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

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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

Characteristics of the 50 highest latencies:

System rackdslot3.osadl.org (updated Sun May 03, 2026 12:45:45)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1394	91	227	165,50	phc2sys	0	-21	swapper/3	07:09:57	3
23860	2	204	170,22	sleep1	0	-21	swapper/1	07:06:15	1
24029	2	203	170,22	sleep0	0	-21	swapper/0	07:08:28	0
23948	2	203	169,23	sleep2	0	-21	swapper/2	07:07:26	2
9872	2	170	0,6	sleep3	24449	99	cyclictest	12:15:22	3
24155	2	83	63,11	sleep0	0	-21	swapper/0	07:10:01	0
24448	99	67	34,5	cyclictest	33	-21	ksoftirqd/2	10:50:00	2
24448	99	67	33,5	cyclictest	33	-21	ksoftirqd/2	11:19:59	2
24448	99	65	31,7	cyclictest	33	-21	ksoftirqd/2	12:40:00	2
24448	99	65	29,7	cyclictest	33	-21	ksoftirqd/2	12:05:12	2
24448	99	64	25,6	cyclictest	33	-21	ksoftirqd/2	07:45:18	2
24448	99	63	30,5	cyclictest	33	-21	ksoftirqd/2	09:35:16	2
24446	99	63	0,22	cyclictest	17092	-21	cut	12:30:23	0
24446	99	63	0,22	cyclictest	17092	-21	cut	12:30:23	0
24446	99	63	0,21	cyclictest	8682	-21	date	07:45:00	0
24446	99	63	0,21	cyclictest	18382	-21	date	10:20:01	0
24448	99	62	31,6	cyclictest	33	-21	ksoftirqd/2	09:45:13	2
24448	99	62	31,5	cyclictest	33	-21	ksoftirqd/2	08:20:15	2
24448	99	62	29,5	cyclictest	33	-21	ksoftirqd/2	07:25:14	2
24446	99	62	0,22	cyclictest	20759	-21	date	10:25:02	0
5545	2	61	0,6	sleep0	24446	99	cyclictest	09:50:26	0
24448	99	61	29,4	cyclictest	33	-21	ksoftirqd/2	09:10:15	2
24448	99	61	29,4	cyclictest	33	-21	ksoftirqd/2	08:45:17	2
24448	99	61	28,5	cyclictest	33	-21	ksoftirqd/2	07:15:20	2
24448	99	61	27,5	cyclictest	33	-21	ksoftirqd/2	08:20:00	2
24448	99	61	26,4	cyclictest	33	-21	ksoftirqd/2	11:05:23	2
24446	99	61	0,21	cyclictest	20499	-21	date	12:40:01	0
24446	99	61	0,21	cyclictest	17175	-21	date	09:10:01	0
24448	99	60	28,5	cyclictest	33	-21	ksoftirqd/2	12:30:15	2
24448	99	60	28,5	cyclictest	33	-21	ksoftirqd/2	12:30:15	2
24448	99	60	28,5	cyclictest	33	-21	ksoftirqd/2	10:40:24	2
24448	99	60	27,5	cyclictest	33	-21	ksoftirqd/2	12:25:26	2
24448	99	60	27,5	cyclictest	33	-21	ksoftirqd/2	10:15:24	2
24448	99	60	26,6	cyclictest	33	-21	ksoftirqd/2	11:10:23	2
24448	99	60	26,4	cyclictest	33	-21	ksoftirqd/2	11:55:26	2
24448	99	60	26,3	cyclictest	33	-21	ksoftirqd/2	08:30:18	2
24448	99	60	25,4	cyclictest	33	-21	ksoftirqd/2	09:00:25	2
24448	99	60	24,6	cyclictest	33	-21	ksoftirqd/2	08:10:17	2
24446	99	60	0,20	cyclictest	3775	-21	cat	12:05:01	0
24448	99	59	27,6	cyclictest	33	-21	ksoftirqd/2	10:10:19	2
24448	99	59	27,5	cyclictest	33	-21	ksoftirqd/2	09:50:25	2
24448	99	59	26,7	cyclictest	33	-21	ksoftirqd/2	07:30:20	2
24448	99	59	26,7	cyclictest	33	-21	ksoftirqd/2	07:30:20	2
24448	99	59	26,5	cyclictest	33	-21	ksoftirqd/2	10:50:23	2
24448	99	59	26,5	cyclictest	33	-21	ksoftirqd/2	08:40:18	2
24448	99	59	25,5	cyclictest	33	-21	ksoftirqd/2	11:25:25	2
24448	99	58	30,7	cyclictest	33	-21	ksoftirqd/2	08:05:01	2
24448	99	58	26,6	cyclictest	33	-21	ksoftirqd/2	09:15:13	2
24448	99	58	25,7	cyclictest	33	-21	ksoftirqd/2	08:55:16	2
24448	99	58	25,6	cyclictest	33	-21	ksoftirqd/2	11:30:13	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-06-15 - 15:03