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 376 highest latencies:

System rack7slot2.osadl.org (updated Sun Mar 08, 2026 00:44:12)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3819959	99	120	112,6	cyclictest	3905665	-21	kworker/u4:4+events_unbound	22:12:59	1
3819957	99	109	85,20	cyclictest	54	-21	kswapd0	22:25:06	0
3819959	99	103	94,6	cyclictest	3910064	-21	kworker/u4:11+events_unbound	22:18:00	1
3819957	99	96	46,6	cyclictest	0	-21	swapper/0	20:30:41	0
3819959	99	92	84,6	cyclictest	3983225	-21	kworker/u4:0+events_unbound	23:58:20	1
3819959	99	92	78,5	cyclictest	3884330	-21	kworker/u4:9+events_unbound	21:47:55	1
3819959	99	89	80,7	cyclictest	3931373	-21	kworker/u4:12+events_unbound	22:53:08	1
3819959	99	83	76,5	cyclictest	3843150	-21	kworker/u4:12+events_unbound	21:22:48	1
3819957	99	83	74,6	cyclictest	3806087	-21	kworker/u4:0+events_unbound	20:57:44	0
3819957	99	81	37,17	cyclictest	54	-21	kswapd0	00:15:09	0
3819957	99	79	45,5	cyclictest	4028499	-21	aten_r7power_po	00:35:16	0
3819959	99	77	68,7	cyclictest	4017563	-21	kworker/u4:9+events_unbound	00:28:24	1
3819959	99	74	64,8	cyclictest	3953292	-21	kworker/u4:8+events_unbound	23:08:11	1
3819959	99	74	64,8	cyclictest	3953292	-21	kworker/u4:8+events_unbound	23:08:11	1
3819957	99	73	4,63	cyclictest	3994695	-21	ssh	23:55:29	0
3819959	99	70	54,6	cyclictest	3974479	-21	kworker/u4:6+events_unbound	23:33:15	1
3819959	99	67	58,7	cyclictest	3850824	-21	kworker/u4:19+events_unbound	21:12:45	1
3819959	99	67	58,7	cyclictest	3850824	-21	kworker/u4:19+events_unbound	21:12:45	1
3819959	99	67	58,6	cyclictest	3828859	-21	kworker/u4:13+events_unbound	21:05:00	1
3819959	99	64	54,6	cyclictest	0	-21	swapper/1	22:00:39	1
3819959	99	64	43,5	cyclictest	3866581	-21	kworker/u4:14+events_unbound	21:27:49	1
3819959	99	63	55,5	cyclictest	3845717	-21	kworker/u4:17+events_unbound	20:50:01	1
3819959	99	63	55,5	cyclictest	3845717	-21	kworker/u4:17+events_unbound	20:50:00	1
3819959	99	62	53,7	cyclictest	3826295	-21	kworker/u4:7+events_unbound	20:32:35	1
3819959	99	61	54,5	cyclictest	3957634	-21	kworker/u4:14+events_unbound	23:23:15	1
3819959	99	61	54,5	cyclictest	3957634	-21	kworker/u4:14+events_unbound	23:23:15	1
3819957	99	61	26,27	cyclictest	0	-21	swapper/0	22:45:10	0
3819959	99	59	48,9	cyclictest	4014118	-21	systemd	00:18:22	1
3819957	99	59	52,5	cyclictest	3999563	-21	grep	00:00:42	0
3819957	99	59	51,6	cyclictest	3923253	-21	kworker/u4:8+events_unbound	22:38:05	0
3819959	99	58	49,6	cyclictest	4026344	-21	kworker/u4:11+events_unbound	00:35:00	1
3819957	99	58	5,32	cyclictest	3955251	-21	rm	23:10:15	0
3819957	99	58	5,32	cyclictest	3955251	-21	rm	23:10:15	0
3819957	99	58	40,16	cyclictest	3855326	-21	latency_hist	21:15:01	0
