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 Tue Feb 03, 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
850723	99	106	99,6	cyclictest	842052	-21	kworker/u4:18+events_unbound	07:58:59	1
850723	99	106	93,5	cyclictest	874958	-21	kworker/u4:6+events_unbound	08:54:02	1
850723	99	103	90,5	cyclictest	868652	-21	kworker/u4:12+events_unbound	08:29:01	1
850723	99	102	96,4	cyclictest	1054456	-21	kworker/u4:5+events_unbound	12:39:40	1
850723	99	102	95,5	cyclictest	869908	-21	kworker/u4:13+events_unbound	08:34:01	1
850723	99	101	94,5	cyclictest	855817	-21	kworker/u4:13+events_unbound	07:33:58	1
850723	99	99	92,5	cyclictest	848242	-21	kworker/u4:5+events_unbound	08:04:01	1
850723	99	98	91,5	cyclictest	851929	-21	kworker/u4:4+events_unbound	07:48:59	1
850723	99	97	90,5	cyclictest	1050089	-21	kworker/u4:8+events_unbound	12:29:39	1
850723	99	91	84,5	cyclictest	1028890	-21	kworker/u4:15+events_unbound	12:09:35	1
850723	99	87	78,7	cyclictest	1002731	-21	kworker/u4:1+events_unbound	11:39:25	1
850723	99	85	78,5	cyclictest	853184	-21	kworker/u4:9+events_unbound	07:28:55	1
850723	99	84	77,5	cyclictest	848243	-21	kworker/u4:6+events_unbound	07:38:58	1
850722	99	84	75,6	cyclictest	1011460	-21	kworker/u4:4+xprtiod	11:50:11	0
850723	99	81	73,6	cyclictest	874958	-21	kworker/u4:6+events_unbound	09:04:02	1
850722	99	75	33,22	cyclictest	875156	-21	apt-get	08:50:12	0
850722	99	74	60,10	cyclictest	54	-21	kswapd0	11:00:12	0
850723	99	73	9,51	cyclictest	953507	-21	ssh	10:35:15	1
850722	99	71	43,24	cyclictest	880340	-21	apt-get	09:10:13	0
850722	99	70	19,26	cyclictest	904398	-21	sshd	09:37:33	0
850723	99	67	60,5	cyclictest	867357	-21	kworker/u4:1+events_unbound	08:17:01	1
850722	99	66	23,10	cyclictest	886751	-21	cron	09:17:01	0
850722	99	66	23,10	cyclictest	886751	-21	cron	09:17:00	0
850722	99	66	21,10	cyclictest	1057246	-21	ntpq	12:35:26	0
850723	99	65	58,5	cyclictest	848242	-21	kworker/u4:5+events_unbound	07:18:55	1
850722	99	65	39,22	cyclictest	1030718	-21	apt-get	12:05:11	0
850722	99	64	38,21	cyclictest	1026447	-21	apt-get	12:00:12	0
850722	99	63	54,7	cyclictest	1054462	-21	kworker/u4:12+events_unbound	12:34:39	0
850722	99	63	25,25	cyclictest	0	-21	swapper/0	10:00:36	0
850722	99	62	49,8	cyclictest	0	-21	swapper/0	10:40:31	0
850722	99	62	45,13	cyclictest	857275	-21	apt-get	07:35:11	0
850722	99	62	25,9	cyclictest	917766	-21	ssh	09:53:20	0
850722	99	62	24,13	cyclictest	971417	-21	ntpq	10:55:31	0
850722	99	62	24,13	cyclictest	971417	-21	ntpq	10:55:30	0
850722	99	62	24,10	cyclictest	969219	-21	ssh	10:53:10	0
850722	99	62	24,10	cyclictest	898959	-21	ssh	09:30:43	0
850722	99	62	23,14	cyclictest	1012708	-21	ssh	11:44:06	0
850722	99	62	23,13	cyclictest	930134	-21	ssh	10:07:27	0
850722	99	62	20,10	cyclictest	878252	-21	ntpq	09:00:25	0
850722	99	62	19,20	cyclictest	1009158	-21	latency_hist	11:40:02	0
850723	99	61	53,6	cyclictest	1014712	-21	/usr/sbin/munin	11:45:39	1
850722	99	61	43,13	cyclictest	1022125	-21	apt-get	11:55:13	0
850722	99	61	39,18	cyclictest	869417	-21	ntpq	08:25:23	0
850722	99	61	23,14	cyclictest	1045040	-21	ssh	12:20:48	0
