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 all highest latencies:

System rack7slot2.osadl.org (updated Sat Jan 24, 2026 12:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3661036	99	113	96,5	cyclictest	3759293	-21	kworker/u4:9+events_unbound	10:46:00	1
3661036	99	107	88,8	cyclictest	3688834	-21	kworker/u4:10+events_unbound	09:05:39	1
3661036	99	99	88,8	cyclictest	3678745	-21	kworker/u4:13+events_unbound	08:50:31	1
3661036	99	93	85,6	cyclictest	3776992	-21	kworker/u4:12+events_unbound	11:06:04	1
3661034	99	82	77,3	cyclictest	3737826	-21	kworker/u4:4+events_unbound	10:05:50	0
3661036	99	81	67,10	cyclictest	3669831	-21	kworker/u4:14+events_unbound	07:50:02	1
3661036	99	78	68,7	cyclictest	3674966	-21	kworker/u4:11+events_unbound	08:05:18	1
3661034	99	78	70,6	cyclictest	3754851	-21	kworker/u4:7+events_unbound	10:40:59	0
3661034	99	74	3,16	cyclictest	3661033	-21	cyclictest	07:10:01	0
3661036	99	73	63,7	cyclictest	3759293	-21	kworker/u4:9+events_unbound	10:30:57	1
3661034	99	73	3,15	cyclictest	3709848	-21	sshd	09:30:23	0
3661034	99	72	27,38	cyclictest	3691713	-21	ssh	09:10:12	0
3661034	99	72	27,38	cyclictest	3691713	-21	ssh	09:10:12	0
3661034	99	71	37,31	cyclictest	3667542	-21	aten_r7power_cu	07:35:16	0
3661034	99	71	3,18	cyclictest	3757678	-21	ssh	10:25:24	0
3661036	99	70	64,4	cyclictest	3668552	-21	kworker/u4:3+events_unbound	07:45:00	1
3661036	99	69	59,7	cyclictest	3833092	-21	kworker/u4:1+events_unbound	11:55:00	1
3661034	99	69	60,7	cyclictest	3676224	-21	kworker/u4:12+events_unbound	08:25:29	0
3661034	99	69	39,27	cyclictest	3762706	-21	awk	10:30:40	0
3661034	99	69	3,14	cyclictest	3796817	-21	ssh	11:10:24	0
3661034	99	69	1,23	cyclictest	3835243	-21	apt-get	11:55:11	0
3661036	99	68	59,6	cyclictest	3690120	-21	kworker/u4:9+events_unbound	09:25:44	1
3661036	99	68	57,7	cyclictest	3658557	-21	kworker/u4:2+events_unbound	08:00:12	1
3661034	99	68	61,5	cyclictest	3733385	-21	kworker/u4:2+events_unbound	10:10:51	0
3661036	99	67	59,6	cyclictest	3785184	-21	kworker/u4:0+events_unbound	11:01:01	1
3661034	99	67	54,10	cyclictest	410	-21	systemd-logind	08:35:28	0
3661034	99	67	2,16	cyclictest	3700480	-21	apt-get	09:20:15	0
3661034	99	67	21,43	cyclictest	255	50	irq/23-42890000.ethernet	08:50:32	0
3661036	99	66	58,6	cyclictest	3754851	-21	kworker/u4:7+events_unbound	10:56:00	1
3661036	99	66	57,6	cyclictest	3663494	-21	kworker/u4:9+events_unbound	08:40:30	1
3661034	99	66	53,5	cyclictest	3867559	-21	kworker/u4:10+events_unbound	12:36:21	0
3661034	99	66	52,11	cyclictest	3702435	-21	kworker/u4:14+events_unbound	09:40:45	0
3661034	99	66	4,15	cyclictest	3801163	-21	ntpq	11:15:24	0
3661034	99	66	32,30	cyclictest	0	-21	swapper/0	11:05:29	0
3661034	99	66	22,41	cyclictest	3814332	-21	ntpq	11:30:32	0
3661036	99	65	57,6	cyclictest	3846283	-21	kworker/u4:5+events_unbound	12:11:17	1
3661036	99	65	57,6	cyclictest	3674966	-21	kworker/u4:11+events_unbound	09:00:33	1
3661036	99	65	44,13	cyclictest	0	-21	swapper/1	09:30:24	1
3661034	99	65	57,6	cyclictest	3802835	-21	kworker/u4:1+events_unbound	11:21:08	0
3661034	99	65	57,5	cyclictest	3776992	-21	kworker/u4:12+events_unbound	11:26:09	0
3661034	99	65	53,9	cyclictest	3694158	-21	kworker/u4:4+events_unbound	09:15:41	0
