OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #7, slot #2

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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 Tue Jan 06, 2026 12:44:13)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3953563	99	105	96,7	cyclictest	4020673	-21	kworker/u4:2+events_unbound	10:14:53	0
3953565	99	103	85,5	cyclictest	3986270	-21	kworker/u4:2+events_unbound	09:19:41	1
3953563	99	97	89,6	cyclictest	3971271	-21	kworker/u4:11+events_unbound	08:19:30	0
3953563	99	95	77,12	cyclictest	54	-21	kswapd0	11:45:11	0
3953563	99	94	81,5	cyclictest	3982737	-21	kworker/u4:7+events_unbound	09:09:40	0
3953563	99	91	22,49	cyclictest	3953564	-21	kworker/u4:9	07:10:00	0
3953563	99	85	77,6	cyclictest	3971267	-21	kworker/u4:7+events_unbound	08:29:33	0
3953563	99	84	75,7	cyclictest	3953491	-21	kworker/u4:10+events_unbound	07:59:27	0
3953565	99	82	72,7	cyclictest	4078427	-21	kworker/u4:11+events_unbound	11:05:05	1
3953563	99	79	72,5	cyclictest	3970007	-21	kworker/u4:4+events_unbound	08:14:30	0
3953565	99	75	33,37	cyclictest	0	-21	swapper/1	09:20:31	1
3953565	99	71	4,26	cyclictest	4150832	-21	ssh	12:30:15	1
3953563	99	71	64,5	cyclictest	3962450	-21	kworker/u4:3+events_unbound	07:44:26	0
3953563	99	71	64,5	cyclictest	3962450	-21	kworker/u4:3+events_unbound	07:44:26	0
3953565	99	70	48,17	cyclictest	54	-21	kswapd0	11:00:12	1
3953565	99	69	34,33	cyclictest	3983336	-21	gltestperf	09:05:19	1
3953565	99	68	59,7	cyclictest	54	-21	kswapd0	10:50:12	1
3953565	99	67	35,29	cyclictest	4084956	-21	tune2fs	11:10:23	1
3953565	99	66	41,22	cyclictest	4015235	-21	unixbench_multi	09:45:37	1
3953565	99	66	31,32	cyclictest	0	-21	swapper/1	10:45:30	1
3953565	99	65	57,5	cyclictest	4115987	-21	kworker/u4:4+events_unbound	12:00:17	1
3953565	99	65	4,19	cyclictest	4056241	-21	ssh	10:35:31	1
3953565	99	65	32,30	cyclictest	0	-21	swapper/1	09:40:26	1
3953565	99	65	31,31	cyclictest	4023306	-21	mailstats	09:55:36	1
3953565	99	65	22,40	cyclictest	4038687	-21	sed	10:15:01	1
3953563	99	65	50,10	cyclictest	255	50	irq/23-42890000.ethernet	10:20:11	0
3953565	99	64	38,24	cyclictest	4111783	-21	kworker/u4:16-nfsiod	11:45:12	1
3953565	99	64	32,29	cyclictest	0	-21	swapper/1	11:45:01	1
3953565	99	64	3,16	cyclictest	3979719	-21	ntpq	08:50:27	1
3953565	99	64	27,34	cyclictest	0	-21	swapper/1	08:45:00	1
3953563	99	64	6,45	cyclictest	4068600	-21	ssh	10:50:27	0
3953563	99	64	57,5	cyclictest	4061585	-21	kworker/u4:2+events_unbound	10:50:00	0
3953563	99	64	46,9	cyclictest	255	50	irq/23-42890000.ethernet	09:50:10	0
3953565	99	63	35,26	cyclictest	4005542	-21	find	09:35:12	1
3953565	99	63	35,26	cyclictest	4005542	-21	find	09:35:12	1
3953565	99	63	31,29	cyclictest	3967753	-21	aten_r7power_cu	08:05:15	1
3953565	99	62	57,3	cyclictest	3971267	-21	kworker/u4:7+events_unbound	08:49:36	1
3953565	99	62	32,27	cyclictest	4048021	-21	gcc	10:25:34	1
3953565	99	62	30,29	cyclictest	0	-21	swapper/1	12:05:21	1
3953565	99	62	30,29	cyclictest	0	-21	swapper/1	10:30:36	1
3953565	99	62	30,29	cyclictest	0	-21	swapper/1	07:40:18	1
3953565	99	62	30,29	cyclictest	0	-21	swapper/1	07:40:18	1
3953565	99	62	29,29	cyclictest	0	-21	swapper/1	11:15:31	1
3953565	99	62	28,30	cyclictest	0	-21	swapper/1	11:20:33	1
3953563	99	62	57,3	cyclictest	0	-21	swapper/0	09:30:33	0
3953563	99	62	57,3	cyclictest	0	-21	swapper/0	09:30:33	0
3953563	99	62	51,9	cyclictest	255	50	irq/23-42890000.ethernet	10:05:33	0
