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 Nov 29, 2025 12:44:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3911988	99	141	114,9	cyclictest	4039977	-21	kworker/u4:4+events_unbound	11:35:39	0
3911988	99	141	114,9	cyclictest	4039977	-21	kworker/u4:4+events_unbound	11:35:39	0
3911988	99	126	115,7	cyclictest	3930070	-21	kworker/u4:0+events_unbound	08:39:58	0
3911988	99	125	118,5	cyclictest	3922346	-21	kworker/u4:12+events_unbound	08:45:31	0
3911988	99	123	116,5	cyclictest	3962504	-21	kworker/u4:17+events_unbound	09:40:10	0
3911991	99	119	107,9	cyclictest	3914593	-21	kworker/u4:11+events_unbound	08:15:26	1
3911988	99	115	96,6	cyclictest	3997858	-21	kworker/u4:7+events_unbound	10:30:51	0
3911988	99	110	102,5	cyclictest	4076972	-21	kworker/u4:1+events_unbound	12:21:03	0
3911988	99	109	102,5	cyclictest	3972948	-21	kworker/u4:11+events_unbound	10:20:21	0
3911988	99	108	100,6	cyclictest	4072885	-21	kworker/u4:4+events_unbound	12:15:49	0
3911988	99	106	98,5	cyclictest	3976651	-21	kworker/u4:6+events_unbound	10:15:48	0
3911988	99	105	96,7	cyclictest	3940393	-21	kworker/u4:10+events_unbound	09:15:38	0
3911991	99	103	90,9	cyclictest	3940389	-21	kworker/u4:1+events_unbound	09:15:05	1
3911991	99	100	84,7	cyclictest	3923627	-21	kworker/u4:15+events_unbound	08:25:25	1
3911991	99	97	86,8	cyclictest	3919752	-21	kworker/u4:4+events_unbound	08:35:29	1
3911991	99	95	87,6	cyclictest	3940389	-21	kworker/u4:1+events_unbound	09:45:42	1
3911991	99	94	87,5	cyclictest	3969447	-21	kworker/u4:3+events_unbound	10:45:29	1
3911988	99	94	86,6	cyclictest	4025961	-21	kworker/u4:12+events_unbound	11:56:02	0
3911988	99	94	86,6	cyclictest	3930070	-21	kworker/u4:0+events_unbound	08:29:55	0
3911988	99	93	85,6	cyclictest	4061874	-21	kworker/u4:3+events_unbound	12:06:01	0
3911988	99	92	84,6	cyclictest	4004883	-21	kworker/u4:11+events_unbound	11:25:37	0
3911991	99	91	42,46	cyclictest	0	-21	swapper/1	11:35:14	1
3911991	99	91	42,46	cyclictest	0	-21	swapper/1	11:35:13	1
3911991	99	90	81,7	cyclictest	3922346	-21	kworker/u4:12+events_unbound	08:55:01	1
3911991	99	88	80,6	cyclictest	4047228	-21	kworker/u4:5+events_unbound	12:00:45	1
3911991	99	88	78,6	cyclictest	3949042	-21	kworker/u4:2+events_unbound	09:30:09	1
3911991	99	87	77,6	cyclictest	3910693	-21	kworker/u4:1+events_unbound	07:35:05	1
3911988	99	87	78,7	cyclictest	3939106	-21	kworker/u4:9+events_unbound	09:05:35	0
3911988	99	86	77,6	cyclictest	4039981	-21	kworker/u4:10+events_unbound	11:30:59	0
3911991	99	85	76,6	cyclictest	3940394	-21	kworker/u4:11+events_unbound	09:35:08	1
3911988	99	85	77,6	cyclictest	4039977	-21	kworker/u4:4+events_unbound	11:50:43	0
3911991	99	84	74,6	cyclictest	3919751	-21	kworker/u4:2+events_unbound	07:50:13	1
3911991	99	83	48,32	cyclictest	3937482	-21	sendmail_mailqu	08:45:39	1
3911991	99	83	25,16	cyclictest	0	-21	swapper/1	10:55:27	1
3911988	99	83	64,16	cyclictest	53	-21	kswapd0	11:40:13	0
3911991	99	82	74,6	cyclictest	3923627	-21	kworker/u4:15+events_unbound	07:59:48	1
3911988	99	82	75,5	cyclictest	3914592	-21	kworker/u4:10+events_unbound	07:20:01	0
3911991	99	81	65,5	cyclictest	3939104	-21	kworker/u4:6+events_unbound	09:00:02	1
3911988	99	81	74,5	cyclictest	4004882	-21	kworker/u4:10+events_unbound	11:05:32	0
3911988	99	80	71,7	cyclictest	4043568	-21	kworker/u4:16+events_unbound	12:35:50	0
3911991	99	79	71,6	cyclictest	3902948	-21	kworker/u4:5+events_unbound	07:29:37	1
3911991	99	78	67,8	cyclictest	3969447	-21	kworker/u4:3+events_unbound	09:55:43	1
3911991	99	78	6,30	cyclictest	1060	-21	snmpd	11:40:08	1
3911991	99	77	36,5	cyclictest	3989184	-21	df_abs	10:15:21	1
3911988	99	77	70,5	cyclictest	3919751	-21	kworker/u4:2+events_unbound	07:44:45	0
3911991	99	76	69,5	cyclictest	3969452	-21	kworker/u4:9+events_unbound	09:50:42	1
3911991	99	74	66,6	cyclictest	3939104	-21	kworker/u4:6+events_unbound	09:25:38	1
3911991	99	73	65,6	cyclictest	3926215	-21	kworker/u4:5+events_unbound	08:05:20	1
