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 792 highest latencies:

System rack7slot2.osadl.org (updated Mon Apr 13, 2026 00:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3686876	99	99	92,5	cyclictest	3851703	-21	kworker/u4:13+events_unbound	23:42:31	0
3686876	99	97	89,6	cyclictest	3865036	-21	kworker/u4:0+events_unbound	23:57:29	0
3686876	99	97	88,6	cyclictest	3710010	-21	kworker/u4:5+events_unbound	21:32:09	0
3686877	99	89	57,28	cyclictest	3749182	-21	fschecks_count	21:45:20	1
3686876	99	87	78,7	cyclictest	3821237	-21	kworker/u4:6+events_unbound	23:07:26	0
3686877	99	72	9,29	cyclictest	3828608	-21	ssh	23:15:30	1
3686876	99	72	64,6	cyclictest	3799560	-21	kworker/u4:1+events_unbound	22:57:24	0
3686876	99	72	64,6	cyclictest	3799560	-21	kworker/u4:1+events_unbound	22:57:23	0
3686876	99	72	63,6	cyclictest	3873970	-21	kworker/u4:2+events_unbound	00:23:22	0
3686877	99	71	38,31	cyclictest	3780832	-21	unixbench-2d	22:20:39	1
3686876	99	71	63,5	cyclictest	3821235	-21	kworker/u4:1+events_unbound	23:22:29	0
3686877	99	70	39,28	cyclictest	3697537	-21	aten_r7power_po	19:50:17	1
3686877	99	70	31,4	cyclictest	0	-21	swapper/1	23:30:20	1
3686876	99	70	58,9	cyclictest	53	-21	kswapd0	00:25:09	0
3686877	99	69	38,28	cyclictest	3898563	-21	ld	00:35:29	1
3686876	99	69	60,5	cyclictest	0	-21	swapper/0	19:35:11	0
3686876	99	68	61,5	cyclictest	3284335	-21	kworker/u4:9+events_unbound	19:20:01	0
3686876	99	68	52,6	cyclictest	3825692	-21	kworker/u4:4+events_unbound	23:12:26	0
3686877	99	67	34,4	cyclictest	0	-21	swapper/1	23:42:31	1
3686877	99	67	33,4	cyclictest	3824527	-21	switchtime	23:10:38	1
3686877	99	67	32,32	cyclictest	0	-21	swapper/1	19:35:01	1
3686876	99	67	39,23	cyclictest	3814716	-21	rm	23:00:09	0
3686877	99	66	30,5	cyclictest	0	-21	swapper/1	21:50:24	1
3686877	99	66	28,8	cyclictest	0	-21	swapper/1	20:05:33	1
3686877	99	65	56,6	cyclictest	3699782	-21	kworker/u4:10+events_unbound	21:10:01	1
3686877	99	65	51,5	cyclictest	3795068	-21	kworker/u4:9+events_unbound	22:40:00	1
3686877	99	65	33,6	cyclictest	3686872	-21	cyclictest	21:15:41	1
3686877	99	65	33,6	cyclictest	3686872	-21	cyclictest	21:15:40	1
3686877	99	65	33,5	cyclictest	3686872	-21	cyclictest	22:17:59	1
3686877	99	65	30,7	cyclictest	0	-21	swapper/1	22:40:38	1
3686877	99	65	29,6	cyclictest	0	-21	swapper/1	00:15:34	1
3686876	99	65	57,6	cyclictest	3704904	-21	kworker/u4:20+events_unbound	20:41:59	0
3686877	99	64	35,27	cyclictest	3855208	-21	timerandwakeup	23:45:38	1
3686877	99	64	30,6	cyclictest	0	-21	swapper/1	00:25:41	1
3686877	99	64	30,6	cyclictest	0	-21	swapper/1	00:20:33	1
3686877	99	64	30,32	cyclictest	3698983	-21	fschecks_count	19:55:19	1
3686876	99	64	55,6	cyclictest	3816791	-21	kworker/u4:5+events_unbound	23:27:30	0
3686877	99	63	33,5	cyclictest	0	-21	swapper/1	00:05:35	1
3686877	99	63	30,6	cyclictest	0	-21	swapper/1	23:50:27	1
3686876	99	63	57,4	cyclictest	3715116	-21	kworker/u4:13+events_unbound	21:02:03	0
3686876	99	63	48,12	cyclictest	37	-21	kcompactd0	22:43:53	0
3686877	99	62	45,7	cyclictest	3751076	-21	kworker/u4:6+events_unbound	22:12:16	1
3686877	99	62	32,5	cyclictest	3688219	-21	idleruntime-cro	19:15:01	1
3686877	99	62	31,28	cyclictest	3847886	-21	kworker/u4:2-rpciod	23:40:02	1
