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 Sep 14, 2026 12:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3901687	99	112	87,18	cyclictest	3901662	-21	munin-run	07:10:00	0
3901687	99	108	89,16	cyclictest	3901683	-21	cyclictest	09:45:13	0
3901688	99	101	92,7	cyclictest	3899176	-21	kworker/u4:2+events_unbound	07:20:00	1
3901687	99	95	40,50	cyclictest	53	-21	kswapd0	11:40:08	0
3901687	99	91	80,7	cyclictest	4055301	-21	kworker/u4:10+events_unbound	12:26:02	0
3901688	99	90	31,6	cyclictest	0	-21	swapper/1	11:45:14	1
3901687	99	87	80,5	cyclictest	3988801	-21	kworker/u4:5+events_unbound	10:35:45	0
3901688	99	85	77,6	cyclictest	4024378	-21	kworker/u4:8+events_unbound	10:55:51	1
3901688	99	81	4,43	cyclictest	4094175	-21	ssh	12:10:27	1
3901687	99	81	61,15	cyclictest	3901683	-21	cyclictest	12:06:07	0
3901687	99	81	61,15	cyclictest	3901683	-21	cyclictest	12:06:06	0
3901688	99	80	44,33	cyclictest	4014167	-21	ld	10:40:34	1
3901688	99	80	27,18	cyclictest	4058040	-21	df	11:30:16	1
3901687	99	79	1,55	cyclictest	4022879	-21	ntpq	10:50:23	0
3901687	99	74	22,29	cyclictest	256	50	irq/23-42890000.ethernet	11:55:33	0
3901687	99	73	2,50	cyclictest	4039871	-21	apt-get	11:10:10	0
3901687	99	73	1,44	cyclictest	3926377	-21	apt-get	08:45:10	0
3901688	99	72	39,5	cyclictest	3901683	-21	cyclictest	08:45:25	1
3901687	99	72	49,20	cyclictest	3901683	-21	cyclictest	12:18:18	0
3901688	99	71	36,6	cyclictest	4098832	-21	ssh	12:15:38	1
3901688	99	71	35,7	cyclictest	0	-21	swapper/1	11:10:24	1
3901687	99	71	2,39	cyclictest	3951729	-21	ssh	09:30:30	0
3901687	99	71	20,39	cyclictest	0	-21	swapper/0	09:20:37	0
3901688	99	69	35,30	cyclictest	0	-21	swapper/1	10:00:41	1
3901687	99	69	20,26	cyclictest	0	-21	swapper/0	11:25:24	0
3901687	99	69	17,35	cyclictest	15	1	ktimers/0	10:30:01	0
3901687	99	68	19,29	cyclictest	0	-21	swapper/0	08:35:36	0
3901687	99	68	1,45	cyclictest	4053113	-21	cat	11:25:02	0
3901688	99	67	54,9	cyclictest	0	-21	swapper/1	10:50:25	1
3901687	99	67	2,41	cyclictest	4031399	-21	diskstats	11:00:19	0
3901687	99	66	7,54	cyclictest	3917334	-21	apt-get	08:10:20	0
3901687	99	66	31,33	cyclictest	4014506	-21	timerwakeupswit	10:40:41	0
3901687	99	66	2,57	cyclictest	3903196	-21	apt-get	07:15:13	0
3901687	99	65	42,20	cyclictest	3901683	-21	cyclictest	09:58:22	0
3901687	99	65	2,39	cyclictest	4079835	-21	munin-run	11:55:01	0
3901688	99	64	59,3	cyclictest	3906844	-21	kworker/u4:3+events_unbound	07:50:07	1
3901688	99	64	51,9	cyclictest	0	-21	swapper/1	10:24:59	1
3901687	99	64	48,10	cyclictest	0	-21	swapper/0	07:10:12	0
3901687	99	64	37,19	cyclictest	53	-21	kswapd0	10:30:09	0
3901687	99	64	3,40	cyclictest	3922452	-21	apt-get	08:30:11	0
3901687	99	64	30,30	cyclictest	0	-21	swapper/0	10:20:29	0
3901687	99	64	20,40	cyclictest	3904502	-21	apt-get	07:20:12	0
3901687	99	63	2,36	cyclictest	3977744	-21	apt-get	10:00:14	0
3901687	99	63	18,27	cyclictest	256	50	irq/23-42890000.ethernet	11:05:31	0
3901687	99	63	18,27	cyclictest	256	50	irq/23-42890000.ethernet	11:05:30	0
3901687	99	62	3,54	cyclictest	3921182	-21	apt-get	08:25:13	0
3901687	99	62	28,31	cyclictest	3932558	-21	kworker/u4:0+rpciod	09:10:41	0