3661034	99	65	31,32	cyclictest	3664732	-21	sed	07:20:37	0
3661034	99	65	29,33	cyclictest	54	-21	kswapd0	11:35:11	0
3661034	99	65	28,28	cyclictest	255	50	irq/23-42890000.ethernet	07:50:12	0
3661034	99	65	20,41	cyclictest	3661312	-21	aten_r7power_vo	07:10:17	0
3661034	99	64	40,22	cyclictest	3769844	-21	ssh	10:40:01	0
3661034	99	64	29,32	cyclictest	0	-21	swapper/0	12:05:17	0
3661034	99	63	32,29	cyclictest	3677863	-21	sed	08:15:16	0
3661034	99	63	30,29	cyclictest	0	-21	swapper/0	11:45:17	0
3661034	99	63	28,32	cyclictest	3705336	-21	if_err_eth0	09:25:20	0
3661034	99	63	16,11	cyclictest	3855811	-21	sendmail-mta	12:18:50	0
3661036	99	62	54,6	cyclictest	3850619	-21	kworker/u4:0+events_unbound	12:21:18	1
3661036	99	62	53,7	cyclictest	3694158	-21	kworker/u4:4+events_unbound	09:20:42	1
3661034	99	62	35,24	cyclictest	3852253	-21	kworker/u4:7	12:15:00	0
3661034	99	62	34,25	cyclictest	3788384	-21	open_inodes	11:00:36	0
3661034	99	62	28,30	cyclictest	0	-21	swapper/0	09:05:26	0
3661034	99	62	28,30	cyclictest	0	-21	swapper/0	08:55:36	0
3661034	99	62	27,33	cyclictest	3689093	-21	aten_r7power_cu	09:00:15	0
3661034	99	62	26,32	cyclictest	0	-21	swapper/0	10:45:35	0
3661034	99	62	25,34	cyclictest	0	-21	swapper/0	10:00:35	0
3661034	99	62	16,4	cyclictest	255	50	irq/23-42890000.ethernet	09:50:28	0
3661036	99	61	53,6	cyclictest	3657384	-21	kworker/u4:0+events_unbound	07:15:01	1
3661036	99	61	52,6	cyclictest	3690121	-21	kworker/u4:15+events_unbound	09:10:40	1
3661036	99	61	52,6	cyclictest	3690121	-21	kworker/u4:15+events_unbound	09:10:39	1
3661034	99	61	53,5	cyclictest	0	-21	swapper/0	12:20:41	0
3661034	99	61	29,28	cyclictest	0	-21	swapper/0	10:15:14	0
3661034	99	61	2,18	cyclictest	3675854	-21	ps	08:05:35	0
3661034	99	60	4,8	cyclictest	3823116	-21	sh	11:40:35	0
3661034	99	60	32,26	cyclictest	3839952	-21	fschecks_time	12:00:18	0
3661034	99	60	3,13	cyclictest	3861181	-21	ssh	12:25:14	0
3661034	99	60	2,9	cyclictest	3677495	-21	modprobe	08:15:01	0
3661034	99	60	2,18	cyclictest	3663159	-21	ps	07:15:33	0
3661034	99	59	51,6	cyclictest	3720166	-21	kworker/u4:1+events_unbound	09:55:49	0
3661034	99	59	4,7	cyclictest	3684561	-21	ldconfig	08:40:24	0
3661034	99	59	31,25	cyclictest	0	-21	swapper/0	07:55:21	0
3661034	99	59	30,26	cyclictest	3754152	-21	sshd	10:20:54	0
3661034	99	59	25,31	cyclictest	3666599	-21	gltestperf	07:30:19	0
3661034	99	59	2,14	cyclictest	3680010	-21	users	08:20:37	0
3661034	99	59	13,11	cyclictest	3675103	-21	sed	08:05:01	0
3661036	99	58	50,6	cyclictest	3867559	-21	kworker/u4:10+events_unbound	12:33:44	1
3661036	99	58	50,6	cyclictest	3867559	-21	kworker/u4:10+events_unbound	12:33:44	1
3661034	99	58	27,29	cyclictest	0	-21	swapper/0	11:50:25	0
3661034	99	58	23,31	cyclictest	0	-21	swapper/0	07:40:28	0
3661036	99	57	50,5	cyclictest	3674966	-21	kworker/u4:11+events_unbound	08:20:02	1
3661036	99	57	48,7	cyclictest	388	-21	dbus-daemon	08:35:28	1
3661034	99	57	4,14	cyclictest	3723123	-21	ntp_states	09:45:33	0
3661034	99	57	23,31	cyclictest	0	-21	swapper/0	09:35:31	0
3661034	99	57	1,5	cyclictest	3783780	-21	ntpq	10:55:24	0
3661036	99	56	47,6	cyclictest	54	-21	kswapd0	11:35:01	1
3661034	99	56	2,6	cyclictest	3779704	-21	proc_pri	10:50:35	0
3661034	99	56	23,30	cyclictest	3662242	-21	kworker/u4:7+rpciod	07:45:38	0
