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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 Mon Dec 29, 2025 00:43:32)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1409339	2	66	55,8	sleep6	0	-21	swapper/6	19:06:58	6
1409385	2	57	47,7	sleep4	0	-21	swapper/4	19:07:36	4
1401073	2	55	20,29	sleep7	0	-21	swapper/7	19:04:10	7
1409377	2	39	28,8	sleep5	0	-21	swapper/5	19:07:29	5
1409777	99	37	34,2	cyclictest	1635733	-21	kworker/u16:1+flush-8:0	21:38:54	5
1409772	99	36	34,2	cyclictest	1809653	-21	kworker/u16:0+events_unbound	22:58:53	4
1409772	99	36	34,2	cyclictest	1809653	-21	kworker/u16:0+events_unbound	22:58:53	4
1409772	99	35	33,2	cyclictest	1409490	-21	kworker/u16:1+events_unbound	19:43:54	4
1409785	99	34	31,2	cyclictest	1994703	-21	cat	00:08:53	7
1409785	99	34	31,2	cyclictest	1655395	-21	awk	21:13:53	7
1409777	99	33	31,2	cyclictest	1809653	-21	kworker/u16:0+events_unbound	22:58:55	5
1409777	99	33	30,2	cyclictest	1809653	-21	kworker/u16:0+flush-8:0	22:54:12	5
1409777	99	33	30,2	cyclictest	1809653	-21	kworker/u16:0+flush-8:0	22:54:12	5
1409780	99	32	29,2	cyclictest	1965888	-21	kworker/u16:3+flush-8:0	00:04:09	6
1409777	99	31	29,2	cyclictest	1432835	-21	kworker/u16:0+flush-8:0	19:29:16	5
1409777	99	30	28,2	cyclictest	1995001	-21	kworker/u16:0+events_unbound	00:12:00	5
1409777	99	30	27,2	cyclictest	1792248	-21	kworker/u16:1+events_unbound	00:14:01	5
1409777	99	29	27,2	cyclictest	1762379	-21	kworker/u16:3+events_unbound	22:18:04	5
1409777	99	29	27,2	cyclictest	1582550	-21	kworker/u16:0+events_unbound	20:43:05	5
1409777	99	29	27,2	cyclictest	1142872	-21	kworker/u16:4+events_unbound	19:54:16	5
1409777	99	29	26,2	cyclictest	1809653	-21	kworker/u16:0+events_unbound	22:39:03	5
1409777	99	28	26,2	cyclictest	1868754	-21	kworker/u16:3+events_unbound	23:10:05	5
1409777	99	28	26,2	cyclictest	1792248	-21	kworker/u16:1+events_unbound	23:18:53	5
1409777	99	28	26,2	cyclictest	1762379	-21	kworker/u16:3+events_unbound	22:29:03	5
1409777	99	28	26,2	cyclictest	1635733	-21	kworker/u16:1+events_unbound	21:05:06	5
1409777	99	28	26,2	cyclictest	1558652	-21	kworker/u16:1+flush-8:0	20:25:05	5
1409772	99	28	25,2	cyclictest	1995001	-21	kworker/u16:0+flush-8:0	00:38:53	4
1409777	99	27	25,2	cyclictest	1878378	-21	kworker/u16:4+events_unbound	23:56:03	5
1409777	99	27	25,2	cyclictest	1792248	-21	kworker/u16:1+events_unbound	23:21:04	5
1409777	99	27	25,2	cyclictest	1409490	-21	kworker/u16:1+events_unbound	19:47:04	5
1409777	99	27	25,2	cyclictest	1409490	-21	kworker/u16:1+events_unbound	19:47:04	5
1409777	99	27	24,2	cyclictest	1635733	-21	kworker/u16:1+flush-8:0	21:44:04	5
1409772	99	27	24,2	cyclictest	1995001	-21	kworker/u16:0+flush-8:0	00:23:58	4
1409785	99	26	25,0	cyclictest	0	-21	swapper/7	20:04:12	7
1409777	99	26	24,2	cyclictest	1792248	-21	kworker/u16:1+events_unbound	23:53:03	5
1409777	99	26	24,2	cyclictest	1792248	-21	kworker/u16:1+events_unbound	23:47:15	5
1409777	99	26	24,2	cyclictest	1703832	-21	kworker/u16:0+events_unbound	22:08:04	5
1409777	99	26	24,2	cyclictest	1703832	-21	kworker/u16:0+events_unbound	22:08:04	5
1409777	99	26	24,2	cyclictest	1568284	-21	kworker/u16:2+events_unbound	20:33:05	5
1409777	99	26	24,2	cyclictest	1432835	-21	kworker/u16:0+flush-8:0	19:26:12	5
1409777	99	26	23,2	cyclictest	1432835	-21	kworker/u16:0+flush-8:0	19:19:04	5
1409785	99	25	24,0	cyclictest	0	-21	swapper/7	23:14:00	7
1409777	99	25	23,2	cyclictest	1896746	-21	kworker/u16:2+events_unbound	23:32:00	5
1409777	99	25	23,2	cyclictest	1762379	-21	kworker/u16:3+flush-8:0	22:22:16	5
1409777	99	25	23,2	cyclictest	1762379	-21	kworker/u16:3+events_unbound	22:38:00	5
1409777	99	25	23,2	cyclictest	1674892	-21	kworker/u16:2+events_unbound	21:28:16	5
1409772	99	25	23,2	cyclictest	1142872	-21	kworker/u16:4+flush-8:0	21:19:16	4
1409772	99	25	23,2	cyclictest	1142872	-21	kworker/u16:4+flush-8:0	21:19:16	4
1409785	99	24	23,0	cyclictest	0	-21	swapper/7	00:22:37	7
1409785	99	24	19,4	cyclictest	1674704	-21	latency_hist	21:23:54	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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