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 Thu Aug 20, 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
3975750	99	121	112,7	cyclictest	3976979	-21	kworker/u4:7+events_unbound	07:35:15	1
3975750	99	119	108,8	cyclictest	3976975	-21	kworker/u4:0+events_unbound	07:20:10	1
3975750	99	114	92,7	cyclictest	4102942	-21	kworker/u4:1+events_unbound	11:46:06	1
3975750	99	98	91,5	cyclictest	4031905	-21	kworker/u4:11+events_unbound	09:45:44	1
3975750	99	93	86,5	cyclictest	4054020	-21	kworker/u4:12+events_unbound	10:05:48	1
3975750	99	92	85,5	cyclictest	4121038	-21	kworker/u4:2+events_unbound	11:21:01	1
3975750	99	92	85,5	cyclictest	4121038	-21	kworker/u4:2+events_unbound	11:21:01	1
3975750	99	92	81,8	cyclictest	4027330	-21	kworker/u4:4+events_unbound	09:35:41	1
3975749	99	92	84,5	cyclictest	19	1	rcuc/0	10:30:52	0
3975749	99	92	66,23	cyclictest	53	-21	kswapd0	09:55:07	0
3975750	99	90	82,6	cyclictest	3996241	-21	kworker/u4:12+events_unbound	08:50:39	1
3975750	99	89	81,6	cyclictest	3994972	-21	kworker/u4:11+events_unbound	08:30:27	1
3975750	99	89	76,6	cyclictest	4018181	-21	kworker/u4:2+events_unbound	09:50:45	1
3975750	99	88	80,6	cyclictest	3976978	-21	kworker/u4:6+events_unbound	07:25:10	1
3975750	99	87	80,5	cyclictest	4102942	-21	kworker/u4:1+events_unbound	11:06:00	1
3975750	99	86	55,27	cyclictest	53	-21	kswapd0	09:55:11	1
3975749	99	85	76,7	cyclictest	4183269	-21	kworker/u4:15+events_unbound	12:31:13	0
3975750	99	84	76,6	cyclictest	4040413	-21	kworker/u4:8+events_unbound	10:10:49	1
3975750	99	83	78,4	cyclictest	4174173	-21	kworker/u4:0+events_unbound	12:21:10	1
3975749	99	81	10,59	cyclictest	37	-21	kcompactd0	08:05:06	0
3975750	99	78	70,6	cyclictest	3976977	-21	kworker/u4:4+events_unbound	09:00:38	1
3975749	99	78	10,13	cyclictest	4106054	-21	ntpq	11:00:41	0
3975750	99	75	68,5	cyclictest	3976979	-21	kworker/u4:7+events_unbound	08:10:22	1
3975749	99	74	39,32	cyclictest	317	-21	systemd-journal	07:50:18	0
3975749	99	74	39,32	cyclictest	317	-21	systemd-journal	07:50:17	0
3975749	99	74	39,31	cyclictest	0	-21	swapper/0	08:25:00	0
3975749	99	73	2,63	cyclictest	4002656	-21	apt-get	08:55:09	0
3975749	99	72	35,34	cyclictest	0	-21	swapper/0	11:10:40	0
3975750	99	71	40,19	cyclictest	4087432	-21	ssh	10:40:11	1
3975749	99	70	58,5	cyclictest	4187740	-21	kworker/u4:0+events_unbound	12:36:14	0
3975749	99	70	35,32	cyclictest	3998565	-21	timerandwakeup	08:35:38	0
3975749	99	69	35,30	cyclictest	4143117	-21	kworker/u4:9-rpciod	11:50:36	0
3975749	99	69	31,35	cyclictest	3995269	-21	aten_r7power_po	08:25:15	0
3975749	99	69	30,37	cyclictest	4035014	-21	mailstats	09:40:38	0
3975750	99	68	61,5	cyclictest	4143117	-21	kworker/u4:9+events_unbound	12:06:10	1
3975750	99	68	61,5	cyclictest	4143117	-21	kworker/u4:9+events_unbound	12:06:10	1
3975750	99	68	59,6	cyclictest	4178750	-21	kworker/u4:2+events_unbound	12:25:09	1
3975749	99	68	52,14	cyclictest	0	-21	swapper/0	10:35:16	0
3975749	99	68	3,12	cyclictest	4012395	-21	ssh	09:15:37	0
3975749	99	68	20,5	cyclictest	0	-21	swapper/0	09:20:38	0
3975750	99	67	60,5	cyclictest	4001345	-21	kworker/u4:9+events_unbound	09:05:40	1
3975749	99	67	34,29	cyclictest	0	-21	swapper/0	11:40:41	0
3975749	99	67	2,21	cyclictest	4159207	-21	grep	12:00:20	0
3975749	99	66	36,26	cyclictest	0	-21	swapper/0	07:20:36	0
3975749	99	66	30,33	cyclictest	0	-21	swapper/0	11:25:29	0
3975749	99	66	28,35	cyclictest	256	50	irq/23-42890000.ethernet	11:15:34	0
3975750	99	65	2,46	cyclictest	4159555	-21	ssh	12:00:31	1
3975749	99	65	34,29	cyclictest	4180808	-21	apt-get	12:25:00	0
