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 Mon Jun 01, 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
3966327	99	122	111,5	cyclictest	3990645	-21	kworker/u4:3+events_unbound	20:56:59	0
3966328	99	96	89,5	cyclictest	4135924	-21	kworker/u4:2+events_unbound	00:08:09	1
3966328	99	91	84,5	cyclictest	4074288	-21	kworker/u4:9+events_unbound	22:37:20	1
3966328	99	87	80,5	cyclictest	53	-21	kswapd0	22:10:00	1
3966328	99	87	79,6	cyclictest	4140408	-21	kworker/u4:9+events_unbound	00:02:28	1
3966328	99	86	79,5	cyclictest	3955114	-21	kworker/u4:13+events_unbound	19:10:00	1
3966328	99	86	77,7	cyclictest	3972673	-21	kworker/u4:5+events_unbound	19:55:01	1
3966328	99	85	77,6	cyclictest	4173974	-21	kworker/u4:11+events_unbound	00:33:45	1
3966327	99	84	2,29	cyclictest	4147704	-21	ssh	00:00:30	0
3966328	99	83	75,6	cyclictest	3999980	-21	kworker/u4:2+events_unbound	21:32:08	1
3966328	99	82	75,5	cyclictest	4149278	-21	kworker/u4:8+events_unbound	00:28:43	1
3966327	99	82	70,9	cyclictest	53	-21	kswapd0	21:45:08	0
3966328	99	81	74,5	cyclictest	4092101	-21	kworker/u4:10+events_unbound	22:57:25	1
3966328	99	80	73,5	cyclictest	4109936	-21	kworker/u4:0+events_unbound	23:37:32	1
3966328	99	79	71,6	cyclictest	4030993	-21	kworker/u4:3+events_unbound	21:57:14	1
3966328	99	79	71,6	cyclictest	3971391	-21	kworker/u4:14+events_unbound	19:35:01	1
3966327	99	79	70,6	cyclictest	53	-21	kswapd0	23:45:00	0
3966328	99	76	67,5	cyclictest	3971402	-21	kworker/u4:15+events_unbound	20:00:01	1
3966328	99	75	67,6	cyclictest	3977767	-21	kworker/u4:7+events_unbound	21:12:02	1
3966328	99	73	50,16	cyclictest	53	-21	kswapd0	21:45:09	1
3966327	99	73	60,10	cyclictest	4100978	-21	sh	23:06:58	0
3966327	99	73	60,10	cyclictest	4100978	-21	sh	23:06:58	0
3966327	99	72	45,23	cyclictest	53	-21	kswapd0	23:55:10	0
3966327	99	71	61,7	cyclictest	3999980	-21	kworker/u4:2+events_unbound	21:17:03	0
3966327	99	71	57,9	cyclictest	4060248	-21	ntpq	22:20:34	0
3966328	99	66	59,5	cyclictest	3955114	-21	kworker/u4:13+events_unbound	20:25:02	1
3966327	99	66	56,5	cyclictest	4120995	-21	grep	23:30:19	0
3966327	99	65	39,16	cyclictest	53	-21	kswapd0	23:45:11	0
3966328	99	64	57,5	cyclictest	3907901	-21	kworker/u4:4+events_unbound	19:25:00	1
3966328	99	64	43,15	cyclictest	0	-21	swapper/1	21:15:14	1
3966327	99	64	56,5	cyclictest	4105495	-21	kworker/u4:2+events_unbound	23:15:00	0
3966327	99	64	49,13	cyclictest	4079326	-21	ssh	22:42:21	0
3966328	99	61	52,5	cyclictest	3982882	-21	kworker/u4:12+events_unbound	20:35:01	1
3966328	99	61	3,54	cyclictest	3986194	-21	sshd	20:25:26	1
3966328	99	60	53,5	cyclictest	53	-21	kswapd0	22:20:00	1
3966328	99	60	52,6	cyclictest	53	-21	kswapd0	23:20:00	1
3966327	99	60	40,17	cyclictest	3989298	-21	apt-get	20:40:06	0
3966327	99	60	17,19	cyclictest	3966304	-21	munin-run	19:10:00	0
3966327	99	58	38,18	cyclictest	378	-21	dbus-daemon	23:37:31	0
3966327	99	58	30,6	cyclictest	14	-21	ksoftirqd/0	21:30:35	0
3966328	99	57	47,7	cyclictest	317	-21	systemd-journal	22:47:22	1
3966328	99	57	44,7	cyclictest	0	-21	swapper/1	19:15:38	1
3966327	99	57	50,5	cyclictest	3967543	-21	kworker/u4:0+events_unbound	19:30:00	0
3966327	99	57	47,7	cyclictest	4044347	-21	kworker/u4:5-rpciod	22:10:38	0
3966327	99	57	1,43	cyclictest	3998212	-21	ssh	21:10:32	0
3966328	99	56	49,5	cyclictest	4030994	-21	kworker/u4:4+events_unbound	21:52:11	1
3966327	99	56	49,5	cyclictest	3949998	-21	kworker/u4:11+events_unbound	19:50:04	0
3966328	99	55	48,5	cyclictest	4004469	-21	kworker/u4:7+events_unbound	21:35:02	1
3966328	99	55	41,4	cyclictest	3971391	-21	kworker/u4:14+events_unbound	20:50:01	1
