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 Thu Sep 18, 2025 12:44:11)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3800876	99	135	112,6	cyclictest	3830534	-21	kworker/u4:2+events_unbound	09:20:22	1
3800876	99	122	109,7	cyclictest	3755903	-21	kworker/u4:11+events_unbound	09:11:08	1
3800874	99	112	97,5	cyclictest	3920226	-21	kworker/u4:2+events_unbound	11:25:55	0
3800874	99	109	101,6	cyclictest	3875305	-21	kworker/u4:0+events_unbound	10:50:44	0
3800874	99	108	100,6	cyclictest	3920852	-21	kworker/u4:6+events_unbound	11:16:27	0
3800874	99	107	100,5	cyclictest	3933744	-21	kworker/u4:9+events_unbound	11:20:54	0
3800874	99	107	100,5	cyclictest	3903738	-21	kworker/u4:12+events_unbound	10:46:21	0
3800874	99	102	94,6	cyclictest	3800802	-21	kworker/u4:2+events_unbound	08:10:09	0
3800874	99	101	94,5	cyclictest	3824099	-21	kworker/u4:8+events_unbound	09:01:07	0
3800874	99	99	91,6	cyclictest	3863755	-21	kworker/u4:15+events_unbound	10:06:17	0
3800874	99	98	90,5	cyclictest	3802098	-21	kworker/u4:3+events_unbound	08:00:38	0
3800874	99	97	90,5	cyclictest	3950272	-21	kworker/u4:6+events_unbound	11:41:29	0
3800874	99	97	89,5	cyclictest	3432542	-21	kworker/u4:4+events_unbound	07:34:47	0
3800876	99	96	88,5	cyclictest	3809909	-21	kworker/u4:7+events_unbound	08:35:16	1
3800874	99	95	88,5	cyclictest	3812462	-21	kworker/u4:1+events_unbound	07:54:59	0
3800876	99	91	81,7	cyclictest	3812462	-21	kworker/u4:1+events_unbound	07:55:37	1
3800876	99	90	83,5	cyclictest	3863755	-21	kworker/u4:15+events_unbound	10:15:37	1
3800876	99	90	4,31	cyclictest	3936324	-21	ssh	11:20:32	1
3800874	99	90	81,7	cyclictest	3953992	-21	kworker/u4:8+events_unbound	12:06:33	0
3800876	99	87	80,5	cyclictest	3815041	-21	kworker/u4:9+events_unbound	08:20:15	1
3800874	99	83	49,26	cyclictest	53	-21	kswapd0	09:45:11	0
3800876	99	82	69,10	cyclictest	3815041	-21	kworker/u4:9+events_unbound	09:05:20	1
3800874	99	82	66,7	cyclictest	3875306	-21	kworker/u4:1+events_unbound	10:10:03	0
3800874	99	82	66,7	cyclictest	3875306	-21	kworker/u4:1+events_unbound	10:10:03	0
3800876	99	81	74,5	cyclictest	3841283	-21	kworker/u4:1+events_unbound	09:25:24	1
3800876	99	81	72,5	cyclictest	3963120	-21	kworker/u4:5+events_unbound	11:55:58	1
3800876	99	81	72,5	cyclictest	3963120	-21	kworker/u4:5+events_unbound	11:55:58	1
3800876	99	79	69,7	cyclictest	3790756	-21	kworker/u4:10+events_unbound	07:29:47	1
3800876	99	79	43,5	cyclictest	3854735	-21	/usr/sbin/munin	09:40:23	1
3800876	99	79	42,5	cyclictest	3859005	-21	/usr/sbin/munin	09:45:42	1
3800874	99	79	70,7	cyclictest	3875305	-21	kworker/u4:0+events_unbound	10:16:15	0
3800876	99	78	68,8	cyclictest	3841289	-21	kworker/u4:11+events_unbound	10:05:32	1
3800874	99	78	71,5	cyclictest	3988422	-21	kworker/u4:0+events_unbound	12:26:36	0
