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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 100 highest latencies:

System rack0slot2.osadl.org (updated Fri Jan 23, 2026 12:43:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2349648	2	59	48,7	sleep6	0	-21	swapper/6	07:05:30	6
2349648	2	59	48,7	sleep6	0	-21	swapper/6	07:05:30	6
2350057	99	57	52,4	cyclictest	2824177	-21	latency_hist	11:07:09	7
2969559	2	56	0,1	sleep7	2969558	-21	ssh	12:04:29	7
2350047	99	51	47,3	cyclictest	2574051	-21	kworker/u16:3+events_unbound	09:22:35	4
2350057	99	46	41,4	cyclictest	2820983	-21	latency_hist	11:02:09	7
2350057	99	46	41,4	cyclictest	2820983	-21	latency_hist	11:02:09	7
2350051	99	45	42,2	cyclictest	2623300	-21	kworker/u16:0+flush-8:0	09:52:10	5
2350047	99	44	41,2	cyclictest	2779535	-21	kworker/u16:1+events_unbound	10:47:12	4
2350047	99	44	41,2	cyclictest	2574051	-21	kworker/u16:3+events_unbound	09:17:11	4
2349462	2	44	9,30	sleep7	0	-21	swapper/7	07:02:51	7
2349462	2	44	9,30	sleep7	0	-21	swapper/7	07:02:51	7
2350047	99	43	41,2	cyclictest	2623300	-21	kworker/u16:0+events_unbound	09:52:06	4
2350047	99	42	40,2	cyclictest	2815406	-21	kworker/u16:3+events_unbound	10:55:15	4
2350047	99	41	39,2	cyclictest	2885818	-21	kworker/u16:2+events_unbound	12:03:10	4
2350047	99	41	39,2	cyclictest	2719221	-21	kworker/u16:4+events_unbound	11:13:47	4
2350047	99	41	39,2	cyclictest	2574051	-21	kworker/u16:3+events_unbound	09:57:57	4
2350057	99	40	39,0	cyclictest	0	-21	swapper/7	12:16:11	7
2350047	99	40	38,2	cyclictest	2899429	-21	kworker/u16:0+events_unbound	12:09:43	4
2350047	99	40	38,2	cyclictest	2899429	-21	kworker/u16:0+events_unbound	11:55:15	4
2350047	99	40	38,2	cyclictest	2885818	-21	kworker/u16:2+events_unbound	12:17:41	4
2350047	99	40	37,2	cyclictest	2899429	-21	kworker/u16:0+events_unbound	11:42:11	4
2349534	2	40	29,8	sleep5	0	-21	swapper/5	07:03:53	5
2349534	2	40	29,8	sleep5	0	-21	swapper/5	07:03:53	5
2350057	99	39	37,1	cyclictest	2946129	-21	ssh	11:56:15	7
2350057	99	39	37,1	cyclictest	2668168	-21	ssh	09:38:15	7
2350057	99	39	37,1	cyclictest	2668168	-21	ssh	09:38:15	7
2350057	99	39	37,1	cyclictest	0	-21	swapper/7	09:14:32	7
2350047	99	39	37,2	cyclictest	2922200	-21	kworker/u16:3+events_unbound	12:24:43	4
2350047	99	39	37,2	cyclictest	2815406	-21	kworker/u16:3+events_unbound	11:08:27	4
2350047	99	39	37,2	cyclictest	2779616	-21	kworker/u16:5+events_unbound	10:26:43	4
2350047	99	39	37,2	cyclictest	2779535	-21	kworker/u16:1+events_unbound	10:33:30	4
2350047	99	39	37,2	cyclictest	2692321	-21	kworker/u16:2+events_unbound	09:53:59	4
2350047	99	39	37,2	cyclictest	2421425	-21	kworker/u16:1+events_unbound	09:14:27	4
2350057	99	38	36,1	cyclictest	2981568	-21	ssh	12:09:07	7
2350057	99	38	36,1	cyclictest	0	-21	swapper/7	10:44:50	7
2350057	99	38	32,5	cyclictest	2411581	-21	latency_hist	07:37:10	7
2350057	99	38	32,4	cyclictest	2645946	-21	latency_hist	09:32:09	7
2350047	99	38	36,2	cyclictest	2922200	-21	kworker/u16:3+events_unbound	12:14:34	4
2350047	99	38	36,2	cyclictest	2885818	-21	kworker/u16:2+events_unbound	11:41:54	4
2350047	99	38	36,2	cyclictest	2885818	-21	kworker/u16:2+events_unbound	11:41:54	4
2350047	99	38	36,2	cyclictest	2836620	-21	kworker/u16:0+events_unbound	11:23:10	4
2350047	99	38	36,2	cyclictest	2779535	-21	kworker/u16:1+events_unbound	10:38:23	4
2350047	99	38	36,2	cyclictest	2719221	-21	kworker/u16:4+events_unbound	11:03:51	4
2350047	99	38	35,2	cyclictest	2786628	-21	kworker/u16:2+events_unbound	10:43:35	4
2350057	99	37	36,0	cyclictest	0	-21	swapper/7	09:56:59	7
2350057	99	37	0,35	cyclictest	2657253	-21	sh	09:35:35	7
2350047	99	37	35,2	cyclictest	2922200	-21	kworker/u16:3+events_unbound	11:48:58	4
