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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 Jan 28, 2026 00:43:33)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2036157	2	96	0,1	sleep4	0	-21	swapper/4	19:31:52	4
1984135	99	53	47,5	cyclictest	2142522	-21	latency_hist	20:26:52	7
1984129	99	49	47,2	cyclictest	2425592	-21	kworker/u16:3+events_unbound	23:06:22	5
1983816	2	47	37,7	sleep6	0	-21	swapper/6	19:06:47	6
1984131	99	46	43,2	cyclictest	2560835	-21	kworker/u16:2+flush-8:0	00:07:12	6
1984129	99	43	41,2	cyclictest	2560811	-21	kworker/u16:1+events_unbound	23:33:42	5
1983672	2	43	14,8	sleep4	0	-21	swapper/4	19:04:45	4
1984129	99	42	40,2	cyclictest	2609173	-21	kworker/u16:3+flush-8:0	23:58:24	5
1984129	99	42	40,2	cyclictest	2366257	-21	kworker/u16:1+flush-8:0	22:07:37	5
1984129	99	41	39,2	cyclictest	2560835	-21	kworker/u16:2+events_unbound	00:11:33	5
1984129	99	41	39,2	cyclictest	2425592	-21	kworker/u16:3+events_unbound	23:24:54	5
1984129	99	41	39,2	cyclictest	2241260	-21	kworker/u16:3+events_unbound	21:27:29	5
1984129	99	40	38,2	cyclictest	2609173	-21	kworker/u16:3+events_unbound	00:14:17	5
1984129	99	40	38,2	cyclictest	2560811	-21	kworker/u16:1+events_unbound	23:38:41	5
1984129	99	40	38,2	cyclictest	2412561	-21	kworker/u16:0+events_unbound	22:23:01	5
1984129	99	39	37,2	cyclictest	2560811	-21	kworker/u16:1+events_unbound	23:53:17	5
1984129	99	39	37,2	cyclictest	2560811	-21	kworker/u16:1+events_unbound	23:48:41	5
1984129	99	39	37,2	cyclictest	2412561	-21	kworker/u16:0+events_unbound	22:35:41	5
1984129	99	39	37,2	cyclictest	2220312	-21	kworker/u16:2+events_unbound	21:50:58	5
1984129	99	39	37,2	cyclictest	2200224	-21	kworker/u16:0+events_unbound	21:19:38	5
1984129	99	39	36,2	cyclictest	2378823	-21	kworker/u16:2+events_unbound	22:16:54	5
1983817	2	39	3,31	sleep7	0	-21	swapper/7	19:06:48	7
1984135	99	38	37,0	cyclictest	0	-21	swapper/7	21:52:05	7
1984129	99	38	36,2	cyclictest	2669988	-21	kworker/u16:4+flush-8:0	00:19:52	5
1984129	99	38	36,2	cyclictest	2560835	-21	kworker/u16:2+events_unbound	23:28:12	5
1984129	99	38	36,2	cyclictest	2560835	-21	kworker/u16:2+events_unbound	23:28:12	5
1984129	99	38	36,2	cyclictest	2474254	-21	kworker/u16:0+events_unbound	22:59:52	5
1984129	99	38	36,2	cyclictest	2425541	-21	kworker/u16:2+events_unbound	22:54:17	5
1984129	99	38	36,2	cyclictest	2366257	-21	kworker/u16:1+events_unbound	22:12:53	5
1984129	99	38	36,2	cyclictest	2241260	-21	kworker/u16:3+events_unbound	21:22:01	5
1984129	99	38	36,2	cyclictest	2200224	-21	kworker/u16:0+events_unbound	21:33:37	5
1984129	99	38	35,2	cyclictest	2669988	-21	kworker/u16:4+events_unbound	00:30:56	5
1984129	99	38	35,2	cyclictest	2425592	-21	kworker/u16:3+events_unbound	22:40:21	5
1983664	2	38	28,7	sleep5	0	-21	swapper/5	19:04:38	5
1984129	99	37	35,2	cyclictest	2425592	-21	kworker/u16:3+events_unbound	22:44:17	5
1984129	99	37	35,2	cyclictest	2200224	-21	kworker/u16:0+events_unbound	21:14:37	5
1984129	99	37	35,2	cyclictest	2171517	-21	kworker/u16:4+events_unbound	21:09:38	5
1984129	99	36	34,2	cyclictest	2669988	-21	kworker/u16:4+events_unbound	00:24:21	5
1984129	99	36	34,2	cyclictest	2609173	-21	kworker/u16:3+events_unbound	00:04:33	5
1984129	99	36	34,2	cyclictest	2425541	-21	kworker/u16:2+flush-8:0	22:30:49	5
1984129	99	36	34,2	cyclictest	2220312	-21	kworker/u16:2+flush-8:0	21:37:53	5
1984129	99	36	34,2	cyclictest	2200224	-21	kworker/u16:0+events_unbound	21:45:01	5
1984129	99	35	33,2	cyclictest	2716141	-21	kworker/u16:1+flush-8:0	00:34:13	5
1984129	99	35	33,2	cyclictest	2488286	-21	kworker/u16:4+flush-8:0	23:07:49	5
1984129	99	35	33,2	cyclictest	2488286	-21	kworker/u16:4+events_unbound	23:20:13	5
1984129	99	35	33,2	cyclictest	2425592	-21	kworker/u16:3+events_unbound	22:50:01	5
1984129	99	35	33,2	cyclictest	2425592	-21	kworker/u16:3+events_unbound	22:50:01	5
1984129	99	35	33,2	cyclictest	2340844	-21	kworker/u16:5+flush-8:0	22:03:41	5
