OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #7, slot #2

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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack7slot2.osadl.org (updated Sat Dec 06, 2025 00:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3935326	99	139	122,8	cyclictest	4048650	-21	kworker/u4:9+events_unbound	23:02:04	0
3935327	99	134	120,7	cyclictest	4013934	-21	kworker/u4:0+events_unbound	22:16:13	1
3935326	99	128	115,5	cyclictest	4097702	-21	kworker/u4:1+events_unbound	23:57:17	0
3935326	99	121	114,5	cyclictest	3981269	-21	kworker/u4:7+events_unbound	21:31:46	0
3935326	99	121	111,7	cyclictest	3941806	-21	kworker/u4:17+events_unbound	19:40:44	0
3935326	99	120	111,6	cyclictest	4009845	-21	kworker/u4:8+events_unbound	22:26:59	0
3935326	99	119	110,7	cyclictest	4009845	-21	kworker/u4:8+events_unbound	22:11:56	0
3935326	99	115	107,6	cyclictest	4097705	-21	kworker/u4:8+events_unbound	00:03:40	0
3935326	99	113	105,6	cyclictest	3702509	-21	kworker/u4:2+events_unbound	19:25:40	0
3935327	99	112	93,6	cyclictest	3702508	-21	kworker/u4:1+events_unbound	19:10:39	1
3935326	99	112	104,6	cyclictest	3952201	-21	kworker/u4:7+events_unbound	20:15:50	0
3935326	99	112	104,6	cyclictest	3948325	-21	kworker/u4:6+events_unbound	20:05:50	0
3935327	99	109	101,5	cyclictest	4097704	-21	kworker/u4:7+events_unbound	00:18:59	1
3935326	99	106	98,6	cyclictest	4037307	-21	kworker/u4:3+events_unbound	22:51:19	0
3935326	99	106	98,6	cyclictest	4022062	-21	kworker/u4:2+events_unbound	22:37:02	0
3935326	99	104	96,6	cyclictest	3933952	-21	kworker/u4:6+events_unbound	19:20:40	0
3935326	99	104	95,6	cyclictest	3702510	-21	kworker/u4:5+events_unbound	19:35:44	0
3935327	99	103	95,6	cyclictest	3952200	-21	kworker/u4:6+events_unbound	20:50:57	1
3935326	99	102	95,5	cyclictest	3989643	-21	kworker/u4:0+events_unbound	21:41:51	0
3935326	99	102	89,5	cyclictest	4063833	-21	kworker/u4:8+events_unbound	23:47:27	0
3935326	99	101	90,7	cyclictest	3933953	-21	kworker/u4:7+events_unbound	19:15:38	0
3935326	99	101	84,7	cyclictest	4082324	-21	kworker/u4:3+events_unbound	23:41:30	0
3935326	99	100	92,6	cyclictest	4124893	-21	kworker/u4:0+events_unbound	00:38:23	0
3935326	99	100	92,6	cyclictest	4052505	-21	kworker/u4:11+events_unbound	23:31:28	0
3935326	99	100	91,7	cyclictest	3953569	-21	kworker/u4:11+events_unbound	20:46:37	0
3935327	99	98	88,7	cyclictest	4048645	-21	kworker/u4:5+events_unbound	23:07:05	1
3935326	99	96	87,6	cyclictest	3941807	-21	kworker/u4:18+events_unbound	19:45:45	0
3935327	99	95	80,7	cyclictest	3957451	-21	kworker/u4:9+events_unbound	21:01:39	1
3935326	99	95	86,6	cyclictest	4052505	-21	kworker/u4:11+events_unbound	23:21:25	0
3935327	99	94	87,5	cyclictest	4048649	-21	kworker/u4:7+events_unbound	22:57:06	1