3975749	99	65	30,32	cyclictest	3983883	-21	fschecks_time	07:40:19	0
3975749	99	65	30,32	cyclictest	3976921	-21	unixbench_singl	07:10:36	0
3975749	99	65	28,33	cyclictest	0	-21	swapper/0	10:25:34	0
3975749	99	65	2,13	cyclictest	4039318	-21	ntpq	09:45:31	0
3975749	99	64	37,25	cyclictest	4025023	-21	/usr/sbin/munin	09:30:15	0
3975749	99	64	34,27	cyclictest	4018182	-21	kworker/u4:4-rpciod	09:25:35	0
3975749	99	64	29,31	cyclictest	0	-21	swapper/0	11:20:34	0
3975749	99	64	29,31	cyclictest	0	-21	swapper/0	11:20:34	0
3975749	99	64	2,27	cyclictest	4181841	-21	/usr/sbin/munin	12:25:31	0
3975749	99	64	20,5	cyclictest	0	-21	swapper/0	07:30:00	0
3975749	99	64	19,12	cyclictest	4030612	-21	sed	09:35:40	0
3975750	99	63	46,7	cyclictest	4085556	-21	kworker/u4:9+events_unbound	10:47:45	1
3975749	99	63	4,16	cyclictest	4155252	-21	mailstats	11:55:36	0
3975749	99	63	33,27	cyclictest	0	-21	swapper/0	11:30:25	0
3975749	99	63	32,28	cyclictest	4088597	-21	awk	10:40:43	0
3975749	99	63	29,32	cyclictest	4056447	-21	aten_r7power_cu	10:05:17	0
3975749	99	63	29,30	cyclictest	0	-21	swapper/0	11:05:41	0
3975749	99	63	27,33	cyclictest	0	-21	swapper/0	08:15:29	0
3975749	99	63	26,33	cyclictest	0	-21	swapper/0	09:50:32	0
3975749	99	63	23,36	cyclictest	0	-21	swapper/0	08:00:15	0
3975749	99	63	18,6	cyclictest	4092256	-21	fschecks_time	10:45:19	0
3975749	99	63	1,10	cyclictest	3978323	-21	awk	07:20:01	0
3975749	99	62	7,14	cyclictest	4164115	-21	ntpq	12:05:37	0
3975749	99	62	7,14	cyclictest	4164115	-21	ntpq	12:05:37	0
3975749	99	62	2,18	cyclictest	4070400	-21	ntpq	10:20:28	0
3975749	99	61	31,28	cyclictest	4168986	-21	grep	12:10:40	0
3975749	99	61	31,27	cyclictest	4102942	-21	kworker/u4:1-xprtiod	11:35:19	0
3975749	99	61	28,30	cyclictest	0	-21	swapper/0	10:55:19	0
3975749	99	61	24,34	cyclictest	0	-21	swapper/0	08:45:36	0
3975749	99	60	26,31	cyclictest	4036500	-21	kworker/u4:5-rpciod	10:10:37	0
3975749	99	60	26,31	cyclictest	0	-21	swapper/0	09:10:32	0
3975749	99	60	26,31	cyclictest	0	-21	swapper/0	09:10:32	0
3975749	99	60	25,5	cyclictest	0	-21	swapper/0	08:10:17	0
3975749	99	60	25,32	cyclictest	3996788	-21	gltestperf	08:30:20	0
3975749	99	60	23,34	cyclictest	3993661	-21	kworker/u4:1-rpciod	08:50:22	0
3975749	99	59	26,29	cyclictest	256	50	irq/23-42890000.ethernet	12:15:31	0
3975749	99	59	24,7	cyclictest	4052401	-21	head	10:00:21	0
3975749	99	59	24,3	cyclictest	0	-21	swapper/0	10:15:28	0
3975749	99	59	23,6	cyclictest	3981639	-21	ntp_offset	07:30:28	0
3975749	99	59	1,14	cyclictest	4146235	-21	ntpq	11:45:36	0
3975749	99	58	24,31	cyclictest	0	-21	swapper/0	10:50:23	0
3975749	99	58	24,31	cyclictest	0	-21	swapper/0	10:50:23	0
3975750	99	57	51,5	cyclictest	4102942	-21	kworker/u4:1+events_unbound	11:40:02	1
3975750	99	57	49,6	cyclictest	3988469	-21	kworker/u4:6+events_unbound	08:00:00	1
3975750	99	56	50,5	cyclictest	4089429	-21	kworker/u4:10+events_unbound	11:05:01	1
3975750	99	56	49,5	cyclictest	3985099	-21	fschecks_count	07:45:18	1
3975750	99	56	39,7	cyclictest	4192274	-21	kworker/u4:7+events_unbound	12:39:46	1
3975749	99	56	20,6	cyclictest	0	-21	swapper/0	08:45:01	0
3975750	99	54	48,4	cyclictest	4076539	-21	kworker/u4:11+events_unbound	10:30:01	1
3975750	99	54	36,6	cyclictest	4152133	-21	kworker/u4:11+events_unbound	11:57:44	1
3975749	99	54	21,5	cyclictest	3976977	-21	kworker/u4:4-xprtiod	09:00:19	0
3975750	99	53	44,5	cyclictest	0	-21	swapper/1	09:15:28	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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