3966327	99	55	49,5	cyclictest	3990645	-21	kworker/u4:3+events_unbound	20:50:03	0
3966327	99	55	42,7	cyclictest	3967572	-21	kworker/u4:1	19:15:00	0
3966327	99	55	27,22	cyclictest	4120370	-21	modprobe	23:30:00	0
3966327	99	55	27,22	cyclictest	4120370	-21	modprobe	23:30:00	0
3966327	99	55	1,17	cyclictest	4038153	-21	ntpq	21:55:29	0
3966328	99	54	47,5	cyclictest	4140406	-21	kworker/u4:7+events_unbound	23:55:14	1
3966328	99	54	46,6	cyclictest	4135925	-21	kworker/u4:5+events_unbound	23:47:01	1
3966328	99	54	2,38	cyclictest	4099642	-21	ssh	23:05:31	1
3966328	99	54	2,38	cyclictest	4099642	-21	ssh	23:05:31	1
3966327	99	54	46,5	cyclictest	4105498	-21	kworker/u4:5+events_unbound	23:17:27	0
3966327	99	54	43,8	cyclictest	0	-21	swapper/0	21:25:12	0
3966327	99	54	32,18	cyclictest	3981629	-21	modprobe	20:10:00	0
3966328	99	53	46,5	cyclictest	4077996	-21	wc	22:40:38	1
3966328	99	52	46,5	cyclictest	4113745	-21	kworker/u4:7+events_unbound	23:32:59	1
3966328	99	52	45,5	cyclictest	4044347	-21	kworker/u4:5+events_unbound	22:10:03	1
3966327	99	52	45,5	cyclictest	4082332	-21	mailstats	22:45:37	0
3966327	99	52	40,10	cyclictest	4159233	-21	fschecks_count	00:15:22	0
3966328	99	51	43,6	cyclictest	3995636	-21	timerandwakeup	21:00:37	1
3966328	99	51	40,8	cyclictest	4164368	-21	switchtime	00:20:42	1
3966328	99	51	38,5	cyclictest	4074945	-21	kworker/u4:13+events_unbound	23:02:26	1
3966328	99	51	34,6	cyclictest	4160809	-21	kworker/u4:5+events_unbound	00:17:00	1
3966327	99	51	44,5	cyclictest	4163926	-21	/usr/sbin/munin	00:20:26	0
3966327	99	51	43,6	cyclictest	4180292	-21	ssh	00:40:00	0
3966327	99	51	40,9	cyclictest	4094800	-21	fschecks_count	23:00:20	0
3966328	99	50	44,4	cyclictest	4006536	-21	cut	21:20:16	1
3966328	99	50	43,5	cyclictest	3991907	-21	kworker/u4:6+events_unbound	21:27:08	1
3966328	99	50	35,5	cyclictest	4135923	-21	kworker/u4:0+events_unbound	23:53:45	1
3966327	99	50	44,4	cyclictest	3971402	-21	kworker/u4:15+events_unbound	20:38:00	0
3966327	99	50	26,21	cyclictest	19	1	rcuc/0	00:25:41	0
3966328	99	49	34,7	cyclictest	4105498	-21	kworker/u4:5+events_unbound	23:28:46	1
3966328	99	49	34,7	cyclictest	4105498	-21	kworker/u4:5+events_unbound	23:28:46	1
3966327	99	49	42,5	cyclictest	4054926	-21	/usr/sbin/munin	22:15:11	0
3966327	99	49	41,5	cyclictest	0	-21	swapper/0	21:20:34	0
3966327	99	49	40,7	cyclictest	3974018	-21	latency_hist	19:40:01	0
3966327	99	49	40,7	cyclictest	3974018	-21	latency_hist	19:40:01	0
3966327	99	49	29,18	cyclictest	4023892	-21	sendmail	21:40:01	0
3966327	99	49	28,18	cyclictest	0	-21	swapper/0	21:50:19	0
3966327	99	49	18,19	cyclictest	4154909	-21	fschecks_time	00:10:15	0
3966328	99	48	41,5	cyclictest	4041976	-21	aten_r7power_po	22:00:21	1
3966328	99	48	41,5	cyclictest	4041976	-21	aten_r7power_po	22:00:20	1
3966328	99	48	40,6	cyclictest	4105498	-21	kworker/u4:5+events_unbound	23:20:03	1
3966327	99	48	42,4	cyclictest	3965056	-21	kworker/u4:5+events_unbound	19:22:03	0
3966327	99	48	41,5	cyclictest	3967543	-21	kworker/u4:0+events_unbound	20:01:45	0
3966327	99	48	40,5	cyclictest	4088113	-21	systemd	22:52:24	0
3966327	99	48	30,16	cyclictest	3979054	-21	cron	20:00:00	0
3966328	99	47	41,4	cyclictest	4064900	-21	cat	22:25:40	1
3966328	99	47	40,5	cyclictest	4129704	-21	df_abs	23:40:18	1
3966328	99	47	39,6	cyclictest	3975228	-21	systemd	19:41:44	1
3966328	99	47	29,8	cyclictest	3972672	-21	kworker/u4:3+events_unbound	19:45:24	1
3966327	99	47	40,5	cyclictest	4047462	-21	sed	22:05:43	0
3966327	99	47	39,6	cyclictest	4139417	-21	/usr/sbin/munin	23:50:40	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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