850722	99	61	22,15	cyclictest	855300	-21	ntpq	07:25:23	0
850722	99	61	22,14	cyclictest	908609	-21	ssh	09:42:21	0
850722	99	61	22,14	cyclictest	870454	-21	perl	08:30:19	0
850722	99	61	22,14	cyclictest	1014764	-21	ssh	11:45:40	0
850722	99	61	22,13	cyclictest	914388	-21	ssh	09:49:50	0
850722	99	61	21,14	cyclictest	987266	-21	ssh	11:14:39	0
850722	99	61	21,14	cyclictest	877012	-21	ntpq	08:55:28	0
850722	99	61	20,18	cyclictest	962660	-21	irqstats	10:45:24	0
850722	99	60	42,14	cyclictest	0	-21	swapper/0	09:55:14	0
850722	99	60	42,14	cyclictest	0	-21	swapper/0	09:55:14	0
850722	99	60	39,17	cyclictest	852131	-21	apt-get	07:15:11	0
850722	99	60	29,14	cyclictest	949524	-21	/usr/sbin/munin	10:30:21	0
850722	99	60	24,13	cyclictest	879481	-21	ntpq	09:05:22	0
850722	99	60	22,13	cyclictest	940641	-21	apt-get	10:20:15	0
850722	99	60	22,13	cyclictest	938976	-21	ssh	10:17:51	0
850722	99	60	22,13	cyclictest	895518	-21	ssh	09:27:06	0
850722	99	60	21,14	cyclictest	995175	-21	ssh	11:23:30	0
850722	99	60	21,14	cyclictest	867736	-21	cpu	08:20:17	0
850722	99	60	18,21	cyclictest	945124	-21	cpu	10:25:19	0
850722	99	60	13,23	cyclictest	0	-21	swapper/0	10:35:28	0
850723	99	59	42,6	cyclictest	867360	-21	kworker/u4:8+events_unbound	09:05:03	1
850722	99	59	39,16	cyclictest	996668	-21	ssh	11:25:17	0
850722	99	59	22,14	cyclictest	866936	-21	ntp_states	08:15:26	0
850722	99	59	22,13	cyclictest	989190	-21	ssh	11:15:47	0
850722	99	59	22,10	cyclictest	935507	-21	ssh	10:14:10	0
850722	99	59	21,15	cyclictest	862787	-21	irqstats	07:55:22	0
850722	99	59	21,13	cyclictest	888883	-21	ssh	09:20:06	0
850722	99	59	21,12	cyclictest	873181	-21	ntpq	08:40:23	0
850722	99	59	20,15	cyclictest	859657	-21	idleruntime-cro	07:45:01	0
850722	99	59	20,14	cyclictest	861290	-21	diskstats	07:50:20	0
850722	99	59	17,19	cyclictest	0	-21	swapper/0	12:10:25	0
850722	99	58	42,12	cyclictest	1000674	-21	apt-get	11:30:12	0
850722	99	58	22,12	cyclictest	871365	-21	apt-get	08:35:15	0
850722	99	58	21,13	cyclictest	865501	-21	ntp_states	08:05:30	0
850722	99	58	20,15	cyclictest	1039419	-21	ssh	12:15:15	0
850722	99	58	17,19	cyclictest	0	-21	swapper/0	12:25:19	0
850723	99	57	49,6	cyclictest	1020146	-21	kworker/u4:5+events_unbound	12:15:58	1
850722	99	57	39,14	cyclictest	863602	-21	apt-get	08:00:11	0
850722	99	57	34,20	cyclictest	860050	-21	fschecks_count	07:45:19	0
850722	99	57	21,13	cyclictest	874438	-21	ntpq	08:45:24	0
850723	99	56	49,5	cyclictest	848244	-21	kworker/u4:7+events_unbound	07:24:00	1
850723	99	56	47,6	cyclictest	987062	-21	sshd	11:14:18	1
850723	99	56	47,6	cyclictest	0	-21	swapper/1	09:15:32	1
850723	99	56	47,6	cyclictest	0	-21	swapper/1	09:15:32	1
850722	99	56	20,17	cyclictest	979243	-21	ssh	11:05:12	0
850722	99	56	18,9	cyclictest	856598	-21	ntpq	07:30:27	0
850723	99	55	41,5	cyclictest	951650	-21	kworker/u4:12+events_unbound	11:02:00	1
850722	99	55	22,10	cyclictest	851970	-21	munin-run	07:15:00	0
850722	99	55	20,13	cyclictest	854070	-21	ntpq	07:20:31	0
850723	99	54	47,5	cyclictest	868652	-21	kworker/u4:12+events_unbound	08:40:02	1
850723	99	53	44,6	cyclictest	923680	-21	df_abs	10:00:16	1
