworker/2:0	23:36:20	2
4051156	99	53	46,5	cyclictest	4057704	-21	kworker/2:1	19:35:24	2
4051151	99	53	35,17	cyclictest	4140865	-21	kworker/1:1	22:15:02	1
4051156	99	52	47,3	cyclictest	4150832	-21	kworker/2:1	22:18:12	2
4051156	99	52	47,3	cyclictest	2454	-21	kworker/2:2	23:09:48	2
4051156	99	52	46,4	cyclictest	4120368	-21	kworker/2:0	22:05:53	2
4051159	99	51	48,2	cyclictest	4067279	-21	kworker/3:2	20:40:00	3
4051159	99	51	48,2	cyclictest	20305	-21	kworker/3:0	00:39:47	3
4051159	99	51	46,3	cyclictest	4125097	-21	kworker/3:2	22:00:44	3
4051156	99	51	47,2	cyclictest	4057704	-21	kworker/2:1	19:45:05	2
4051156	99	51	46,3	cyclictest	4120368	-21	kworker/2:0	22:10:13	2
4051156	99	51	46,3	cyclictest	4096530	-21	kworker/2:0	21:22:14	2
4051156	99	51	46,3	cyclictest	4078275	-21	kworker/2:1	20:35:28	2
4051148	99	51	47,2	cyclictest	4175049	-21	kworker/0:0	22:50:34	0
4051159	99	50	44,3	cyclictest	3299579	-1	kworker/3:0H	22:55:10	3
4051156	99	50	46,3	cyclictest	4078275	-21	kworker/2:1	20:45:20	2
4051156	99	50	46,3	cyclictest	3685223	-1	kworker/2:2H	23:47:47	2
4051156	99	50	46,2	cyclictest	4078275	-21	kworker/2:1	21:00:06	2
4051148	99	50	47,2	cyclictest	4168931	-21	kworker/0:2	22:40:44	0
4051148	99	50	47,2	cyclictest	4119278	-21	kworker/0:1	22:30:04	0
4051148	99	50	47,2	cyclictest	4084445	-21	kworker/0:0	21:42:17	0
4051148	99	50	47,2	cyclictest	4073386	-21	kworker/0:1	20:31:48	0
4051148	99	50	47,2	cyclictest	4053324	-21	kworker/0:1	19:23:47	0
4051148	99	50	45,3	cyclictest	1401721	-1	kworker/0:0H	00:38:54	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2021-09-01 - 00:33