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 Thu Apr 16, 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
3608036	99	118	87,19	cyclictest	3677457	-21	kworker/u4:2+events_unbound	22:05:19	0
3608036	99	118	87,19	cyclictest	3677457	-21	kworker/u4:2+events_unbound	22:05:19	0
3608036	99	111	103,6	cyclictest	3614381	-21	kworker/u4:15+events_unbound	19:50:01	0
3608037	99	106	87,7	cyclictest	3783368	-21	kworker/u4:6+events_unbound	23:52:14	1
3608036	99	99	82,6	cyclictest	3659262	-21	kworker/u4:16+events_unbound	21:50:18	0
3608036	99	97	89,5	cyclictest	3699318	-21	kworker/u4:13+events_unbound	22:25:22	0
3608036	99	93	86,5	cyclictest	3659262	-21	kworker/u4:16+events_unbound	21:40:18	0
3608036	99	90	72,5	cyclictest	3677457	-21	kworker/u4:2+events_unbound	22:20:24	0
3608037	99	87	80,5	cyclictest	3677458	-21	kworker/u4:3+events_unbound	22:10:20	1
3608037	99	87	79,6	cyclictest	3618220	-21	kworker/u4:17+events_unbound	20:00:04	1
3608037	99	87	78,7	cyclictest	3603104	-21	kworker/u4:0+events_unbound	19:24:56	1
3608037	99	84	76,5	cyclictest	3610527	-21	kworker/u4:7+events_unbound	20:10:05	1
3608037	99	83	74,6	cyclictest	3627259	-21	kworker/u4:3+events_unbound	20:25:08	1
3608037	99	82	74,6	cyclictest	3410745	-21	kworker/u4:6+events_unbound	19:14:54	1
3608036	99	82	73,6	cyclictest	3787823	-21	kworker/u4:8+events_unbound	00:08:22	0
3608036	99	81	65,6	cyclictest	3787826	-21	kworker/u4:11+events_unbound	00:23:23	0
3608036	99	81	65,5	cyclictest	3628532	-21	kworker/u4:0+events_unbound	20:40:11	0
3608036	99	80	72,6	cyclictest	3726329	-21	kworker/u4:16+events_unbound	22:50:29	0
3608036	99	80	4,7	cyclictest	3608035	-21	modprobe	19:10:00	0
3608037	99	77	70,5	cyclictest	3613109	-21	kworker/u4:8+events_unbound	20:05:06	1
3608037	99	76	69,5	cyclictest	3616949	-21	kworker/u4:1+events_unbound	20:15:07	1
3608036	99	76	68,6	cyclictest	3712825	-21	kworker/u4:3+events_unbound	22:40:27	0
3608037	99	74	67,5	cyclictest	3628532	-21	kworker/u4:0+events_unbound	20:30:09	1
3608036	99	73	66,5	cyclictest	3757104	-21	kworker/u4:14+events_unbound	23:25:33	0
3608036	99	73	56,5	cyclictest	3752587	-21	kworker/u4:9+events_unbound	23:35:38	0
3608037	99	72	62,7	cyclictest	3734659	-21	kworker/u4:1+events_unbound	23:05:31	1
3608036	99	71	49,20	cyclictest	3638751	-21	kworker/u4:15+xprtiod	21:45:13	0
3608036	99	70	53,6	cyclictest	3822955	-21	kworker/u4:8+events_unbound	00:38:26	0
3608037	99	69	62,5	cyclictest	3603106	-21	kworker/u4:2+events_unbound	19:29:58	1
3608036	99	67	47,6	cyclictest	3752587	-21	kworker/u4:9+events_unbound	23:20:35	0
3608036	99	66	58,6	cyclictest	3774440	-21	kworker/u4:4+events_unbound	23:46:44	0
3608036	99	64	51,9	cyclictest	53	-21	kswapd0	23:15:10	0
3608037	99	63	56,5	cyclictest	3787826	-21	kworker/u4:11+events_unbound	00:23:25	1
3608036	99	63	55,6	cyclictest	3659262	-21	kworker/u4:16+events_unbound	21:35:17	0
3608036	99	61	53,6	cyclictest	3818496	-21	kworker/u4:16+events_unbound	00:33:25	0
3608037	99	58	52,4	cyclictest	3732890	-21	fschecks_count	22:55:19	1
3608037	99	58	47,9	cyclictest	3631276	-21	systemd	20:40:09	1
3608037	99	58	42,11	cyclictest	3638751	-21	kworker/u4:15-nfsiod	21:45:20	1
3608036	99	58	26,29	cyclictest	53	-21	kswapd0	22:45:08	0
3608037	99	57	51,4	cyclictest	27	1	ktimers/1	21:36:59	1
3608037	99	57	48,7	cyclictest	53	-21	kswapd0	23:15:09	1
3608036	99	57	44,6	cyclictest	3603108	-21	kworker/u4:4+events_unbound	19:40:00	0
3608036	99	57	39,16	cyclictest	3812460	-21	gltestperf	00:25:20	0
3608037	99	56	50,5	cyclictest	3616950	-21	kworker/u4:12+events_unbound	20:20:02	1
3608037	99	56	50,5	cyclictest	3616950	-21	kworker/u4:12+events_unbound	20:20:02	1
3608037	99	56	47,6	cyclictest	3745970	-21	aten_r7power_po	23:10:15	1
3608037	99	56	40,7	cyclictest	3616950	-21	kworker/u4:12+events_unbound	20:48:01	1