3800874	99	78	70,6	cyclictest	3815041	-21	kworker/u4:9+events_unbound	08:55:21	0
3800876	99	76	69,5	cyclictest	3809909	-21	kworker/u4:7+events_unbound	08:45:19	1
3800876	99	76	65,8	cyclictest	3809909	-21	kworker/u4:7+events_unbound	08:30:17	1
3800876	99	75	65,8	cyclictest	3432542	-21	kworker/u4:4+events_unbound	07:30:29	1
3800874	99	75	57,6	cyclictest	3432542	-21	kworker/u4:4+events_unbound	07:10:03	0
3800876	99	73	63,7	cyclictest	3432542	-21	kworker/u4:4+events_unbound	07:19:46	1
3800876	99	72	65,5	cyclictest	3755903	-21	kworker/u4:11+events_unbound	08:05:01	1
3800876	99	71	63,6	cyclictest	3815041	-21	kworker/u4:9+events_unbound	08:50:20	1
3800876	99	71	61,8	cyclictest	3997005	-21	kworker/u4:3+events_unbound	12:36:04	1
3800876	99	70	55,6	cyclictest	3830534	-21	kworker/u4:2+events_unbound	09:16:07	1
3800874	99	70	43,20	cyclictest	53	-21	kswapd0	12:30:09	0
3800876	99	69	50,6	cyclictest	3863755	-21	kworker/u4:15+events_unbound	10:00:31	1
3800874	99	68	61,5	cyclictest	3879191	-21	kworker/u4:4+events_unbound	10:20:02	0
3800876	99	67	59,6	cyclictest	3806054	-21	kworker/u4:17+events_unbound	07:49:56	1
3800874	99	66	59,5	cyclictest	3812461	-21	kworker/u4:0+events_unbound	08:25:07	0
3800876	99	65	56,6	cyclictest	3806054	-21	kworker/u4:17+events_unbound	07:39:50	1
3800874	99	65	58,6	cyclictest	3824099	-21	kworker/u4:8+events_unbound	09:15:03	0
3800874	99	65	2,27	cyclictest	53	-21	kswapd0	11:10:10	0
3800876	99	64	50,11	cyclictest	3926709	-21	apt-get	11:10:06	1
3800874	99	64	58,5	cyclictest	3950272	-21	kworker/u4:6+events_unbound	11:50:04	0
3800874	99	64	58,5	cyclictest	3950272	-21	kworker/u4:6+events_unbound	11:50:03	0
3800874	99	64	56,6	cyclictest	3967421	-21	kworker/u4:0+events_unbound	11:59:37	0
3800874	99	64	56,6	cyclictest	3967421	-21	kworker/u4:0+events_unbound	11:59:37	0
3800874	99	64	50,7	cyclictest	3841289	-21	kworker/u4:11+xprtiod	09:30:08	0
3800876	99	63	56,5	cyclictest	3875309	-21	kworker/u4:7+events_unbound	10:11:16	1
3800876	99	63	56,5	cyclictest	3875309	-21	kworker/u4:7+events_unbound	10:11:16	1
3800876	99	63	55,5	cyclictest	3432542	-21	kworker/u4:4+events_unbound	07:44:52	1
3800876	99	62	51,8	cyclictest	53	-21	kswapd0	11:00:02	1
3800876	99	62	51,8	cyclictest	53	-21	kswapd0	11:00:01	1
3800874	99	62	54,6	cyclictest	3916533	-21	kworker/u4:0+events_unbound	11:00:03	0
3800874	99	60	53,5	cyclictest	3929432	-21	kworker/u4:11+events_unbound	11:45:04	0
3800874	99	60	52,6	cyclictest	3852612	-21	kworker/u4:4+events_unbound	09:50:04	0
3800876	99	59	49,7	cyclictest	3973724	-21	cpu	12:05:20	1
3800876	99	59	46,9	cyclictest	3584599	-21	kworker/u4:1+events_unbound	07:20:27	1
3800874	99	59	49,8	cyclictest	0	-21	swapper/0	10:40:37	0