2350047	99	37	35,2	cyclictest	2899429	-21	kworker/u16:0+events_unbound	12:01:50	4
2350047	99	37	35,2	cyclictest	2719221	-21	kworker/u16:4+events_unbound	10:58:27	4
2350047	99	37	35,2	cyclictest	2719221	-21	kworker/u16:4+events_unbound	10:58:27	4
2350047	99	37	35,2	cyclictest	2655782	-21	kworker/u16:1+events_unbound	09:42:19	4
2350047	99	37	35,2	cyclictest	2623300	-21	kworker/u16:0+events_unbound	09:38:52	4
2350047	99	37	35,2	cyclictest	2623300	-21	kworker/u16:0+events_unbound	09:38:52	4
2350047	99	37	35,2	cyclictest	2623300	-21	kworker/u16:0+events_unbound	09:34:28	4
2350047	99	37	35,2	cyclictest	2623300	-21	kworker/u16:0+events_unbound	09:30:03	4
2350047	99	37	35,2	cyclictest	2574051	-21	kworker/u16:3+events_unbound	10:12:19	4
2349676	2	37	24,9	sleep4	0	-21	swapper/4	07:05:52	4
2349676	2	37	24,9	sleep4	0	-21	swapper/4	07:05:52	4
2350057	99	36	35,1	cyclictest	2957769	-21	ssh	12:00:14	7
2350057	99	36	35,0	cyclictest	0	-21	swapper/7	09:49:18	7
2350057	99	36	34,1	cyclictest	0	-21	swapper/7	10:53:39	7
2350051	99	36	34,2	cyclictest	2623300	-21	kworker/u16:0+events_unbound	09:32:39	5
2350047	99	36	34,2	cyclictest	3018395	-21	kworker/u16:0+events_unbound	12:30:43	4
2350047	99	36	34,2	cyclictest	2860050	-21	kworker/u16:1+events_unbound	11:31:15	4
2350047	99	36	34,2	cyclictest	2836620	-21	kworker/u16:0+flush-8:0	11:22:09	4
2350057	99	35	35,0	cyclictest	0	-21	swapper/7	09:27:07	7
2350057	99	35	33,1	cyclictest	2584825	-21	diskmemload	11:49:07	7
2350057	99	35	33,1	cyclictest	0	-21	swapper/7	11:39:11	7
2350057	99	35	33,1	cyclictest	0	-21	swapper/7	11:39:11	7
2350057	99	35	33,1	cyclictest	0	-21	swapper/7	10:51:07	7
2350057	99	35	33,1	cyclictest	0	-21	swapper/7	08:07:27	7
2350057	99	35	32,2	cyclictest	3005330	-21	ssh	12:17:54	7
2350057	99	35	32,2	cyclictest	2742713	-21	sh	10:10:38	7
2350057	99	35	32,2	cyclictest	124	-21	kswapd0	09:57:22	7
2350047	99	35	33,2	cyclictest	2982499	-21	kworker/u16:1+events_unbound	12:34:18	4
2350047	99	35	33,2	cyclictest	2815406	-21	kworker/u16:3+events_unbound	11:34:08	4
2350047	99	35	33,2	cyclictest	2421425	-21	kworker/u16:1+events_unbound	09:08:35	4
2350051	99	34	30,3	cyclictest	2359221	-21	kworker/u16:4+events_unbound	08:32:27	5
2350047	99	34	32,2	cyclictest	2623300	-21	kworker/u16:0+events_unbound	10:19:00	4
2350047	99	34	32,2	cyclictest	2623300	-21	kworker/u16:0+events_unbound	10:19:00	4
2350047	99	34	32,2	cyclictest	2623300	-21	kworker/u16:0+events_unbound	10:11:11	4
2350057	99	33	32,0	cyclictest	0	-21	swapper/7	12:30:06	7
2350057	99	33	32,0	cyclictest	0	-21	swapper/7	10:03:47	7
2350057	99	33	31,1	cyclictest	2782498	-21	ssh	10:30:26	7
2350047	99	33	31,2	cyclictest	2574051	-21	kworker/u16:3+events_unbound	10:04:09	4
2350057	99	32	31,0	cyclictest	0	-21	swapper/7	08:17:11	7
2350057	99	32	29,2	cyclictest	2861426	-21	ssh	11:22:19	7
2350057	99	31	31,0	cyclictest	0	-21	swapper/7	12:34:59	7
2350057	99	31	31,0	cyclictest	0	-21	swapper/7	11:30:30	7
2350057	99	31	31,0	cyclictest	0	-21	swapper/7	11:10:43	7
2350057	99	31	31,0	cyclictest	0	-21	swapper/7	10:19:51	7
2350057	99	31	31,0	cyclictest	0	-21	swapper/7	10:19:51	7
2350057	99	31	30,1	cyclictest	0	-21	swapper/7	09:20:24	7
2350057	99	31	30,0	cyclictest	0	-21	swapper/7	11:45:54	7
2350057	99	31	30,0	cyclictest	0	-21	swapper/7	07:15:20	7
2350051	99	31	26,4	cyclictest	2779494	-21	packagekitd	10:25:58	5
2350047	99	31	29,2	cyclictest	2719221	-21	kworker/u16:4+events_unbound	10:30:53	4
2350057	99	30	30,0	cyclictest	0	-21	swapper/7	11:20:51	7
2350057	99	30	30,0	cyclictest	0	-21	swapper/7	09:46:30	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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