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 792 highest latencies:

System rack7slot2.osadl.org (updated Thu Aug 27, 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
157875	99	156	145,8	cyclictest	53	-21	kswapd0	23:50:06	0
157876	99	108	98,8	cyclictest	156605	-21	kworker/u4:8+events_unbound	19:45:33	1
157875	99	108	92,14	cyclictest	263258	-21	kworker/u4:11+events_unbound	22:51:12	0
157875	99	94	86,6	cyclictest	187484	-21	kworker/u4:6+events_unbound	21:30:54	0
157875	99	93	84,7	cyclictest	361432	-21	kworker/u4:4+events_unbound	00:23:46	0
157875	99	90	85,3	cyclictest	365299	-21	kworker/u4:15+events_unbound	00:28:10	0
157875	99	90	83,5	cyclictest	298731	-21	kworker/u4:2+events_unbound	23:21:20	0
157875	99	90	83,5	cyclictest	174519	-21	kworker/u4:15+events_unbound	20:35:45	0
157875	99	88	78,7	cyclictest	200764	-21	kworker/u4:9+events_unbound	21:35:55	0
157875	99	87	68,14	cyclictest	53	-21	kswapd0	22:20:10	0
157875	99	84	67,5	cyclictest	347826	-21	kworker/u4:8+events_unbound	00:11:05	0
157875	99	82	75,5	cyclictest	307801	-21	kworker/u4:9+events_unbound	23:26:20	0
157875	99	76	70,4	cyclictest	19	1	rcuc/0	20:45:44	0
157876	99	75	66,7	cyclictest	232218	-21	kworker/u4:4+events_unbound	22:21:05	1
157875	99	73	66,5	cyclictest	227625	-21	kworker/u4:1+events_unbound	22:16:04	0
157875	99	70	59,4	cyclictest	351691	-21	kworker/u4:10+events_unbound	00:20:02	0
157875	99	68	60,6	cyclictest	213857	-21	kworker/u4:5+events_unbound	21:45:59	0
157875	99	68	54,6	cyclictest	294272	-21	kworker/u4:0+events_unbound	23:16:19	0
157875	99	68	45,16	cyclictest	292410	-21	fschecks_count	23:05:19	0
157876	99	65	51,8	cyclictest	169430	-21	modprobe	19:55:00	1
157876	99	65	51,8	cyclictest	169430	-21	modprobe	19:54:59	1
157875	99	65	57,6	cyclictest	263258	-21	kworker/u4:11+events_unbound	22:56:13	0
157876	99	64	56,5	cyclictest	213855	-21	kworker/u4:2+events_unbound	21:40:56	1
157875	99	64	4,45	cyclictest	189740	-21	ssh	21:10:23	0
157876	99	63	51,9	cyclictest	37	-21	kcompactd0	23:01:07	1
157875	99	63	55,6	cyclictest	177094	-21	kworker/u4:10+events_unbound	20:25:43	0
157875	99	63	48,7	cyclictest	155372	-21	kworker/u4:2+events_unbound	19:10:01	0
157875	99	63	48,7	cyclictest	155372	-21	kworker/u4:2+events_unbound	19:10:00	0
157875	99	63	23,28	cyclictest	256	50	irq/23-42890000.ethernet	19:50:07	0
157875	99	63	23,28	cyclictest	256	50	irq/23-42890000.ethernet	19:50:06	0
157875	99	62	54,6	cyclictest	365296	-21	kworker/u4:8+events_unbound	00:33:49	0
157875	99	62	52,4	cyclictest	179634	-21	kworker/u4:12+events_unbound	21:25:00	0
157875	99	61	50,8	cyclictest	37	-21	kcompactd0	21:58:52	0
157875	99	59	52,5	cyclictest	272303	-21	kworker/u4:12+events_unbound	22:50:01	0
157875	99	59	51,6	cyclictest	317	-21	systemd-journal	23:31:21	0
157876	99	58	22,14	cyclictest	275302	-21	sed	22:45:37	1
157876	99	58	19,17	cyclictest	315031	-21	ntpq	23:30:28	1
157875	99	58	49,6	cyclictest	345964	-21	gltestperf	00:05:25	0
157876	99	57	43,9	cyclictest	234049	-21	latency_hist	22:00:02	1
157875	99	57	52,3	cyclictest	227624	-21	kworker/u4:0+events_unbound	22:10:02	0
157875	99	57	52,3	cyclictest	227624	-21	kworker/u4:0+events_unbound	22:10:02	0
157876	99	56	49,5	cyclictest	256859	-21	fschecks_time	22:25:19	1
