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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 Mon Apr 06, 2026 00:43:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3419226	2	102	0,0	sleep5	0	-21	swapper/5	00:17:33	5
3419226	2	102	0,0	sleep5	0	-21	swapper/5	00:17:33	5
2957061	2	97	0,1	sleep7	2957063	-21	tr	21:02:44	7
2717135	99	59	0,57	cyclictest	650	-21	systemd-journal	23:22:21	7
2717126	99	57	54,2	cyclictest	3319470	-21	kworker/u16:5+flush-8:0	23:37:35	5
2716696	2	57	46,8	sleep6	0	-21	swapper/6	19:00:33	6
2717126	99	54	51,2	cyclictest	3358796	-21	kworker/u16:2+events_unbound	00:02:23	5
2717126	99	52	50,2	cyclictest	2807197	-21	kworker/u16:0+flush-8:0	21:12:36	5
2717126	99	50	48,2	cyclictest	3358796	-21	kworker/u16:2+events_unbound	00:12:51	5
2717126	99	50	48,2	cyclictest	2998276	-21	kworker/u16:0+events_unbound	21:57:35	5
2717127	99	49	45,3	cyclictest	3319470	-21	kworker/u16:5+flush-8:0	23:57:20	6
2717126	99	49	47,2	cyclictest	2984048	-21	kworker/u16:1+events_unbound	22:07:35	5
2717127	99	48	46,2	cyclictest	2726571	-21	kworker/u16:4+events_unbound	19:17:21	6
2717126	99	48	46,2	cyclictest	2984048	-21	kworker/u16:1+events_unbound	21:37:35	5
2717126	99	48	46,2	cyclictest	2984048	-21	kworker/u16:1+events_unbound	21:37:35	5
2717126	99	48	46,2	cyclictest	2726571	-21	kworker/u16:4+flush-8:0	19:12:47	5
2717126	99	46	44,2	cyclictest	3310675	-21	kworker/u16:2+events_unbound	23:32:47	5
2717135	99	45	39,5	cyclictest	2883207	-21	latency_hist	20:27:21	7
2717126	99	45	43,2	cyclictest	3166637	-21	kworker/u16:3+flush-8:0	22:37:21	5
2717126	99	45	43,2	cyclictest	2962087	-21	kworker/u16:5+events_unbound	21:32:47	5
2717135	99	44	39,4	cyclictest	3394397	-21	latency_hist	00:07:21	7
2717127	99	44	42,2	cyclictest	2962087	-21	kworker/u16:5+events_unbound	22:12:20	6
2717127	99	44	41,2	cyclictest	2962087	-21	kworker/u16:5+flush-8:0	22:17:35	6
2717126	99	44	42,2	cyclictest	3106233	-21	kworker/u16:2+events_unbound	22:57:11	5
2717126	99	44	42,2	cyclictest	3106233	-21	kworker/u16:2+events_unbound	22:57:11	5
2717126	99	44	39,2	cyclictest	2807197	-21	kworker/u16:0+events_unbound	20:37:35	5
2717127	99	43	41,2	cyclictest	3416133	-21	kworker/u16:4+events_unbound	00:22:35	6
2717127	99	43	41,2	cyclictest	2962087	-21	kworker/u16:5+flush-8:0	21:12:21	6
2717127	99	43	40,2	cyclictest	2635520	-21	kworker/u16:3+events_unbound	19:42:36	6
2717127	99	43	39,3	cyclictest	2746491	-21	kworker/u16:1+flush-8:0	19:37:21	6
2717126	99	43	41,2	cyclictest	3358796	-21	kworker/u16:2+events_unbound	00:01:19	5
2717126	99	43	41,2	cyclictest	3213374	-21	kworker/u16:4+events_unbound	23:09:04	5
2717126	99	43	40,2	cyclictest	2962087	-21	kworker/u16:5+events_unbound	21:22:34	5
2717126	99	42	40,2	cyclictest	3213153	-21	kworker/u16:3+events_unbound	23:16:51	5
2717126	99	42	39,2	cyclictest	3416132	-21	kworker/u16:3+events_unbound	00:22:23	5
2716685	2	42	32,7	sleep4	0	-21	swapper/4	19:00:22	4
2716668	2	42	32,7	sleep5	0	-21	swapper/5	19:00:07	5
2711792	2	42	3,32	sleep7	0	-21	swapper/7	18:57:45	7
2717127	99	41	38,2	cyclictest	3213374	-21	kworker/u16:4+events_unbound	23:12:39	6
2717127	99	41	38,2	cyclictest	3213153	-21	kworker/u16:3+events_unbound	23:22:39	6
2717126	99	41	39,2	cyclictest	3213374	-21	kworker/u16:4+events_unbound	23:04:03	5
2717126	99	41	39,2	cyclictest	2984048	-21	kworker/u16:1+events_unbound	21:47:46	5
2717126	99	41	39,2	cyclictest	2984048	-21	kworker/u16:1+events_unbound	21:29:48	5
2717126	99	41	39,2	cyclictest	2962086	-21	kworker/u16:4+events_unbound	21:08:59	5
2717126	99	40	38,2	cyclictest	2998276	-21	kworker/u16:0+events_unbound	21:57:19	5
2717126	99	40	38,2	cyclictest	2984048	-21	kworker/u16:1+events_unbound	22:41:27	5
2717126	99	40	38,2	cyclictest	2864101	-21	kworker/u16:1+events_unbound	21:03:44	5
2717126	99	40	37,2	cyclictest	2787685	-21	kworker/u16:4+events_unbound	20:07:35	5
2717126	99	40	37,2	cyclictest	2746491	-21	kworker/u16:1+flush-8:0	19:47:36	5
2717127	99	39	37,2	cyclictest	3247878	-21	kworker/u16:0+flush-8:0	23:03:16	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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