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 Sat Mar 28, 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
3352499	99	103	90,8	cyclictest	3466421	-21	kworker/u4:5+events_unbound	11:01:02	0
3352499	99	96	45,9	cyclictest	3548136	-21	modprobe	12:15:00	0
3352499	99	91	84,5	cyclictest	3430887	-21	kworker/u4:4+events_unbound	10:05:51	0
3352499	99	89	80,6	cyclictest	3506126	-21	kworker/u4:2+events_unbound	11:41:09	0
3352499	99	85	67,13	cyclictest	53	-21	kswapd0	09:50:10	0
3352499	99	82	73,7	cyclictest	3510555	-21	kworker/u4:7+events_unbound	11:36:08	0
3352499	99	80	73,5	cyclictest	3375615	-21	kworker/u4:3+events_unbound	09:25:46	0
3352499	99	80	72,6	cyclictest	3426318	-21	kworker/u4:13+events_unbound	10:10:52	0
3352499	99	80	72,6	cyclictest	3426318	-21	kworker/u4:13+events_unbound	10:10:52	0
3352500	99	78	65,6	cyclictest	3352435	-21	kworker/u4:4+events_unbound	08:10:02	1
3352499	99	77	69,6	cyclictest	3524240	-21	kworker/u4:17+events_unbound	11:51:11	0
3352499	99	77	47,6	cyclictest	53	-21	kswapd0	12:20:07	0
3352500	99	76	58,9	cyclictest	0	-21	swapper/1	09:50:25	1
3352499	99	75	71,3	cyclictest	3443812	-21	kworker/u4:1+events_unbound	10:50:59	0
3352499	99	75	71,3	cyclictest	3443812	-21	kworker/u4:1+events_unbound	10:50:59	0
3352499	99	75	68,5	cyclictest	3501704	-21	kworker/u4:15+events_unbound	11:26:07	0
3352499	99	75	3,32	cyclictest	3401787	-21	apt-get	09:30:18	0
3352499	99	72	65,5	cyclictest	3443812	-21	kworker/u4:1+events_unbound	11:21:06	0
3352499	99	72	64,5	cyclictest	3376914	-21	kworker/u4:8+events_unbound	08:45:01	0
3352499	99	72	63,6	cyclictest	3457355	-21	kworker/u4:2+events_unbound	10:40:57	0
3352500	99	71	64,5	cyclictest	3339936	-21	kworker/u4:10+events_unbound	07:45:02	1
3352499	99	71	55,10	cyclictest	3551492	-21	kthreadd	12:18:18	0
3352500	99	70	58,10	cyclictest	3438711	-21	systemd	10:10:51	1
3352500	99	70	58,10	cyclictest	3438711	-21	systemd	10:10:51	1
3352500	99	67	57,8	cyclictest	3362766	-21	kworker/u4:1+events_unbound	07:50:22	1
3352499	99	66	23,32	cyclictest	3352498	-21	kworker/u4:1	07:10:01	0
3352499	99	65	58,5	cyclictest	3408323	-21	kworker/u4:6+events_unbound	09:40:49	0
3352500	99	63	56,5	cyclictest	3399274	-21	kworker/u4:2+events_unbound	09:30:47	1
3352500	99	61	54,5	cyclictest	3352435	-21	kworker/u4:4+events_unbound	07:20:03	1
3352499	99	61	45,5	cyclictest	3403825	-21	kworker/u4:4+events_unbound	09:35:48	0
3352499	99	60	53,5	cyclictest	3374346	-21	kworker/u4:5+events_unbound	08:45:37	0
3352500	99	59	50,6	cyclictest	3544889	-21	/usr/sbin/munin	12:10:35	1
3352500	99	59	45,10	cyclictest	3469525	-21	xargs	10:45:38	1
3352499	99	59	53,4	cyclictest	3358845	-21	kworker/u4:15+events_unbound	08:17:00	0
3352500	99	58	47,8	cyclictest	3356306	-21	kworker/u4:14+events_unbound	07:35:13	1
3352499	99	58	51,5	cyclictest	3358844	-21	kworker/u4:12+events_unbound	07:40:13	0
3352499	99	58	50,6	cyclictest	3532625	-21	kworker/u4:4+events_unbound	12:01:13	0
3352500	99	57	48,7	cyclictest	3362766	-21	kworker/u4:1+events_unbound	08:50:40	1
3352500	99	57	47,8	cyclictest	3483800	-21	kworker/u4:14-rpciod	11:10:01	1
3352499	99	57	30,15	cyclictest	3366628	-21	apt-get	08:05:08	0
3352500	99	56	46,8	cyclictest	0	-21	swapper/1	09:20:35	1
3352500	99	56	42,11	cyclictest	0	-21	swapper/1	10:05:31	1
3352499	99	56	48,6	cyclictest	3510552	-21	kworker/u4:4+events_unbound	11:32:41	0
3352499	99	56	47,6	cyclictest	3366031	-21	systemd	08:00:22	0
3352500	99	55	48,5	cyclictest	1	-21	systemd	12:21:14	1
3352500	99	55	42,10	cyclictest	3371823	-21	modprobe	08:25:00	1
3352500	99	55	41,11	cyclictest	3355059	-21	tr	07:20:00	1
