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 Wed Apr 01, 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
492157	99	100	93,5	cyclictest	547994	-21	kworker/u4:7+events_unbound	09:38:43	0
492157	99	100	93,5	cyclictest	547994	-21	kworker/u4:7+events_unbound	09:38:43	0
492157	99	87	77,6	cyclictest	692561	-21	kworker/u4:17+events_unbound	12:29:10	0
492157	99	85	76,7	cyclictest	502331	-21	kworker/u4:0+events_unbound	09:13:38	0
492157	99	85	62,21	cyclictest	53	-21	kswapd0	09:55:06	0
492157	99	78	65,11	cyclictest	652997	-21	kworker/u4:7+events_unbound	11:44:02	0
492157	99	77	57,17	cyclictest	661958	-21	kworker/u4:9-nfsiod	12:05:16	0
492158	99	76	32,31	cyclictest	663901	-21	latency_hist	11:50:01	1
492157	99	75	66,6	cyclictest	502331	-21	kworker/u4:0+events_unbound	09:10:01	0
492158	99	74	35,33	cyclictest	587630	-21	kworker/u4:7-rpciod	10:33:53	1
492158	99	74	35,33	cyclictest	587630	-21	kworker/u4:7-rpciod	10:33:53	1
492158	99	74	32,22	cyclictest	506203	-21	apt-get	08:05:00	1
492158	99	74	20,32	cyclictest	0	-21	swapper/1	11:00:30	1
492157	99	73	65,6	cyclictest	679765	-21	kworker/u4:12+events_unbound	12:14:07	0
492158	99	72	25,28	cyclictest	0	-21	swapper/1	09:35:39	1
492158	99	72	25,28	cyclictest	0	-21	swapper/1	09:35:39	1
492158	99	72	20,29	cyclictest	0	-21	swapper/1	09:50:37	1
492158	99	70	20,30	cyclictest	0	-21	swapper/1	09:30:19	1
492158	99	69	2,15	cyclictest	683921	-21	ssh	12:12:07	1
492158	99	69	19,28	cyclictest	0	-21	swapper/1	12:30:34	1
492158	99	67	58,6	cyclictest	490876	-21	kworker/u4:6+events_unbound	07:43:30	1
492158	99	67	4,58	cyclictest	637734	-21	ssh	11:20:13	1
492158	99	67	3,58	cyclictest	625334	-21	ssh	11:05:34	1
492158	99	66	2,13	cyclictest	697018	-21	ssh	12:26:56	1
492158	99	66	20,25	cyclictest	0	-21	swapper/1	09:50:01	1
492158	99	66	1,15	cyclictest	526177	-21	ssh	09:12:54	1
492158	99	66	1,14	cyclictest	552627	-21	ssh	09:42:26	1
492158	99	65	1,13	cyclictest	635374	-21	ssh	11:16:50	1
492158	99	65	1,13	cyclictest	606311	-21	ssh	10:44:37	1
492158	99	64	4,54	cyclictest	606884	-21	ssh	10:45:14	1
492158	99	64	2,17	cyclictest	528448	-21	ssh	09:15:21	1
492157	99	64	52,8	cyclictest	521633	-21	/usr/sbin/munin	09:00:38	0
492158	99	63	32,28	cyclictest	496978	-21	switchtime	07:25:36	1
492158	99	62	7,47	cyclictest	665138	-21	ssh	11:50:42	1
492158	99	62	4,53	cyclictest	571906	-21	ssh	10:05:00	1
492158	99	62	32,28	cyclictest	630197	-21	grep	11:10:39	1
492158	99	62	2,56	cyclictest	669109	-21	ssh	11:55:24	1
492158	99	62	25,29	cyclictest	511376	-21	kworker/u4:11-rpciod	08:45:01	1
492157	99	62	54,6	cyclictest	552527	-21	kworker/u4:3+events_unbound	09:48:45	0
492157	99	62	44,15	cyclictest	502331	-21	kworker/u4:0+events_unbound	09:23:41	0
492157	99	62	41,16	cyclictest	0	-21	swapper/0	10:45:32	0
492157	99	62	12,23	cyclictest	0	-21	swapper/0	08:05:10	0
492158	99	61	31,28	cyclictest	692561	-21	kworker/u4:17-rpciod	12:40:02	1
492158	99	61	2,6	cyclictest	686062	-21	apt-get	12:15:13	1
492157	99	61	2,11	cyclictest	516518	-21	apt-get	08:45:05	0
492158	99	60	4,50	cyclictest	642816	-21	ntpq	11:25:27	1
492158	99	60	27,30	cyclictest	656389	-21	switchtime	11:40:37	1
492157	99	60	50,5	cyclictest	0	-21	swapper/0	12:02:59	0
