OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #7, slot #2

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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 Sat May 09, 2026 00:44:07)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
978196	99	103	95,6	cyclictest	969523	-21	kworker/u4:15+events_unbound	20:01:25	1
978196	99	103	95,6	cyclictest	969523	-21	kworker/u4:15+events_unbound	20:01:24	1
978196	99	99	91,6	cyclictest	1003886	-21	kworker/u4:10+events_unbound	20:47:30	1
978196	99	99	85,6	cyclictest	1038383	-21	kworker/u4:7+events_unbound	22:12:42	1
978196	99	98	91,5	cyclictest	989824	-21	kworker/u4:14+events_unbound	20:37:28	1
978196	99	97	81,6	cyclictest	992386	-21	kworker/u4:3+events_unbound	20:57:32	1
978196	99	94	88,4	cyclictest	1020314	-21	kworker/u4:9+events_unbound	21:22:35	1
978196	99	92	85,5	cyclictest	989824	-21	kworker/u4:14+events_unbound	20:42:30	1
978196	99	90	83,5	cyclictest	1126775	-21	kworker/u4:0+events_unbound	23:22:54	1
978196	99	88	81,5	cyclictest	992386	-21	kworker/u4:3+events_unbound	21:07:33	1
978196	99	87	80,5	cyclictest	992396	-21	kworker/u4:6+events_unbound	20:17:26	1
978196	99	87	80,5	cyclictest	969526	-21	kworker/u4:19+events_unbound	19:42:18	1
978196	99	84	77,5	cyclictest	1016434	-21	kworker/u4:7+events_unbound	21:17:34	1
978196	99	84	76,6	cyclictest	979414	-21	kworker/u4:3+events_unbound	19:12:13	1
978196	99	81	74,5	cyclictest	992396	-21	kworker/u4:6+events_unbound	20:22:26	1
978196	99	81	74,5	cyclictest	969526	-21	kworker/u4:19+events_unbound	19:47:18	1
978196	99	76	68,6	cyclictest	979425	-21	kworker/u4:4+events_unbound	19:27:15	1
978195	99	76	65,8	cyclictest	1077335	-21	sed	22:25:38	0
978196	99	75	62,5	cyclictest	979426	-21	kworker/u4:5+events_unbound	19:17:14	1
978196	99	70	63,5	cyclictest	979413	-21	kworker/u4:0+events_unbound	20:07:21	1
978196	99	68	3,50	cyclictest	1146956	-21	ssh	23:45:32	1
978195	99	68	32,12	cyclictest	995125	-21	apt-get	20:15:11	0
978195	99	68	28,12	cyclictest	1060047	-21	ssh	22:06:13	0
978195	99	68	22,22	cyclictest	1150838	-21	ssh	23:50:19	0
978195	99	67	60,5	cyclictest	1120204	-21	ssh	23:15:18	0
978195	99	67	30,10	cyclictest	1082731	-21	ssh	22:32:03	0
978195	99	67	26,13	cyclictest	1050212	-21	ntpq	21:55:28	0
978196	99	66	59,5	cyclictest	1002614	-21	kworker/u4:7+events_unbound	21:05:01	1
978195	99	66	33,5	cyclictest	983554	-21	apt-get	19:30:17	0
978195	99	66	27,14	cyclictest	1055848	-21	ssh	22:01:36	0
978195	99	65	26,14	cyclictest	1023468	-21	ntpq	21:25:25	0
978195	99	65	25,14	cyclictest	1186761	-21	ssh	00:31:00	0
978195	99	65	25,13	cyclictest	1142570	-21	ntpq	23:40:30	0
978195	99	65	23,16	cyclictest	1166802	-21	ssh	00:08:45	0
978195	99	65	20,24	cyclictest	1014638	-21	ld	21:15:30	0
978195	99	65	14,26	cyclictest	1191035	-21	ssh	00:35:56	0
978195	99	64	31,9	cyclictest	998315	-21	ntpq	20:25:29	0
978195	99	64	27,10	cyclictest	1129630	-21	ntpq	23:25:32	0
978195	99	64	26,13	cyclictest	1003388	-21	ntpq	20:45:25	0
978195	99	64	26,11	cyclictest	1002133	-21	ntpq	20:40:29	0
978195	99	64	25,12	cyclictest	1066608	-21	ssh	22:14:34	0
978195	99	64	25,11	cyclictest	1030318	-21	ssh	21:33:25	0
978195	99	64	21,22	cyclictest	980773	-21	kworker/u4:15	19:20:01	0
978195	99	64	21,21	cyclictest	1032543	-21	collect2	21:35:35	0
978195	99	64	21,10	cyclictest	1022503	-21	munin-run	21:25:00	0
978196	99	63	55,6	cyclictest	989824	-21	kworker/u4:14+events_unbound	20:10:01	1