3935327	99	94	87,5	cyclictest	4048649	-21	kworker/u4:7+events_unbound	22:57:06	1
3935326	99	94	86,6	cyclictest	3998006	-21	kworker/u4:5+events_unbound	21:51:08	0
3935326	99	93	77,13	cyclictest	3989644	-21	kworker/u4:4+events_unbound	21:56:54	0
3935326	99	92	84,6	cyclictest	3937928	-21	kworker/u4:13+events_unbound	19:55:48	0
3935327	99	91	83,5	cyclictest	4097704	-21	kworker/u4:7+events_unbound	00:08:43	1
3935327	99	91	72,7	cyclictest	3993244	-21	kworker/u4:11+events_unbound	22:26:14	1
3935327	99	91	72,7	cyclictest	3953569	-21	kworker/u4:11+events_unbound	21:16:43	1
3935327	99	91	72,7	cyclictest	3953569	-21	kworker/u4:11+events_unbound	21:16:43	1
3935327	99	88	72,5	cyclictest	3963887	-21	kworker/u4:20+events_unbound	21:41:06	1
3935327	99	87	72,4	cyclictest	3993244	-21	kworker/u4:11+events_unbound	21:46:07	1
3935326	99	86	80,4	cyclictest	3952197	-21	kworker/u4:2+events_unbound	20:36:35	0
3935327	99	84	75,6	cyclictest	4082324	-21	kworker/u4:3+events_unbound	23:37:10	1
3935327	99	81	72,7	cyclictest	4097705	-21	kworker/u4:8+events_unbound	00:13:45	1
3935326	99	81	76,3	cyclictest	3957451	-21	kworker/u4:9+events_unbound	21:01:42	0
3935327	99	78	71,5	cyclictest	3947042	-21	kworker/u4:4+events_unbound	21:21:44	1
3935327	99	77	69,6	cyclictest	3985462	-21	kworker/u4:9+events_unbound	21:36:05	1
3935327	99	77	68,7	cyclictest	3957450	-21	kworker/u4:3+events_unbound	20:56:40	1
3935327	99	76	68,6	cyclictest	4029720	-21	kworker/u4:1+events_unbound	22:46:18	1
3935327	99	75	68,5	cyclictest	4048649	-21	kworker/u4:7+events_unbound	22:52:04	1
3935326	99	75	67,6	cyclictest	4029722	-21	kworker/u4:4+events_unbound	22:31:16	0
3935326	99	74	69,3	cyclictest	3910452	-21	kworker/u4:15+events_unbound	20:10:50	0
3935327	99	73	66,5	cyclictest	4037310	-21	kworker/u4:11+events_unbound	22:41:18	1
3935326	99	72	64,6	cyclictest	3941806	-21	kworker/u4:17+events_unbound	20:01:28	0
3935326	99	72	47,23	cyclictest	3988923	-21	systemd	21:36:05	0
3935326	99	70	65,3	cyclictest	19	1	rcuc/0	23:11:24	0
3935327	99	69	62,5	cyclictest	3910452	-21	kworker/u4:15+events_unbound	20:26:34	1
3935327	99	69	52,6	cyclictest	4093829	-21	kworker/u4:2+events_unbound	23:55:02	1
3935327	99	69	52,6	cyclictest	4093829	-21	kworker/u4:2+events_unbound	23:55:02	1
3935326	99	69	63,4	cyclictest	4063832	-21	kworker/u4:7+events_unbound	23:26:29	0
3935326	99	68	3,61	cyclictest	0	-21	swapper/0	22:00:30	0
3935326	99	67	51,10	cyclictest	0	-21	swapper/0	20:55:27	0
3935326	99	66	56,8	cyclictest	3947042	-21	kworker/u4:4+events_unbound	21:21:02	0
3935327	99	65	58,5	cyclictest	4097702	-21	kworker/u4:1+events_unbound	00:05:01	1
3935327	99	63	56,5	cyclictest	4048650	-21	kworker/u4:9+events_unbound	23:27:09	1
3935326	99	63	59,3	cyclictest	257	50	irq/23-42890000.ethernet	21:25:17	0