3800876	99	58	48,6	cyclictest	3885111	-21	/usr/sbin/munin	10:20:20	1
3800874	99	57	50,5	cyclictest	3887246	-21	kworker/u4:11+events_unbound	10:25:03	0
3800874	99	57	48,7	cyclictest	3815990	-21	sshd	08:05:38	0
3800874	99	56	46,8	cyclictest	3831898	-21	latency_hist	09:10:01	0
3800874	99	56	44,8	cyclictest	3908020	-21	kworker/u4:13+events_unbound	11:31:29	0
3800876	99	55	48,5	cyclictest	3895793	-21	kworker/u4:5+events_unbound	10:35:40	1
3800874	99	55	49,5	cyclictest	3971740	-21	kworker/u4:12+events_unbound	12:10:03	0
3800874	99	55	49,4	cyclictest	3802100	-21	kworker/u4:8+events_unbound	07:17:02	0
3800874	99	55	46,6	cyclictest	3922837	-21	tr	11:05:18	0
3800874	99	55	39,13	cyclictest	3857747	-21	ssh	09:45:00	0
3800876	99	54	44,7	cyclictest	3815042	-21	kworker/u4:12+events_unbound	08:15:12	1
3800876	99	54	44,7	cyclictest	3815042	-21	kworker/u4:12+events_unbound	08:15:12	1
3800876	99	54	43,7	cyclictest	3953615	-21	ssh	11:40:43	1
3800876	99	54	38,6	cyclictest	17	1	rcu_preempt	10:25:20	1
3800874	99	54	47,5	cyclictest	3818872	-21	kworker/u4:19+events_unbound	08:45:03	0
3800874	99	54	4,42	cyclictest	3818914	-21	apt-get	08:20:10	0
3800876	99	53	46,5	cyclictest	3755903	-21	kworker/u4:11+events_unbound	07:50:37	1
3800874	99	53	43,7	cyclictest	3821826	-21	aten_r7power_en	08:30:16	0
3800874	99	53	36,15	cyclictest	3869265	-21	sendmail	10:00:00	0
3800874	99	53	31,17	cyclictest	3918234	-21	cron	11:00:01	0
3800874	99	53	31,17	cyclictest	3918234	-21	cron	11:00:00	0
3800876	99	52	45,5	cyclictest	3977967	-21	/usr/sbin/munin	12:10:17	1
3800876	99	52	44,5	cyclictest	3903030	-21	unixbench_singl	10:40:40	1
3800874	99	52	1,10	cyclictest	3987058	-21	ssh	12:20:33	0
3800876	99	51	44,5	cyclictest	3948190	-21	aten_r7power_cu	11:35:15	1
3800876	99	51	36,6	cyclictest	3875305	-21	kworker/u4:0+events_unbound	10:51:22	1
3800876	99	51	27,17	cyclictest	53	-21	kswapd0	11:05:35	1
3800874	99	51	30,18	cyclictest	0	-21	swapper/0	12:20:02	0
3800876	99	50	43,5	cyclictest	3957046	-21	/usr/sbin/munin	11:45:22	1
3800874	99	50	43,5	cyclictest	3806054	-21	kworker/u4:17+events_unbound	07:40:02	0
3800876	99	49	40,5	cyclictest	3816548	-21	aten2__	08:10:16	1
3800876	99	49	39,6	cyclictest	3847382	-21	/usr/sbin/munin	09:30:30	1
3800876	99	49	37,8	cyclictest	0	-21	swapper/1	12:20:36	1
3800874	99	49	42,5	cyclictest	3822820	-21	kworker/u4:3+events_unbound	08:35:02	0
3800874	99	49	41,6	cyclictest	3920227	-21	kworker/u4:4+events_unbound	12:02:36	0
3800874	99	49	41,6	cyclictest	3920227	-21	kworker/u4:4+events_unbound	12:02:36	0
3800874	99	49	30,16	cyclictest	0	-21	swapper/0	09:35:31	0
3800874	99	49	30,16	cyclictest	0	-21	swapper/0	09:35:31	0
3800876	99	48	38,7	cyclictest	0	-21	swapper/1	09:55:29	1
3800874	99	48	4,39	cyclictest	3949087	-21	awk	11:35:37	0
