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 highest latencies:

System rack7slot2.osadl.org (updated Wed Feb 11, 2026 12:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3568837	99	116	90,10	cyclictest	3725393	-21	kworker/u4:3+events_unbound	11:38:37	1
3568837	99	105	99,4	cyclictest	3760061	-21	kworker/u4:0+events_unbound	12:28:44	1
3568837	99	105	99,4	cyclictest	3760061	-21	kworker/u4:0+events_unbound	12:28:44	1
3568837	99	104	95,7	cyclictest	3725389	-21	kworker/u4:0+events_unbound	11:33:35	1
3568837	99	99	90,7	cyclictest	3668307	-21	kworker/u4:1+events_unbound	10:33:26	1
3568837	99	99	90,7	cyclictest	3668307	-21	kworker/u4:1+events_unbound	10:33:26	1
3568837	99	98	91,5	cyclictest	3695095	-21	kworker/u4:11+events_unbound	11:28:35	1
3568837	99	95	79,6	cyclictest	3677257	-21	kworker/u4:9+events_unbound	10:48:28	1
3568837	99	93	78,5	cyclictest	3737993	-21	kworker/u4:8+events_unbound	11:48:38	1
3568837	99	93	76,6	cyclictest	3751257	-21	kworker/u4:7+events_unbound	12:03:41	1
3568835	99	82	64,15	cyclictest	3672757	-21	kworker/u4:4+events_unbound	10:58:30	0
3568837	99	79	71,6	cyclictest	3576442	-21	kworker/u4:2+events_unbound	07:55:00	1
3568835	99	78	73,3	cyclictest	3581490	-21	kworker/u4:1+events_unbound	08:02:59	0
3568835	99	78	46,30	cyclictest	0	-21	swapper/0	10:37:03	0
3568835	99	78	35,39	cyclictest	0	-21	swapper/0	09:55:27	0
3568835	99	76	67,6	cyclictest	3567577	-21	kworker/u4:8+events_unbound	07:27:51	0
3568837	99	75	67,6	cyclictest	3650366	-21	kworker/u4:12+events_unbound	10:08:25	1
3568837	99	73	65,5	cyclictest	3565168	-21	kworker/u4:1+events_unbound	07:35:01	1
3568835	99	71	37,31	cyclictest	0	-21	swapper/0	12:30:27	0
3568835	99	71	31,7	cyclictest	3701753	-21	netstat	11:05:23	0
3568835	99	71	31,4	cyclictest	3706049	-21	if_eth0	11:10:27	0
3568835	99	70	36,31	cyclictest	3771008	-21	/usr/sbin/munin	12:25:18	0
3568835	99	70	36,31	cyclictest	3771008	-21	/usr/sbin/munin	12:25:17	0
3568835	99	70	32,6	cyclictest	0	-21	swapper/0	11:30:17	0
3568835	99	69	35,32	cyclictest	3766094	-21	idleruntime-cro	12:20:00	0
3568835	99	69	35,32	cyclictest	3648810	-21	tune2fs	10:05:20	0
3568835	99	68	58,7	cyclictest	3598101	-21	kworker/u4:14+events_unbound	09:23:14	0
3568835	99	68	36,30	cyclictest	1068	-21	snmpd	10:45:20	0
3568835	99	68	2,11	cyclictest	3635512	-21	fschecks_count	09:50:19	0
3568835	99	67	7,18	cyclictest	3697595	-21	ntpq	11:00:30	0
3568835	99	67	59,6	cyclictest	3585280	-21	kworker/u4:13+events_unbound	08:13:01	0
3568835	99	67	30,7	cyclictest	0	-21	swapper/0	08:50:42	0
3568835	99	67	30,6	cyclictest	0	-21	swapper/0	09:25:20	0
3568835	99	67	23,13	cyclictest	3732090	-21	gltestperf	11:40:20	0
3568835	99	66	56,7	cyclictest	3712100	-21	kworker/u4:9+events_unbound	11:18:33	0
3568835	99	66	32,4	cyclictest	0	-21	swapper/0	11:50:20	0
3568835	99	66	32,4	cyclictest	0	-21	swapper/0	11:39:57	0
3568837	99	65	57,6	cyclictest	3584025	-21	kworker/u4:8+events_unbound	08:07:59	1
3568835	99	65	28,6	cyclictest	0	-21	swapper/0	11:45:28	0
3568835	99	65	27,8	cyclictest	3715530	-21	/usr/sbin/munin	11:20:43	0
3568837	99	64	55,6	cyclictest	3582771	-21	kworker/u4:7+events_unbound	08:15:00	1
3568837	99	64	50,5	cyclictest	3624027	-21	kworker/u4:17+events_unbound	09:48:20	1
3568835	99	64	23,11	cyclictest	0	-21	swapper/0	11:25:32	0
3568835	99	63	31,5	cyclictest	3598653	-21	gltestperf	09:05:20	0