157876	99	56	45,8	cyclictest	179378	-21	switchtime	20:30:38	1
157875	99	56	48,6	cyclictest	157871	-21	cyclictest	19:35:31	0
157875	99	56	36,7	cyclictest	316826	-21	kworker/u4:14+events_unbound	23:48:00	0
157876	99	55	47,6	cyclictest	282828	-21	modprobe	22:55:00	1
157876	99	54	47,5	cyclictest	182673	-21	sed	20:45:23	1
157876	99	54	46,5	cyclictest	0	-21	swapper/1	00:20:08	1
157876	99	54	43,8	cyclictest	165315	-21	timerwakeupswit	19:35:37	1
157876	99	53	47,4	cyclictest	244094	-21	processes	22:10:38	1
157876	99	53	45,5	cyclictest	207557	-21	fschecks_count	21:30:22	1
157876	99	53	44,7	cyclictest	294275	-21	kworker/u4:1+events_unbound	23:11:16	1
157876	99	53	15,12	cyclictest	354993	-21	ntpq	00:15:22	1
157875	99	53	45,6	cyclictest	213857	-21	kworker/u4:5+events_unbound	21:40:03	0
157875	99	53	30,19	cyclictest	0	-21	swapper/0	21:50:11	0
157876	99	52	42,8	cyclictest	157882	-21	grep	19:10:01	1
157876	99	52	42,8	cyclictest	157882	-21	grep	19:10:01	1
157876	99	52	21,13	cyclictest	378	-21	dbus-daemon	20:00:38	1
157876	99	52	18,11	cyclictest	344320	-21	ssh	00:03:43	1
157876	99	52	14,29	cyclictest	0	-21	swapper/1	22:15:35	1
157875	99	52	45,5	cyclictest	343307	-21	kworker/u4:6+events_unbound	00:03:39	0
157875	99	52	45,5	cyclictest	200093	-21	kworker/u4:2+events_unbound	21:30:01	0
157875	99	52	45,5	cyclictest	200093	-21	kworker/u4:2+events_unbound	21:30:00	0
157875	99	52	42,7	cyclictest	257108	-21	/usr/sbin/munin	22:25:22	0
157875	99	52	33,17	cyclictest	175833	-21	munin-plugin-st	20:20:00	0
157875	99	52	32,18	cyclictest	0	-21	swapper/0	23:40:20	0
157876	99	51	21,6	cyclictest	292345	-21	sh	23:05:18	1
157876	99	51	19,12	cyclictest	0	-21	swapper/1	00:25:37	1
157875	99	51	43,6	cyclictest	191556	-21	kworker/u4:5+events_unbound	21:17:02	0
157875	99	51	37,12	cyclictest	0	-21	swapper/0	22:00:07	0
157875	99	51	32,17	cyclictest	160396	-21	cron	19:20:01	0
157876	99	50	43,5	cyclictest	324052	-21	ssh	23:40:34	1
157876	99	50	35,12	cyclictest	327977	-21	fschecks_count	23:45:19	1
157876	99	50	21,9	cyclictest	235134	-21	ntpq	22:00:36	1
157876	99	50	12,10	cyclictest	200042	-21	ssh	21:21:30	1
157875	99	50	38,9	cyclictest	167274	-21	fschecks_time	19:45:19	0
157875	99	50	35,5	cyclictest	303248	-21	kworker/u4:10+events_unbound	23:39:45	0
157876	99	49	36,10	cyclictest	171979	-21	kworker/u4:14+rpciod	20:22:18	1
157876	99	49	28,16	cyclictest	163884	-21	ps	19:30:38	1
157876	99	49	10,15	cyclictest	303406	-21	ssh	23:17:25	1
157875	99	49	5,38	cyclictest	0	-21	swapper/0	21:00:14	0
157875	99	49	25,8	cyclictest	258753	-21	kworker/u4:3+events_unbound	22:30:35	0
157876	99	48	9,15	cyclictest	215640	-21	ssh	21:39:40	1
157876	99	48	42,4	cyclictest	0	-21	swapper/1	19:55:37	1
157876	99	48	38,7	cyclictest	0	-21	swapper/1	00:30:08	1
157876	99	48	37,7	cyclictest	0	-21	swapper/1	22:35:32	1
157876	99	48	3,33	cyclictest	349876	-21	/usr/sbin/munin	00:10:10	1
157876	99	48	14,11	cyclictest	334919	-21	ssh	23:53:01	1
157876	99	48	11,11	cyclictest	311679	-21	ssh	23:26:26	1
157876	99	48	10,11	cyclictest	173994	-21	ntpq	20:10:25	1
157875	99	48	41,5	cyclictest	172568	-21	gltestperf	20:05:21	0
157875	99	48	40,6	cyclictest	1060	-21	sshd	00:39:26	0
157876	99	47	8,16	cyclictest	309351	-21	ssh	23:24:44	1