978195	99	63	43,17	cyclictest	1172200	-21	apt-get	00:15:12	0
978195	99	63	25,13	cyclictest	1162063	-21	ssh	00:03:03	0
978195	99	63	25,11	cyclictest	1150178	-21	ssh	23:49:53	0
978195	99	63	25,11	cyclictest	1047888	-21	ssh	21:53:03	0
978195	99	63	22,16	cyclictest	985375	-21	ntpq	19:35:23	0
978195	99	63	19,20	cyclictest	1010091	-21	ntpq	21:10:24	0
978195	99	63	18,20	cyclictest	989996	-21	modprobe	19:55:01	0
978195	99	63	15,23	cyclictest	1168998	-21	find	00:10:39	0
978196	99	62	55,5	cyclictest	1143851	-21	kworker/u4:17+events_unbound	00:28:36	1
978195	99	62	29,7	cyclictest	1154866	-21	apt-get	23:55:13	0
978195	99	62	26,10	cyclictest	994472	-21	ntpq	20:10:30	0
978195	99	62	24,14	cyclictest	1074000	-21	ssh	22:22:13	0
978195	99	62	23,14	cyclictest	1115778	-21	apt-get	23:10:14	0
978195	99	62	22,14	cyclictest	1179372	-21	ssh	00:23:03	0
978195	99	62	22,14	cyclictest	1042586	-21	ssh	21:46:44	0
978195	99	62	19,21	cyclictest	1103724	-21	find	22:55:37	0
978195	99	62	16,25	cyclictest	1036499	-21	rm	21:40:18	0
978195	99	62	16,23	cyclictest	0	-21	swapper/0	22:50:17	0
978195	99	61	40,14	cyclictest	1137469	-21	apt-get	23:35:11	0
978195	99	61	30,26	cyclictest	1111200	-21	apt-get	23:05:10	0
978195	99	61	29,10	cyclictest	1067212	-21	ssh	22:15:15	0
978195	99	61	25,20	cyclictest	0	-21	swapper/0	00:25:17	0
978195	99	61	24,14	cyclictest	1086688	-21	ssh	22:36:18	0
978195	99	61	24,11	cyclictest	37	-21	kcompactd0	22:41:04	0
978195	99	61	23,14	cyclictest	983302	-21	latency_hist	19:30:00	0
978195	99	61	23,12	cyclictest	1125882	-21	ssh	23:20:50	0
978195	99	60	24,10	cyclictest	1107754	-21	ntpq	23:00:26	0
978195	99	60	22,14	cyclictest	1005893	-21	ntpq	20:55:24	0
978195	99	60	14,25	cyclictest	1096074	-21	ssh	22:47:08	0
978196	99	59	45,5	cyclictest	989825	-21	kworker/u4:16+events_unbound	20:34:02	1
978195	99	59	42,12	cyclictest	996987	-21	ntpq	20:20:25	0
978195	99	59	38,16	cyclictest	987388	-21	apt-get	19:45:13	0
978195	99	59	23,11	cyclictest	1004624	-21	ntpq	20:50:23	0
978195	99	59	21,13	cyclictest	1136185	-21	ssh	23:33:23	0
978195	99	58	25,24	cyclictest	989862	-21	modprobe	19:55:00	0
978195	99	58	25,10	cyclictest	993218	-21	ntpq	20:05:29	0
978196	99	57	43,9	cyclictest	0	-21	swapper/1	22:20:37	1
978195	99	57	41,11	cyclictest	986667	-21	ntpq	19:40:23	0
978196	99	56	48,6	cyclictest	969523	-21	kworker/u4:15+events_unbound	19:58:40	1
978195	99	56	22,10	cyclictest	1007280	-21	ntpq	21:00:34	0
978195	99	56	21,10	cyclictest	981567	-21	ntp_states	19:20:30	0
978195	99	56	21,10	cyclictest	1000784	-21	ntpq	20:35:22	0
978195	99	56	20,10	cyclictest	1008356	-21	perl	21:05:18	0
978195	99	56	17,10	cyclictest	991853	-21	ntpq	20:00:23	0
978195	99	56	17,10	cyclictest	991853	-21	ntpq	20:00:22	0
978196	99	55	49,4	cyclictest	979413	-21	kworker/u4:0+events_unbound	19:20:03	1
978196	99	55	46,7	cyclictest	1076719	-21	/usr/sbin/munin	22:25:22	1
978196	99	55	46,6	cyclictest	1173301	-21	/usr/sbin/munin	00:15:38	1
978195	99	55	29,8	cyclictest	978910	-21	ntpq	19:10:26	0
978195	99	55	19,11	cyclictest	998974	-21	dpkg	20:30:12	0
978196	99	54	48,4	cyclictest	0	-21	swapper/1	22:45:26	1
978196	99	54	47,5	cyclictest	1187282	-21	kworker/u4:2+events_unbound	00:33:52	1
978196	99	54	43,6	cyclictest	1033862	-21	kworker/u4:10+events_unbound	21:42:00	1
978196	99	53	45,6	cyclictest	1161496	-21	kworker/u4:9+events_unbound	00:04:00	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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