3819957	99	58	40,16	cyclictest	3855326	-21	latency_hist	21:15:01	0
3819959	99	57	50,5	cyclictest	3850824	-21	kworker/u4:19+events_unbound	21:37:51	1
3819959	99	57	43,9	cyclictest	0	-21	swapper/1	22:25:19	1
3819959	99	56	48,6	cyclictest	4030662	-21	kworker/u4:5+events_unbound	00:39:59	1
3819959	99	56	48,5	cyclictest	3916357	-21	/usr/sbin/munin	22:25:12	1
3819957	99	56	49,5	cyclictest	3892479	-21	kworker/u4:14+events_unbound	21:57:55	0
3819957	99	56	47,6	cyclictest	3806087	-21	kworker/u4:0+events_unbound	20:52:42	0
3819957	99	56	45,8	cyclictest	3886348	-21	cut	21:50:17	0
3819959	99	55	49,4	cyclictest	3816245	-21	kworker/u4:2+events_unbound	20:55:01	1
3819959	99	55	47,6	cyclictest	3893233	-21	ssh	21:57:55	1
3819959	99	55	46,7	cyclictest	3923253	-21	kworker/u4:8+events_unbound	22:41:59	1
3819959	99	55	44,8	cyclictest	3991969	-21	kworker/u4:8+events_unbound	00:10:21	1
3819959	99	55	43,9	cyclictest	3755359	-21	kworker/u4:11+events_unbound	20:22:44	1
3819959	99	54	41,9	cyclictest	37	-21	kcompactd0	19:20:29	1
3819959	99	54	41,9	cyclictest	37	-21	kcompactd0	19:20:29	1
3819957	99	54	46,6	cyclictest	3819955	-21	cyclictest	23:29:08	0
3819957	99	54	41,8	cyclictest	0	-21	swapper/0	21:45:23	0
3819957	99	54	31,21	cyclictest	3921413	-21	netstat	22:30:23	0
3819957	99	54	21,24	cyclictest	255	50	irq/23-42890000.ethernet	20:05:11	0
3819959	99	53	46,5	cyclictest	3931374	-21	kworker/u4:13+events_unbound	22:45:15	1
3819959	99	53	39,9	cyclictest	0	-21	swapper/1	23:45:37	1
3819959	99	53	39,11	cyclictest	0	-21	swapper/1	23:25:14	1
3819957	99	53	45,6	cyclictest	3828859	-21	kworker/u4:13+events_unbound	21:02:43	0
3819957	99	53	45,5	cyclictest	3952127	-21	timerwakeupswit	23:05:41	0
3819957	99	53	45,5	cyclictest	3952127	-21	timerwakeupswit	23:05:41	0
3819959	99	52	44,6	cyclictest	3850824	-21	kworker/u4:19+events_unbound	21:17:46	1
3819959	99	52	4,41	cyclictest	3899186	-21	munin-node	22:05:11	1
3819959	99	52	41,8	cyclictest	3987609	-21	kworker/u4:3+events_unbound	00:00:37	1
3819957	99	52	44,6	cyclictest	3850824	-21	kworker/u4:19+events_unbound	21:21:43	0
3819957	99	52	42,8	cyclictest	3845721	-21	systemd	20:47:39	0
3819957	99	52	42,8	cyclictest	3845721	-21	systemd	20:47:39	0
3819959	99	51	42,6	cyclictest	3822120	-21	sendmail_mailqu	19:15:36	1
3819959	99	51	39,9	cyclictest	3830160	-21	cron	19:50:00	1
3819959	99	51	35,11	cyclictest	3831422	-21	modprobe	19:55:01	1
3819957	99	51	44,4	cyclictest	255	50	irq/23-42890000.ethernet	23:20:16	0
3819957	99	51	44,4	cyclictest	255	50	irq/23-42890000.ethernet	23:20:16	0
3819957	99	51	43,6	cyclictest	3918196	-21	sh	22:26:18	0
3819957	99	51	43,6	cyclictest	3866580	-21	kworker/u4:9+events_unbound	21:37:00	0