3686877	99	62	28,6	cyclictest	0	-21	swapper/1	23:25:26	1
3686876	99	62	45,10	cyclictest	3875676	-21	kworker/u4:7	00:10:00	0
3686877	99	61	34,25	cyclictest	0	-21	swapper/1	22:45:17	1
3686877	99	61	27,7	cyclictest	3731494	-21	df_abs	21:25:18	1
3686876	99	61	53,5	cyclictest	3795068	-21	kworker/u4:9+events_unbound	22:38:00	0
3686877	99	60	28,6	cyclictest	0	-21	swapper/1	22:00:41	1
3686876	99	60	48,8	cyclictest	3845140	-21	latency_hist	23:35:01	0
3686876	99	59	51,5	cyclictest	3685605	-21	kworker/u4:3+events_unbound	19:15:01	0
3686876	99	59	50,7	cyclictest	3781722	-21	kworker/u4:2+events_unbound	22:22:18	0
3686876	99	59	49,8	cyclictest	53	-21	kswapd0	22:45:07	0
3686876	99	59	49,7	cyclictest	3762883	-21	ntpq	22:00:32	0
3686877	99	58	48,6	cyclictest	0	-21	swapper/1	00:00:28	1
3686877	99	58	47,7	cyclictest	3766129	-21	apt-get	22:05:06	1
3686876	99	57	48,7	cyclictest	3718995	-21	/usr/sbin/munin	21:10:42	0
3686876	99	57	48,6	cyclictest	3751076	-21	kworker/u4:6+events_unbound	21:52:11	0
3686876	99	57	47,7	cyclictest	53	-21	kswapd0	22:05:08	0
3686876	99	57	45,8	cyclictest	3859513	-21	/usr/sbin/munin	23:50:40	0
3686877	99	56	49,5	cyclictest	3733216	-21	kworker/u4:12+events_unbound	21:40:20	1
3686877	99	56	48,6	cyclictest	3795068	-21	kworker/u4:9+events_unbound	22:52:22	1
3686876	99	56	39,15	cyclictest	3771242	-21	gltestperf	22:10:20	0
3686876	99	55	47,6	cyclictest	3893849	-21	/usr/sbin/munin	00:30:20	0
3686876	99	54	7,29	cyclictest	256	50	irq/23-42890000.ethernet	19:30:26	0
3686876	99	54	46,6	cyclictest	3733216	-21	kworker/u4:12+events_unbound	21:27:09	0
3686876	99	54	45,7	cyclictest	3671717	-21	kworker/u4:8+events_unbound	19:26:46	0
3686876	99	54	43,7	cyclictest	3790717	-21	sd-accept	22:32:17	0
3686877	99	52	7,12	cyclictest	3686847	-21	apt-get	19:10:01	1
3686877	99	52	47,3	cyclictest	3699780	-21	kworker/u4:7+events_unbound	20:11:55	1
3686877	99	52	44,6	cyclictest	3714308	-21	fschecks_count	20:55:18	1
3686876	99	52	44,5	cyclictest	3727211	-21	/usr/sbin/munin	21:20:21	0
3686876	99	52	43,6	cyclictest	3710009	-21	kworker/u4:4+events_unbound	21:17:07	0
3686876	99	52	43,6	cyclictest	3710009	-21	kworker/u4:4+events_unbound	21:17:07	0
3686876	99	52	38,9	cyclictest	3869523	-21	kworker/u4:8-rpciod	00:05:00	0
3686877	99	51	44,5	cyclictest	3741065	-21	ssh	21:35:38	1
3686877	99	51	4,36	cyclictest	37	-21	kcompactd0	00:10:34	1
3686876	99	51	43,6	cyclictest	3786183	-21	kworker/u4:5+events_unbound	22:27:19	0
3686877	99	50	43,5	cyclictest	3819147	-21	aten2__	23:05:16	1
3686877	99	50	40,8	cyclictest	3684390	-21	kworker/u4:1+events_unbound	19:25:00	1
3686877	99	50	40,7	cyclictest	3708891	-21	latency_hist	20:35:02	1
3686876	99	50	43,5	cyclictest	3882212	-21	kworker/u4:11+events_unbound	00:38:37	0
3686876	99	50	43,5	cyclictest	3675760	-21	kworker/u4:0+events_unbound	20:57:03	0
3686876	99	50	29,18	cyclictest	3749005	-21	aten_r7power_vo	21:45:16	0
3686877	99	49	40,6	cyclictest	3675760	-21	kworker/u4:0+events_unbound	20:42:01	1
3686876	99	49	38,8	cyclictest	3696592	-21	tail	19:45:21	0
3686876	99	48	41,4	cyclictest	3846665	-21	users	23:35:42	0
3686876	99	48	35,10	cyclictest	3748533	-21	ssh	21:45:01	0
3686877	99	47	40,5	cyclictest	3792554	-21	latency_hist	22:35:02	1
