OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #7, slot #2

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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 792 highest latencies:

System rack7slot2.osadl.org (updated Mon Aug 24, 2026 12:44:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
966193	99	107	90,11	cyclictest	1167333	-21	ssh	12:20:12	0
966193	99	93	83,8	cyclictest	1052777	-21	sshd	10:10:44	0
966195	99	89	78,7	cyclictest	1078108	-21	ssh	10:40:09	1
966195	99	82	8,35	cyclictest	1176948	-21	ssh	12:30:29	1
966195	99	82	7,30	cyclictest	1007721	-21	ssh	09:20:42	1
966195	99	82	71,8	cyclictest	973893	-21	kworker/u4:3+events_unbound	08:05:16	1
966195	99	78	65,8	cyclictest	979000	-21	kworker/u4:11+events_unbound	08:45:29	1
966195	99	75	8,25	cyclictest	1145612	-21	ssh	11:55:27	1
966195	99	70	62,6	cyclictest	1080406	-21	kworker/u4:1+events_unbound	10:45:48	1
966193	99	69	59,8	cyclictest	963732	-21	kworker/u4:2+events_unbound	07:15:01	0
966195	99	68	60,6	cyclictest	1071368	-21	kworker/u4:16+events_unbound	10:35:46	1
966193	99	68	25,15	cyclictest	994725	-21	apt-get	09:00:12	0
966193	99	67	58,6	cyclictest	982836	-21	kworker/u4:4+events_unbound	09:40:40	0
966195	99	66	56,7	cyclictest	1015999	-21	fschecks_count	09:30:20	1
966195	99	65	55,7	cyclictest	53	-21	kswapd0	12:05:00	1
966193	99	65	52,8	cyclictest	1150006	-21	if_eth0	12:00:22	0
966193	99	65	52,10	cyclictest	982836	-21	kworker/u4:4+events_unbound	09:31:46	0
966193	99	64	56,6	cyclictest	1065921	-21	/usr/sbin/munin	10:25:40	0
966195	99	63	55,6	cyclictest	1040263	-21	kworker/u4:8+events_unbound	11:05:01	1
966193	99	63	4,15	cyclictest	995831	-21	apt-get	09:05:08	0
966195	99	62	52,8	cyclictest	985988	-21	sshd	08:25:21	1
966193	99	61	4,20	cyclictest	601	-21	sendmail-mta	09:20:11	0
966193	99	61	23,14	cyclictest	977925	-21	apt-get	07:55:12	0
966195	99	60	54,4	cyclictest	970083	-21	kworker/u4:15+events_unbound	07:45:11	1
966193	99	59	45,8	cyclictest	0	-21	swapper/0	09:10:43	0
966193	99	58	12,24	cyclictest	1006397	-21	http	09:20:01	0
966195	99	57	48,6	cyclictest	984118	-21	kworker/u4:6+events_unbound	08:30:24	1
966195	99	57	44,7	cyclictest	0	-21	swapper/1	11:25:34	1
966193	99	57	6,25	cyclictest	1029098	-21	apt-get	09:45:12	0
966193	99	57	12,24	cyclictest	1088101	-21	/usr/sbin/munin	10:50:36	0
966195	99	56	47,7	cyclictest	1031229	-21	kworker/u4:4+events_unbound	09:55:15	1
966193	99	56	22,31	cyclictest	988233	-21	apt-get	08:35:16	0
966193	99	56	11,10	cyclictest	1047726	-21	ntpq	10:05:30	0
966195	99	55	42,11	cyclictest	1141585	-21	timerwakeupswit	11:50:39	1
966193	99	55	47,6	cyclictest	957226	-21	kworker/u4:11+events_unbound	07:10:01	0
966193	99	55	47,6	cyclictest	1105679	-21	/usr/sbin/munin	11:10:24	0
966193	99	55	35,17	cyclictest	1100668	-21	aten_r7power_en	11:05:17	0
966193	99	55	13,16	cyclictest	1014142	-21	ssh	09:28:10	0
966193	99	54	32,19	cyclictest	980764	-21	fschecks_count	08:05:20	0
966195	99	53	45,6	cyclictest	1165239	-21	kworker/u4:11+events_unbound	12:20:59	1
966195	99	53	44,6	cyclictest	0	-21	swapper/1	10:05:35	1
