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 Fri Mar 13, 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
3559164	99	131	123,6	cyclictest	3767000	-21	kworker/u4:13+events_unbound	12:30:01	1
3559164	99	131	123,6	cyclictest	3767000	-21	kworker/u4:13+events_unbound	12:30:00	1
3559164	99	95	87,5	cyclictest	3655787	-21	kworker/u4:1+events_unbound	10:34:39	1
3559163	99	84	76,6	cyclictest	3700407	-21	kworker/u4:0+events_unbound	11:14:47	0
3559163	99	84	40,41	cyclictest	3612824	-21	apt	09:35:00	0
3559164	99	77	67,7	cyclictest	3753606	-21	kworker/u4:7+events_unbound	12:35:16	1
3559164	99	76	70,4	cyclictest	3704828	-21	kworker/u4:11+events_unbound	11:29:52	1
3559163	99	75	37,36	cyclictest	3681181	-21	/usr/sbin/munin	10:50:26	0
3559164	99	74	65,7	cyclictest	3669487	-21	kworker/u4:6+events_unbound	10:39:41	1
3559164	99	74	64,7	cyclictest	3655789	-21	kworker/u4:5+events_unbound	10:45:02	1
3559163	99	74	63,7	cyclictest	3619869	-21	kworker/u4:5+events_unbound	09:45:00	0
3559164	99	72	58,10	cyclictest	3749150	-21	kworker/u4:3+events_unbound	12:20:13	1
3559164	99	72	54,7	cyclictest	3638185	-21	kworker/u4:1+events_unbound	10:14:37	1
3559163	99	72	35,7	cyclictest	3586699	-21	aten_r7power_vo	08:55:16	0
3559164	99	71	64,5	cyclictest	3740172	-21	kworker/u4:3+events_unbound	12:00:13	1
3559163	99	71	4,43	cyclictest	3690098	-21	ssh	11:00:24	0
3559163	99	71	4,43	cyclictest	3690098	-21	ssh	11:00:24	0
3559164	99	70	62,6	cyclictest	3669489	-21	kworker/u4:8+events_unbound	10:44:40	1
3559164	99	69	59,7	cyclictest	3629031	-21	kworker/u4:0+events_unbound	09:59:33	1
3559164	99	68	60,5	cyclictest	3709382	-21	kworker/u4:1+events_unbound	11:24:49	1
3559163	99	68	60,6	cyclictest	53	-21	kswapd0	11:30:01	0
3559163	99	68	59,6	cyclictest	53	-21	kswapd0	10:25:01	0
3559164	99	67	61,4	cyclictest	53	-21	kswapd0	07:20:16	1
3559163	99	67	50,5	cyclictest	3709382	-21	kworker/u4:1+events_unbound	11:25:01	0
3559164	99	66	59,5	cyclictest	3583753	-21	kworker/u4:2+events_unbound	08:45:01	1
3559164	99	66	59,5	cyclictest	3583753	-21	kworker/u4:2+events_unbound	08:45:01	1
3559163	99	64	54,7	cyclictest	53	-21	kswapd0	11:30:10	0
3559163	99	62	46,12	cyclictest	0	-21	swapper/0	10:05:12	0
3559163	99	61	55,4	cyclictest	3626490	-21	latency_hist	09:50:02	0
3559163	99	60	45,13	cyclictest	3749150	-21	kworker/u4:3+events_unbound	12:09:57	0
3559163	99	59	52,4	cyclictest	0	-21	swapper/0	09:25:30	0
3559164	99	58	50,5	cyclictest	3649429	-21	fschecks_count	10:15:18	1
3559164	99	58	47,7	cyclictest	3759824	-21	latency_hist	12:20:01	1
3559164	99	57	52,3	cyclictest	3655789	-21	kworker/u4:5+events_unbound	10:30:00	1
3559164	99	57	46,7	cyclictest	3720671	-21	tune2fs	11:35:19	1
3559164	99	56	45,8	cyclictest	3718380	-21	kworker/u4:7+events_unbound	11:50:37	1
3559164	99	56	45,8	cyclictest	3562969	-21	kworker/u4:7+rpciod	07:35:08	1
3559163	99	56	48,6	cyclictest	3677947	-21	kworker/u4:13+events_unbound	10:59:43	0
3559163	99	56	34,19	cyclictest	3560848	-21	fschecks_count	07:15:17	0
3559164	99	55	47,6	cyclictest	3749149	-21	kworker/u4:1+events_unbound	12:14:58	1
3559164	99	55	47,6	cyclictest	3562969	-21	kworker/u4:7+events_unbound	08:19:17	1
3559164	99	55	46,6	cyclictest	3557888	-21	kworker/u4:12+events_unbound	07:14:14	1
3559163	99	55	47,6	cyclictest	3585108	-21	kworker/u4:9+events_unbound	09:39:55	0
3559163	99	55	44,8	cyclictest	3724730	-21	apt-key	11:40:03	0
3559163	99	55	29,21	cyclictest	0	-21	swapper/0	12:10:02	0
3559164	99	54	47,5	cyclictest	3574636	-21	systemd	08:09:17	1
3559164	99	54	46,6	cyclictest	53	-21	kswapd0	09:40:00	1
3559164	99	54	46,6	cyclictest	3569107	-21	sendmail_mailqu	07:45:36	1
