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 Mar 22, 2026 12:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3495417	99	106	99,5	cyclictest	3653101	-21	kworker/u4:17+events_unbound	11:35:12	1
3495416	99	94	87,5	cyclictest	3551371	-21	kworker/u4:6+events_unbound	09:49:52	0
3495417	99	91	80,7	cyclictest	3604800	-21	kworker/u4:0+events_unbound	11:10:08	1
3495417	99	89	82,5	cyclictest	3492906	-21	kworker/u4:4+events_unbound	08:29:38	1
3495417	99	88	81,4	cyclictest	3591369	-21	kworker/u4:9+events_unbound	10:45:04	1
3495416	99	83	76,5	cyclictest	3499301	-21	kworker/u4:20+events_unbound	07:39:31	0
3495416	99	82	51,23	cyclictest	53	-21	kswapd0	10:40:12	0
3495417	99	81	72,6	cyclictest	3492906	-21	kworker/u4:4+events_unbound	07:49:33	1
3495416	99	81	75,4	cyclictest	3519757	-21	kworker/u4:2+events_unbound	08:59:45	0
3495416	99	81	74,5	cyclictest	3514634	-21	kworker/u4:7+events_unbound	09:09:48	0
3495416	99	81	74,5	cyclictest	3492906	-21	kworker/u4:4+events_unbound	08:19:38	0
3495416	99	75	10,17	cyclictest	3619892	-21	munin-node	10:55:10	0
3495416	99	74	55,14	cyclictest	3551371	-21	kworker/u4:6+xprtiod	10:10:09	0
3495417	99	71	64,5	cyclictest	3481519	-21	kworker/u4:3+events_unbound	07:15:01	1
3495417	99	70	62,6	cyclictest	53	-21	kswapd0	10:10:10	1
3495417	99	70	60,8	cyclictest	3604800	-21	kworker/u4:0+events_unbound	10:40:02	1
3495417	99	68	53,9	cyclictest	3522408	-21	modprobe	08:55:01	1
3495416	99	68	60,5	cyclictest	53	-21	kswapd0	11:35:12	0
3495417	99	65	51,5	cyclictest	3600311	-21	kworker/u4:13+events_unbound	10:55:04	1
3495416	99	65	55,7	cyclictest	0	-21	swapper/0	11:55:42	0
3495417	99	64	54,7	cyclictest	3675580	-21	kworker/u4:14+events_unbound	12:15:18	1
3495417	99	62	54,6	cyclictest	3680014	-21	kworker/u4:2+events_unbound	12:05:18	1
3495417	99	62	44,5	cyclictest	3524949	-21	kworker/u4:13+events_unbound	09:29:50	1
3495416	99	61	47,9	cyclictest	256	50	irq/23-42890000.ethernet	10:30:14	0
3495416	99	61	42,14	cyclictest	3651395	-21	fschecks_count	11:30:19	0
3495417	99	60	49,8	cyclictest	3661011	-21	timerandwakeup	11:40:37	1
3495417	99	60	41,5	cyclictest	3517186	-21	kworker/u4:3+events_unbound	08:39:40	1
3495417	99	59	47,9	cyclictest	3499303	-21	kworker/u4:22+events_unbound	07:55:24	1
3495417	99	58	51,5	cyclictest	3671086	-21	kworker/u4:8+events_unbound	11:55:15	1
3495416	99	57	52,3	cyclictest	0	-21	swapper/0	12:25:33	0
3495417	99	55	38,6	cyclictest	3509513	-21	kworker/u4:2+events_unbound	08:09:36	1
3495416	99	55	48,5	cyclictest	3625905	-21	kworker/u4:12+events_unbound	11:18:41	0
3495417	99	54	43,9	cyclictest	3626566	-21	kworker/u4:15+events_unbound	11:25:15	1
3495416	99	54	46,6	cyclictest	3625905	-21	kworker/u4:12+events_unbound	11:08:59	0
3495416	99	54	42,9	cyclictest	0	-21	swapper/0	11:40:11	0
3495417	99	53	46,4	cyclictest	3622044	-21	kworker/u4:1+events_unbound	11:05:01	1
3495417	99	53	46,4	cyclictest	3557850	-21	latency_hist	09:45:02	1
3495416	99	53	45,6	cyclictest	3509437	-21	unixbench_multi	08:00:38	0
3495416	99	53	43,8	cyclictest	3517649	-21	tune2fs	08:35:20	0
3495417	99	52	45,5	cyclictest	3629046	-21	df	11:05:18	1
3495417	99	52	45,5	cyclictest	3500575	-21	kworker/u4:24+events_unbound	07:29:31	1
3495417	99	52	44,6	cyclictest	3531449	-21	cut	09:15:19	1
3495417	99	52	43,7	cyclictest	3687190	-21	ssh	12:10:38	1
3495416	99	52	39,6	cyclictest	3499303	-21	kworker/u4:22+events_unbound	08:06:00	0
3495417	99	51	43,5	cyclictest	3666587	-21	kworker/u4:6+events_unbound	11:50:15	1
3495417	99	51	42,7	cyclictest	3539612	-21	systemd	09:24:48	1
3495417	99	51	41,7	cyclictest	3665607	-21	unixbench_multi	11:45:41	1