3819957	99	51	43,6	cyclictest	3827565	-21	kworker/u4:10+events_unbound	19:52:29	0
3819957	99	51	42,6	cyclictest	3944529	-21	kworker/u4:1+events_unbound	22:58:12	0
3819957	99	51	39,8	cyclictest	0	-21	swapper/0	23:03:51	0
3819959	99	50	40,7	cyclictest	3820041	-21	latency_hist	19:10:01	1
3819957	99	50	43,5	cyclictest	3816245	-21	kworker/u4:2+events_unbound	19:57:30	0
3819957	99	50	43,5	cyclictest	3816245	-21	kworker/u4:2+events_unbound	19:57:30	0
3819957	99	50	41,6	cyclictest	3875495	-21	kworker/u4:5+events_unbound	21:42:52	0
3819957	99	50	35,5	cyclictest	3991971	-21	kworker/u4:10+events_unbound	23:53:19	0
3819959	99	49	42,5	cyclictest	3944533	-21	kworker/u4:9+events_unbound	23:01:00	1
3819959	99	49	42,5	cyclictest	3806087	-21	kworker/u4:0+events_unbound	19:32:27	1
3819959	99	49	39,7	cyclictest	3887065	-21	diskmemload	21:50:36	1
3819959	99	49	39,7	cyclictest	3878678	-21	timerandwakeup	21:40:45	1
3819957	99	49	40,7	cyclictest	388	-21	dbus-daemon	21:27:47	0
3819957	99	49	40,6	cyclictest	3933500	-21	dpkg	22:45:03	0
3819957	99	49	40,6	cyclictest	3844449	-21	kworker/u4:16+events_unbound	20:42:39	0
3819957	99	49	39,7	cyclictest	4010841	-21	ssh	00:15:00	0
3819959	99	48	43,3	cyclictest	3987610	-21	kworker/u4:4+events_unbound	23:50:23	1
3819959	99	48	41,5	cyclictest	3983225	-21	kworker/u4:0+events_unbound	23:43:43	1
3819959	99	48	40,5	cyclictest	3944529	-21	kworker/u4:1+events_unbound	22:57:43	1
3819959	99	48	39,7	cyclictest	3816245	-21	kworker/u4:2-xprtiod	20:25:12	1
3819959	99	48	39,6	cyclictest	3832431	-21	switchtime	19:55:37	1
3819959	99	48	39,6	cyclictest	3832431	-21	switchtime	19:55:37	1
3819959	99	48	38,7	cyclictest	3834007	-21	idleruntime-cro	20:05:00	1
3819959	99	48	31,13	cyclictest	54	-21	kswapd0	00:05:33	1
3819959	99	48	30,7	cyclictest	3866581	-21	kworker/u4:14+events_unbound	21:31:11	1
3819957	99	48	41,5	cyclictest	3973404	-21	proc_pri	23:30:38	0
3819957	99	48	40,6	cyclictest	3908022	-21	df_abs	22:15:17	0
3819957	99	48	40,6	cyclictest	3592344	-21	kworker/u4:6+events_unbound	19:22:26	0
3819957	99	48	40,6	cyclictest	3592344	-21	kworker/u4:6+events_unbound	19:22:26	0
3819959	99	47	40,5	cyclictest	3901291	-21	kworker/u4:7+events_unbound	22:39:00	1
3819959	99	47	40,5	cyclictest	3834233	-21	/usr/sbin/munin	20:05:12	1
3819959	99	47	39,6	cyclictest	3944534	-21	kworker/u4:10+events_unbound	23:15:34	1
3819959	99	47	38,6	cyclictest	3827565	-21	kworker/u4:10+events_unbound	19:38:31	1
3819957	99	47	42,3	cyclictest	3841880	-21	kworker/u4:6+events_unbound	20:40:00	0
3819957	99	47	40,5	cyclictest	3900322	-21	/usr/sbin/munin	22:05:45	0
3819957	99	47	40,5	cyclictest	3895339	-21	gltestperf	22:00:23	0
3819957	99	47	40,5	cyclictest	3837786	-21	unixbench_multi	20:15:38	0