3911991	99	73	38,33	cyclictest	3982192	-21	gltestperf	10:05:23	1
3911988	99	73	68,3	cyclictest	4043568	-21	kworker/u4:16+events_unbound	11:45:41	0
3911988	99	73	63,8	cyclictest	3940391	-21	kworker/u4:4+events_unbound	09:10:06	0
3911991	99	72	30,6	cyclictest	0	-21	swapper/1	11:20:17	1
3911988	99	71	63,6	cyclictest	3915900	-21	kworker/u4:14+events_unbound	07:24:30	0
3911991	99	69	62,5	cyclictest	4072884	-21	kworker/u4:2+events_unbound	12:15:01	1
3911991	99	69	60,7	cyclictest	4008600	-21	kworker/u4:7+events_unbound	11:00:30	1
3911991	99	69	51,7	cyclictest	3983913	-21	kworker/u4:4+events_unbound	10:25:49	1
3911991	99	69	32,7	cyclictest	0	-21	swapper/1	11:25:21	1
3911988	99	69	54,12	cyclictest	53	-21	kswapd0	10:00:34	0
3911991	99	68	59,7	cyclictest	3922346	-21	kworker/u4:12+events_unbound	07:49:46	1
3911988	99	68	60,6	cyclictest	3923627	-21	kworker/u4:15+events_unbound	08:20:25	0
3911991	99	67	60,5	cyclictest	3949042	-21	kworker/u4:2+events_unbound	09:20:07	1
3911991	99	67	37,4	cyclictest	4055708	-21	cut	11:50:15	1
3911991	99	66	55,8	cyclictest	4039976	-21	kworker/u4:3+events_unbound	11:30:39	1
3911988	99	66	59,5	cyclictest	3969452	-21	kworker/u4:9+events_unbound	09:50:09	0
3911991	99	65	36,5	cyclictest	0	-21	swapper/1	10:10:18	1
3911988	99	65	54,7	cyclictest	3962504	-21	kworker/u4:17+events_unbound	09:40:01	0
3911991	99	64	3,23	cyclictest	4079552	-21	ntpq	12:20:31	1
3911991	99	63	55,6	cyclictest	4031040	-21	/usr/sbin/munin	11:15:34	1
3911991	99	63	55,6	cyclictest	3931379	-21	kworker/u4:3+events_unbound	08:24:54	1
3911988	99	63	56,5	cyclictest	4015741	-21	kworker/u4:4+events_unbound	10:55:55	0
3911991	99	61	54,5	cyclictest	3969451	-21	kworker/u4:8+events_unbound	10:00:45	1
3911988	99	61	5,47	cyclictest	4014399	-21	ssh	10:50:30	0
3911988	99	60	53,5	cyclictest	3997857	-21	kworker/u4:6+events_unbound	10:35:02	0
3911988	99	60	36,20	cyclictest	53	-21	kswapd0	10:10:07	0
3911991	99	59	51,6	cyclictest	3910693	-21	kworker/u4:1+events_unbound	07:40:04	1
3911988	99	59	52,5	cyclictest	3926214	-21	kworker/u4:3+events_unbound	08:04:50	0
3911988	99	59	51,6	cyclictest	4064797	-21	ssh	12:00:44	0
3911988	99	59	50,7	cyclictest	4008598	-21	kworker/u4:5+events_unbound	10:45:52	0
3911991	99	58	49,7	cyclictest	379	-21	dbus-daemon	10:35:24	1
3911991	99	58	48,8	cyclictest	3940389	-21	kworker/u4:1+events_unbound	09:00:35	1
3911988	99	58	50,6	cyclictest	3919754	-21	kworker/u4:6+events_unbound	08:34:59	0
3911988	99	57	49,6	cyclictest	3919752	-21	kworker/u4:4+events_unbound	08:19:54	0
3911988	99	55	47,6	cyclictest	3980320	-21	kworker/u4:12+events_unbound	10:05:02	0
3911991	99	54	46,5	cyclictest	3919754	-21	kworker/u4:6+events_unbound	08:10:20	1
3911988	99	54	47,5	cyclictest	4006947	-21	fschecks_time	10:40:21	0
3911991	99	53	45,6	cyclictest	4007840	-21	/usr/sbin/munin	10:40:41	1
3911991	99	53	2,35	cyclictest	4075644	-21	ssh	12:15:33	1
3911988	99	53	32,18	cyclictest	3958966	-21	kworker/u4:13+events_unbound	09:35:02	0
3911988	99	52	45,5	cyclictest	3940389	-21	kworker/u4:1+events_unbound	09:45:04	0
3911988	99	52	45,5	cyclictest	3922344	-21	kworker/u4:7+events_unbound	08:09:49	0
3911988	99	52	45,5	cyclictest	3919751	-21	kworker/u4:2+events_unbound	07:39:44	0
3911988	99	52	42,7	cyclictest	4034564	-21	aten2__	11:20:15	0
3911991	99	51	7,37	cyclictest	4083446	-21	sh	12:25:32	1
3911991	99	51	43,6	cyclictest	4004882	-21	kworker/u4:10+events_unbound	10:50:54	1
3911988	99	51	44,5	cyclictest	3919751	-21	kworker/u4:2+events_unbound	07:45:09	0
3911988	99	51	44,5	cyclictest	3915900	-21	kworker/u4:14+events_unbound	07:25:03	0
3911988	99	51	44,5	cyclictest	3914593	-21	kworker/u4:11+events_unbound	08:14:51	0
3911988	99	51	43,6	cyclictest	3910693	-21	kworker/u4:1+events_unbound	07:30:04	0
3911988	99	51	41,7	cyclictest	3974569	-21	munin-node	09:55:14	0
3911988	99	51	39,10	cyclictest	3996585	-21	load	10:25:25	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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