3495416	99	51	44,5	cyclictest	3708448	-21	cut	12:35:21	0
3495416	99	51	44,5	cyclictest	3484093	-21	kworker/u4:16+events_unbound	07:43:02	0
3495416	99	51	44,5	cyclictest	0	-21	swapper/0	09:10:11	0
3495416	99	51	43,6	cyclictest	3675579	-21	kworker/u4:13+events_unbound	12:15:00	0
3495416	99	51	42,6	cyclictest	3575897	-21	aten_r7power_cu	10:05:15	0
3495416	99	51	39,8	cyclictest	53	-21	kswapd0	11:55:01	0
3495416	99	51	31,18	cyclictest	0	-21	swapper/0	11:00:16	0
3495416	99	51	27,21	cyclictest	0	-21	swapper/0	12:15:29	0
3495417	99	50	43,5	cyclictest	3703779	-21	diskmemload	12:30:16	1
3495417	99	50	40,7	cyclictest	3653099	-21	ssh	11:31:46	1
3495417	99	50	36,4	cyclictest	3546810	-21	kworker/u4:11+events_unbound	10:04:54	1
3495416	99	50	8,7	cyclictest	15	1	ktimers/0	11:45:11	0
3495416	99	50	43,5	cyclictest	3643505	-21	/usr/sbin/munin	11:20:40	0
3495416	99	50	43,5	cyclictest	3542234	-21	kworker/u4:9+events_unbound	09:59:52	0
3495416	99	50	37,7	cyclictest	0	-21	swapper/0	10:20:29	0
3495416	99	50	28,19	cyclictest	3504905	-21	fschecks_time	07:45:21	0
3495417	99	49	42,5	cyclictest	3593221	-21	idleruntime-cro	10:25:01	1
3495417	99	49	41,6	cyclictest	3697089	-21	kworker/u4:3+events_unbound	12:23:59	1
3495417	99	49	41,6	cyclictest	3638476	-21	diskmemload	11:15:30	1
3495417	99	49	40,7	cyclictest	315	-21	systemd-journal	09:39:50	1
3495417	99	49	19,17	cyclictest	0	-21	swapper/1	07:40:32	1
3495416	99	49	41,6	cyclictest	3514640	-21	kworker/u4:15+events_unbound	08:48:41	0
3495416	99	48	41,5	cyclictest	3571457	-21	aten2__	10:00:14	0
3495416	99	48	40,5	cyclictest	3704517	-21	cat	12:30:32	0
3495416	99	48	38,8	cyclictest	3617541	-21	kworker/u4:8-rpciod	10:55:00	0
3495416	99	48	26,19	cyclictest	0	-21	swapper/0	12:20:18	0
3495417	99	47	41,4	cyclictest	3524949	-21	kworker/u4:13+events_unbound	09:30:41	1
3495417	99	47	40,5	cyclictest	3506926	-21	unixbench_singl	07:50:39	1
3495417	99	47	38,7	cyclictest	3563043	-21	/usr/sbin/munin	09:50:21	1
3495416	99	47	40,5	cyclictest	3682444	-21	expr	12:05:20	0
3495416	99	47	40,5	cyclictest	3536840	-21	unixbench_singl	09:20:38	0
3495416	99	47	28,16	cyclictest	3573439	-21	kworker/u4:3-rpciod	10:25:11	0
3495416	99	47	21,19	cyclictest	3602286	-21	apt-get	10:35:12	0
3495416	99	47	16,9	cyclictest	17	1	rcu_preempt	09:33:05	0
3495417	99	46	40,4	cyclictest	3700206	-21	ntp_offset	12:25:36	1
3495417	99	46	38,6	cyclictest	3602929	-21	netstat	10:35:23	1
3495416	99	46	38,6	cyclictest	3499303	-21	kworker/u4:22+events_unbound	07:55:01	0
3495416	99	46	37,6	cyclictest	3535288	-21	sendmail	09:20:01	0
3495416	99	46	36,7	cyclictest	3537757	-21	kworker/u4:4-xprtiod	09:25:33	0
3495417	99	45	36,7	cyclictest	3598056	-21	cpu	10:30:16	1
3495417	99	45	35,7	cyclictest	3526985	-21	/usr/sbin/munin	09:10:19	1
3495417	99	45	33,8	cyclictest	0	-21	swapper/1	10:15:15	1
3495416	99	45	38,5	cyclictest	3495345	-21	kworker/u4:10+events_unbound	07:30:03	0
3495416	99	45	37,6	cyclictest	3600311	-21	kworker/u4:13+events_unbound	11:27:43	0
3495416	99	45	37,6	cyclictest	3584963	-21	fschecks_count	10:15:19	0
3495416	99	45	37,6	cyclictest	3519010	-21	fschecks_time	08:40:17	0
3495416	99	45	35,7	cyclictest	0	-21	swapper/0	09:35:11	0
3495416	99	45	17,6	cyclictest	17	1	rcu_preempt	09:54:34	0
3495417	99	44	37,5	cyclictest	3559348	-21	who	09:45:40	1
3495417	99	44	37,5	cyclictest	3495429	-21	apt-config	07:10:01	1
3495417	99	44	37,4	cyclictest	0	-21	swapper/1	12:00:18	1
3495417	99	44	36,6	cyclictest	3566952	-21	aten2__	09:55:14	1
3495417	99	44	36,5	cyclictest	3646465	-21	wc	11:25:02	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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