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 376 highest latencies:

System rack7slot2.osadl.org (updated Mon Jun 29, 2026 00:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
4156273	99	128	107,12	cyclictest	22815	-21	kworker/u4:11+events_unbound	22:03:03	0
4156273	99	112	105,5	cyclictest	76371	-21	kworker/u4:12+events_unbound	23:08:16	0
4156274	99	109	102,5	cyclictest	58300	-21	kworker/u4:5+events_unbound	22:33:08	1
4156274	99	109	101,6	cyclictest	18328	-21	kworker/u4:2+events_unbound	21:48:00	1
4156273	99	107	101,5	cyclictest	71830	-21	kworker/u4:6+events_unbound	22:48:12	0
4156274	99	106	99,5	cyclictest	4157494	-21	kworker/u4:5+events_unbound	19:27:33	1
4156273	99	103	87,7	cyclictest	4180608	-21	kworker/u4:2+events_unbound	21:17:54	0
4156274	99	102	95,5	cyclictest	133779	-21	kworker/u4:6+events_unbound	23:57:25	1
4156274	99	102	89,6	cyclictest	4176772	-21	kworker/u4:6+events_unbound	20:32:44	1
4156274	99	99	91,6	cyclictest	4157494	-21	kworker/u4:5+events_unbound	19:12:31	1
4156274	99	99	86,5	cyclictest	4154986	-21	kworker/u4:3+events_unbound	19:52:39	1
4156274	99	99	86,5	cyclictest	4154986	-21	kworker/u4:3+events_unbound	19:52:39	1
4156273	99	99	78,9	cyclictest	151826	-21	kworker/u4:17+events_unbound	00:10:00	0
4156274	99	98	90,6	cyclictest	4156200	-21	kworker/u4:9+events_unbound	19:47:36	1
4156274	99	97	89,6	cyclictest	4697	-21	kworker/u4:0+events_unbound	21:32:57	1
4156274	99	97	89,6	cyclictest	4697	-21	kworker/u4:0+events_unbound	21:32:56	1
4156274	99	97	84,5	cyclictest	4170395	-21	kworker/u4:13+events_unbound	20:17:43	1
4156274	99	96	88,6	cyclictest	4154986	-21	kworker/u4:3+events_unbound	20:37:46	1
4156273	99	95	88,5	cyclictest	4185728	-21	kworker/u4:16+events_unbound	21:12:52	0
4156273	99	94	85,7	cyclictest	4181886	-21	kworker/u4:9+events_unbound	21:22:55	0
4156274	99	93	85,6	cyclictest	4154986	-21	kworker/u4:3+events_unbound	21:02:51	1
4156273	99	93	75,7	cyclictest	4176772	-21	kworker/u4:6+events_unbound	20:42:46	0
4156274	99	91	84,5	cyclictest	4161348	-21	kworker/u4:14+events_unbound	19:32:33	1
4156273	99	91	83,6	cyclictest	142780	-21	kworker/u4:9+events_unbound	00:38:41	0
4156274	99	90	77,5	cyclictest	4161349	-21	kworker/u4:15+events_unbound	20:22:44	1
4156273	99	87	79,6	cyclictest	4158769	-21	kworker/u4:8+events_unbound	19:22:33	0
4156274	99	86	79,5	cyclictest	4167726	-21	kworker/u4:6+events_unbound	19:57:37	1
4156274	99	82	74,6	cyclictest	4154986	-21	kworker/u4:3+events_unbound	21:07:52	1
4156273	99	81	75,4	cyclictest	31189	-21	kworker/u4:5+events_unbound	21:58:01	0
4156273	99	75	67,6	cyclictest	133778	-21	kworker/u4:4+events_unbound	00:13:33	0
4156273	99	75	62,6	cyclictest	4163889	-21	kworker/u4:2+events_unbound	19:37:36	0
4156273	99	75	62,6	cyclictest	4163889	-21	kworker/u4:2+events_unbound	19:37:36	0
4156274	99	74	65,7	cyclictest	53	-21	kswapd0	23:45:01	1
4156273	99	71	64,5	cyclictest	4154986	-21	kworker/u4:3+events_unbound	20:27:43	0
4156273	99	71	63,6	cyclictest	4167726	-21	kworker/u4:6+events_unbound	20:02:40	0
4156273	99	71	57,7	cyclictest	107333	-21	kworker/u4:5+events_unbound	23:25:01	0
4156273	99	70	62,6	cyclictest	4168997	-21	kworker/u4:7+events_unbound	20:07:40	0
4156273	99	70	58,5	cyclictest	80209	-21	kworker/u4:13+events_unbound	23:10:02	0
4156273	99	69	56,10	cyclictest	76371	-21	kworker/u4:12+events_unbound	23:03:15	0
4156273	99	67	51,6	cyclictest	53764	-21	kworker/u4:12+events_unbound	22:30:02	0
4156273	99	67	51,6	cyclictest	156342	-21	kworker/u4:0+events_unbound	00:17:45	0