3568835	99	63	31,30	cyclictest	3595563	-21	kworker/u4:3-nfsiod	09:15:12	0
3568835	99	63	30,6	cyclictest	0	-21	swapper/0	10:40:33	0
3568835	99	63	30,5	cyclictest	3630749	-21	/usr/sbin/munin	09:45:17	0
3568835	99	63	24,6	cyclictest	0	-21	swapper/0	11:55:13	0
3568835	99	62	52,8	cyclictest	3781525	-21	kworker/u4:7+events_unbound	12:38:46	0
3568835	99	62	31,27	cyclictest	0	-21	swapper/0	12:15:01	0
3568835	99	62	30,5	cyclictest	3588127	-21	aten2__	08:25:14	0
3568837	99	61	55,4	cyclictest	3650366	-21	kworker/u4:12+events_unbound	10:15:01	1
3568837	99	61	53,6	cyclictest	3571307	-21	kworker/u4:11+events_unbound	07:17:50	1
3568837	99	61	53,6	cyclictest	3571307	-21	kworker/u4:11+events_unbound	07:17:50	1
3568835	99	61	6,53	cyclictest	0	-21	swapper/0	12:20:27	0
3568835	99	61	31,4	cyclictest	3568832	-21	cyclictest	09:40:01	0
3568835	99	61	31,28	cyclictest	3624027	-21	kworker/u4:17-rpciod	10:00:17	0
3568835	99	61	30,5	cyclictest	3661668	-21	acpi	10:20:11	0
3568837	99	60	45,10	cyclictest	0	-21	swapper/1	10:20:25	1
3568837	99	59	52,5	cyclictest	3712099	-21	kworker/u4:8+events_unbound	11:18:35	1
3568837	99	59	45,5	cyclictest	3586546	-21	kworker/u4:18+events_unbound	08:23:02	1
3568837	99	58	47,8	cyclictest	3565168	-21	kworker/u4:1+events_unbound	07:10:00	1
3568837	99	57	50,5	cyclictest	3599394	-21	diskmemload	10:35:43	1
3568837	99	57	48,6	cyclictest	3591683	-21	kworker/u4:5+events_unbound	09:25:00	1
3568837	99	57	44,6	cyclictest	3672757	-21	kworker/u4:4+events_unbound	10:43:28	1
3568837	99	56	50,4	cyclictest	3755628	-21	kworker/u4:9+events_unbound	12:08:42	1
3568837	99	56	47,6	cyclictest	3586546	-21	kworker/u4:18+events_unbound	08:36:01	1
3568837	99	56	43,9	cyclictest	3745475	-21	ntp_states	11:55:32	1
3568837	99	56	37,13	cyclictest	0	-21	swapper/1	09:35:31	1
3568837	99	56	25,12	cyclictest	3705151	-21	modprobe	11:10:00	1
3568835	99	56	37,6	cyclictest	3576445	-21	kworker/u4:11+events_unbound	07:51:03	0
3568837	99	55	46,6	cyclictest	3555089	-21	kworker/u4:2+events_unbound	07:15:01	1
3568835	99	55	46,7	cyclictest	314	-21	systemd-journal	09:13:13	0
3568835	99	55	35,18	cyclictest	3667230	-21	timerwakeupswit	10:25:38	0
3568835	99	55	34,19	cyclictest	3571353	-21	munin-run	07:20:00	0
3568835	99	55	34,19	cyclictest	3571353	-21	munin-run	07:20:00	0
3568837	99	54	47,5	cyclictest	3616024	-21	ssh	09:28:15	1
3568837	99	54	46,5	cyclictest	3595563	-21	kworker/u4:3+events_unbound	09:55:59	1
3568837	99	53	45,6	cyclictest	3594221	-21	kworker/u4:0+events_unbound	09:13:59	1
3568837	99	53	45,6	cyclictest	3575187	-21	kworker/u4:9+events_unbound	07:42:53	1
3568837	99	52	7,33	cyclictest	3732477	-21	ssh	11:40:35	1
3568837	99	52	46,4	cyclictest	3582771	-21	kworker/u4:7+events_unbound	08:30:01	1
3568837	99	52	44,6	cyclictest	3672758	-21	kworker/u4:5+events_unbound	10:55:12	1
3568837	99	52	43,7	cyclictest	3570043	-21	kworker/u4:10+events_unbound	08:50:04	1
3568835	99	52	45,5	cyclictest	3688554	-21	gltestperf	10:50:22	0
3568837	99	51	43,6	cyclictest	3614991	-21	kworker/u4:10+events_unbound	09:32:59	1
3568837	99	51	42,7	cyclictest	3760061	-21	kworker/u4:0+events_unbound	12:21:05	1
3568837	99	51	41,8	cyclictest	3606631	-21	kworker/u4:8+events_unbound	10:04:59	1
3568837	99	51	32,5	cyclictest	3646532	-21	kworker/u4:9+events_unbound	10:19:42	1
3568835	99	51	42,5	cyclictest	0	-21	swapper/0	07:35:35	0
3568837	99	50	43,5	cyclictest	3709512	-21	cut	11:15:01	1