3661036	99	55	40,12	cyclictest	0	-21	swapper/1	10:10:28	1
3661034	99	55	18,33	cyclictest	0	-21	swapper/0	08:30:15	0
3661034	99	55	15,6	cyclictest	3685872	-21	awk	08:45:26	0
3661036	99	54	47,5	cyclictest	3828674	-21	kworker/u4:2+events_unbound	12:20:02	1
3661036	99	54	45,5	cyclictest	37	-21	kcompactd0	11:14:23	1
3661034	99	54	19,33	cyclictest	3865694	-21	df_abs	12:30:15	0
3661034	99	54	19,33	cyclictest	3865694	-21	df_abs	12:30:14	0
3661036	99	53	48,4	cyclictest	3763714	-21	kworker/u4:10+events_unbound	10:35:58	1
3661036	99	52	4,36	cyclictest	3718666	-21	ssh	09:40:27	1
3661034	99	52	1,15	cyclictest	3665212	-21	diskstats	07:25:17	0
3661036	99	51	42,7	cyclictest	0	-21	swapper/1	11:25:28	1
3661036	99	51	34,14	cyclictest	3714397	-21	ssh	09:35:33	1
3661036	99	50	43,5	cyclictest	3871086	-21	head	12:35:41	1
3661036	99	50	43,5	cyclictest	3663494	-21	kworker/u4:9+events_unbound	07:40:00	1
3661036	99	49	42,5	cyclictest	3685999	-21	sendmail_mailqu	08:45:33	1
3661036	99	49	22,9	cyclictest	3824251	-21	kworker/u4:12+events_unbound	11:49:49	1
3661036	99	47	41,4	cyclictest	3824251	-21	kworker/u4:12+events_unbound	12:00:01	1
3661036	99	47	41,4	cyclictest	3748806	-21	gltestperf	10:15:19	1
3661036	99	47	39,6	cyclictest	3771050	-21	sendmail_mailqu	10:40:34	1
3661036	99	47	39,5	cyclictest	3733383	-21	ssh	09:57:29	1
3661036	99	47	38,6	cyclictest	3715713	-21	kworker/u4:2+events_unbound	09:45:36	1
3661036	99	47	38,6	cyclictest	3680430	-21	df_abs	08:25:17	1
3661036	99	47	30,10	cyclictest	0	-21	swapper/1	10:25:36	1
3661036	99	46	8,26	cyclictest	3736057	-21	ssh	10:00:29	1
3661036	99	46	39,5	cyclictest	3833096	-21	kworker/u4:8+events_unbound	11:55:27	1
3661036	99	46	39,5	cyclictest	3658557	-21	kworker/u4:2+events_unbound	07:10:01	1
3661036	99	46	39,4	cyclictest	0	-21	swapper/1	08:25:00	1
3661036	99	46	38,6	cyclictest	3720167	-21	kworker/u4:4+events_unbound	09:50:02	1
3661036	99	45	38,5	cyclictest	3698604	-21	kworker/u4:6+events_unbound	09:19:59	1
3661036	99	45	35,8	cyclictest	3664797	-21	systemd	07:24:54	1
3661036	99	45	34,8	cyclictest	3817584	-21	gpgv	11:35:02	1
3661036	99	45	32,7	cyclictest	0	-21	swapper/1	11:20:20	1
3661036	99	45	26,5	cyclictest	17	1	rcu_preempt	12:29:36	1
3661036	99	44	37,5	cyclictest	3822968	-21	ssh	11:40:29	1
3661036	99	44	36,6	cyclictest	3673514	-21	timerwakeupswit	07:55:35	1
3661036	99	44	35,7	cyclictest	3800744	-21	/usr/sbin/munin	11:15:15	1
3661036	99	44	35,7	cyclictest	3678746	-21	kworker/u4:14+events_unbound	08:30:29	1
3661036	99	44	33,7	cyclictest	0	-21	swapper/1	07:25:22	1
3661036	99	44	1,32	cyclictest	3739909	-21	diskstats	10:05:17	1
3661036	99	43	37,4	cyclictest	3750428	-21	kworker/u4:10-rpciod	10:20:29	1
3661036	99	42	36,4	cyclictest	0	-21	swapper/1	08:55:31	1
3661036	99	42	36,4	cyclictest	0	-21	swapper/1	07:50:02	1
3661036	99	42	34,5	cyclictest	3844296	-21	fschecks_time	12:05:19	1
3661036	99	42	29,8	cyclictest	3667311	-21	cron	07:35:01	1
3661036	99	41	32,5	cyclictest	0	-21	swapper/1	07:15:16	1
3661036	99	41	31,7	cyclictest	0	-21	swapper/1	10:50:12	1
3661036	99	39	30,6	cyclictest	3658553	-21	kworker/u4:1+rpciod	08:10:19	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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