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 50 highest latencies:

System rack7slot2.osadl.org (updated Fri Apr 10, 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
208109	99	100	93,5	cyclictest	206835	-21	kworker/u4:0+events_unbound	07:34:57	0
208109	99	97	90,5	cyclictest	198180	-21	kworker/u4:21+events_unbound	08:20:02	0
208109	99	97	90,5	cyclictest	198180	-21	kworker/u4:21+events_unbound	08:20:02	0
208109	99	90	83,5	cyclictest	235154	-21	kworker/u4:17+events_unbound	08:55:09	0
208109	99	88	73,13	cyclictest	53	-21	kswapd0	11:40:08	0
208109	99	85	79,5	cyclictest	210618	-21	kworker/u4:17+events_unbound	07:49:59	0
208109	99	85	78,5	cyclictest	464	-21	kworker/u4:4+events_unbound	08:30:04	0
208109	99	83	76,5	cyclictest	346372	-21	kworker/u4:6+events_unbound	11:20:36	0
208109	99	82	75,5	cyclictest	233884	-21	kworker/u4:12+events_unbound	09:05:10	0
208110	99	79	70,6	cyclictest	53	-21	kswapd0	09:55:19	1
208110	99	79	56,5	cyclictest	376711	-21	kworker/u4:5+events_unbound	12:25:49	1
208110	99	78	67,9	cyclictest	293811	-21	kworker/u4:5+events_unbound	10:15:24	1
208110	99	76	26,6	cyclictest	0	-21	swapper/1	12:35:11	1
208110	99	75	7,23	cyclictest	414982	-21	ssh	12:30:42	1
208110	99	75	25,8	cyclictest	0	-21	swapper/1	09:10:10	1
208110	99	75	25,8	cyclictest	0	-21	swapper/1	09:10:10	1
208109	99	73	66,5	cyclictest	217111	-21	kworker/u4:6+events_unbound	08:40:05	0
208110	99	71	42,26	cyclictest	362200	-21	/usr/sbin/munin	11:30:20	1
208110	99	71	38,29	cyclictest	328080	-21	sh	10:50:40	1
208110	99	71	32,36	cyclictest	393445	-21	unixbench_singl	12:05:41	1
208110	99	71	28,4	cyclictest	0	-21	swapper/1	11:10:27	1
208110	99	70	34,32	cyclictest	0	-21	swapper/1	10:55:39	1
208110	99	69	36,31	cyclictest	387921	-21	basename	12:00:26	1
208110	99	69	27,5	cyclictest	0	-21	swapper/1	09:40:24	1
208109	99	69	48,5	cyclictest	281162	-21	kworker/u4:0+events_unbound	10:06:43	0
208110	99	68	31,35	cyclictest	212540	-21	head	07:25:20	1
208110	99	68	29,5	cyclictest	398906	-21	kworker/u4:14-xprtiod	12:15:28	1
208110	99	68	29,34	cyclictest	368493	-21	kworker/u4:12-rpciod	11:50:01	1
208110	99	68	28,6	cyclictest	241735	-21	kworker/u4:24-rpciod	09:35:32	1
208109	99	68	34,22	cyclictest	387797	-21	ssh	12:00:10	0
208110	99	67	31,5	cyclictest	0	-21	swapper/1	09:30:20	1
208110	99	67	28,5	cyclictest	0	-21	swapper/1	11:15:36	1
208110	99	66	5,15	cyclictest	312088	-21	ssh	10:33:00	1
208110	99	66	35,28	cyclictest	357415	-21	aten_r7power_po	11:25:18	1
208110	99	66	34,29	cyclictest	232788	-21	systemd	08:45:04	1
208110	99	66	31,32	cyclictest	0	-21	swapper/1	10:45:32	1
208110	99	65	58,5	cyclictest	221005	-21	kworker/u4:15+events_unbound	08:20:00	1
208110	99	65	34,28	cyclictest	298242	-21	kworker/u4:14-rpciod	10:20:23	1
208110	99	65	32,4	cyclictest	302706	-21	kworker/u4:7-rpciod	10:25:21	1
208110	99	65	31,4	cyclictest	328627	-21	kworker/u4:11-rpciod	11:05:44	1
208110	99	65	30,6	cyclictest	0	-21	swapper/1	09:25:40	1
208110	99	65	30,5	cyclictest	231314	-21	kworker/u4:5-rpciod	09:20:20	1
208110	99	65	27,4	cyclictest	0	-21	swapper/1	07:10:11	1
208110	99	65	27,10	cyclictest	0	-21	swapper/1	08:00:24	1
208110	99	64	31,7	cyclictest	405384	-21	aten_r7power_po	12:20:15	1
208110	99	64	29,4	cyclictest	0	-21	swapper/1	11:40:36	1
208110	99	63	34,25	cyclictest	0	-21	swapper/1	11:50:31	1
208110	99	63	31,5	cyclictest	241735	-21	kworker/u4:24-rpciod	10:10:39	1
208110	99	63	31,5	cyclictest	241735	-21	kworker/u4:24-rpciod	10:10:39	1
208110	99	63	31,4	cyclictest	376711	-21	kworker/u4:5-nfsiod	11:55:16	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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