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 Sun Jul 26, 2026 00:44:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
4046519	99	107	99,6	cyclictest	4120172	-21	kworker/u4:2+events_unbound	22:02:20	1
4046519	99	107	100,5	cyclictest	4059252	-21	kworker/u4:4+events_unbound	20:02:07	1
4046518	99	102	93,6	cyclictest	4190675	-21	kworker/u4:4+events_unbound	23:32:35	0
4046518	99	99	79,16	cyclictest	1073	-21	snmpd	20:45:13	0
4046519	99	94	87,5	cyclictest	4049029	-21	kworker/u4:6+events_unbound	19:37:06	1
4046519	99	93	86,5	cyclictest	4051597	-21	kworker/u4:14+events_unbound	19:47:06	1
4046519	99	93	86,5	cyclictest	4042804	-21	kworker/u4:5+events_unbound	19:12:05	1
4046518	99	93	84,6	cyclictest	5711	-21	kworker/u4:2+events_unbound	00:02:39	0
4046518	99	92	83,6	cyclictest	4190676	-21	kworker/u4:5+events_unbound	23:22:33	0
4046518	99	91	40,10	cyclictest	256	50	irq/23-42890000.ethernet	21:05:11	0
4046519	99	82	76,4	cyclictest	4059253	-21	kworker/u4:5+events_unbound	20:12:07	1
4046518	99	82	74,6	cyclictest	32040	-21	kworker/u4:12+events_unbound	00:07:37	0
4046518	99	82	73,6	cyclictest	41074	-21	kworker/u4:4+events_unbound	00:17:38	0
4046518	99	74	38,24	cyclictest	4077668	-21	ssh	21:10:13	0
4046518	99	69	45,17	cyclictest	53	-21	kswapd0	22:45:06	0
4046518	99	68	60,6	cyclictest	4186173	-21	kworker/u4:12+events_unbound	23:12:29	0
4046518	99	68	58,8	cyclictest	4102138	-21	kworker/u4:11+events_unbound	21:57:21	0
4046519	99	67	52,8	cyclictest	0	-21	swapper/1	22:05:35	1
4046519	99	63	54,7	cyclictest	4064370	-21	kworker/u4:14+events_unbound	20:57:10	1
4046518	99	61	48,9	cyclictest	37	-21	kcompactd0	20:07:09	0
4046518	99	61	47,5	cyclictest	4133043	-21	kworker/u4:5+events_unbound	22:42:26	0
4046519	99	59	52,5	cyclictest	4068206	-21	kworker/u4:9+events_unbound	20:37:15	1
4046518	99	59	38,10	cyclictest	4047755	-21	cron	19:14:59	0
4046519	99	58	48,8	cyclictest	4048678	-21	sendmail_mailqu	19:15:36	1
4046518	99	57	48,7	cyclictest	4064370	-21	kworker/u4:14+events_unbound	20:22:08	0
4046518	99	57	45,8	cyclictest	37	-21	kcompactd0	23:35:53	0
4046518	99	57	38,16	cyclictest	53021	-21	ls	00:20:41	0
4046519	99	56	50,4	cyclictest	27	1	ktimers/1	22:11:52	1
4046518	99	56	49,5	cyclictest	4060551	-21	kworker/u4:15+events_unbound	20:17:07	0
4046518	99	56	48,5	cyclictest	4045240	-21	kworker/u4:1+events_unbound	20:05:01	0
4046518	99	56	46,7	cyclictest	65442	-21	/usr/sbin/munin	00:35:18	0
4046518	99	56	44,10	cyclictest	21240	-21	sh	23:45:21	0
4046519	99	55	48,5	cyclictest	67459	-21	kworker/u4:11+events_unbound	00:37:41	1
4046519	99	55	48,5	cyclictest	4059255	-21	kworker/u4:13+events_unbound	20:20:03	1
4046519	99	55	48,5	cyclictest	4057978	-21	kworker/u4:11+events_unbound	20:15:02	1
4046519	99	55	45,7	cyclictest	4077063	-21	switchtime	21:05:41	1
4046518	99	55	47,6	cyclictest	4049028	-21	kworker/u4:4+events_unbound	19:32:05	0
4046518	99	55	34,19	cyclictest	0	-21	swapper/0	21:00:01	0
4046519	99	54	46,5	cyclictest	0	-21	swapper/1	22:40:17	1
4046518	99	54	47,5	cyclictest	4146634	-21	systemd	22:27:24	0
4046518	99	54	43,8	cyclictest	4123899	-21	sh	22:01:26	0
4046518	99	54	37,5	cyclictest	4185522	-21	kworker/u4:6+events_unbound	23:17:30	0
4046519	99	53	46,5	cyclictest	4080207	-21	kworker/u4:12+events_unbound	21:25:01	1
4046519	99	53	44,7	cyclictest	53	-21	kswapd0	23:45:01	1
4046519	99	53	44,6	cyclictest	43003	-21	dpkg	00:10:11	1
4046518	99	53	45,5	cyclictest	4166832	-21	ssh	22:50:24	0
4046519	99	52	45,5	cyclictest	4059254	-21	kworker/u4:9+events_unbound	19:57:49	1
4046518	99	52	45,5	cyclictest	4181670	-21	kworker/u4:4+events_unbound	23:07:31	0
