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Default latency plot of system in rack #3, slot #6

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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 50 highest latencies:

System rack3slot6.osadl.org (updated Thu May 07, 2026 00:45:03)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
17572	99	117	91,13	cyclictest	18965	-21	kworker/1:1	22:25:13	1
17567	99	111	10,78	cyclictest	0	-21	swapper/0	23:55:12	0
17572	99	104	75,19	cyclictest	26	-21	ksoftirqd/1	21:35:11	1
17572	99	101	75,17	cyclictest	26	-21	ksoftirqd/1	20:05:14	1
17572	99	100	73,18	cyclictest	26	-21	ksoftirqd/1	20:15:12	1
17572	99	98	68,19	cyclictest	26	-21	ksoftirqd/1	19:50:11	1
17572	99	98	65,18	cyclictest	26	-21	ksoftirqd/1	22:10:13	1
17572	99	97	66,20	cyclictest	26	-21	ksoftirqd/1	22:00:13	1
17572	99	97	64,22	cyclictest	26	-21	ksoftirqd/1	23:50:13	1
17572	99	97	63,20	cyclictest	26	-21	ksoftirqd/1	00:25:12	1
17572	99	95	67,18	cyclictest	26	-21	ksoftirqd/1	20:35:12	1
17572	99	93	63,20	cyclictest	26	-21	ksoftirqd/1	20:55:24	1
17572	99	93	62,20	cyclictest	26	-21	ksoftirqd/1	23:05:15	1
17572	99	92	63,20	cyclictest	26	-21	ksoftirqd/1	22:45:14	1
17572	99	91	62,19	cyclictest	26	-21	ksoftirqd/1	19:10:11	1
17572	99	90	60,17	cyclictest	26	-21	ksoftirqd/1	20:45:12	1
17572	99	90	58,21	cyclictest	26	-21	ksoftirqd/1	21:40:12	1
17572	99	90	58,21	cyclictest	26	-21	ksoftirqd/1	21:40:12	1
17572	99	90	57,22	cyclictest	26	-21	ksoftirqd/1	20:50:14	1
2608	2	89	0,5	sleep0	2609	-21	fw_packets	00:30:22	0
17572	99	88	59,18	cyclictest	26	-21	ksoftirqd/1	00:15:12	1
17572	99	87	60,19	cyclictest	26	-21	ksoftirqd/1	19:35:13	1
17572	99	87	57,19	cyclictest	26	-21	ksoftirqd/1	00:30:13	1
17567	99	85	40,26	cyclictest	503	-21	snmpd	19:54:48	0
17572	99	82	40,29	cyclictest	26	-21	ksoftirqd/1	22:05:12	1
17572	99	81	49,19	cyclictest	26	-21	ksoftirqd/1	20:20:13	1
17567	99	81	6,56	cyclictest	0	-21	swapper/0	23:15:13	0
17572	99	80	48,20	cyclictest	26	-21	ksoftirqd/1	22:30:15	1
17572	99	80	46,27	cyclictest	26	-21	ksoftirqd/1	00:35:11	1
17572	99	78	44,21	cyclictest	26	-21	ksoftirqd/1	22:20:12	1
17572	99	78	10,53	cyclictest	562	-21	runrttasks	19:15:12	1
17572	99	77	46,20	cyclictest	26	-21	ksoftirqd/1	00:10:13	1
17572	99	77	38,25	cyclictest	26	-21	ksoftirqd/1	00:05:13	1
17224	2	77	18,50	sleep0	0	-21	swapper/0	19:08:23	0
17224	2	77	18,50	sleep0	0	-21	swapper/0	19:08:23	0
17572	99	76	43,20	cyclictest	26	-21	ksoftirqd/1	23:35:13	1
17567	99	76	42,21	cyclictest	14	-21	ksoftirqd/0	20:40:33	0
17567	99	76	42,21	cyclictest	14	-21	ksoftirqd/0	20:40:33	0
17572	99	75	12,51	cyclictest	0	-21	swapper/1	20:30:13	1
17572	99	75	10,50	cyclictest	28600	-21	diskmemload	21:10:15	1
17567	99	75	7,58	cyclictest	8924	-21	apt-get	21:45:11	0
17567	99	75	7,22	cyclictest	0	-21	swapper/0	23:30:12	0
17572	99	74	8,51	cyclictest	562	-21	runrttasks	21:00:13	1
17572	99	73	38,21	cyclictest	26	-21	ksoftirqd/1	23:25:25	1
17567	99	73	33,26	cyclictest	14	-21	ksoftirqd/0	20:25:16	0
17572	99	72	39,23	cyclictest	26	-21	ksoftirqd/1	23:45:11	1
17572	99	72	39,22	cyclictest	0	-21	swapper/1	21:50:13	1
17572	99	72	38,20	cyclictest	0	-21	swapper/1	21:25:14	1
17572	99	72	12,47	cyclictest	0	-21	swapper/1	00:00:15	1
17572	99	71	12,46	cyclictest	26	-21	ksoftirqd/1	23:30:15	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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