157876	99	47	41,4	cyclictest	175777	-21	systemd	20:15:41	1
157876	99	47	40,5	cyclictest	242867	-21	latency_hist	22:10:01	1
157876	99	47	40,5	cyclictest	242867	-21	latency_hist	22:10:01	1
157876	99	47	40,4	cyclictest	184866	-21	idleruntime-cro	20:55:00	1
157876	99	47	37,6	cyclictest	0	-21	swapper/1	00:05:38	1
157876	99	47	36,7	cyclictest	203050	-21	fschecks_time	21:25:21	1
157876	99	47	36,7	cyclictest	203050	-21	fschecks_time	21:25:21	1
157876	99	47	15,22	cyclictest	223014	-21	ssh	21:47:10	1
157876	99	47	11,10	cyclictest	340571	-21	ssh	23:59:52	1
157876	99	47	10,13	cyclictest	197507	-21	ssh	21:19:33	1
157875	99	47	40,5	cyclictest	270191	-21	fschecks_time	22:40:18	0
157875	99	47	40,5	cyclictest	188882	-21	sh	21:10:03	0
157875	99	47	38,6	cyclictest	232219	-21	kworker/u4:5+events_unbound	22:11:45	0
157876	99	46	8,13	cyclictest	285009	-21	ssh	22:56:28	1
157876	99	46	8,13	cyclictest	263466	-21	ssh	22:32:31	1
157876	99	46	7,15	cyclictest	271383	-21	ssh	22:41:02	1
157876	99	46	40,4	cyclictest	226458	-21	unixbench_multi	21:50:40	1
157876	99	46	39,5	cyclictest	191557	-21	kworker/u4:7+events_unbound	21:13:45	1
157875	99	46	39,5	cyclictest	154167	-21	kworker/u4:0+events_unbound	20:10:42	0
157875	99	46	38,6	cyclictest	163460	-21	fschecks_time	19:30:21	0
157875	99	46	37,6	cyclictest	0	-21	swapper/0	19:25:30	0
157875	99	46	35,6	cyclictest	0	-21	swapper/0	23:00:14	0
157875	99	46	26,17	cyclictest	0	-21	swapper/0	20:25:00	0
157876	99	45	8,12	cyclictest	372103	-21	ssh	00:35:10	1
157876	99	45	5,30	cyclictest	319395	-21	ssh	23:35:24	1
157876	99	45	38,5	cyclictest	161454	-21	awk	19:20:36	1
157876	99	45	37,6	cyclictest	188500	-21	switchtime	21:05:38	1
157876	99	45	35,7	cyclictest	182302	-21	latency_hist	20:45:01	1
157875	99	45	24,19	cyclictest	0	-21	swapper/0	19:55:36	0
157875	99	45	1,35	cyclictest	337089	-21	irqstats	23:55:21	0
157876	99	44	36,5	cyclictest	0	-21	swapper/1	20:05:39	1
157876	99	44	35,6	cyclictest	159101	-21	kworker/u4:4+events_unbound	19:40:32	1
157876	99	44	34,7	cyclictest	158368	-21	fschecks_time	19:10:17	1
157875	99	44	37,5	cyclictest	263258	-21	kworker/u4:11+events_unbound	22:35:04	0
157875	99	44	37,5	cyclictest	158768	-21	sendmail_mailqu	19:10:35	0
157875	99	44	37,5	cyclictest	136694	-21	kworker/u4:12+events_unbound	19:25:00	0
157876	99	43	8,9	cyclictest	186976	-21	ntpq	21:00:32	1
157876	99	43	6,13	cyclictest	185680	-21	ntpq	20:55:35	1
157876	99	43	36,5	cyclictest	180020	-21	df_abs	20:35:16	1
157876	99	43	33,7	cyclictest	163077	-21	latency_hist	19:30:00	1
157875	99	43	38,4	cyclictest	294272	-21	kworker/u4:0+events_unbound	23:13:44	0
157875	99	43	34,7	cyclictest	171035	-21	aten_r7power_vo	20:00:13	0
157876	99	42	11,8	cyclictest	159847	-21	ntpq	19:15:24	1
157875	99	42	32,8	cyclictest	166488	-21	sendmail_mailtr	19:40:39	0
157876	99	41	32,7	cyclictest	178120	-21	switchtime	20:25:39	1
157875	99	41	35,4	cyclictest	174519	-21	kworker/u4:15+events_unbound	20:40:46	0
157875	99	39	18,18	cyclictest	184046	-21	fschecks_time	20:50:19	0
157875	99	38	29,6	cyclictest	185349	-21	fschecks_time	20:55:21	0
157875	99	36	28,6	cyclictest	0	-21	swapper/0	20:30:22	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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