3608036	99	56	50,4	cyclictest	3733543	-21	/usr/sbin/munin	22:55:37	0
3608037	99	55	6,32	cyclictest	3649016	-21	ssh	21:20:37	1
3608036	99	55	36,12	cyclictest	53	-21	kswapd0	23:50:33	0
3608037	99	54	47,5	cyclictest	3787826	-21	kworker/u4:11+events_unbound	00:25:21	1
3608037	99	54	44,6	cyclictest	0	-21	swapper/1	21:55:30	1
3608036	99	54	41,9	cyclictest	3693083	-21	tune2fs	22:10:22	0
3608036	99	54	40,6	cyclictest	3594463	-21	kworker/u4:9+events_unbound	21:25:15	0
3608037	99	53	46,5	cyclictest	3624686	-21	kworker/u4:4+events_unbound	21:00:02	1
3608037	99	53	45,6	cyclictest	3618251	-21	apt-get	19:50:01	1
3608037	99	53	44,6	cyclictest	3653269	-21	sshd	21:25:25	1
3608036	99	53	47,4	cyclictest	3628533	-21	kworker/u4:5+events_unbound	21:30:16	0
3608036	99	53	46,5	cyclictest	3640095	-21	sendmail_mailqu	21:10:37	0
3608036	99	53	35,7	cyclictest	3672962	-21	kworker/u4:7+events_unbound	22:00:00	0
3608037	99	52	4,34	cyclictest	3701594	-21	ssh	22:20:13	1
3608037	99	52	2,34	cyclictest	3724457	-21	ssh	22:45:30	1
3608036	99	52	46,4	cyclictest	3608033	-21	cyclictest	00:00:31	0
3608036	99	52	45,5	cyclictest	3606761	-21	kworker/u4:1+events_unbound	19:19:54	0
3608036	99	52	31,18	cyclictest	0	-21	swapper/0	21:25:01	0
3608037	99	51	44,5	cyclictest	3773595	-21	unixbench_multi	23:40:38	1
3608037	99	51	43,6	cyclictest	3618221	-21	kworker/u4:18+events_unbound	21:17:01	1
3608036	99	51	43,5	cyclictest	0	-21	swapper/0	20:30:27	0
3608036	99	51	30,18	cyclictest	0	-21	swapper/0	21:15:29	0
3608037	99	50	44,4	cyclictest	27	1	ktimers/1	00:36:56	1
3608037	99	50	43,5	cyclictest	3787826	-21	kworker/u4:11+events_unbound	00:15:00	1
3608037	99	50	43,5	cyclictest	3710678	-21	/usr/sbin/munin	22:30:17	1
3608037	99	50	43,5	cyclictest	3675154	-21	basename	21:50:18	1
3608037	99	50	43,5	cyclictest	3624686	-21	kworker/u4:4+events_unbound	20:50:02	1
3608037	99	50	43,5	cyclictest	3624686	-21	kworker/u4:4+events_unbound	20:50:02	1
3608037	99	50	41,6	cyclictest	3706067	-21	aten_r7power_cu	22:25:14	1
3608037	99	50	40,7	cyclictest	3688286	-21	dpkg	22:05:11	1
3608037	99	50	40,7	cyclictest	3688286	-21	dpkg	22:05:11	1
3608037	99	50	40,7	cyclictest	0	-21	swapper/1	23:20:28	1
3608037	99	50	15,18	cyclictest	3684720	-21	sh	22:00:32	1
3608037	99	49	42,5	cyclictest	3614380	-21	kworker/u4:14+events_unbound	19:35:03	1
3608037	99	49	42,5	cyclictest	3609256	-21	kworker/u4:3+events_unbound	19:30:02	1
3608037	99	49	15,22	cyclictest	3697924	-21	ssh	22:15:32	1
3608037	99	49	15,22	cyclictest	3697924	-21	ssh	22:15:31	1
3608036	99	49	43,4	cyclictest	3410745	-21	kworker/u4:6+events_unbound	19:25:00	0
3608036	99	49	41,6	cyclictest	3697477	-21	fschecks_count	22:15:20	0
3608036	99	49	41,6	cyclictest	3697477	-21	fschecks_count	22:15:20	0
3608036	99	49	41,6	cyclictest	3633640	-21	kworker/u4:1+events_unbound	20:54:02	0
3608036	99	49	41,6	cyclictest	3633640	-21	kworker/u4:1+events_unbound	20:54:02	0
3608036	99	49	41,6	cyclictest	3618855	-21	fschecks_time	19:50:29	0
3608037	99	48	43,4	cyclictest	3712824	-21	kworker/u4:2+events_unbound	22:52:59	1
3608037	99	48	41,5	cyclictest	3785590	-21	cut	23:55:15	1
3608037	99	48	40,6	cyclictest	3636180	-21	kworker/u4:8+events_unbound	21:07:01	1
3608037	99	48	40,6	cyclictest	3631107	-21	apt	20:40:00	1
3608037	99	48	32,8	cyclictest	17	1	rcu_preempt	23:30:31	1
3608037	99	48	32,8	cyclictest	17	1	rcu_preempt	23:30:31	1
3608036	99	48	41,5	cyclictest	3625206	-21	fschecks_time	20:15:19	0
3608036	99	48	35,11	cyclictest	3613668	-21	gltestperf	19:30:19	0
3608037	99	47	39,6	cyclictest	3794890	-21	cat	00:05:20	1
3608037	99	47	39,5	cyclictest	3769926	-21	kworker/u4:10-xprtiod	23:45:26	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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