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 May 28, 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
3501914	99	106	94,5	cyclictest	3503139	-21	kworker/u4:1+events_unbound	07:19:34	0
3501914	99	97	90,5	cyclictest	3700269	-21	kworker/u4:15+events_unbound	12:35:48	0
3501914	99	94	86,6	cyclictest	3521234	-21	kworker/u4:2+events_unbound	08:30:09	0
3501914	99	88	81,5	cyclictest	3505724	-21	kworker/u4:5+events_unbound	07:24:36	0
3501914	99	88	75,8	cyclictest	3691224	-21	kworker/u4:0+events_unbound	12:15:13	0
3501914	99	87	79,6	cyclictest	3514646	-21	kworker/u4:4+events_unbound	08:04:56	0
3501914	99	85	77,6	cyclictest	3509540	-21	kworker/u4:18+events_unbound	07:40:00	0
3501914	99	84	77,5	cyclictest	3508268	-21	kworker/u4:14+events_unbound	07:44:43	0
3501915	99	83	75,6	cyclictest	3607100	-21	kworker/u4:8+events_unbound	11:00:00	1
3501915	99	82	63,6	cyclictest	3607102	-21	kworker/u4:10+events_unbound	10:45:32	1
3501914	99	76	68,6	cyclictest	3518659	-21	kworker/u4:14+events_unbound	09:25:15	0
3501915	99	75	68,5	cyclictest	3540144	-21	kworker/u4:4+events_unbound	09:40:18	1
3501915	99	75	65,7	cyclictest	3580463	-21	kworker/u4:3+events_unbound	10:30:28	1
3501914	99	75	67,6	cyclictest	3490192	-21	kworker/u4:16+events_unbound	07:30:01	0
3501915	99	74	67,5	cyclictest	3566786	-21	kworker/u4:9+events_unbound	10:00:00	1
3501915	99	74	67,5	cyclictest	3566786	-21	kworker/u4:9+events_unbound	10:00:00	1
3501914	99	74	67,5	cyclictest	3566782	-21	kworker/u4:1+events_unbound	10:00:20	0
3501915	99	73	64,6	cyclictest	3499239	-21	kworker/u4:4+events_unbound	07:14:33	1
3501914	99	70	34,27	cyclictest	256	50	irq/23-42890000.ethernet	08:45:21	0
3501915	99	69	62,5	cyclictest	3514647	-21	kworker/u4:6+events_unbound	07:59:53	1
3501914	99	69	53,11	cyclictest	3564874	-21	fschecks_count	09:45:20	0
3501914	99	69	52,12	cyclictest	3613528	-21	cron	10:40:00	0
3501915	99	68	60,5	cyclictest	3528971	-21	kworker/u4:0+events_unbound	09:05:01	1
3501914	99	68	45,17	cyclictest	3605217	-21	fschecks_count	10:30:21	0
3501915	99	67	60,5	cyclictest	3523778	-21	kworker/u4:19+events_unbound	08:35:00	1
3501915	99	67	59,6	cyclictest	3607100	-21	kworker/u4:8+events_unbound	11:10:37	1
3501915	99	66	51,10	cyclictest	37	-21	kcompactd0	11:43:36	1
3501914	99	64	48,10	cyclictest	53	-21	kswapd0	11:00:10	0
3501914	99	64	46,5	cyclictest	3616215	-21	kworker/u4:1+events_unbound	10:49:46	0
3501914	99	63	56,5	cyclictest	3517387	-21	kworker/u4:0+events_unbound	08:17:01	0
3501915	99	62	51,8	cyclictest	3521234	-21	kworker/u4:2+events_unbound	09:15:13	1
3501914	99	62	55,5	cyclictest	3506991	-21	kworker/u4:7+events_unbound	08:30:00	0
3501914	99	61	7,11	cyclictest	3635636	-21	ssh	11:05:11	0
3501915	99	60	55,3	cyclictest	3571360	-21	kworker/u4:0+events_unbound	10:10:24	1
3501915	99	60	50,8	cyclictest	53	-21	kswapd0	09:35:01	1
3501914	99	60	51,7	cyclictest	3566786	-21	kworker/u4:9+events_unbound	10:15:25	0
3501915	99	59	51,6	cyclictest	3514646	-21	kworker/u4:4+events_unbound	08:14:56	1
3501915	99	59	50,6	cyclictest	0	-21	swapper/1	09:50:37	1
3501915	99	59	47,9	cyclictest	53	-21	kswapd0	12:15:11	1
3501915	99	58	50,6	cyclictest	3505725	-21	kworker/u4:6+events_unbound	07:49:45	1
3501915	99	57	49,6	cyclictest	3601135	-21	sshd	10:25:26	1
3501915	99	57	49,5	cyclictest	3504409	-21	kworker/u4:8+events_unbound	07:29:36	1
3501914	99	57	39,13	cyclictest	3627067	-21	ssh	10:55:10	0
3501915	99	56	43,6	cyclictest	3695748	-21	kworker/u4:8+events_unbound	12:25:48	1
3501915	99	55	47,6	cyclictest	53	-21	kswapd0	12:10:18	1
3501915	99	55	3,41	cyclictest	3526626	-21	apt-get	08:45:15	1
3501914	99	55	48,5	cyclictest	3607102	-21	kworker/u4:10+events_unbound	11:20:06	0
3501914	99	55	48,5	cyclictest	3573820	-21	fschecks_count	09:55:18	0