3953565	99	61	37,22	cyclictest	4072987	-21	find	10:55:38	1
3953565	99	61	37,22	cyclictest	4072987	-21	find	10:55:38	1
3953565	99	61	33,26	cyclictest	4018331	-21	aten_r7power_cu	09:50:20	1
3953565	99	61	32,26	cyclictest	3994907	-21	kworker/u4:4-rpciod	09:30:10	1
3953565	99	61	32,26	cyclictest	3994907	-21	kworker/u4:4-rpciod	09:30:10	1
3953565	99	61	30,28	cyclictest	0	-21	swapper/1	07:50:38	1
3953565	99	61	28,30	cyclictest	0	-21	swapper/1	07:59:25	1
3953565	99	61	27,31	cyclictest	0	-21	swapper/1	12:15:35	1
3953565	99	61	27,31	cyclictest	0	-21	swapper/1	12:15:35	1
3953565	99	61	26,32	cyclictest	0	-21	swapper/1	08:30:23	1
3953565	99	61	2,18	cyclictest	4043989	-21	ssh	10:20:35	1
3953565	99	61	2,18	cyclictest	4031557	-21	ps	10:05:35	1
3953565	99	61	21,36	cyclictest	4117899	-21	acpi	11:50:11	1
3953563	99	61	52,7	cyclictest	0	-21	swapper/0	12:00:13	0
3953565	99	60	4,48	cyclictest	4101940	-21	ssh	11:30:25	1
3953565	99	60	31,27	cyclictest	0	-21	swapper/1	08:15:35	1
3953565	99	60	29,28	cyclictest	0	-21	swapper/1	10:00:30	1
3953565	99	60	28,29	cyclictest	0	-21	swapper/1	09:25:34	1
3953565	99	60	28,29	cyclictest	0	-21	swapper/1	09:25:34	1
3953565	99	60	28,29	cyclictest	0	-21	swapper/1	07:35:28	1
3953565	99	60	26,32	cyclictest	4060827	-21	unixbench_multi	10:40:38	1
3953565	99	60	24,34	cyclictest	4135352	-21	mailstats	12:10:37	1
3953563	99	60	53,5	cyclictest	3939929	-21	kworker/u4:4+events_unbound	07:30:00	0
3953563	99	60	53,5	cyclictest	3939929	-21	kworker/u4:4+events_unbound	07:30:00	0
3953563	99	60	46,6	cyclictest	3962451	-21	kworker/u4:5+events_unbound	08:00:59	0
3953563	99	60	42,16	cyclictest	4070005	-21	kworker/u4:10+events_unbound	11:15:01	0
3953565	99	59	3,15	cyclictest	3969581	-21	ntpq	08:10:30	1
3953565	99	59	28,28	cyclictest	0	-21	swapper/1	11:25:28	1
3953565	99	59	28,27	cyclictest	0	-21	swapper/1	12:20:32	1
3953565	99	59	27,29	cyclictest	0	-21	swapper/1	07:20:01	1
3953565	99	59	26,30	cyclictest	0	-21	swapper/1	09:10:39	1
3953565	99	59	25,30	cyclictest	0	-21	swapper/1	07:30:26	1
3953565	99	59	2,16	cyclictest	4155828	-21	ps	12:35:35	1
3953563	99	59	53,4	cyclictest	54	-21	kswapd0	12:30:12	0
3953563	99	59	52,5	cyclictest	4099048	-21	kworker/u4:2+events_unbound	11:31:43	0
3953563	99	59	51,6	cyclictest	4016446	-21	kworker/u4:12+events_unbound	09:59:50	0
3953563	99	59	45,11	cyclictest	54	-21	kswapd0	11:00:08	0
3953563	99	59	37,19	cyclictest	4109408	-21	latency_hist	11:40:01	0
3953565	99	58	25,30	cyclictest	0	-21	swapper/1	10:15:20	1
3953565	99	58	24,30	cyclictest	0	-21	swapper/1	08:40:01	1
3953565	99	58	21,34	cyclictest	0	-21	swapper/1	11:40:01	1
3953563	99	58	47,8	cyclictest	4072394	-21	fschecks_count	10:55:22	0
3953563	99	58	47,8	cyclictest	4072394	-21	fschecks_count	10:55:22	0
3953565	99	57	26,27	cyclictest	0	-21	swapper/1	07:45:18	1
3953565	99	57	25,29	cyclictest	0	-21	swapper/1	11:59:27	1
3953565	99	57	23,31	cyclictest	0	-21	swapper/1	08:20:35	1
3953565	99	57	20,34	cyclictest	0	-21	swapper/1	08:00:14	1
3953565	99	55	25,27	cyclictest	0	-21	swapper/1	07:20:23	1
3953565	99	55	12,7	cyclictest	4147518	-21	grep	12:25:31	1
3953565	99	54	18,32	cyclictest	0	-21	swapper/1	09:00:19	1
3953563	99	54	46,6	cyclictest	0	-21	swapper/0	10:30:35	0
3953563	99	54	45,7	cyclictest	0	-21	swapper/0	10:40:29	0
3953563	99	54	39,9	cyclictest	0	-21	swapper/0	12:10:36	0
