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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 Sun Dec 14, 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
825345	2	42	7,30	sleep7	0	-21	swapper/7	19:04:58	7
6265	89	40	0,33	rtkit-daemon	0	-21	swapper/6	19:05:29	6
834907	99	37	31,5	cyclictest	1062409	-21	latency_hist	21:04:53	7
834907	99	37	0,35	cyclictest	926180	-21	latency_hist	19:54:53	7
834468	2	37	27,7	sleep5	0	-21	swapper/5	19:07:53	5
834906	99	33	31,2	cyclictest	1335404	-21	kworker/u16:4+flush-8:0	23:25:08	6
834906	99	33	31,2	cyclictest	1043290	-21	kworker/u16:2+flush-8:0	21:40:07	6
834907	99	32	0,30	cyclictest	1315584	-21	latency_hist	23:14:52	7
834907	99	32	0,30	cyclictest	1315584	-21	latency_hist	23:14:52	7
834906	99	32	30,2	cyclictest	824604	-21	kworker/u16:2+flush-8:0	19:10:03	6
834901	99	32	29,2	cyclictest	834297	-21	kworker/u16:3+events_unbound	19:14:55	5
834907	99	31	25,5	cyclictest	1130558	-21	latency_hist	21:39:53	7
834906	99	30	28,2	cyclictest	1383486	-21	kworker/u16:0+events_unbound	23:50:05	6
834907	99	29	23,5	cyclictest	965100	-21	latency_hist	20:14:53	7
834906	99	29	27,2	cyclictest	1335404	-21	kworker/u16:4+flush-8:0	00:35:07	6
834906	99	28	26,2	cyclictest	1335404	-21	kworker/u16:4+flush-8:0	00:05:08	6
834906	99	28	26,2	cyclictest	1208828	-21	kworker/u16:4+events_unbound	22:55:06	6
834402	2	28	18,7	sleep4	0	-21	swapper/4	19:06:56	4
834906	99	27	25,2	cyclictest	1392662	-21	kworker/u16:1+events_unbound	00:00:05	6
834906	99	27	25,2	cyclictest	1392662	-21	kworker/u16:1+events_unbound	00:00:05	6
834901	99	27	25,2	cyclictest	1354585	-21	kworker/u16:3+flush-8:0	23:50:17	5
834897	99	27	25,2	cyclictest	848734	-21	kworker/u16:0+flush-8:0	20:49:53	4
834897	99	27	25,2	cyclictest	848734	-21	kworker/u16:0+flush-8:0	20:49:53	4
834907	99	26	0,24	cyclictest	1305877	-21	latency_hist	23:09:52	7
834906	99	26	24,2	cyclictest	1208828	-21	kworker/u16:4+events_unbound	23:00:07	6
834897	99	26	24,2	cyclictest	542004	-21	kworker/u16:8+events_unbound	21:08:14	4
834906	99	25	23,2	cyclictest	848734	-21	kworker/u16:0+events_unbound	20:25:06	6
834897	99	25	23,2	cyclictest	1266154	-21	kworker/u16:0+flush-8:0	23:32:14	4
834897	99	25	23,2	cyclictest	1062637	-21	kworker/u16:3+flush-8:0	21:40:18	4
834906	99	24	22,2	cyclictest	1266154	-21	kworker/u16:0+events_unbound	23:40:07	6
834901	99	24	22,2	cyclictest	1062637	-21	kworker/u16:3+flush-8:0	21:14:53	5
834897	99	24	22,2	cyclictest	1179013	-21	kworker/u16:2+flush-8:0	23:15:14	4
834907	99	23	20,1	cyclictest	1403167	-21	munin-run	23:59:52	7
834906	99	23	21,2	cyclictest	1043290	-21	kworker/u16:2+events_unbound	21:20:07	6
834897	99	23	21,2	cyclictest	995158	-21	kworker/u16:3+flush-8:0	20:50:22	4
834897	99	23	21,2	cyclictest	1208423	-21	kworker/u16:3+flush-8:0	22:23:38	4
834897	99	23	21,2	cyclictest	1074298	-21	kworker/u16:1+events_unbound	21:58:14	4
834897	99	23	20,2	cyclictest	542004	-21	kworker/u16:8+events_unbound	20:24:55	4
834906	99	22	20,2	cyclictest	1208828	-21	kworker/u16:4+events_unbound	22:25:04	6
834897	99	22	20,2	cyclictest	1335404	-21	kworker/u16:4+events_unbound	23:44:52	4
834897	99	22	20,2	cyclictest	1286183	-21	kworker/u16:1+flush-8:0	23:25:14	4
834897	99	22	20,2	cyclictest	1062637	-21	kworker/u16:3+events_unbound	21:35:59	4
834897	99	21	19,2	cyclictest	542004	-21	kworker/u16:8+events_unbound	19:39:50	4
834897	99	21	19,2	cyclictest	1208423	-21	kworker/u16:3+events_unbound	22:41:15	4
834897	99	21	18,2	cyclictest	123314	-21	kworker/u16:1+events_unbound	21:00:03	4
834897	99	20	19,1	cyclictest	542004	-21	kworker/u16:8+flush-8:0	20:10:15	4
834897	99	20	18,2	cyclictest	848734	-21	kworker/u16:0+flush-8:0	19:52:15	4
834897	99	20	18,2	cyclictest	1286183	-21	kworker/u16:1+flush-8:0	23:03:13	4
834897	99	20	18,2	cyclictest	1111553	-21	kworker/u16:0+flush-8:0	22:13:13	4
834906	99	19	17,2	cyclictest	1286183	-21	kworker/u16:1+events_unbound	23:15:04	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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