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Default latency plot of system in rack #0, slot #2

Click here to display the system's profile data or here to proceed to next system.

Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.
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 rack0slot2.osadl.org (updated Sun Jan 04, 2026 12:43:31)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2670619	2	93	0,0	sleep6	0	-21	swapper/6	07:23:58	6
2628389	2	63	34,9	sleep4	0	-21	swapper/4	07:07:38	4
2628392	2	54	19,31	sleep7	0	-21	swapper/7	07:07:41	7
2628418	2	51	41,7	sleep6	0	-21	swapper/6	07:08:04	6
2628222	2	49	38,8	sleep5	0	-21	swapper/5	07:05:15	5
2628748	99	45	43,2	cyclictest	2845082	-21	kworker/u16:1+flush-8:0	09:08:28	5
2628748	99	45	43,2	cyclictest	2661570	-21	kworker/u16:2+flush-8:0	07:58:28	5
2628743	99	45	42,2	cyclictest	2998666	-21	kworker/u16:4+events_unbound	10:18:46	4
2628748	99	44	41,2	cyclictest	3183185	-21	kworker/u16:0+flush-8:0	12:28:27	5
2628748	99	42	39,2	cyclictest	2777723	-21	kworker/u16:0+flush-8:0	08:33:28	5
2628743	99	39	36,2	cyclictest	2661570	-21	kworker/u16:2+events_unbound	09:18:41	4
2628751	99	38	33,4	cyclictest	955	-21	in:imjournal	12:13:28	7
2628743	99	38	36,2	cyclictest	2729207	-21	kworker/u16:3+events_unbound	08:03:42	4
2628743	99	38	36,2	cyclictest	2661570	-21	kworker/u16:2+events_unbound	08:28:54	4
2628743	99	38	35,2	cyclictest	3240841	-21	kworker/u16:3+flush-8:0	12:33:27	4
2628748	99	37	35,2	cyclictest	3057646	-21	kworker/u16:1+flush-8:0	11:13:28	5
2628743	99	37	34,2	cyclictest	2912570	-21	kworker/u16:3+events_unbound	09:48:42	4
2628743	99	36	34,2	cyclictest	2845082	-21	kworker/u16:1+events_unbound	08:58:58	4
2628743	99	36	34,2	cyclictest	2661570	-21	kworker/u16:2+events_unbound	07:28:43	4
2628743	99	36	33,2	cyclictest	3240841	-21	kworker/u16:3+events_unbound	12:33:41	4
2628751	99	35	0,34	cyclictest	650	-21	systemd-journal	09:33:28	7
2628749	99	34	32,2	cyclictest	2628949	-21	kworker/u16:4+events_unbound	07:08:43	6
2628743	99	34	31,2	cyclictest	3076939	-21	kworker/u16:3+events_unbound	12:03:41	4
2628743	99	34	31,2	cyclictest	2729207	-21	kworker/u16:3+events_unbound	08:08:41	4
2628751	99	33	32,0	cyclictest	0	-21	swapper/7	10:38:58	7
2628749	99	33	31,2	cyclictest	2912570	-21	kworker/u16:3+flush-8:0	10:08:43	6
2628743	99	33	31,2	cyclictest	2661570	-21	kworker/u16:2+events_unbound	08:13:42	4
2628743	99	33	30,2	cyclictest	3183185	-21	kworker/u16:0+flush-8:0	12:08:56	4
2628743	99	33	30,2	cyclictest	2680826	-21	kworker/u16:1+flush-8:0	08:38:43	4
2628743	99	33	30,2	cyclictest	2680826	-21	kworker/u16:1+flush-8:0	08:38:43	4
2628743	99	32	29,2	cyclictest	2661570	-21	kworker/u16:2+events_unbound	07:48:41	4
2628743	99	31	29,2	cyclictest	2661570	-21	kworker/u16:2+flush-8:0	09:13:58	4
2628748	99	30	27,3	cyclictest	3183185	-21	kworker/u16:0+flush-8:0	12:03:45	5
2628743	99	30	28,2	cyclictest	3100792	-21	kworker/u16:4+events_unbound	11:13:53	4
2628743	99	30	28,2	cyclictest	3076939	-21	kworker/u16:3+flush-8:0	11:28:43	4
2628743	99	30	28,2	cyclictest	2661570	-21	kworker/u16:2+events_unbound	08:53:28	4
2628743	99	30	27,2	cyclictest	3183185	-21	kworker/u16:0+flush-8:0	11:58:38	4
2628743	99	30	27,2	cyclictest	3076939	-21	kworker/u16:3+events_unbound	11:18:30	4
2628743	99	30	27,2	cyclictest	2661570	-21	kworker/u16:2+events_unbound	08:43:46	4
2628743	99	30	26,3	cyclictest	2912570	-21	kworker/u16:3+flush-8:0	10:13:43	4
2628749	99	29	27,2	cyclictest	3213616	-21	kworker/u16:2+events_unbound	12:09:33	6
2628748	99	29	27,2	cyclictest	2777723	-21	kworker/u16:0+flush-8:0	08:48:59	5
2628743	99	29	27,2	cyclictest	2998666	-21	kworker/u16:4+events_unbound	10:38:42	4
2628751	99	28	25,2	cyclictest	3230573	-21	smartctl	12:14:01	7
2628751	99	28	22,5	cyclictest	3134824	-21	latency_hist	11:28:28	7
2628749	99	28	26,2	cyclictest	2680826	-21	kworker/u16:1+events_unbound	08:24:01	6
2628749	99	28	26,2	cyclictest	2661570	-21	kworker/u16:2+events_unbound	07:56:22	6
2628743	99	28	26,2	cyclictest	2680826	-21	kworker/u16:1+flush-8:0	08:23:56	4
2628743	99	28	26,2	cyclictest	2595040	-21	kworker/u16:0+events_unbound	07:13:56	4
2628743	99	28	25,2	cyclictest	3037946	-21	kworker/u16:0+events_unbound	10:53:41	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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