850723	99	53	39,11	cyclictest	0	-21	swapper/1	09:35:28	1
850723	99	53	3,39	cyclictest	932843	-21	ssh	10:10:32	1
850723	99	53	25,15	cyclictest	17	1	rcu_preempt	07:42:39	1
850723	99	52	45,5	cyclictest	1011460	-21	kworker/u4:4+events_unbound	11:56:59	1
850723	99	51	44,5	cyclictest	914932	-21	aten_r7power_po	09:50:17	1
850723	99	51	44,5	cyclictest	848244	-21	kworker/u4:7+events_unbound	07:14:00	1
850723	99	51	44,5	cyclictest	1045719	-21	kworker/u4:5+events_unbound	12:22:00	1
850723	99	51	43,6	cyclictest	985897	-21	kworker/u4:2+events_unbound	11:21:42	1
850723	99	50	43,5	cyclictest	871162	-21	kworker/u4:14+events_unbound	08:43:59	1
850723	99	50	43,5	cyclictest	869908	-21	kworker/u4:13+events_unbound	08:45:43	1
850723	99	50	33,10	cyclictest	0	-21	swapper/1	10:56:34	1
850723	99	50	33,10	cyclictest	0	-21	swapper/1	10:56:34	1
850722	99	50	16,15	cyclictest	866136	-21	latency_hist	08:15:03	0
850723	99	49	6,28	cyclictest	962754	-21	ssh	10:45:26	1
850723	99	49	43,4	cyclictest	982779	-21	sshd	11:09:18	1
850723	99	49	42,5	cyclictest	945499	-21	/usr/sbin/munin	10:25:24	1
850723	99	49	42,5	cyclictest	907943	-21	kworker/u4:4+events_unbound	09:42:59	1
850723	99	49	42,5	cyclictest	848240	-21	kworker/u4:2+events_unbound	08:59:00	1
850723	99	49	42,5	cyclictest	848240	-21	kworker/u4:2+events_unbound	08:10:43	1
850723	99	49	40,6	cyclictest	0	-21	swapper/1	12:04:30	1
850723	99	49	37,5	cyclictest	1002731	-21	kworker/u4:1+events_unbound	11:41:59	1
850723	99	49	34,6	cyclictest	876209	-21	kworker/u4:7+events_unbound	09:28:03	1
850723	99	48	41,5	cyclictest	988819	-21	switchtime	11:15:36	1
850723	99	48	41,5	cyclictest	850732	-21	grep	07:10:01	1
850723	99	47	42,4	cyclictest	867358	-21	kworker/u4:4+events_unbound	08:25:02	1
850723	99	47	39,6	cyclictest	1002737	-21	kworker/u4:9+events_unbound	11:31:59	1
850723	99	47	39,5	cyclictest	880400	-21	ssh	09:10:18	1
850723	99	47	37,7	cyclictest	964126	-21	kworker/u4:3+rpciod	10:50:17	1
850723	99	46	40,4	cyclictest	848242	-21	kworker/u4:5+events_unbound	07:51:35	1
850723	99	46	39,5	cyclictest	958504	-21	ld	10:40:26	1
850723	99	46	34,5	cyclictest	863374	-21	kworker/u4:6+events_unbound	08:05:43	1
850723	99	45	39,4	cyclictest	944794	-21	sed	10:25:02	1
850723	99	45	39,4	cyclictest	936758	-21	gltestperf	10:15:21	1
850723	99	45	24,5	cyclictest	850721	-21	cyclictest	11:54:57	1
850723	99	45	14,14	cyclictest	27	1	ktimers/1	12:30:27	1
850723	99	45	11,24	cyclictest	911268	-21	ssh	09:45:27	1
850723	99	44	38,4	cyclictest	889278	-21	fschecks_count	09:20:20	1
850723	99	44	38,4	cyclictest	1000510	-21	latency_hist	11:30:01	1
850723	99	44	36,5	cyclictest	898886	-21	grep	09:30:39	1
850723	99	44	34,8	cyclictest	1035681	-21	ssh	12:10:25	1
850723	99	44	34,7	cyclictest	0	-21	swapper/1	10:35:01	1
850723	99	43	34,7	cyclictest	919677	-21	kernelversion	09:55:22	1
850723	99	43	34,7	cyclictest	919677	-21	kernelversion	09:55:21	1
850723	99	42	34,6	cyclictest	928087	-21	fschecks_count	10:05:22	1
850722	99	41	25,12	cyclictest	850725	-21	modprobe	07:10:01	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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