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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 Nov 30, 2025 00:43:33)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2929383	2	60	50,7	sleep6	0	-21	swapper/6	03:22:36	6
2929343	2	59	49,7	sleep5	0	-21	swapper/5	03:22:03	5
2929098	2	54	21,29	sleep7	0	-21	swapper/7	03:18:44	7
2929778	99	48	42,5	cyclictest	2939762	-21	latency_hist	03:28:02	7
2929369	2	47	37,7	sleep4	0	-21	swapper/4	03:22:26	4
2929765	99	46	43,2	cyclictest	2888047	-21	kworker/u16:5+events_unbound	04:33:04	4
2929765	99	46	43,2	cyclictest	2888047	-21	kworker/u16:5+events_unbound	04:33:04	4
2929765	99	44	42,2	cyclictest	3104963	-21	kworker/u16:3+events_unbound	04:59:35	4
2929765	99	44	41,2	cyclictest	3406965	-21	kworker/u16:4+events_unbound	07:28:28	4
2929765	99	38	36,2	cyclictest	3306242	-21	kworker/u16:2+events_unbound	06:55:34	4
2929765	99	38	36,2	cyclictest	3053616	-21	kworker/u16:2+flush-8:0	04:53:44	4
2929778	99	37	32,4	cyclictest	589235	-21	systemd-journal	03:53:01	7
2929778	99	37	32,4	cyclictest	589235	-21	systemd-journal	03:53:01	7
2929765	99	37	35,2	cyclictest	2888047	-21	kworker/u16:5+events_unbound	04:31:32	4
2929765	99	37	34,2	cyclictest	3477617	-21	kworker/u16:1+events_unbound	08:43:11	4
2929765	99	36	34,2	cyclictest	3053616	-21	kworker/u16:2+events_unbound	05:26:35	4
2929778	99	35	34,0	cyclictest	0	-21	swapper/7	05:08:32	7
2929778	99	35	30,4	cyclictest	3407303	-21	latency_hist	07:18:01	7
2929769	99	34	32,2	cyclictest	3134310	-21	kworker/u16:1+flush-8:0	05:03:00	5
2929765	99	34	32,2	cyclictest	3477617	-21	kworker/u16:1+events_unbound	08:16:11	4
2929778	99	33	0,31	cyclictest	3417513	-21	date	07:23:00	7
2929769	99	33	31,2	cyclictest	3406965	-21	kworker/u16:4+flush-8:0	07:48:28	5
2929769	99	33	30,2	cyclictest	2963689	-21	kworker/u16:2+flush-8:0	03:48:02	5
2929769	99	33	30,2	cyclictest	2963689	-21	kworker/u16:2+flush-8:0	03:48:02	5
2929765	99	33	31,2	cyclictest	3568469	-21	kworker/u16:0+events_unbound	08:36:52	4
2929765	99	33	31,2	cyclictest	3497841	-21	kworker/u16:2+events_unbound	08:02:34	4
2929765	99	33	31,2	cyclictest	3266122	-21	kworker/u16:0+events_unbound	06:17:37	4
2929765	99	33	31,2	cyclictest	2973964	-21	kworker/u16:1+events_unbound	03:56:47	4
2929765	99	33	31,2	cyclictest	1504635	-21	kworker/u16:0+flush-8:0	03:48:28	4
2929765	99	33	31,2	cyclictest	1504635	-21	kworker/u16:0+flush-8:0	03:48:28	4
2929778	99	32	27,4	cyclictest	589235	-21	systemd-journal	07:28:00	7
2929778	99	32	27,4	cyclictest	3387210	-21	latency_hist	07:08:01	7
2929773	99	32	27,2	cyclictest	3053616	-21	kworker/u16:2+flush-8:0	05:33:32	6
2929769	99	32	30,2	cyclictest	3134310	-21	kworker/u16:1+events_unbound	05:16:33	5
2929769	99	32	30,2	cyclictest	3053616	-21	kworker/u16:2+events_unbound	05:11:36	5
2929769	99	32	30,2	cyclictest	3053616	-21	kworker/u16:2+events_unbound	04:22:05	5
2929765	99	32	30,2	cyclictest	3594356	-21	kworker/u16:4+flush-8:0	08:51:43	4
2929765	99	32	30,2	cyclictest	3397164	-21	kworker/u16:2+events_unbound	07:19:11	4
2929765	99	32	30,2	cyclictest	3276229	-21	kworker/u16:1+events_unbound	06:51:34	4
2929765	99	32	30,2	cyclictest	3276229	-21	kworker/u16:1+events_unbound	06:51:34	4
2929765	99	32	30,2	cyclictest	3185667	-21	kworker/u16:3+events_unbound	05:33:33	4
2929778	99	31	26,4	cyclictest	589235	-21	systemd-journal	06:05:33	7
2929778	99	31	26,4	cyclictest	589235	-21	systemd-journal	06:05:33	7
2929769	99	31	29,2	cyclictest	3406965	-21	kworker/u16:4+events_unbound	08:10:13	5
2929769	99	31	29,2	cyclictest	3134310	-21	kworker/u16:1+events_unbound	05:21:16	5
2929769	99	31	29,2	cyclictest	3034606	-21	kworker/u16:3+events_unbound	04:14:44	5
2929769	99	31	29,2	cyclictest	2919021	-21	kworker/u16:1+events_unbound	03:35:17	5
2929769	99	31	29,2	cyclictest	2888047	-21	kworker/u16:5+events_unbound	03:57:48	5
2929765	99	31	29,2	cyclictest	3406965	-21	kworker/u16:4+events_unbound	07:50:35	4
2929765	99	31	29,2	cyclictest	3134310	-21	kworker/u16:1+flush-8:0	05:21:11	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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