966193	99	53	42,7	cyclictest	1111676	-21	kworker/u4:8-rpciod	11:35:16	0
966193	99	53	31,18	cyclictest	984118	-21	kworker/u4:6-xprtiod	08:30:00	0
966193	99	53	14,20	cyclictest	1140680	-21	ssh	11:50:18	0
966193	99	53	14,16	cyclictest	1083425	-21	ntpq	10:45:32	0
966195	99	52	45,5	cyclictest	1091817	-21	df_abs	10:55:17	1
966193	99	52	44,6	cyclictest	1145522	-21	/usr/sbin/munin	11:55:23	0
966193	99	52	12,16	cyclictest	1095337	-21	ssh	10:59:24	0
966193	99	52	12,15	cyclictest	1045805	-21	ssh	10:03:44	0
966193	99	52	11,21	cyclictest	1038776	-21	ntpq	09:55:30	0
966195	99	51	44,5	cyclictest	1034422	-21	ntpq	09:50:34	1
966195	99	51	40,9	cyclictest	966191	-21	cyclictest	08:23:12	1
966195	99	51	38,7	cyclictest	0	-21	swapper/1	10:00:32	1
966193	99	51	45,4	cyclictest	1021379	-21	grep	09:35:38	0
966193	99	51	43,5	cyclictest	1109884	-21	fschecks_time	11:15:20	0
966193	99	51	20,10	cyclictest	1074369	-21	ntpq	10:35:30	0
966193	99	51	12,14	cyclictest	1062544	-21	ssh	10:22:03	0
966195	99	50	43,5	cyclictest	979001	-21	kworker/u4:13+events_unbound	08:10:19	1
966195	99	50	43,5	cyclictest	967448	-21	latency_hist	07:15:00	1
966195	99	50	39,8	cyclictest	964917	-21	kworker/u4:5+events_unbound	07:55:14	1
966195	99	50	39,6	cyclictest	0	-21	swapper/1	11:45:32	1
966193	99	50	14,12	cyclictest	1132240	-21	ntpq	11:40:30	0
966193	99	50	13,14	cyclictest	984974	-21	ntpq	08:20:30	0
966195	99	49	41,6	cyclictest	972622	-21	kworker/u4:8+events_unbound	09:10:37	1
966195	99	49	41,6	cyclictest	964917	-21	kworker/u4:5+events_unbound	07:40:08	1
966195	99	49	38,7	cyclictest	997189	-21	diskmemload	12:16:38	1
966193	99	49	43,4	cyclictest	1180942	-21	fschecks_count	12:35:20	0
966193	99	49	42,5	cyclictest	987982	-21	idleruntime-cro	08:35:00	0
966193	99	49	40,6	cyclictest	1154431	-21	gltestperf	12:05:24	0
966193	99	49	16,10	cyclictest	991413	-21	netstat	08:45:23	0
966193	99	49	14,14	cyclictest	989599	-21	/usr/sbin/munin	08:40:12	0
966195	99	48	41,5	cyclictest	1056596	-21	ntpq	10:15:27	1
966195	99	48	38,8	cyclictest	1025680	-21	sendmail_mailtr	09:40:38	1
966195	99	48	38,7	cyclictest	37	-21	kcompactd0	09:15:38	1
966193	99	48	41,5	cyclictest	975715	-21	fschecks_time	07:45:20	0
966193	99	48	41,4	cyclictest	1176458	-21	df_abs	12:30:18	0
966193	99	48	22,8	cyclictest	979780	-21	ntpq	08:00:26	0
966193	99	48	2,12	cyclictest	53	-21	kswapd0	10:40:07	0
966193	99	48	18,10	cyclictest	972539	-21	unixbench_multi	07:30:36	0
966193	99	48	14,10	cyclictest	970846	-21	ntpq	07:25:25	0
966193	99	48	10,15	cyclictest	974756	-21	ntp_states	07:40:31	0
966193	99	48	10,14	cyclictest	1070047	-21	ntp_states	10:30:35	0
966193	99	48	10,14	cyclictest	1070047	-21	ntp_states	10:30:35	0
966195	99	47	40,5	cyclictest	1052493	-21	awk	10:10:39	1
966195	99	47	39,5	cyclictest	993313	-21	latency_hist	08:55:01	1
966195	99	47	37,8	cyclictest	1064797	-21	aten2__	10:25:16	1
966195	99	47	36,8	cyclictest	0	-21	swapper/1	12:35:27	1
966195	99	47	33,10	cyclictest	0	-21	swapper/1	07:15:29	1
966195	99	47	28,6	cyclictest	1125315	-21	kworker/u4:7+events_unbound	12:05:13	1