4156274	99	64	57,5	cyclictest	67331	-21	kworker/u4:4+events_unbound	22:35:03	1
4156274	99	62	53,6	cyclictest	67331	-21	kworker/u4:4+events_unbound	22:53:15	1
4156273	99	62	44,6	cyclictest	138268	-21	kworker/u4:10+events_unbound	23:55:02	0
4156274	99	61	54,5	cyclictest	18329	-21	kworker/u4:3+events_unbound	21:42:59	1
4156273	99	60	51,6	cyclictest	145961	-21	mailstats	00:00:41	0
4156273	99	59	54,4	cyclictest	19	1	rcuc/0	19:57:38	0
4156274	99	58	44,9	cyclictest	56094	-21	cut	22:20:16	1
4156273	99	58	43,6	cyclictest	53764	-21	kworker/u4:12+events_unbound	22:28:58	0
4156273	99	58	40,8	cyclictest	107333	-21	kworker/u4:5+events_unbound	23:19:46	0
4156273	99	58	35,6	cyclictest	58300	-21	kworker/u4:5+events_unbound	22:37:01	0
4156273	99	58	33,20	cyclictest	53	-21	kswapd0	23:50:08	0
4156273	99	58	1,42	cyclictest	114518	-21	ssh	23:25:23	0
4156274	99	57	48,7	cyclictest	0	-21	swapper/1	22:45:14	1
4156274	99	57	40,6	cyclictest	71831	-21	kworker/u4:7+events_unbound	23:05:36	1
4156273	99	57	44,7	cyclictest	22166	-21	kworker/u4:8+events_unbound	21:52:59	0
4156273	99	57	42,13	cyclictest	47656	-21	if_eth0	22:10:25	0
4156273	99	56	50,4	cyclictest	15	1	ktimers/0	22:06:53	0
4156273	99	56	49,5	cyclictest	84708	-21	kworker/u4:16+events_unbound	23:35:03	0
4156273	99	56	38,7	cyclictest	4162619	-21	kworker/u4:16+events_unbound	19:40:03	0
4156274	99	55	48,5	cyclictest	84708	-21	kworker/u4:16+events_unbound	23:36:00	1
4156274	99	55	43,9	cyclictest	37	-21	kcompactd0	22:59:56	1
4156274	99	54	47,5	cyclictest	4156271	-21	cyclictest	22:02:45	1
4156274	99	54	43,9	cyclictest	176629	-21	kernelversion	00:35:24	1
4156274	99	54	40,10	cyclictest	4171283	-21	ps	20:05:38	1
4156274	99	53	45,6	cyclictest	75712	-21	kworker/u4:10+events_unbound	22:41:46	1
4156273	99	53	46,5	cyclictest	4176772	-21	kworker/u4:6+events_unbound	20:50:02	0
4156273	99	53	45,6	cyclictest	84708	-21	kworker/u4:16+events_unbound	23:34:59	0
4156273	99	53	45,6	cyclictest	4156194	-21	kworker/u4:0+events_unbound	19:45:02	0
4156274	99	52	45,5	cyclictest	92075	-21	gltestperf	23:00:21	1
4156274	99	52	29,7	cyclictest	142776	-21	kworker/u4:3+events_unbound	00:32:40	1
4156274	99	52	24,10	cyclictest	17	1	rcu_preempt	21:35:41	1
4156273	99	52	45,5	cyclictest	127788	-21	/usr/sbin/munin	23:40:23	0
4156273	99	52	40,8	cyclictest	60115	-21	cron	22:25:00	0
4156273	99	52	34,16	cyclictest	24550	-21	munin-plugin-st	21:45:00	0
4156274	99	51	43,6	cyclictest	89216	-21	kworker/u4:19+events_unbound	23:16:59	1
4156274	99	51	42,7	cyclictest	4172932	-21	systemd	20:12:40	1
4156274	99	51	33,6	cyclictest	138268	-21	kworker/u4:10+events_unbound	23:52:40	1
4156273	99	51	8,36	cyclictest	168062	-21	ntpq	00:25:39	0
4156273	99	51	44,5	cyclictest	20104	-21	sendmail	21:40:00	0
4156274	99	50	43,5	cyclictest	51912	-21	fschecks_time	22:15:19	1
4156274	99	50	41,6	cyclictest	4192031	-21	/usr/sbin/munin	21:15:16	1
4156273	99	50	44,4	cyclictest	67331	-21	kworker/u4:4+events_unbound	22:56:44	0
4156273	99	50	42,6	cyclictest	24846	-21	apt-get	21:45:14	0
4156274	99	49	42,5	cyclictest	4179918	-21	grep	20:40:19	1
4156274	99	49	25,7	cyclictest	160212	-21	kworker/u4:1+events_unbound	00:29:39	1
4156274	99	49	20,17	cyclictest	27	1	ktimers/1	22:07:05	1
4156273	99	49	42,5	cyclictest	4176771	-21	kworker/u4:1+events_unbound	20:45:02	0
4156273	99	49	41,6	cyclictest	4156271	-21	cyclictest	22:40:14	0
4156273	99	49	40,7	cyclictest	4156828	-21	gltestperf	19:10:20	0
4156273	99	49	39,8	cyclictest	171938	-21	/usr/sbin/munin	00:30:20	0
