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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 Sun Jul 19, 2026 12:45:04)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
25345	2	111	0,6	chrt	25342	-21	aten2.4-expect	09:25:17	1
8667	99	110	9,77	cyclictest	0	-21	swapper/0	07:25:14	0
8667	99	109	9,85	cyclictest	0	-21	swapper/0	09:05:14	0
8674	99	107	80,16	cyclictest	27682	-21	kworker/1:0	10:25:14	1
8667	99	106	54,31	cyclictest	0	-21	swapper/0	12:25:13	0
8674	99	105	78,17	cyclictest	26	-21	ksoftirqd/1	08:30:15	1
8674	99	104	73,19	cyclictest	26	-21	ksoftirqd/1	11:55:12	1
8674	99	104	71,18	cyclictest	26	-21	ksoftirqd/1	08:10:15	1
8674	99	102	71,21	cyclictest	26	-21	ksoftirqd/1	11:05:14	1
8674	99	98	68,18	cyclictest	26	-21	ksoftirqd/1	09:45:14	1
8674	99	95	64,20	cyclictest	26	-21	ksoftirqd/1	09:20:24	1
8674	99	95	59,21	cyclictest	26	-21	ksoftirqd/1	08:40:24	1
8674	99	94	63,21	cyclictest	26	-21	ksoftirqd/1	10:00:13	1
8280	2	94	20,28	sleep0	0	-21	swapper/0	07:07:49	0
8674	99	93	61,20	cyclictest	26	-21	ksoftirqd/1	09:55:15	1
8667	99	93	11,64	cyclictest	0	-21	swapper/0	08:45:12	0
8674	99	92	62,20	cyclictest	26	-21	ksoftirqd/1	11:15:11	1
8674	99	90	9,73	cyclictest	18344	-21	kworker/1:0	12:10:12	1
8667	99	90	47,27	cyclictest	14	-21	ksoftirqd/0	09:35:14	0
8760	2	88	0,6	sleep0	0	-21	swapper/0	11:40:22	0
8674	99	87	55,19	cyclictest	26	-21	ksoftirqd/1	09:40:24	1
8674	99	87	54,20	cyclictest	26	-21	ksoftirqd/1	08:45:13	1
8674	99	86	54,21	cyclictest	26	-21	ksoftirqd/1	09:50:10	1
8674	99	86	48,24	cyclictest	26	-21	ksoftirqd/1	07:50:14	1
8667	99	85	54,17	cyclictest	14	-21	ksoftirqd/0	10:25:34	0
8674	99	84	48,23	cyclictest	26	-21	ksoftirqd/1	12:15:14	1
8674	99	83	48,22	cyclictest	26	-21	ksoftirqd/1	07:30:16	1
8674	99	83	28,43	cyclictest	0	-21	swapper/1	07:10:14	1
8674	99	82	23,48	cyclictest	0	-21	swapper/1	10:30:13	1
8674	99	82	16,52	cyclictest	0	-21	swapper/1	12:25:16	1
8674	99	81	48,21	cyclictest	26	-21	ksoftirqd/1	12:00:13	1
8674	99	81	48,21	cyclictest	26	-21	ksoftirqd/1	11:45:14	1
8674	99	81	12,54	cyclictest	0	-21	swapper/1	10:20:13	1
8667	99	81	7,53	cyclictest	0	-21	swapper/0	10:20:12	0
8674	99	80	49,20	cyclictest	26	-21	ksoftirqd/1	12:20:14	1
8674	99	80	46,22	cyclictest	26	-21	ksoftirqd/1	11:25:16	1
8674	99	80	46,22	cyclictest	26	-21	ksoftirqd/1	08:05:16	1
8674	99	80	43,24	cyclictest	26	-21	ksoftirqd/1	10:55:12	1
8674	99	80	40,28	cyclictest	26	-21	ksoftirqd/1	09:10:11	1
8667	99	80	45,19	cyclictest	14	-21	ksoftirqd/0	09:43:52	0
8674	99	79	42,25	cyclictest	26	-21	ksoftirqd/1	08:55:14	1
8674	99	79	36,32	cyclictest	26	-21	ksoftirqd/1	11:00:23	1
8674	99	79	22,44	cyclictest	0	-21	swapper/1	08:25:16	1
8674	99	79	12,53	cyclictest	0	-21	swapper/1	11:35:12	1
8674	99	78	21,46	cyclictest	0	-21	swapper/1	07:25:12	1
8674	99	78	21,45	cyclictest	0	-21	swapper/1	07:55:14	1
8674	99	78	18,30	cyclictest	36	-21	kcompactd0	12:09:05	1
8674	99	78	11,54	cyclictest	0	-21	swapper/1	08:15:13	1
8674	99	77	47,18	cyclictest	26	-21	ksoftirqd/1	09:15:12	1
8674	99	77	41,25	cyclictest	26	-21	ksoftirqd/1	11:50:13	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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