3935326	99	60	51,6	cyclictest	4121968	-21	kworker/u4:8+events_unbound	00:35:02	0
3935326	99	59	50,6	cyclictest	3953569	-21	kworker/u4:11+events_unbound	21:16:03	0
3935326	99	59	50,6	cyclictest	3953569	-21	kworker/u4:11+events_unbound	21:16:02	0
3935327	99	58	52,4	cyclictest	4063832	-21	kworker/u4:7+events_unbound	23:16:25	1
3935327	99	57	48,6	cyclictest	3947042	-21	kworker/u4:4-rpciod	21:11:41	1
3935327	99	57	48,6	cyclictest	3910452	-21	kworker/u4:15+events_unbound	20:20:53	1
3935327	99	57	43,5	cyclictest	4108358	-21	kworker/u4:10+events_unbound	00:23:10	1
3935326	99	57	50,6	cyclictest	3540542	-21	kworker/u4:12+events_unbound	19:10:02	0
3935326	99	57	48,6	cyclictest	4104044	-21	/usr/sbin/munin	00:05:37	0
3935327	99	56	49,5	cyclictest	4013935	-21	kworker/u4:1+events_unbound	22:10:13	1
3935326	99	56	31,19	cyclictest	257	50	irq/23-42890000.ethernet	21:05:10	0
3935326	99	56	31,19	cyclictest	257	50	irq/23-42890000.ethernet	21:05:09	0
3935327	99	55	48,5	cyclictest	3935324	-21	cyclictest	19:55:46	1
3935327	99	55	47,6	cyclictest	3954886	-21	kworker/u4:12+events_unbound	20:40:55	1
3935326	99	55	48,5	cyclictest	4037309	-21	kworker/u4:10+events_unbound	22:40:04	0
3935326	99	55	46,7	cyclictest	4065881	-21	fschecks_time	23:15:20	0
3935327	99	54	45,6	cyclictest	4121968	-21	kworker/u4:8+events_unbound	00:33:22	1
3935327	99	54	41,5	cyclictest	3952201	-21	kworker/u4:7+events_unbound	20:30:53	1
3935326	99	54	46,6	cyclictest	4013935	-21	kworker/u4:1+events_unbound	22:10:01	0
3935327	99	53	37,7	cyclictest	4009844	-21	kworker/u4:3+events_unbound	22:06:12	1
3935327	99	52	42,8	cyclictest	4096180	-21	kernelversion	23:55:25	1
3935327	99	52	40,9	cyclictest	4048650	-21	kworker/u4:9-rpciod	23:40:34	1
3935326	99	52	42,7	cyclictest	0	-21	swapper/0	22:17:00	0
3935327	99	51	44,5	cyclictest	4000030	-21	fschecks_count	21:50:18	1
3935327	99	51	43,6	cyclictest	4044762	-21	kworker/u4:2+events_unbound	23:12:08	1
3935326	99	51	33,16	cyclictest	4080755	-21	ssh	23:35:21	0
3935327	99	50	44,4	cyclictest	4033457	-21	kworker/u4:7+events_unbound	22:35:03	1
3935327	99	50	40,7	cyclictest	3941806	-21	kworker/u4:17+events_unbound	19:55:01	1
3935327	99	50	38,9	cyclictest	3981264	-21	ssh	21:27:05	1
3935327	99	50	26,14	cyclictest	4054273	-21	ssh	23:00:10	1
3935326	99	50	38,10	cyclictest	4119167	-21	kworker/u4:7+events_unbound	00:27:33	0
3935327	99	49	40,6	cyclictest	0	-21	swapper/1	19:15:40	1
3935327	99	48	41,5	cyclictest	4025957	-21	kworker/u4:0+events_unbound	22:25:01	1
3935327	99	48	41,5	cyclictest	4025957	-21	kworker/u4:0+events_unbound	22:25:01	1
3935326	99	48	41,5	cyclictest	53	-21	kswapd0	23:50:11	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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