3559164	99	53	46,5	cyclictest	3704830	-21	kworker/u4:13+events_unbound	11:20:00	1
3559164	99	53	44,7	cyclictest	315	-21	systemd-journal	10:24:38	1
3559164	99	52	44,6	cyclictest	3609628	-21	ssh	09:30:37	1
3559164	99	52	44,6	cyclictest	3578233	-21	sendmail_mailqu	08:20:33	1
3559163	99	52	42,8	cyclictest	3671790	-21	cpu	10:40:15	0
3559164	99	51	44,4	cyclictest	0	-21	swapper/1	11:30:14	1
3559164	99	50	43,5	cyclictest	3571733	-21	sendmail_mailqu	07:55:40	1
3559164	99	50	42,6	cyclictest	3585593	-21	fschecks_count	08:50:19	1
3559164	99	50	41,7	cyclictest	3644019	-21	sshd	10:09:34	1
3559164	99	50	39,7	cyclictest	3580226	-21	aten_r7power_po	08:30:14	1
3559164	99	49	42,5	cyclictest	3770069	-21	/usr/sbin/munin	12:30:40	1
3559164	99	49	42,5	cyclictest	3690348	-21	/usr/sbin/munin	11:00:35	1
3559164	99	49	42,5	cyclictest	3690348	-21	/usr/sbin/munin	11:00:35	1
3559164	99	49	42,5	cyclictest	3627686	-21	switchtime	09:50:37	1
3559164	99	49	42,5	cyclictest	3604595	-21	gltestperf	09:25:20	1
3559164	99	49	40,7	cyclictest	3681064	-21	grep	10:50:24	1
3559163	99	49	44,3	cyclictest	3574626	-21	kworker/u4:11+events_unbound	08:39:23	0
3559163	99	49	40,6	cyclictest	53	-21	kswapd0	10:40:00	0
3559163	99	49	39,6	cyclictest	3636465	-21	/usr/sbin/munin	10:00:30	0
3559163	99	49	36,11	cyclictest	3764193	-21	latency_hist	12:25:01	0
3559163	99	49	30,17	cyclictest	3645102	-21	sed	10:10:21	0
3559164	99	48	42,4	cyclictest	3623268	-21	/usr/sbin/munin	09:45:41	1
3559164	99	48	39,7	cyclictest	3725214	-21	fschecks_count	11:40:25	1
3559164	99	48	38,7	cyclictest	3590371	-21	latency_hist	09:10:02	1
3559163	99	48	41,5	cyclictest	3742946	-21	sed	12:00:19	0
3559163	99	48	41,5	cyclictest	3649419	-21	basename	10:15:18	0
3559163	99	48	41,5	cyclictest	3599745	-21	aten_r7power_vo	09:20:18	0
3559163	99	48	41,5	cyclictest	3595292	-21	df_abs	09:15:17	0
3559163	99	48	40,6	cyclictest	3740176	-21	kworker/u4:6+events_unbound	12:19:59	0
3559163	99	48	37,8	cyclictest	3578887	-21	aten_r7power_cu	08:25:23	0
3559163	99	48	24,21	cyclictest	0	-21	swapper/0	12:30:38	0
3559163	99	48	23,20	cyclictest	3700409	-21	kworker/u4:4+events_unbound	11:15:11	0
3559164	99	47	40,5	cyclictest	3584352	-21	fschecks_time	08:45:24	1
3559164	99	47	35,9	cyclictest	3581576	-21	sed	08:35:16	1
3559163	99	47	24,20	cyclictest	0	-21	swapper/0	08:05:18	0
3559164	99	46	40,4	cyclictest	3747382	-21	interrupts	12:05:19	1
3559164	99	46	37,6	cyclictest	3590532	-21	dpkg	09:10:10	1
3559164	99	46	36,7	cyclictest	3567407	-21	fschecks_time	07:40:19	1
3559164	99	46	35,9	cyclictest	3596374	-21	unixbench_singl	09:15:40	1
3559164	99	46	35,7	cyclictest	0	-21	swapper/1	11:11:20	1
3559163	99	46	42,2	cyclictest	256	50	irq/23-42890000.ethernet	10:25:31	0
3559163	99	46	39,5	cyclictest	3730489	-21	unixbench_multi	11:45:41	0
3559163	99	46	39,5	cyclictest	3627879	-21	unixbench_multi	09:50:38	0
3559163	99	46	36,8	cyclictest	378	-21	dbus-daemon	07:59:16	0
3559163	99	46	36,8	cyclictest	3676455	-21	fschecks_time	10:45:19	0
3559163	99	46	36,8	cyclictest	3575873	-21	unixbench_singl	08:10:37	0
3559164	99	45	38,5	cyclictest	3635847	-21	df_abs	10:00:14	1
3559164	99	45	38,5	cyclictest	3588217	-21	fschecks_time	09:00:21	1
3559164	99	45	38,5	cyclictest	3574625	-21	kworker/u4:8+events_unbound	08:25:04	1
3559164	99	45	37,6	cyclictest	3738106	-21	aten_r7power_cu	11:55:16	1
3559164	99	45	35,7	cyclictest	3563222	-21	aten_r7power_cu	07:25:15	1
3559164	99	45	35,6	cyclictest	0	-21	swapper/1	08:00:22	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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