3800876	99	47	8,35	cyclictest	3970168	-21	ssh	12:00:39	1
3800876	99	47	8,35	cyclictest	3970168	-21	ssh	12:00:39	1
3800876	99	47	39,5	cyclictest	3801772	-21	sendmail_mailqu	07:10:35	1
3800874	99	47	41,4	cyclictest	3839890	-21	irqstats	09:20:23	0
3800874	99	47	38,6	cyclictest	3999925	-21	proc_pri	12:35:43	0
3800874	99	47	37,7	cyclictest	3895793	-21	kworker/u4:5-rpciod	10:35:17	0
3800874	99	47	25,19	cyclictest	3812925	-21	fschecks_count	07:55:23	0
3800876	99	46	39,5	cyclictest	3961860	-21	timerandwakeup	11:50:39	1
3800876	99	46	39,5	cyclictest	3961860	-21	timerandwakeup	11:50:39	1
3800876	99	46	39,5	cyclictest	3940984	-21	unixbench-2d	11:25:45	1
3800876	99	46	38,6	cyclictest	3982243	-21	/usr/sbin/munin	12:15:18	1
3800876	99	46	36,8	cyclictest	3853967	-21	idleruntime-cro	09:40:00	1
3800876	99	46	36,8	cyclictest	3853967	-21	idleruntime-cro	09:40:00	1
3800874	99	46	40,4	cyclictest	3824099	-21	kworker/u4:8+events_unbound	08:40:02	0
3800874	99	46	39,5	cyclictest	3832656	-21	sshd	09:10:22	0
3800874	99	46	37,6	cyclictest	3800872	-21	cyclictest	10:30:31	0
3800874	99	46	3,20	cyclictest	15	1	ktimers/0	10:00:30	0
3800876	99	45	39,4	cyclictest	3821538	-21	systemd	08:25:54	1
3800876	99	45	36,6	cyclictest	3861881	-21	dpkg	09:50:12	1
3800876	99	45	23,9	cyclictest	17	1	rcu_preempt	11:16:45	1
3800874	99	45	36,6	cyclictest	3818806	-21	unixbench_singl	08:15:37	0
3800874	99	45	36,6	cyclictest	3818806	-21	unixbench_singl	08:15:37	0
3800874	99	45	20,21	cyclictest	257	50	irq/23-42890000.ethernet	07:25:09	0
3800876	99	44	37,5	cyclictest	3875305	-21	kworker/u4:0-rpciod	10:30:37	1
3800876	99	44	35,6	cyclictest	3903738	-21	kworker/u4:12-rpciod	10:45:17	1
3800874	99	44	38,4	cyclictest	3844007	-21	switchtime	09:25:38	0
3800876	99	43	37,4	cyclictest	3995107	-21	fschecks_count	12:30:25	1
3800876	99	43	36,4	cyclictest	0	-21	swapper/1	11:00:50	1
3800876	99	43	34,7	cyclictest	3828942	-21	mailstats	08:55:36	1
3800876	99	42	34,6	cyclictest	3824641	-21	fschecks_time	08:40:20	1
3800876	99	42	33,5	cyclictest	3992711	-21	kworker/u4:4-rpciod	12:30:02	1
3800874	99	42	5,10	cyclictest	3827974	-21	modprobe	08:55:00	0
3800874	99	42	34,5	cyclictest	0	-21	swapper/0	07:35:35	0
3800874	99	41	33,5	cyclictest	3804010	-21	gltestperf	07:20:20	0
3800874	99	41	32,6	cyclictest	0	-21	swapper/0	07:45:35	0
3800876	99	40	33,5	cyclictest	3815558	-21	fschecks_time	08:05:21	1
3800876	99	40	32,6	cyclictest	0	-21	swapper/1	11:30:54	1
3800876	99	40	27,10	cyclictest	0	-21	swapper/1	09:00:38	1
3800876	99	36	28,6	cyclictest	3800960	-21	latency_hist	07:10:01	1
3800874	99	28	5,17	cyclictest	3800872	-21	cyclictest	07:10:00	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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