4046518	99	52	34,6	cyclictest	18578	-21	kworker/u4:14+events_unbound	00:12:38	0
4046519	99	51	43,5	cyclictest	4061547	-21	switchtime	20:05:38	1
4046519	99	51	41,8	cyclictest	3365	-21	aten_r7power_vo	23:25:18	1
4046519	99	51	41,8	cyclictest	3365	-21	aten_r7power_vo	23:25:17	1
4046519	99	51	40,9	cyclictest	4078058	-21	fschecks_count	21:10:26	1
4046519	99	51	35,13	cyclictest	0	-21	swapper/1	00:00:13	1
4046519	99	51	24,15	cyclictest	27	1	ktimers/1	22:53:41	1
4046518	99	51	45,4	cyclictest	4096016	-21	ssh	21:30:23	0
4046518	99	51	43,6	cyclictest	4051595	-21	kworker/u4:10+events_unbound	20:42:09	0
4046518	99	51	29,13	cyclictest	0	-21	swapper/0	22:15:22	0
4046519	99	50	44,4	cyclictest	22099	-21	/usr/sbin/munin	23:45:40	1
4046519	99	50	43,5	cyclictest	4149297	-21	/usr/sbin/munin	22:30:26	1
4046519	99	50	37,6	cyclictest	4054138	-21	kworker/u4:12+events_unbound	19:41:55	1
4046518	99	50	43,5	cyclictest	4168280	-21	kworker/u4:7+events_unbound	23:05:00	0
4046518	99	50	42,6	cyclictest	378	-21	dbus-daemon	21:42:18	0
4046518	99	50	34,13	cyclictest	53931	-21	kworker/u4:12+events_unbound	00:29:24	0
4046519	99	49	43,4	cyclictest	4141380	-21	kworker/u4:8+events_unbound	22:26:47	1
4046519	99	49	41,6	cyclictest	4075954	-21	systemd	21:02:11	1
4046519	99	49	41,6	cyclictest	4075954	-21	systemd	21:02:10	1
4046519	99	49	40,7	cyclictest	4115660	-21	kworker/u4:8+events_unbound	21:57:14	1
4046519	99	49	39,8	cyclictest	4093102	-21	sh	21:26:53	1
4046519	99	49	39,7	cyclictest	4142207	-21	systemd	22:22:22	1
4046519	99	49	28,6	cyclictest	17	1	rcu_preempt	23:20:37	1
4046518	99	49	42,5	cyclictest	4141380	-21	kworker/u4:8+events_unbound	22:37:27	0
4046518	99	49	37,8	cyclictest	4102138	-21	kworker/u4:11-writeback	21:45:38	0
4046518	99	49	34,9	cyclictest	4057993	-21	modprobe	19:55:00	0
4046519	99	48	41,5	cyclictest	4136246	-21	ntp_states	22:15:38	1
4046518	99	48	38,7	cyclictest	4127463	-21	/usr/sbin/munin	22:05:40	0
4046518	99	48	24,22	cyclictest	4072559	-21	fschecks_count	20:50:20	0
4046519	99	47	39,6	cyclictest	4068195	-21	systemd	20:32:07	1
4046519	99	47	39,5	cyclictest	4057956	-21	/usr/sbin/munin	19:50:38	1
4046519	99	47	36,7	cyclictest	12917	-21	ntp_states	23:35:37	1
4046519	99	47	23,16	cyclictest	0	-21	swapper/1	21:35:31	1
4046518	99	47	40,5	cyclictest	4102134	-21	kworker/u4:1+events_unbound	21:52:21	0
4046518	99	47	40,5	cyclictest	4053633	-21	sshd	19:35:28	0
4046518	99	47	39,6	cyclictest	4068206	-21	kworker/u4:9+events_unbound	21:02:11	0
4046518	99	47	39,6	cyclictest	4068206	-21	kworker/u4:9+events_unbound	21:02:11	0
4046518	99	47	39,6	cyclictest	4049571	-21	fschecks_time	19:20:20	0
4046518	99	47	39,5	cyclictest	4091558	-21	/usr/sbin/munin	21:25:22	0
4046518	99	47	38,7	cyclictest	4054627	-21	fschecks_count	19:40:33	0
4046518	99	47	37,5	cyclictest	4190676	-21	kworker/u4:5-rpciod	23:25:20	0
4046518	99	47	37,5	cyclictest	4190676	-21	kworker/u4:5-rpciod	23:25:20	0
4046518	99	47	32,11	cyclictest	0	-21	swapper/0	22:56:07	0
4046519	99	46	8,31	cyclictest	4096238	-21	ssh	21:30:31	1
4046519	99	46	39,5	cyclictest	4184421	-21	uname	23:10:23	1
4046519	99	46	39,5	cyclictest	4175226	-21	wget	23:00:16	1
4046519	99	46	36,7	cyclictest	4155489	-21	kworker/u4:3-rpciod	22:50:00	1
4046519	99	46	36,7	cyclictest	4068204	-21	kworker/u4:5+events_unbound	21:17:17	1
4046519	99	46	35,7	cyclictest	0	-21	swapper/1	22:35:27	1
4046519	99	46	20,8	cyclictest	0	-21	swapper/1	00:30:18	1
4046518	99	46	39,5	cyclictest	4149580	-21	open_inodes	22:30:39	0
4046518	99	46	39,5	cyclictest	4100196	-21	grep	21:35:22	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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