492157	99	60	44,13	cyclictest	53	-21	kswapd0	11:05:16	0
492158	99	59	33,23	cyclictest	650978	-21	aten2__	11:35:16	1
492158	99	59	2,8	cyclictest	504367	-21	ntpq	07:55:25	1
492158	99	59	25,27	cyclictest	0	-21	swapper/1	12:05:47	1
492158	99	58	5,44	cyclictest	572880	-21	ntpq	10:05:27	1
492158	99	58	4,49	cyclictest	691227	-21	ntpq	12:20:29	1
492158	99	58	28,28	cyclictest	673332	-21	ssh	12:00:20	1
492158	99	58	27,28	cyclictest	507578	-21	latency_hist	08:10:01	1
492158	99	58	1,54	cyclictest	577251	-21	ntpq	10:10:27	1
492157	99	58	43,9	cyclictest	587680	-21	ssh	10:22:17	0
492158	99	57	31,22	cyclictest	0	-21	swapper/1	08:25:21	1
492158	99	57	2,7	cyclictest	611238	-21	apt-get	10:50:12	1
492158	99	57	26,28	cyclictest	0	-21	swapper/1	08:20:33	1
492158	99	57	25,29	cyclictest	0	-21	swapper/1	09:26:31	1
492158	99	57	1,5	cyclictest	615665	-21	apt-get	10:55:14	1
492158	99	57	1,16	cyclictest	565983	-21	ssh	09:57:36	1
492157	99	57	50,5	cyclictest	492083	-21	kworker/u4:9+events_unbound	08:23:35	0
492157	99	57	48,6	cyclictest	519110	-21	kworker/u4:8+events_unbound	08:53:38	0
492157	99	57	48,6	cyclictest	519110	-21	kworker/u4:8+events_unbound	08:53:38	0
492158	99	56	6,44	cyclictest	492136	-21	munin-run	07:10:00	1
492158	99	56	3,14	cyclictest	533210	-21	ntpq	09:20:35	1
492158	99	56	26,27	cyclictest	0	-21	swapper/1	10:35:33	1
492158	99	56	25,29	cyclictest	0	-21	swapper/1	10:20:25	1
492158	99	56	2,10	cyclictest	589715	-21	apt-get	10:25:15	1
492157	99	56	36,17	cyclictest	661961	-21	kworker/u4:12+xprtiod	11:50:11	0
492157	99	56	35,18	cyclictest	515651	-21	fschecks_count	08:40:17	0
492158	99	55	2,7	cyclictest	508305	-21	ntpq	08:10:26	1
492158	99	55	2,6	cyclictest	518637	-21	ntpq	08:50:27	1
492158	99	55	2,6	cyclictest	518637	-21	ntpq	08:50:27	1
492158	99	55	24,28	cyclictest	0	-21	swapper/1	07:20:30	1
492158	99	55	24,28	cyclictest	0	-21	swapper/1	07:20:30	1
492158	99	55	2,3	cyclictest	580904	-21	apt-get	10:15:11	1
492157	99	55	46,7	cyclictest	671926	-21	sshd	11:59:04	0
492157	99	55	45,5	cyclictest	0	-21	swapper/0	09:30:14	0
492157	99	55	37,16	cyclictest	528612	-21	gcc	09:15:29	0
492158	99	54	3,48	cyclictest	501963	-21	ps	07:45:35	1
492158	99	54	3,47	cyclictest	498125	-21	ps	07:30:36	1
492158	99	54	2,5	cyclictest	492886	-21	ntpq	07:10:26	1
492158	99	54	25,26	cyclictest	0	-21	swapper/1	11:30:21	1
492158	99	54	2,13	cyclictest	520703	-21	apt-get	09:00:14	1
492157	99	54	47,5	cyclictest	578694	-21	kworker/u4:3+events_unbound	10:13:51	0
492157	99	54	46,5	cyclictest	644056	-21	kworker/u4:10+events_unbound	11:34:13	0
492157	99	54	36,14	cyclictest	0	-21	swapper/0	08:55:09	0
492157	99	54	32,19	cyclictest	492549	-21	fschecks_count	07:10:19	0
492157	99	54	30,20	cyclictest	506207	-21	grep	08:05:00	0
492158	99	53	2,6	cyclictest	503139	-21	ntpq	07:50:28	1
492158	99	53	2,6	cyclictest	499269	-21	ntpq	07:35:27	1
492158	99	53	2,6	cyclictest	499269	-21	ntpq	07:35:27	1
492158	99	53	2,47	cyclictest	517397	-21	ntpq	08:45:34	1
492157	99	53	45,5	cyclictest	687130	-21	sh	12:15:38	0
492157	99	53	45,5	cyclictest	550579	-21	gltestperf	09:40:21	0
492157	99	53	38,9	cyclictest	593423	-21	ssh	10:29:28	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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