3568837	99	50	43,5	cyclictest	3668306	-21	kworker/u4:0+events_unbound	10:30:00	1
3568837	99	50	42,5	cyclictest	0	-21	swapper/1	12:15:31	1
3568837	99	50	40,7	cyclictest	3777121	-21	kworker/u4:1-rpciod	12:35:39	1
3568837	99	50	35,12	cyclictest	0	-21	swapper/1	12:30:17	1
3568835	99	50	43,5	cyclictest	3750045	-21	cat	12:00:40	0
3568837	99	48	42,4	cyclictest	3576442	-21	kworker/u4:2+events_unbound	08:00:02	1
3568837	99	48	41,5	cyclictest	3568832	-21	cyclictest	10:53:29	1
3568837	99	48	38,7	cyclictest	0	-21	swapper/1	11:50:33	1
3568837	99	48	35,9	cyclictest	37	-21	kcompactd0	09:50:33	1
3568837	99	47	41,4	cyclictest	3758592	-21	wc	12:10:35	1
3568837	99	47	1,39	cyclictest	3700864	-21	munin-run	11:05:01	1
3568835	99	47	40,5	cyclictest	3617683	-21	ssh	09:30:15	0
3568835	99	47	38,7	cyclictest	3580695	-21	fschecks_count	07:55:18	0
3568835	99	47	31,9	cyclictest	255	50	irq/23-42890000.ethernet	08:20:12	0
3568837	99	46	39,5	cyclictest	3604215	-21	aten_r7power_cu	09:15:16	1
3568837	99	46	39,5	cyclictest	3573844	-21	kworker/u4:5+events_unbound	07:30:02	1
3568837	99	46	37,6	cyclictest	3581977	-21	fschecks_count	08:00:20	1
3568835	99	46	40,4	cyclictest	3754006	-21	ntpq	12:05:27	0
3568835	99	46	37,7	cyclictest	3595563	-21	kworker/u4:3-rpciod	08:55:20	0
3568835	99	46	37,5	cyclictest	0	-21	swapper/0	10:10:24	0
3568837	99	45	36,6	cyclictest	3703273	-21	kworker/u4:0-rpciod	11:20:19	1
3568835	99	45	38,5	cyclictest	3586357	-21	timerwakeupswit	08:15:35	0
3568835	99	45	37,6	cyclictest	3658491	-21	unixbench_multi	10:15:38	0
3568835	99	45	36,7	cyclictest	3671429	-21	sendmail_mailqu	10:30:38	0
3568835	99	45	36,7	cyclictest	3671429	-21	sendmail_mailqu	10:30:38	0
3568835	99	45	36,7	cyclictest	3591964	-21	aten_r7power_cu	08:40:16	0
3568835	99	45	36,7	cyclictest	3583212	-21	fschecks_count	08:05:19	0
3568837	99	44	36,6	cyclictest	3595563	-21	kworker/u4:3+events_unbound	09:08:13	1
3568835	99	44	36,5	cyclictest	3594253	-21	latency_hist	08:50:01	0
3568837	99	43	36,5	cyclictest	3594285	-21	latency_hist	08:50:02	1
3568837	99	43	34,7	cyclictest	3592966	-21	kworker/u4:8+events_unbound	09:00:20	1
3568837	99	43	32,9	cyclictest	3586693	-21	latency_hist	08:20:02	1
3568835	99	43	35,6	cyclictest	3597113	-21	aten_r7power_en	09:00:16	0
3568835	99	43	35,6	cyclictest	3590642	-21	aten2__	08:35:17	0
3568835	99	43	2,36	cyclictest	0	-21	swapper/0	07:30:09	0
3568837	99	42	37,4	cyclictest	3578985	-21	systemd	07:47:54	1
3568837	99	42	35,5	cyclictest	3593004	-21	munin-run	08:45:00	1
3568835	99	42	35,5	cyclictest	3571559	-21	aten2__	07:20:15	0
3568835	99	42	34,6	cyclictest	3589443	-21	aten_r7power_en	08:30:15	0
3568837	99	41	34,5	cyclictest	3626660	-21	fschecks_count	09:40:18	1
3568837	99	41	34,5	cyclictest	3576486	-21	apt	07:40:00	1
3568835	99	40	33,5	cyclictest	0	-21	swapper/0	09:40:23	0
3568835	99	40	32,6	cyclictest	3577957	-21	aten_r7power_cu	07:45:12	0
3568835	99	40	32,6	cyclictest	3576714	-21	aten_r7power_cu	07:40:15	0
3568837	99	39	30,7	cyclictest	3590347	-21	unixbench_multi	08:30:36	1
3568837	99	39	30,6	cyclictest	0	-21	swapper/1	07:20:28	1
3568837	99	39	26,9	cyclictest	3595820	-21	basename	08:55:17	1
3568835	99	38	30,6	cyclictest	3569094	-21	aten_r7power_po	07:10:16	0
3568835	99	29	23,4	cyclictest	3567578	-21	kworker/u4:9-rpciod	07:10:02	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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