3901687	99	62	2,57	cyclictest	3914023	-21	ntpq	07:55:30	0
3901687	99	62	2,37	cyclictest	4043996	-21	apt-get	11:15:05	0
3901688	99	61	50,8	cyclictest	3910681	-21	kworker/u4:14+events_unbound	08:05:13	1
3901687	99	61	3,55	cyclictest	3982999	-21	ntpq	10:05:31	0
3901687	99	61	29,29	cyclictest	3911239	-21	gltestperf	07:45:19	0
3901687	99	61	2,54	cyclictest	3906384	-21	ntpq	07:25:33	0
3901687	99	61	1,56	cyclictest	3960553	-21	/usr/sbin/munin	09:40:24	0
3901688	99	60	50,7	cyclictest	3922258	-21	kworker/u4:5+events_unbound	08:55:27	1
3901687	99	60	29,27	cyclictest	0	-21	swapper/0	08:00:23	0
3901687	99	60	19,37	cyclictest	256	50	irq/23-42890000.ethernet	07:40:20	0
3901688	99	59	50,7	cyclictest	400	-21	systemd-logind	10:10:42	1
3901688	99	59	50,7	cyclictest	400	-21	systemd-logind	10:10:41	1
3901688	99	59	46,9	cyclictest	4002377	-21	kworker/u4:0+events_unbound	10:30:35	1
3901688	99	59	46,11	cyclictest	3969971	-21	switchtime	09:50:38	1
3901687	99	59	8,30	cyclictest	3932597	-21	diskmemload	09:35:21	0
3901687	99	59	36,20	cyclictest	0	-21	swapper/0	09:25:25	0
3901687	99	59	35,21	cyclictest	4084557	-21	acpi	12:00:10	0
3901687	99	59	35,21	cyclictest	4057871	-21	aten_r7power_cu	11:30:16	0
3901687	99	59	29,27	cyclictest	0	-21	swapper/0	10:10:38	0
3901687	99	59	29,27	cyclictest	0	-21	swapper/0	10:10:37	0
3901687	99	59	29,27	cyclictest	0	-21	swapper/0	07:35:21	0
3901687	99	59	29,25	cyclictest	0	-21	swapper/0	08:55:18	0
3901687	99	59	27,28	cyclictest	0	-21	swapper/0	09:50:25	0
3901687	99	59	2,53	cyclictest	4102293	-21	apt-get	12:20:14	0
3901687	99	59	2,53	cyclictest	4102293	-21	apt-get	12:20:14	0
3901687	99	59	1,56	cyclictest	4062310	-21	apt-get	11:35:17	0
3901687	99	59	1,51	cyclictest	3931484	-21	apt-get	09:05:12	0
3901687	99	59	1,51	cyclictest	3912149	-21	apt-get	07:50:12	0
3901687	99	59	1,39	cyclictest	4094047	-21	ntpq	12:10:21	0
3901687	99	59	13,26	cyclictest	256	50	irq/23-42890000.ethernet	12:35:23	0
3901687	99	58	3,51	cyclictest	4027475	-21	ntpq	10:55:34	0
3901687	99	58	30,26	cyclictest	3937339	-21	acpi	09:15:10	0
3901687	99	58	2,53	cyclictest	3991025	-21	apt-get	10:15:10	0
3901687	99	58	15,25	cyclictest	0	-21	swapper/0	12:30:31	0
3901687	99	57	5,48	cyclictest	4018470	-21	ssh	10:45:27	0
3901687	99	57	2,52	cyclictest	3930883	-21	ntpq	09:00:35	0
3901687	99	57	2,52	cyclictest	3916581	-21	ntpq	08:05:28	0
3901688	99	56	44,9	cyclictest	3988802	-21	kworker/u4:7+events_unbound	10:15:11	1
3901687	99	56	26,27	cyclictest	0	-21	swapper/0	08:20:20	0
3901687	99	56	2,47	cyclictest	3927645	-21	apt-get	08:50:10	0
3901687	99	56	1,40	cyclictest	4072060	-21	ntpq	11:45:30	0
3901688	99	55	50,3	cyclictest	4082569	-21	kworker/u4:2+events_unbound	12:21:02	1
3901688	99	55	50,3	cyclictest	4082569	-21	kworker/u4:2+events_unbound	12:21:01	1
3901688	99	55	44,8	cyclictest	317	-21	systemd-journal	09:35:35	1
3901688	99	55	43,9	cyclictest	3905585	-21	cron	07:24:59	1
3901687	99	55	3,46	cyclictest	3907043	-21	apt-get	07:30:11	0
3901687	99	55	2,50	cyclictest	3925715	-21	ntpq	08:40:34	0
3901688	99	54	46,6	cyclictest	3965816	-21	unixbench_multi	09:45:49	1
