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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 Sat Dec 13, 2025 12:43:31)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2352885	2	54	19,30	sleep7	0	-21	swapper/7	07:05:31	7
2353196	2	49	39,7	sleep4	0	-21	swapper/4	07:09:53	4
6265	89	45	0,38	rtkit-daemon	0	-21	swapper/5	07:05:46	5
2353496	99	43	37,5	cyclictest	2444525	-21	latency_hist	07:54:55	7
2353062	2	37	27,7	sleep6	0	-21	swapper/6	07:08:02	6
2353486	99	33	30,2	cyclictest	2686814	-21	kworker/u16:4+flush-8:0	10:04:55	4
2353491	99	32	30,2	cyclictest	2580747	-21	kworker/u16:0+flush-8:0	09:50:10	5
2353491	99	31	28,2	cyclictest	2921479	-21	kworker/u16:1+flush-8:0	12:25:09	5
2353486	99	30	28,2	cyclictest	2687985	-21	kworker/u16:5+events_unbound	10:25:12	4
2353491	99	29	25,3	cyclictest	2570917	-21	kworker/u16:3+flush-8:0	09:10:20	5
2353486	99	29	27,2	cyclictest	2812497	-21	kworker/u16:4+events_unbound	11:25:24	4
2353491	99	27	25,2	cyclictest	2740472	-21	kworker/u16:1+events_unbound	10:55:24	5
2353491	99	26	24,2	cyclictest	2921479	-21	kworker/u16:1+flush-8:0	12:15:18	5
2353491	99	26	24,2	cyclictest	2718287	-21	kworker/u16:0+flush-8:0	10:35:28	5
2353491	99	26	23,3	cyclictest	2921479	-21	kworker/u16:1+flush-8:0	12:20:22	5
2353491	99	25	22,2	cyclictest	2740472	-21	kworker/u16:1+flush-8:0	11:20:22	5
2353491	99	25	22,2	cyclictest	2740472	-21	kworker/u16:1+flush-8:0	11:20:22	5
2353486	99	25	23,2	cyclictest	2580747	-21	kworker/u16:0+events_unbound	09:45:24	4
2353486	99	25	23,2	cyclictest	2580747	-21	kworker/u16:0+events_unbound	09:45:24	4
2353496	99	24	0,22	cyclictest	2610010	-21	latency_hist	09:19:55	7
2353491	99	24	22,2	cyclictest	2740472	-21	kworker/u16:1+events_unbound	11:14:08	5
2353491	99	24	22,2	cyclictest	2687985	-21	kworker/u16:5+events_unbound	10:41:08	5
2353491	99	24	22,2	cyclictest	2425184	-21	kworker/u16:2+events_unbound	08:07:57	5
2353496	99	23	0,16	cyclictest	0	-21	swapper/7	08:59:50	7
2353496	99	23	0,16	cyclictest	0	-21	swapper/7	08:59:50	7
2353493	99	23	19,3	cyclictest	2686814	-21	kworker/u16:4+flush-8:0	10:15:20	6
2353491	99	23	21,2	cyclictest	2775487	-21	kworker/u16:3+flush-8:0	10:50:14	5
2353491	99	23	21,2	cyclictest	2668382	-21	kworker/u16:2+events_unbound	10:45:18	5
2353491	99	23	21,2	cyclictest	2425185	-21	kworker/u16:3+events_unbound	07:57:24	5
2353491	99	23	21,2	cyclictest	2425184	-21	kworker/u16:2+events_unbound	08:54:08	5
2353491	99	23	20,2	cyclictest	2740472	-21	kworker/u16:1+flush-8:0	11:30:12	5
2353486	99	23	21,2	cyclictest	2474129	-21	kworker/u16:1+flush-8:0	08:44:50	4
2353486	99	23	21,2	cyclictest	2425185	-21	kworker/u16:3+flush-8:0	07:50:24	4
2353496	99	22	0,21	cyclictest	2574522	-21	cut	09:00:13	7
2353491	99	22	20,2	cyclictest	2863293	-21	kworker/u16:3+flush-8:0	12:00:14	5
2353491	99	22	20,2	cyclictest	2740472	-21	kworker/u16:1+events_unbound	11:04:51	5
2353491	99	22	20,2	cyclictest	2687985	-21	kworker/u16:5+events_unbound	10:20:19	5
2353491	99	22	19,2	cyclictest	2610236	-21	kworker/u16:4+events_unbound	09:30:15	5
2353486	99	22	20,2	cyclictest	2610236	-21	kworker/u16:4+events_unbound	09:20:12	4
2353486	99	22	20,2	cyclictest	2570917	-21	kworker/u16:3+events_unbound	09:05:20	4
2654093	2	21	0,1	chrt	0	-21	swapper/5	09:40:32	5
2353491	99	21	19,2	cyclictest	2718287	-21	kworker/u16:0+events_unbound	11:07:35	5
2353491	99	21	19,2	cyclictest	2668382	-21	kworker/u16:2+events_unbound	10:11:12	5
2353486	99	21	19,2	cyclictest	2863293	-21	kworker/u16:3+flush-8:0	11:45:20	4
2353486	99	21	18,2	cyclictest	2482656	-21	kworker/u16:4+events_unbound	08:24:57	4
2353496	99	20	15,4	cyclictest	1267	-21	snmpd	08:35:24	7
2353496	99	20	13,1	cyclictest	0	-21	swapper/7	07:20:18	7
2353491	99	20	18,2	cyclictest	2668382	-21	kworker/u16:2+flush-8:0	10:28:11	5
2353491	99	20	18,2	cyclictest	2580747	-21	kworker/u16:0+events_unbound	09:36:05	5
2353491	99	20	18,2	cyclictest	2354504	-21	kworker/u16:2+flush-8:0	07:30:32	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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