4156273	99	49	39,8	cyclictest	132544	-21	proc_pri	23:45:37	0
4156273	99	49	38,9	cyclictest	82885	-21	cpu	22:50:16	0
4156273	99	49	29,6	cyclictest	0	-21	swapper/0	20:20:00	0
4156273	99	49	23,20	cyclictest	256	50	irq/23-42890000.ethernet	21:25:08	0
4156274	99	48	41,5	cyclictest	113614	-21	latency_hist	23:25:02	1
4156274	99	48	39,7	cyclictest	4158783	-21	systemd	19:17:30	1
4156273	99	48	4,32	cyclictest	14	-21	ksoftirqd/0	22:20:01	0
4156273	99	48	31,6	cyclictest	4157494	-21	kworker/u4:5+events_unbound	19:15:35	0
4156274	99	47	41,4	cyclictest	119130	-21	ntpq	23:30:33	1
4156274	99	47	40,5	cyclictest	7236	-21	aten_r7power_po	21:25:21	1
4156274	99	47	40,5	cyclictest	4181888	-21	kworker/u4:11+events_unbound	20:59:46	1
4156274	99	47	40,5	cyclictest	3415	-21	ld	21:20:37	1
4156274	99	47	39,5	cyclictest	48004	-21	diskmemload	22:10:39	1
4156274	99	47	37,7	cyclictest	0	-21	swapper/1	22:28:07	1
4156274	99	47	27,6	cyclictest	22166	-21	kworker/u4:8+events_unbound	21:54:04	1
4156274	99	47	17,18	cyclictest	27	1	ktimers/1	23:25:29	1
4156274	99	46	41,4	cyclictest	35699	-21	kworker/u4:9+events_unbound	21:58:00	1
4156274	99	46	39,5	cyclictest	4170057	-21	sendmail_mailqu	20:00:47	1
4156274	99	46	39,5	cyclictest	133778	-21	kworker/u4:4+events_unbound	00:04:58	1
4156274	99	46	38,5	cyclictest	166966	-21	latency_hist	00:25:02	1
4156274	99	46	38,5	cyclictest	166966	-21	latency_hist	00:25:02	1
4156274	99	46	37,7	cyclictest	158622	-21	fschecks_time	00:15:19	1
4156274	99	46	37,6	cyclictest	150603	-21	unixbench_multi	00:05:39	1
4156274	99	46	35,8	cyclictest	154818	-21	sendmail_mailtr	00:10:39	1
4156274	99	46	20,16	cyclictest	27	1	ktimers/1	23:45:34	1
4156273	99	46	39,5	cyclictest	4187057	-21	ssh	21:10:01	0
4156273	99	46	36,8	cyclictest	4183414	-21	aten_r7power_cu	20:55:15	0
4156273	99	46	35,8	cyclictest	4162373	-21	switchtime	19:30:37	0
4156273	99	46	34,7	cyclictest	0	-21	swapper/0	19:30:01	0
4156274	99	45	37,5	cyclictest	100767	-21	df	23:10:18	1
4156274	99	45	33,8	cyclictest	4182785	-21	ps	20:50:36	1
4156273	99	45	37,6	cyclictest	4172927	-21	kworker/u4:18+events_unbound	20:33:59	0
4156273	99	44	37,5	cyclictest	11569	-21	aten2__	21:30:16	0
4156273	99	44	37,5	cyclictest	11569	-21	aten2__	21:30:16	0
4156273	99	44	35,7	cyclictest	4174443	-21	aten2__	20:20:16	0
4156274	99	43	36,5	cyclictest	4159554	-21	ntpq	19:20:25	1
4156274	99	43	23,15	cyclictest	0	-21	swapper/1	21:10:13	1
4156273	99	43	35,6	cyclictest	4178275	-21	aten_r7power_cu	20:35:15	0
4156274	99	42	26,5	cyclictest	4162619	-21	kworker/u4:16+events_unbound	19:40:05	1
4156273	99	42	36,4	cyclictest	4167756	-21	kworker/u4:6	19:55:00	0
4156273	99	42	36,4	cyclictest	4167756	-21	kworker/u4:6	19:54:59	0
4156273	99	42	34,6	cyclictest	163064	-21	fschecks_time	00:20:19	0
4156273	99	42	34,6	cyclictest	163064	-21	fschecks_time	00:20:18	0
4156273	99	42	32,7	cyclictest	4184973	-21	fschecks_time	21:00:19	0
4156274	99	41	34,5	cyclictest	4161349	-21	kworker/u4:15+events_unbound	19:36:59	1
4156274	99	41	34,5	cyclictest	4161349	-21	kworker/u4:15+events_unbound	19:36:58	1
4156273	99	41	32,7	cyclictest	4171921	-21	aten_r7power_en	20:10:17	0
4156274	99	40	29,8	cyclictest	0	-21	swapper/1	20:25:17	1
4156274	99	38	29,7	cyclictest	4180922	-21	aten_r7power_po	20:45:14	1
4156274	99	38	29,6	cyclictest	4156282	-21	grep	19:10:00	1
4156273	99	27	18,6	cyclictest	0	-21	swapper/0	19:10:02	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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