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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 Wed Sep 17, 2025 00:43:31)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
124990	2	55	20,31	sleep7	0	-21	swapper/7	03:26:16	7
124860	2	53	43,7	sleep4	0	-21	swapper/4	03:24:29	4
125381	99	43	40,2	cyclictest	3623888	-21	kworker/u16:2+events_unbound	04:15:01	5
125381	99	41	39,2	cyclictest	3623888	-21	kworker/u16:2+events_unbound	04:10:00	5
125381	99	40	38,2	cyclictest	522015	-21	kworker/u16:5+events_unbound	07:03:25	5
124952	2	40	30,7	sleep6	0	-21	swapper/6	03:25:43	6
125381	99	38	36,2	cyclictest	463078	-21	kworker/u16:0+events_unbound	07:20:27	5
125389	99	37	35,1	cyclictest	0	-21	swapper/7	08:07:57	7
125389	99	37	35,1	cyclictest	0	-21	swapper/7	08:07:57	7
125381	99	37	35,2	cyclictest	394374	-21	kworker/u16:1+events_unbound	06:17:35	5
124920	2	36	25,8	sleep5	0	-21	swapper/5	03:25:18	5
125389	99	35	34,0	cyclictest	0	-21	swapper/7	06:30:27	7
125381	99	34	32,2	cyclictest	364890	-21	kworker/u16:2+flush-8:0	05:29:27	5
125381	99	34	32,2	cyclictest	334661	-21	kworker/u16:3+events_unbound	05:17:24	5
125384	99	32	30,2	cyclictest	473328	-21	kworker/u16:1+events_unbound	06:38:12	6
125384	99	32	30,2	cyclictest	3623888	-21	kworker/u16:2+flush-8:0	03:53:25	6
125381	99	32	30,2	cyclictest	639759	-21	kworker/u16:5+events_unbound	07:49:07	5
125381	99	32	30,2	cyclictest	473328	-21	kworker/u16:1+flush-8:0	06:36:26	5
125381	99	32	30,2	cyclictest	344427	-21	kworker/u16:4+events_unbound	05:21:55	5
125381	99	32	27,4	cyclictest	689756	-21	latency_hist	08:17:57	5
125384	99	31	29,2	cyclictest	209206	-21	kworker/u16:0+events_unbound	05:03:12	6
125381	99	31	29,2	cyclictest	611065	-21	kworker/u16:4+events_unbound	08:34:27	5
125389	99	30	28,1	cyclictest	0	-21	swapper/7	03:42:58	7
125381	99	30	28,2	cyclictest	394374	-21	kworker/u16:1+flush-8:0	06:01:26	5
125381	99	30	28,2	cyclictest	344427	-21	kworker/u16:4+events_unbound	05:36:56	5
125381	99	30	28,2	cyclictest	257285	-21	kworker/u16:3+events_unbound	04:34:59	5
125379	99	30	26,3	cyclictest	669880	-21	kworker/u16:0+flush-8:0	08:38:26	4
125381	99	29	27,2	cyclictest	542260	-21	kworker/u16:1+events_unbound	08:04:27	5
125381	99	29	27,2	cyclictest	542260	-21	kworker/u16:1+events_unbound	08:04:27	5
125381	99	29	27,2	cyclictest	256812	-21	kworker/u16:2+events_unbound	05:11:55	5
125381	99	29	26,2	cyclictest	256812	-21	kworker/u16:2+events_unbound	04:52:58	5
125384	99	28	26,2	cyclictest	738684	-21	kworker/u16:5+flush-8:0	08:43:23	6
125384	99	28	26,2	cyclictest	542260	-21	kworker/u16:1+flush-8:0	08:12:57	6
125389	99	27	22,3	cyclictest	325208	-21	timerandwakeup	05:03:26	7
125384	99	27	25,2	cyclictest	95470	-21	kworker/u16:1+flush-8:0	03:58:23	6
125384	99	27	25,2	cyclictest	364890	-21	kworker/u16:2+events_unbound	06:03:27	6
125384	99	27	25,2	cyclictest	3623888	-21	kworker/u16:2+flush-8:0	04:03:11	6
125381	99	27	25,2	cyclictest	669880	-21	kworker/u16:0+events_unbound	08:49:28	5
125381	99	27	25,2	cyclictest	493708	-21	kworker/u16:4+events_unbound	06:41:08	5
125381	99	27	25,2	cyclictest	114397	-21	kworker/u16:0+flush-8:0	03:59:57	5
125379	99	27	22,4	cyclictest	758649	-21	awk	08:52:57	4
125389	99	26	26,0	cyclictest	0	-21	swapper/7	07:17:27	7
125384	99	26	24,2	cyclictest	95470	-21	kworker/u16:1+flush-8:0	04:28:21	6
125384	99	26	24,2	cyclictest	463078	-21	kworker/u16:0+flush-8:0	07:08:21	6
125384	99	26	24,2	cyclictest	256812	-21	kworker/u16:2+flush-8:0	05:08:23	6
125384	99	26	23,2	cyclictest	463078	-21	kworker/u16:0+flush-8:0	06:58:19	6
125381	99	26	24,2	cyclictest	601150	-21	kworker/u16:2+events_unbound	07:31:26	5
125381	99	26	24,2	cyclictest	209206	-21	kworker/u16:0+events_unbound	04:50:24	5
125384	99	25	23,2	cyclictest	443205	-21	kworker/u16:4+events_unbound	06:14:43	6