3901688	99	53	5,38	cyclictest	3974156	-21	ssh	09:55:33	1
3901688	99	53	44,6	cyclictest	4069043	-21	kworker/u4:6+events_unbound	11:56:02	1
3901688	99	53	41,7	cyclictest	0	-21	swapper/1	09:20:15	1
3901687	99	53	3,45	cyclictest	3919147	-21	ntpq	08:15:24	0
3901688	99	52	43,7	cyclictest	4067046	-21	/usr/sbin/munin	11:40:22	1
3901688	99	52	42,7	cyclictest	0	-21	swapper/1	08:25:20	1
3901688	99	52	40,9	cyclictest	4049831	-21	ssh	11:20:38	1
3901688	99	52	39,10	cyclictest	4085742	-21	timerwakeupswit	12:00:38	1
3901688	99	51	44,5	cyclictest	4113502	-21	kworker/u4:1+events_unbound	12:36:03	1
3901688	99	51	40,9	cyclictest	3924515	-21	mailstats	08:35:37	1
3901688	99	50	41,6	cyclictest	3909055	-21	sendmail_mailqu	07:35:39	1
3901688	99	50	36,11	cyclictest	0	-21	swapper/1	12:05:11	1
3901688	99	50	36,11	cyclictest	0	-21	swapper/1	12:05:10	1
3901688	99	49	39,8	cyclictest	4079837	-21	munin-plugin-st	11:55:00	1
3901688	99	49	38,8	cyclictest	3920942	-21	unixbench_singl	08:20:44	1
3901688	99	49	36,6	cyclictest	0	-21	swapper/1	09:05:36	1
3901688	99	49	35,9	cyclictest	3908134	-21	modprobe	07:35:01	1
3901688	99	48	40,6	cyclictest	4066544	-21	awk	11:40:01	1
3901688	99	48	40,6	cyclictest	3913397	-21	systemd	07:55:10	1
3901688	99	48	39,6	cyclictest	3941606	-21	idleruntime-cro	09:20:00	1
3901688	99	47	5,32	cyclictest	3932597	-21	diskmemload	12:30:30	1
3901688	99	47	40,5	cyclictest	3952227	-21	unixbench_multi	09:30:41	1
3901688	99	47	40,5	cyclictest	3914905	-21	sed	08:00:17	1
3901688	99	47	39,5	cyclictest	0	-21	swapper/1	11:05:15	1
3901688	99	47	39,5	cyclictest	0	-21	swapper/1	11:05:15	1
3901688	99	47	38,6	cyclictest	0	-21	swapper/1	09:25:31	1
3901688	99	46	39,5	cyclictest	3909850	-21	fschecks_count	07:40:19	1
3901688	99	46	39,4	cyclictest	4004116	-21	munin-run	10:30:00	1
3901688	99	46	38,5	cyclictest	4045041	-21	ntp_kernel_pll_	11:15:31	1
3901688	99	46	37,6	cyclictest	0	-21	swapper/1	11:25:35	1
3901688	99	46	36,7	cyclictest	0	-21	swapper/1	09:10:27	1
3901688	99	46	36,6	cyclictest	4028871	-21	kworker/u4:9-rpciod	11:00:19	1
3901688	99	45	39,4	cyclictest	3960328	-21	fschecks_time	09:40:20	1
3901688	99	45	37,5	cyclictest	4087101	-21	kworker/u4:7-rpciod	12:25:22	1
3901688	99	45	34,7	cyclictest	3903019	-21	modprobe	07:14:59	1
3901688	99	44	37,5	cyclictest	3917531	-21	sed	08:10:21	1
3901688	99	44	34,7	cyclictest	3927780	-21	aten_r7power_vo	08:50:15	1
3901688	99	43	36,5	cyclictest	3982241	-21	ssh	10:05:16	1
3901688	99	43	31,8	cyclictest	3918896	-21	fschecks_count	08:15:20	1
3901688	99	42	35,5	cyclictest	3923585	-21	grep	08:35:02	1
3901688	99	42	34,5	cyclictest	0	-21	swapper/1	10:35:23	1
3901688	99	42	33,7	cyclictest	4018224	-21	grep	10:45:21	1
3901688	99	42	33,7	cyclictest	3906696	-21	timerwakeupswit	07:25:40	1
3901688	99	42	33,6	cyclictest	0	-21	swapper/1	08:40:33	1
3901688	99	41	32,7	cyclictest	3910990	-21	aten_r7power_po	07:45:16	1
3901688	99	40	32,5	cyclictest	3901861	-21	cat	07:10:02	1
3901688	99	40	30,7	cyclictest	0	-21	swapper/1	09:00:39	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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