3352500	99	55	17,28	cyclictest	0	-21	swapper/1	11:10:39	1
3352499	99	55	49,4	cyclictest	3541211	-21	sshd	12:06:13	0
3352499	99	55	47,6	cyclictest	3569154	-21	ssh	12:38:18	0
3352499	99	55	47,6	cyclictest	3486843	-21	/usr/sbin/munin	11:05:26	0
3352499	99	55	45,8	cyclictest	53	-21	kswapd0	10:35:11	0
3352499	99	55	22,21	cyclictest	0	-21	swapper/0	08:55:09	0
3352500	99	54	45,5	cyclictest	0	-21	swapper/1	11:45:40	1
3352500	99	54	40,7	cyclictest	3352434	-21	kworker/u4:3+events_unbound	07:33:41	1
3352499	99	54	47,5	cyclictest	3524240	-21	kworker/u4:17+events_unbound	11:56:41	0
3352499	99	54	46,6	cyclictest	3443812	-21	kworker/u4:1+events_unbound	11:11:07	0
3352499	99	54	45,7	cyclictest	3495704	-21	ntpq	11:15:30	0
3352500	99	53	5,34	cyclictest	3406865	-21	ssh	09:35:25	1
3352500	99	53	37,6	cyclictest	3362766	-21	kworker/u4:1+events_unbound	08:37:01	1
3352499	99	53	42,8	cyclictest	3447412	-21	sh	10:20:41	0
3352500	99	52	46,4	cyclictest	3385092	-21	systemd	09:10:42	1
3352500	99	52	45,5	cyclictest	3566374	-21	/usr/sbin/munin	12:35:18	1
3352500	99	52	45,5	cyclictest	3503916	-21	aten_r7power_po	11:25:16	1
3352500	99	52	43,6	cyclictest	3552666	-21	sh	12:20:01	1
3352500	99	52	35,14	cyclictest	53	-21	kswapd0	11:40:18	1
3352499	99	52	45,5	cyclictest	3416470	-21	sshd	09:45:49	0
3352500	99	51	43,6	cyclictest	3452114	-21	ssh	10:25:53	1
3352500	99	51	37,6	cyclictest	3361493	-21	kworker/u4:0+events_unbound	08:41:03	1
3352499	99	51	42,7	cyclictest	378	-21	dbus-daemon	08:20:31	0
3352499	99	51	31,17	cyclictest	3365314	-21	cron	08:00:00	0
3352500	99	50	43,5	cyclictest	3526346	-21	fschecks_count	11:50:18	1
3352500	99	50	40,8	cyclictest	3373529	-21	tune2fs	08:30:20	1
3352500	99	50	17,20	cyclictest	0	-21	swapper/1	11:00:37	1
3352499	99	50	43,4	cyclictest	3561910	-21	cpu	12:30:17	0
3352499	99	50	43,4	cyclictest	3561910	-21	cpu	12:30:17	0
3352499	99	50	27,19	cyclictest	3356306	-21	kworker/u4:14-rpciod	07:45:01	0
3352500	99	49	44,4	cyclictest	3475462	-21	kworker/u4:6+events_unbound	10:54:42	1
3352500	99	49	44,4	cyclictest	3475462	-21	kworker/u4:6+events_unbound	10:54:42	1
3352500	99	49	43,4	cyclictest	3558320	-21	sendmail_mailqu	12:25:37	1
3352500	99	49	41,6	cyclictest	3499354	-21	/usr/sbin/munin	11:20:22	1
3352500	99	49	40,5	cyclictest	3465089	-21	/usr/sbin/munin	10:40:39	1
3352499	99	49	43,4	cyclictest	3430885	-21	kworker/u4:1+events_unbound	10:05:01	0
3352499	99	49	40,7	cyclictest	3355212	-21	systemd	07:20:09	0
3352499	99	49	38,7	cyclictest	53	-21	kswapd0	11:45:15	0
3352499	99	49	29,17	cyclictest	0	-21	swapper/0	10:15:23	0
3352500	99	48	38,7	cyclictest	3514456	-21	kworker/u4:10-rpciod	11:55:15	1
3352499	99	48	42,4	cyclictest	3435412	-21	kworker/u4:7+events_unbound	10:25:15	0
3352499	99	48	41,5	cyclictest	0	-21	swapper/0	08:55:00	0
3352499	99	48	38,8	cyclictest	3363281	-21	systemd	07:50:20	0
3352500	99	47	41,4	cyclictest	3411587	-21	processes	09:40:37	1
3352500	99	47	40,5	cyclictest	3355011	-21	kworker/u4:13+events_unbound	07:41:00	1
3352499	99	47	36,8	cyclictest	0	-21	swapper/0	10:45:37	0
3352500	99	46	40,5	cyclictest	3355011	-21	kworker/u4:13+events_unbound	08:27:02	1
3352500	99	46	40,5	cyclictest	3355011	-21	kworker/u4:13+events_unbound	08:27:02	1
3352500	99	46	40,4	cyclictest	0	-21	swapper/1	09:15:13	1
3352500	99	46	39,5	cyclictest	3447545	-21	who	10:20:44	1
3352500	99	46	39,5	cyclictest	3381902	-21	timerandwakeup	09:00:37	1
3352500	99	46	37,7	cyclictest	378	-21	dbus-daemon	10:15:52	1
3352500	99	46	36,8	cyclictest	3398193	-21	processes	09:25:33	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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