125381	99	25	23,2	cyclictest	749166	-21	kworker/u16:1+events_unbound	08:55:26	5
125381	99	25	23,2	cyclictest	276959	-21	kworker/u16:4+flush-8:0	04:43:22	5
125381	99	25	23,2	cyclictest	159431	-21	kworker/u16:3+events_unbound	03:46:25	5
125381	99	25	22,2	cyclictest	209206	-21	kworker/u16:0+flush-8:0	04:38:22	5
125389	99	24	21,2	cyclictest	234242	-21	kthreadcore	04:18:19	7
125384	99	24	22,2	cyclictest	209206	-21	kworker/u16:0+flush-8:0	04:38:23	6
125384	99	24	19,4	cyclictest	296297	-21	latency_hist	04:52:57	6
125381	99	24	22,2	cyclictest	394881	-21	kworker/u16:3+events_unbound	06:20:27	5
125381	99	24	22,2	cyclictest	364890	-21	kworker/u16:2+events_unbound	06:07:22	5
125381	99	24	22,2	cyclictest	256812	-21	kworker/u16:2+events_unbound	05:05:11	5
125381	99	24	21,2	cyclictest	344427	-21	kworker/u16:4+flush-8:0	05:38:07	5
125381	99	24	21,2	cyclictest	344427	-21	kworker/u16:4+flush-8:0	05:38:07	5
125389	99	23	22,0	cyclictest	0	-21	swapper/7	07:38:53	7
125389	99	23	21,1	cyclictest	0	-21	swapper/7	04:03:20	7
125389	99	23	15,6	cyclictest	589235	-21	systemd-journal	08:22:57	7
125384	99	23	21,2	cyclictest	3623888	-21	kworker/u16:2+flush-8:0	04:08:25	6
125389	99	22	21,0	cyclictest	0	-21	swapper/7	08:13:11	7
125384	99	22	20,2	cyclictest	601150	-21	kworker/u16:2+flush-8:0	07:33:24	6
125384	99	22	20,2	cyclictest	542260	-21	kworker/u16:1+flush-8:0	07:28:27	6
125384	99	22	20,2	cyclictest	334661	-21	kworker/u16:3+events_unbound	05:14:22	6
125381	99	22	20,2	cyclictest	669880	-21	kworker/u16:0+events_unbound	08:25:26	5
125381	99	22	20,2	cyclictest	639759	-21	kworker/u16:5+events_unbound	07:55:47	5
125381	99	22	20,2	cyclictest	542260	-21	kworker/u16:1+events_unbound	07:10:27	5
125381	99	22	20,2	cyclictest	522015	-21	kworker/u16:5+flush-8:0	07:24:08	5
125381	99	22	19,3	cyclictest	679857	-21	kworker/u16:2+flush-8:0	08:30:56	5
125379	99	22	18,3	cyclictest	611065	-21	kworker/u16:4+flush-8:0	08:27:57	4
125389	99	21	20,0	cyclictest	0	-21	swapper/7	08:56:26	7
125389	99	21	20,0	cyclictest	0	-21	swapper/7	08:48:26	7
125389	99	21	20,0	cyclictest	0	-21	swapper/7	05:57:26	7
125389	99	21	0,20	cyclictest	522812	-21	turbostat	06:52:56	7
125389	99	21	0,19	cyclictest	394490	-21	turbostat	05:42:57	7
125389	99	21	0,19	cyclictest	394490	-21	turbostat	05:42:57	7
125384	99	21	19,2	cyclictest	95470	-21	kworker/u16:1+flush-8:0	05:23:22	6
125384	99	21	19,2	cyclictest	95470	-21	kworker/u16:1+flush-8:0	04:18:12	6
125384	99	21	19,2	cyclictest	690154	-21	kworker/u16:3+flush-8:0	08:18:11	6
125384	99	21	19,2	cyclictest	639759	-21	kworker/u16:5+flush-8:0	08:03:12	6
125384	99	21	19,2	cyclictest	639759	-21	kworker/u16:5+flush-8:0	08:03:12	6
125384	99	21	19,2	cyclictest	590486	-21	kworker/u16:3+flush-8:0	07:23:19	6
125384	99	21	19,2	cyclictest	473328	-21	kworker/u16:1+events_unbound	06:33:11	6
125384	99	21	19,2	cyclictest	114397	-21	kworker/u16:0+flush-8:0	03:28:23	6
125384	99	21	18,2	cyclictest	611065	-21	kworker/u16:4+events_unbound	07:48:16	6
125381	99	21	19,2	cyclictest	611065	-21	kworker/u16:4+events_unbound	08:43:13	5
125381	99	21	19,2	cyclictest	542260	-21	kworker/u16:1+events_unbound	08:19:03	5
125381	99	21	19,2	cyclictest	522015	-21	kworker/u16:5+events_unbound	06:51:26	5
125381	99	21	19,2	cyclictest	364890	-21	kworker/u16:2+flush-8:0	05:43:59	5
125389	99	20	19,0	cyclictest	0	-21	swapper/7	06:43:41	7
125384	99	20	18,2	cyclictest	749166	-21	kworker/u16:1+flush-8:0	08:48:23	6
125384	99	20	18,2	cyclictest	611065	-21	kworker/u16:4+flush-8:0	08:23:27	6
125384	99	20	18,2	cyclictest	611065	-21	kworker/u16:4+events_unbound	07:53:27	6
125384	99	20	18,2	cyclictest	611065	-21	kworker/u16:4+events_unbound	07:45:34	6
125384	99	20	18,2	cyclictest	463078	-21	kworker/u16:0+flush-8:0	06:18:23	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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