3953563	99	54	33,18	cyclictest	3974049	-21	aten2__	08:30:15	0
3953565	99	53	22,28	cyclictest	0	-21	swapper/1	07:10:33	1
3953565	99	53	21,29	cyclictest	0	-21	swapper/1	08:25:15	1
3953563	99	53	47,4	cyclictest	4042960	-21	latency_hist	10:20:02	0
3953563	99	53	46,5	cyclictest	3994909	-21	kworker/u4:6+events_unbound	09:28:00	0
3953563	99	53	46,5	cyclictest	3994909	-21	kworker/u4:6+events_unbound	09:28:00	0
3953563	99	52	45,5	cyclictest	54	-21	kswapd0	10:25:34	0
3953563	99	52	45,5	cyclictest	4123041	-21	mailstats	11:55:38	0
3953563	99	52	45,5	cyclictest	3994907	-21	kworker/u4:4+events_unbound	09:38:00	0
3953563	99	52	45,5	cyclictest	3994907	-21	kworker/u4:4+events_unbound	09:38:00	0
3953563	99	52	45,5	cyclictest	3981163	-21	cat	08:55:34	0
3953563	99	51	44,5	cyclictest	3961168	-21	kworker/u4:17+events_unbound	07:50:03	0
3953565	99	50	19,4	cyclictest	0	-21	swapper/1	07:27:39	1
3953565	99	50	19,4	cyclictest	0	-21	swapper/1	07:27:39	1
3953563	99	50	43,5	cyclictest	0	-21	swapper/0	11:50:36	0
3953563	99	50	37,10	cyclictest	4155260	-21	fschecks_count	12:35:19	0
3953563	99	50	24,23	cyclictest	255	50	irq/23-42890000.ethernet	11:05:18	0
3953563	99	50	15,14	cyclictest	17	1	rcu_preempt	11:15:46	0
3953565	99	49	17,6	cyclictest	3980399	-21	acpi	08:55:11	1
3953563	99	49	43,5	cyclictest	4140444	-21	kworker/u4:17+events_unbound	12:17:00	0
3953563	99	49	43,5	cyclictest	4140444	-21	kworker/u4:17+events_unbound	12:17:00	0
3953563	99	49	42,5	cyclictest	3971267	-21	kworker/u4:7+events_unbound	08:23:59	0
3953563	99	49	42,5	cyclictest	3955379	-21	fschecks_time	07:15:33	0
3953563	99	49	39,7	cyclictest	4098209	-21	diskmemload	11:25:38	0
3953563	99	48	41,5	cyclictest	4115983	-21	kworker/u4:0+events_unbound	12:20:50	0
3953563	99	48	41,5	cyclictest	4110026	-21	fschecks_time	11:40:20	0
3953563	99	48	41,5	cyclictest	4003544	-21	kworker/u4:0+events_unbound	09:45:44	0
3953563	99	48	41,5	cyclictest	3976034	-21	cat	08:35:34	0
3953563	99	48	41,5	cyclictest	3957080	-21	cat	07:20:39	0
3953563	99	48	38,8	cyclictest	3978977	-21	cron	08:50:00	0
3953563	99	47	40,5	cyclictest	3962450	-21	kworker/u4:3+events_unbound	07:45:02	0
3953563	99	47	39,6	cyclictest	4041140	-21	kworker/u4:0+events_unbound	10:37:00	0
3953563	99	47	39,6	cyclictest	3953491	-21	kworker/u4:10+events_unbound	08:05:43	0
3953563	99	47	38,6	cyclictest	3981763	-21	aten_r7power_en	09:00:15	0
3953563	99	46	39,5	cyclictest	4093318	-21	fschecks_time	11:20:20	0
3953563	99	46	38,6	cyclictest	3976677	-21	aten_r7power_cu	08:40:20	0
3953563	99	46	3,20	cyclictest	3992553	-21	ssh	09:20:00	0
3953563	99	46	18,11	cyclictest	17	1	rcu_preempt	12:08:41	0
3953563	99	45	38,5	cyclictest	3984639	-21	sh	09:10:18	0
3953563	99	44	37,6	cyclictest	3953490	-21	kworker/u4:9+events_unbound	07:13:03	0
3953563	99	44	37,5	cyclictest	4012178	-21	kworker/u4:10+events_unbound	09:43:22	0
3953563	99	44	37,5	cyclictest	3993650	-21	ntp_states	09:20:33	0
3953563	99	44	37,5	cyclictest	3971271	-21	kworker/u4:11+events_unbound	08:50:02	0
3953563	99	44	36,5	cyclictest	4147746	-21	sed	12:25:37	0
3953563	99	43	36,5	cyclictest	3960403	-21	fschecks_time	07:35:19	0
3953563	99	43	36,5	cyclictest	3956108	-21	kworker/u4:1+events_unbound	07:33:43	0
3953563	99	43	34,6	cyclictest	0	-21	swapper/0	10:00:28	0
3953565	99	34	24,8	cyclictest	0	-21	swapper/1	07:10:01	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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