3686877	99	47	40,5	cyclictest	3757949	-21	fschecks_count	21:55:20	1
3686876	99	47	40,5	cyclictest	3808471	-21	kworker/u4:16+events_unbound	22:52:42	0
3686876	99	47	31,13	cyclictest	3708770	-21	munin-plugin-st	20:35:00	0
3686877	99	46	39,5	cyclictest	3836340	-21	munin-run	23:25:00	1
3686877	99	46	39,5	cyclictest	3710078	-21	kworker/u4:12	20:40:00	1
3686876	99	46	39,5	cyclictest	3712610	-21	grep	20:50:00	0
3686876	99	46	39,5	cyclictest	3706231	-21	munin-run	20:25:01	0
3686876	99	46	38,6	cyclictest	3758810	-21	unixbench-2d	21:55:39	0
3686876	99	46	37,7	cyclictest	0	-21	swapper/0	00:10:19	0
3686876	99	46	37,6	cyclictest	3854202	-21	ssh	23:45:16	0
3686876	99	46	37,6	cyclictest	3828500	-21	/usr/sbin/munin	23:15:26	0
3686876	99	46	37,6	cyclictest	0	-21	swapper/0	20:10:00	0
3686876	99	46	35,7	cyclictest	3702563	-21	aten2__	20:10:16	0
3686876	99	46	25,19	cyclictest	3704758	-21	unixbench-2d	20:15:37	0
3686877	99	45	39,4	cyclictest	3897613	-21	latency_hist	00:35:02	1
3686877	99	45	39,4	cyclictest	3862898	-21	aten_r7power_cu	23:55:16	1
3686877	99	45	39,4	cyclictest	3810452	-21	aten_r7power_vo	22:55:16	1
3686877	99	45	39,4	cyclictest	3810452	-21	aten_r7power_vo	22:55:15	1
3686877	99	45	38,5	cyclictest	3814410	-21	apt-get	23:00:04	1
3686877	99	45	34,8	cyclictest	0	-21	swapper/1	21:30:35	1
3686876	99	45	36,7	cyclictest	3700022	-21	aten2__	20:00:15	0
3686876	99	45	36,7	cyclictest	3698755	-21	aten_r7power_en	19:55:15	0
3686876	99	45	18,24	cyclictest	0	-21	swapper/0	21:35:21	0
3686876	99	44	36,6	cyclictest	3693310	-21	kworker/u4:15+events_unbound	19:41:49	0
3686876	99	44	35,7	cyclictest	3712859	-21	aten_r7power_po	20:50:18	0
3686876	99	44	33,8	cyclictest	3710091	-21	latency_hist	20:40:01	0
3686876	99	44	33,7	cyclictest	0	-21	swapper/0	22:15:16	0
3686877	99	43	37,4	cyclictest	0	-21	swapper/1	19:16:44	1
3686877	99	43	36,5	cyclictest	3727912	-21	cat	21:20:39	1
3686877	99	43	36,5	cyclictest	3695629	-21	sendmail_mailqu	19:40:35	1
3686877	99	43	34,7	cyclictest	3692058	-21	kworker/u4:6	19:30:01	1
3686876	99	43	35,6	cyclictest	3697720	-21	fschecks_time	19:50:20	0
3686877	99	42	35,5	cyclictest	3718171	-21	aten_r7power_en	21:10:21	1
3686877	99	42	35,5	cyclictest	3696960	-21	switchtime	19:45:38	1
3686876	99	42	36,4	cyclictest	3880707	-21	fschecks_time	00:15:18	0
3686876	99	42	24,15	cyclictest	0	-21	swapper/0	19:10:01	0
3686876	99	41	22,10	cyclictest	3690789	-21	cron	19:25:00	0
3686877	99	40	33,5	cyclictest	3704006	-21	sed	20:15:17	1
3686877	99	39	33,4	cyclictest	3706232	-21	munin-plugin-st	20:25:00	1
3686877	99	39	32,5	cyclictest	0	-21	swapper/1	22:25:16	1
3686877	99	39	32,5	cyclictest	0	-21	swapper/1	20:00:28	1
3686877	99	39	32,4	cyclictest	0	-21	swapper/1	19:35:40	1
3686877	99	39	31,6	cyclictest	0	-21	swapper/1	20:25:17	1
3686876	99	39	31,5	cyclictest	0	-21	swapper/0	20:25:37	0
3686876	99	39	23,14	cyclictest	3710010	-21	kworker/u4:5+rpciod	21:05:19	0
3686877	99	38	30,6	cyclictest	0	-21	swapper/1	20:50:20	1
3686877	99	38	28,8	cyclictest	0	-21	swapper/1	21:05:01	1
3686877	99	35	24,8	cyclictest	0	-21	swapper/1	20:45:17	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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