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 Jun 13, 2026 12:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3843464	99	102	86,7	cyclictest	4020695	-21	kworker/u4:5+events_unbound	12:01:06	0
3843464	99	101	83,6	cyclictest	3912131	-21	kworker/u4:1+events_unbound	09:55:46	0
3843464	99	99	91,6	cyclictest	3916542	-21	kworker/u4:10+events_unbound	10:15:47	0
3843464	99	96	89,5	cyclictest	3898826	-21	kworker/u4:3+events_unbound	09:40:43	0
3843464	99	96	80,6	cyclictest	3933554	-21	kworker/u4:6+events_unbound	10:35:00	0
3843464	99	95	88,5	cyclictest	3981663	-21	kworker/u4:9+events_unbound	12:11:07	0
3843464	99	92	83,7	cyclictest	4029532	-21	kworker/u4:10+events_unbound	12:21:09	0
3843464	99	91	83,6	cyclictest	3946866	-21	kworker/u4:4+events_unbound	10:45:52	0
3843464	99	90	82,6	cyclictest	3840961	-21	kworker/u4:4+events_unbound	08:50:34	0
3843464	99	88	80,6	cyclictest	3972813	-21	kworker/u4:3+events_unbound	11:10:58	0
3843464	99	85	73,5	cyclictest	3977240	-21	kworker/u4:0+events_unbound	11:16:00	0
3843464	99	81	74,5	cyclictest	3946869	-21	kworker/u4:8+events_unbound	10:55:56	0
3843465	99	80	70,6	cyclictest	0	-21	swapper/1	12:20:16	1
3843464	99	79	72,5	cyclictest	3933555	-21	kworker/u4:8+events_unbound	10:25:48	0
3843464	99	77	47,15	cyclictest	256	50	irq/23-42890000.ethernet	09:15:10	0
3843464	99	77	47,15	cyclictest	256	50	irq/23-42890000.ethernet	09:15:09	0
3843464	99	73	65,6	cyclictest	3844692	-21	kworker/u4:7+events_unbound	07:30:08	0
3843464	99	71	63,6	cyclictest	3999277	-21	kworker/u4:5+events_unbound	11:51:06	0
3843464	99	69	62,5	cyclictest	4046573	-21	kworker/u4:14+events_unbound	12:30:00	0
3843464	99	69	61,6	cyclictest	4029535	-21	kworker/u4:13+events_unbound	12:31:11	0
3843464	99	69	61,6	cyclictest	4029535	-21	kworker/u4:13+events_unbound	12:31:10	0
3843464	99	68	59,7	cyclictest	4001462	-21	fschecks_count	11:35:20	0
3843465	99	67	27,15	cyclictest	4001866	-21	ntpq	11:35:29	1
3843464	99	67	59,6	cyclictest	3920303	-21	kworker/u4:11+events_unbound	10:10:47	0
3843464	99	66	53,6	cyclictest	4033971	-21	kworker/u4:2+events_unbound	12:17:01	0
3843465	99	65	56,6	cyclictest	53	-21	kswapd0	10:20:01	1
3843464	99	65	55,5	cyclictest	3827917	-21	kworker/u4:14+events_unbound	08:05:02	0
3843465	99	64	54,7	cyclictest	4055360	-21	kworker/u4:4+events_unbound	12:40:01	1
3843464	99	64	57,5	cyclictest	53	-21	kswapd0	12:10:01	0
3843464	99	64	57,5	cyclictest	3840961	-21	kworker/u4:4+events_unbound	08:30:30	0
3843464	99	64	53,5	cyclictest	3946865	-21	kworker/u4:3+events_unbound	10:35:51	0
3843464	99	64	47,7	cyclictest	3972814	-21	kworker/u4:4+events_unbound	11:23:59	0
3843465	99	63	26,13	cyclictest	4026994	-21	sed	12:05:01	1
3843465	99	63	26,11	cyclictest	3868156	-21	apt-get	08:45:14	1
3843464	99	63	51,5	cyclictest	3999277	-21	kworker/u4:5+events_unbound	11:40:12	0
3843464	99	63	44,11	cyclictest	3852455	-21	kworker/u4:5+xprtiod	07:50:10	0
3843465	99	62	4,47	cyclictest	4010522	-21	ssh	11:45:26	1
3843465	99	62	22,15	cyclictest	3886658	-21	ssh	09:23:29	1
3843464	99	62	56,4	cyclictest	3840961	-21	kworker/u4:4+events_unbound	07:25:00	0
3843464	99	62	55,5	cyclictest	3981663	-21	kworker/u4:9+events_unbound	11:56:06	0
3843464	99	62	55,5	cyclictest	3827917	-21	kworker/u4:14+events_unbound	07:35:02	0
3843464	99	62	52,8	cyclictest	3972814	-21	kworker/u4:4+events_unbound	11:30:00	0
3843464	99	62	48,11	cyclictest	0	-21	swapper/0	09:25:15	0
3843465	99	61	25,14	cyclictest	3879101	-21	ssh	09:15:03	1
3843465	99	61	25,14	cyclictest	3879101	-21	ssh	09:15:03	1