3501914	99	55	48,5	cyclictest	3573820	-21	fschecks_count	09:55:18	0
3501914	99	55	44,5	cyclictest	3686696	-21	kworker/u4:1+events_unbound	12:13:00	0
3501914	99	55	41,11	cyclictest	3514646	-21	kworker/u4:4+xprtiod	08:05:12	0
3501915	99	54	46,6	cyclictest	3607102	-21	kworker/u4:10+events_unbound	11:20:41	1
3501915	99	54	46,6	cyclictest	3508266	-21	kworker/u4:12+events_unbound	07:34:37	1
3501915	99	54	43,8	cyclictest	37	-21	kcompactd0	10:25:02	1
3501915	99	54	38,12	cyclictest	0	-21	swapper/1	11:25:37	1
3501914	99	54	47,5	cyclictest	3562246	-21	kworker/u4:11+events_unbound	09:50:02	0
3501914	99	54	42,6	cyclictest	3637698	-21	kworker/u4:5+events_unbound	12:06:00	0
3501914	99	53	46,5	cyclictest	3553104	-21	kworker/u4:5+events_unbound	09:31:59	0
3501914	99	53	45,6	cyclictest	400	-21	systemd-logind	10:40:28	0
3501914	99	53	41,6	cyclictest	0	-21	swapper/0	10:05:17	0
3501914	99	53	37,10	cyclictest	3526359	-21	modprobe	08:45:00	0
3501914	99	53	35,16	cyclictest	3623750	-21	wc	10:50:37	0
3501915	99	52	35,5	cyclictest	3516026	-21	kworker/u4:9+events_unbound	09:35:17	1
3501914	99	52	34,12	cyclictest	0	-21	swapper/0	12:20:13	0
3501915	99	51	44,5	cyclictest	1060	-21	sshd	10:42:14	1
3501915	99	51	43,6	cyclictest	3509540	-21	kworker/u4:18+events_unbound	07:39:38	1
3501915	99	51	42,6	cyclictest	3516026	-21	kworker/u4:9+events_unbound	08:25:03	1
3501915	99	51	40,8	cyclictest	3532841	-21	diskmemload	10:19:46	1
3501914	99	51	43,6	cyclictest	3601532	-21	timerandwakeup	10:25:37	0
3501914	99	51	40,6	cyclictest	3676263	-21	ssh	11:50:26	0
3501914	99	51	32,16	cyclictest	3530264	-21	modprobe	09:00:00	0
3501915	99	50	44,4	cyclictest	3516039	-21	systemd	08:04:54	1
3501915	99	50	39,8	cyclictest	0	-21	swapper/1	11:05:15	1
3501915	99	50	38,10	cyclictest	3583054	-21	netstat	10:05:21	1
3501914	99	50	43,5	cyclictest	3637698	-21	kworker/u4:5+events_unbound	11:38:59	0
3501914	99	50	40,7	cyclictest	3561032	-21	/usr/sbin/munin	09:40:38	0
3501914	99	50	31,17	cyclictest	3672187	-21	xargs	11:45:37	0
3501914	99	50	31,17	cyclictest	3672187	-21	xargs	11:45:36	0
3501915	99	49	42,5	cyclictest	3505584	-21	unixbench-2d	07:20:39	1
3501915	99	49	41,6	cyclictest	3655612	-21	kworker/u4:14+events_unbound	11:55:43	1
3501915	99	49	31,8	cyclictest	3701955	-21	apt-get	12:20:10	1
3501914	99	49	42,5	cyclictest	3669220	-21	kworker/u4:17+events_unbound	11:57:00	0
3501914	99	49	42,5	cyclictest	3637699	-21	kworker/u4:9+rpciod	11:10:16	0
3501914	99	49	41,6	cyclictest	3700267	-21	kworker/u4:13+events_unbound	12:30:03	0
3501914	99	49	40,7	cyclictest	3524893	-21	timerwakeupswit	08:35:38	0
3501915	99	48	41,5	cyclictest	3517017	-21	proc_pri	08:05:39	1
3501915	99	48	40,6	cyclictest	53	-21	kswapd0	12:05:00	1
3501914	99	48	41,5	cyclictest	3535550	-21	kworker/u4:0+events_unbound	09:35:35	0
3501914	99	48	40,6	cyclictest	3585035	-21	kworker/u4:11+events_unbound	10:14:45	0
3501914	99	48	36,8	cyclictest	247	50	irq/20-imx-lcdifv3-crtc.0	09:15:01	0
3501915	99	47	41,4	cyclictest	3610532	-21	timerwakeupswit	10:35:40	1
3501915	99	47	38,6	cyclictest	3532957	-21	latency_hist	09:10:02	1
3501914	99	47	40,5	cyclictest	3506995	-21	kworker/u4:10+events_unbound	07:52:00	0
3501914	99	47	39,6	cyclictest	3695748	-21	kworker/u4:8-rpciod	12:25:41	0
3501914	99	47	38,7	cyclictest	3644505	-21	aten_r7power_po	11:15:18	0
3501914	99	47	29,10	cyclictest	0	-21	swapper/0	09:15:28	0
3501915	99	46	40,4	cyclictest	3635459	-21	latency_hist	11:05:01	1
3501915	99	46	39,4	cyclictest	3689061	-21	/usr/sbin/munin	12:05:16	1
3501915	99	46	36,7	cyclictest	3657701	-21	rm	11:30:14	1
3501914	99	46	38,6	cyclictest	3504410	-21	kworker/u4:9+events_unbound	07:32:01	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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