3819957	99	47	40,5	cyclictest	3819955	-21	cyclictest	21:16:15	0
3819957	99	47	39,6	cyclictest	3833164	-21	fschecks_count	20:00:19	0
3819957	99	47	37,7	cyclictest	3983225	-21	kworker/u4:0+rpciod	23:45:36	0
3819957	99	47	35,10	cyclictest	4024382	-21	df_abs	00:30:21	0
3819957	99	47	28,16	cyclictest	3818683	-21	kworker/u4:8+rpciod	19:35:16	0
3819959	99	46	38,5	cyclictest	3987609	-21	kworker/u4:3+events_unbound	00:25:00	1
3819959	99	46	36,7	cyclictest	3955202	-21	acpi	23:10:12	1
3819959	99	46	36,7	cyclictest	3955202	-21	acpi	23:10:12	1
3819959	99	46	33,7	cyclictest	0	-21	swapper/1	23:35:18	1
3819957	99	46	39,5	cyclictest	4021957	-21	kworker/u4:2+events_unbound	00:30:05	0
3819957	99	46	38,6	cyclictest	3963671	-21	latency_hist	23:20:02	0
3819959	99	45	36,7	cyclictest	3847533	-21	fschecks_time	20:55:20	1
3819959	99	45	34,8	cyclictest	0	-21	swapper/1	22:33:01	1
3819957	99	45	38,5	cyclictest	4016511	-21	/usr/sbin/munin	00:20:41	0
3819957	99	45	37,6	cyclictest	4003137	-21	kernelversion	00:05:22	0
3819957	99	45	37,5	cyclictest	3850452	-21	grep	21:05:36	0
3819957	99	45	34,7	cyclictest	3980762	-21	kworker/u4:12	23:40:00	0
3819957	99	45	27,16	cyclictest	3819955	-21	cyclictest	21:34:59	0
3819957	99	45	24,19	cyclictest	3839715	-21	fschecks_count	20:25:26	0
3819959	99	44	37,5	cyclictest	3832679	-21	kworker/u4:3+events_unbound	20:15:44	1
3819959	99	44	36,6	cyclictest	3850785	-21	unixbench_singl	21:05:39	1
3819957	99	44	37,5	cyclictest	3835843	-21	fschecks_time	20:10:19	0
3819957	99	44	26,16	cyclictest	3884325	-21	kworker/u4:0+rpciod	22:12:04	0
3819959	99	43	34,7	cyclictest	3820319	-21	df_abs	19:10:15	1
3819959	99	43	34,6	cyclictest	3836726	-21	latency_hist	20:15:01	1
3819959	99	43	33,7	cyclictest	3824149	-21	df_abs	19:25:16	1
3819959	99	43	32,8	cyclictest	0	-21	swapper/1	19:45:01	1
3819957	99	43	34,6	cyclictest	3820173	-21	aten_r7power_en	19:10:14	0
3819957	99	43	33,6	cyclictest	0	-21	swapper/0	22:50:21	0
3819957	99	42	34,6	cyclictest	3828116	-21	fschecks_time	19:40:19	0
3819957	99	42	34,6	cyclictest	3827565	-21	kworker/u4:10+events_unbound	19:47:29	0
3819957	99	42	34,6	cyclictest	3821434	-21	aten_r7power_cu	19:15:15	0
3819957	99	42	31,9	cyclictest	3824129	-21	cpu	19:25:16	0
3819957	99	42	11,16	cyclictest	3819932	-21	munin-run	19:10:00	0
3819957	99	41	35,4	cyclictest	3981640	-21	irqstats	23:40:22	0
3819957	99	41	32,6	cyclictest	3838217	-21	aten_r7power_vo	20:20:16	0
3819957	99	40	33,5	cyclictest	3825322	-21	aten_r7power_po	19:30:17	0
3819959	99	39	32,4	cyclictest	0	-21	swapper/1	20:40:11	1
3819959	99	38	29,6	cyclictest	0	-21	swapper/1	20:35:18	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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