3843465	99	61	20,15	cyclictest	4009044	-21	ssh	11:44:15	1
3843465	99	61	19,16	cyclictest	3930703	-21	ssh	10:14:11	1
3843465	99	60	24,8	cyclictest	3877638	-21	ssh	09:13:09	1
3843465	99	60	21,11	cyclictest	4051223	-21	ssh	12:32:13	1
3843465	99	60	21,11	cyclictest	4051223	-21	ssh	12:32:13	1
3843465	99	60	20,15	cyclictest	4047177	-21	ssh	12:27:43	1
3843465	99	60	19,12	cyclictest	3955850	-21	ssh	10:42:37	1
3843465	99	59	22,14	cyclictest	3912349	-21	ssh	09:52:37	1
3843465	99	59	22,11	cyclictest	3899626	-21	ssh	09:38:14	1
3843465	99	59	22,10	cyclictest	3905344	-21	ssh	09:45:05	1
3843465	99	59	21,14	cyclictest	3994930	-21	ssh	11:27:28	1
3843465	99	59	21,14	cyclictest	3918016	-21	ssh	09:59:47	1
3843465	99	59	21,13	cyclictest	4038663	-21	ssh	12:18:01	1
3843465	99	59	20,13	cyclictest	3937495	-21	ssh	10:21:07	1
3843465	99	59	20,13	cyclictest	3937495	-21	ssh	10:21:07	1
3843465	99	59	19,15	cyclictest	3895909	-21	ssh	09:34:19	1
3843465	99	59	19,15	cyclictest	3845504	-21	ntpq	07:15:31	1
3843465	99	59	19,14	cyclictest	3989739	-21	ssh	11:21:05	1
3843465	99	59	19,12	cyclictest	4000413	-21	ssh	11:34:21	1
3843465	99	59	18,15	cyclictest	3848045	-21	ntpq	07:25:26	1
3843464	99	59	51,6	cyclictest	3898827	-21	kworker/u4:4+events_unbound	10:05:47	0
3843464	99	59	40,6	cyclictest	3946869	-21	kworker/u4:8+events_unbound	10:53:57	0
3843465	99	58	49,7	cyclictest	3964596	-21	kworker/u4:5+events_unbound	11:15:15	1
3843465	99	58	22,10	cyclictest	3857162	-21	ntpq	08:00:30	1
3843465	99	58	20,13	cyclictest	3974101	-21	ssh	11:03:54	1
3843465	99	58	20,13	cyclictest	3974101	-21	ssh	11:03:53	1
3843465	99	58	20,13	cyclictest	3964883	-21	ssh	10:53:06	1
3843465	99	58	20,11	cyclictest	3978860	-21	ssh	11:09:35	1
3843465	99	58	20,11	cyclictest	3902434	-21	ssh	09:40:44	1
3843465	99	58	19,15	cyclictest	3925107	-21	ssh	10:07:09	1
3843465	99	58	18,14	cyclictest	3961044	-21	ssh	10:48:57	1
3843464	99	58	8,38	cyclictest	3874373	-21	diskmemload	12:35:24	0
3843465	99	57	48,6	cyclictest	4032265	-21	/usr/sbin/munin	12:10:29	1
3843465	99	57	22,10	cyclictest	3951041	-21	ssh	10:36:52	1
3843465	99	57	21,10	cyclictest	3920783	-21	ssh	10:02:13	1
3843465	99	57	20,13	cyclictest	4021974	-21	ssh	11:59:08	1
3843465	99	57	20,13	cyclictest	3861031	-21	ntpq	08:15:33	1
3843465	99	57	20,13	cyclictest	3861031	-21	ntpq	08:15:32	1
3843465	99	57	20,10	cyclictest	3941464	-21	ssh	10:25:42	1
3843465	99	57	19,15	cyclictest	3945429	-21	ntpq	10:30:32	1
3843465	99	57	19,11	cyclictest	3980945	-21	ssh	11:10:58	1
3843465	99	57	17,12	cyclictest	3968455	-21	ssh	10:56:51	1
3843464	99	57	50,5	cyclictest	3946869	-21	kworker/u4:8+events_unbound	10:40:03	0
3843464	99	57	46,8	cyclictest	3840961	-21	kworker/u4:4-rpciod	08:40:01	0
3843465	99	56	47,7	cyclictest	4025132	-21	kworker/u4:1+events_unbound	12:06:07	1
3843465	99	56	34,17	cyclictest	3888764	-21	ssh	09:25:33	1
3843465	99	56	21,10	cyclictest	3858399	-21	ntpq	08:05:25	1
3843465	99	56	19,13	cyclictest	4015525	-21	ssh	11:50:42	1
3843464	99	56	47,6	cyclictest	0	-21	swapper/0	09:20:32	0
3843465	99	55	45,8	cyclictest	3843398	-21	kworker/u4:5+events_unbound	07:10:01	1
3843465	99	55	42,8	cyclictest	3847277	-21	modprobe	07:25:00	1
3843464	99	55	48,5	cyclictest	3870505	-21	kworker/u4:16+events_unbound	09:00:38	0
3843465	99	53	44,6	cyclictest	3832161	-21	kworker/u4:1+events_unbound	08:25:29	1
3843465	99	53	19,12	cyclictest	3850086	-21	apt	07:35:14	1
3843464	99	53	45,6	cyclictest	53	-21	kswapd0	10:05:01	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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