1984129	99	35	33,2	cyclictest	2329597	-21	kworker/u16:3+events_unbound	22:01:22	5
1984129	99	34	32,2	cyclictest	2582801	-21	kworker/u16:0+events_unbound	23:46:44	5
1984129	99	34	32,2	cyclictest	2474254	-21	kworker/u16:0+events_unbound	23:16:18	5
1984129	99	34	32,2	cyclictest	2220312	-21	kworker/u16:2+events_unbound	21:53:21	5
1984129	99	33	30,2	cyclictest	2075189	-21	kworker/u16:3+events_unbound	20:41:53	5
1984129	99	32	30,2	cyclictest	1299105	-21	kworker/u16:4+events_unbound	19:17:53	5
1984135	99	31	30,0	cyclictest	0	-21	swapper/7	20:52:21	7
1984135	99	31	0,29	cyclictest	2545582	-21	ssh	23:17:12	7
1984129	99	30	28,2	cyclictest	2075189	-21	kworker/u16:3+flush-8:0	20:16:52	5
1984129	99	30	28,2	cyclictest	2007407	-21	kworker/u16:0+events_unbound	19:33:02	5
1984135	99	29	28,0	cyclictest	0	-21	swapper/7	00:17:17	7
1984129	99	29	26,2	cyclictest	2093885	-21	kworker/u16:0+flush-8:0	20:37:02	5
1984135	99	28	26,2	cyclictest	124	-21	kswapd0	23:06:19	7
1984129	99	28	26,2	cyclictest	2075189	-21	kworker/u16:3+flush-8:0	20:28:38	5
1984135	99	27	26,0	cyclictest	0	-21	swapper/7	22:17:20	7
1984129	99	27	25,2	cyclictest	2171517	-21	kworker/u16:4+events_unbound	21:02:13	5
1984129	99	27	25,2	cyclictest	2075189	-21	kworker/u16:3+events_unbound	20:57:51	5
1984135	99	26	25,0	cyclictest	0	-21	swapper/7	21:47:10	7
1984129	99	26	24,2	cyclictest	2075189	-21	kworker/u16:3+events_unbound	20:35:22	5
1984135	99	25	22,2	cyclictest	2366243	-21	idleruntime-cro	22:06:51	7
1984135	99	24	23,0	cyclictest	0	-21	swapper/7	22:32:15	7
1984135	99	24	19,4	cyclictest	2378396	-21	latency_hist	22:11:52	7
1984129	99	24	22,2	cyclictest	2122852	-21	kworker/u16:2+events_unbound	20:50:37	5
1984129	99	24	22,2	cyclictest	2122852	-21	kworker/u16:2+events_unbound	20:50:37	5
1984129	99	24	22,2	cyclictest	2075189	-21	kworker/u16:3+flush-8:0	20:04:14	5
1984129	99	24	22,2	cyclictest	1299105	-21	kworker/u16:4+events_unbound	19:31:05	5
1984135	99	23	18,4	cyclictest	2065176	-21	latency_hist	19:46:52	7
1984129	99	23	21,2	cyclictest	2093885	-21	kworker/u16:0+events_unbound	20:22:21	5
1984129	99	23	21,2	cyclictest	2075189	-21	kworker/u16:3+events_unbound	19:53:06	5
1984125	99	23	21,2	cyclictest	2474254	-21	kworker/u16:0+flush-8:0	23:17:03	4
2488435	2	22	0,1	chrt	0	-21	swapper/6	22:56:52	6
1984135	99	22	22,0	cyclictest	0	-21	swapper/7	22:27:14	7
1984135	99	22	0,20	cyclictest	2026605	-21	cat	19:26:52	7
1984131	99	22	19,2	cyclictest	2425541	-21	kworker/u16:2+events_unbound	22:32:05	6
1984135	99	21	20,0	cyclictest	0	-21	swapper/7	19:17:14	7
1984135	99	21	16,4	cyclictest	2244251	-21	latency_hist	21:16:52	7
1984129	99	21	19,2	cyclictest	2104220	-21	kworker/u16:1+events_unbound	20:09:50	5
1984129	99	21	19,2	cyclictest	2045861	-21	kworker/u16:2+events_unbound	19:41:55	5
1984125	99	21	18,2	cyclictest	2425592	-21	kworker/u16:3+flush-8:0	23:07:12	4
1984135	99	20	0,18	cyclictest	2084558	-21	sed	19:56:52	7
1984129	99	20	18,2	cyclictest	1983881	-21	kworker/u16:2+events_unbound	19:13:06	5
1984129	99	20	18,2	cyclictest	1983881	-21	kworker/u16:2+events_unbound	19:13:06	5
1984129	99	20	18,2	cyclictest	1299105	-21	kworker/u16:4+events_unbound	19:23:14	5
1984125	99	19	17,2	cyclictest	2474254	-21	kworker/u16:0+flush-8:0	23:27:17	4
1984125	99	19	17,2	cyclictest	2474254	-21	kworker/u16:0+flush-8:0	23:27:17	4
1984129	99	18	16,2	cyclictest	1973942	-21	kworker/u16:1+flush-8:0	19:39:49	5
1984135	99	17	8,8	cyclictest	0	-21	swapper/7	22:47:08	7
1984135	99	17	8,8	cyclictest	0	-21	swapper/7	22:47:08	7
1984135	99	17	17,0	cyclictest	0	-21	swapper/7	23:42:14	7
1984135	99	17	16,0	cyclictest	0	-21	swapper/7	22:37:07	7
1984135	99	17	12,4	cyclictest	2681716	-21	latency_hist	00:16:51	7
1984135	99	17	11,5	cyclictest	650	-21	systemd-journal	21:16:53	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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