966193	99	47	37,7	cyclictest	1111674	-21	kworker/u4:2-rpciod	11:20:20	0
966193	99	47	36,9	cyclictest	1123575	-21	/usr/sbin/munin	11:30:23	0
966193	99	47	24,18	cyclictest	1119601	-21	ssh	11:25:39	0
966193	99	47	12,12	cyclictest	1096809	-21	ntpq	11:00:29	0
966195	99	46	40,4	cyclictest	1069416	-21	cpu	10:30:17	1
966195	99	46	40,4	cyclictest	1069416	-21	cpu	10:30:17	1
966195	99	46	39,5	cyclictest	1164570	-21	kworker/u4:5+events_unbound	12:25:58	1
966195	99	46	39,5	cyclictest	1087668	-21	kernelversion	10:50:21	1
966195	99	46	37,6	cyclictest	976853	-21	sed	07:50:14	1
966193	99	46	9,14	cyclictest	983666	-21	ntpq	08:15:30	0
966193	99	46	9,14	cyclictest	983666	-21	ntpq	08:15:30	0
966193	99	46	35,7	cyclictest	0	-21	swapper/0	07:35:42	0
966193	99	46	30,12	cyclictest	1162888	-21	ssh	12:15:15	0
966193	99	46	12,10	cyclictest	982353	-21	ntpq	08:10:28	0
966193	99	46	12,10	cyclictest	1173629	-21	sshd	12:26:29	0
966193	99	46	10,13	cyclictest	1058014	-21	ssh	10:16:58	0
966195	99	45	38,5	cyclictest	979965	-21	sendmail_mailqu	08:00:37	1
966195	99	45	38,5	cyclictest	1127138	-21	grep	11:35:01	1
966195	99	45	38,5	cyclictest	0	-21	swapper/1	09:25:28	1
966195	99	45	37,6	cyclictest	1113767	-21	latency_hist	11:20:01	1
966195	99	45	33,10	cyclictest	1064466	-21	idleruntime-cro	10:25:00	1
966193	99	45	39,4	cyclictest	964917	-21	kworker/u4:5+xprtiod	07:15:18	0
966193	99	45	37,5	cyclictest	977055	-21	gltestperf	07:50:17	0
966193	99	45	37,5	cyclictest	969410	-21	gltestperf	07:20:23	0
966193	99	45	28,14	cyclictest	992158	-21	apt-get	08:50:14	0
966193	99	45	19,23	cyclictest	1159242	-21	ntpq	12:10:32	0
966195	99	44	38,4	cyclictest	994070	-21	sshd	08:55:32	1
966195	99	44	38,4	cyclictest	1132807	-21	/usr/sbin/munin	11:40:41	1
966195	99	44	38,4	cyclictest	1030097	-21	sendmail_mailqu	09:45:39	1
966195	99	44	36,6	cyclictest	988221	-21	acpi	08:35:12	1
966195	99	44	36,6	cyclictest	1159417	-21	sendmail_mailqu	12:10:38	1
966193	99	44	38,4	cyclictest	0	-21	swapper/0	09:50:31	0
966195	99	43	30,5	cyclictest	0	-21	swapper/1	08:40:29	1
966193	99	43	8,8	cyclictest	1136151	-21	ssh	11:45:17	0
966195	99	42	34,7	cyclictest	1021393	-21	unixbench_multi	09:35:38	1
966195	99	42	34,6	cyclictest	971605	-21	aten_r7power_cu	07:30:14	1
966195	99	42	33,7	cyclictest	971167	-21	timerandwakeup	07:25:37	1
966195	99	42	33,6	cyclictest	0	-21	swapper/1	11:10:19	1
966195	99	42	33,6	cyclictest	0	-21	swapper/1	11:05:20	1
966193	99	42	8,10	cyclictest	994057	-21	ntpq	08:55:31	0
966195	99	41	33,6	cyclictest	994753	-21	aten2__	09:00:15	1
966195	99	41	33,4	cyclictest	0	-21	swapper/1	07:35:32	1
966195	99	41	32,7	cyclictest	996077	-21	acpi	09:05:12	1
966195	99	41	29,8	cyclictest	1115032	-21	grep	11:20:38	1
966195	99	40	30,6	cyclictest	0	-21	swapper/1	08:15:20	1
966195	99	40	30,6	cyclictest	0	-21	swapper/1	08:15:20	1
966195	99	39	31,5	cyclictest	0	-21	swapper/1	11:35:42	1
966195	99	38	31,5	cyclictest	970109	-21	idleruntime-cro	07:25:00	1
966195	99	32	17,10	cyclictest	966280	-21	ls	07:10:02	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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