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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 15, 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
2550377	2	73	0,1	sleep4	2550379	-21	awk	23:50:11	4
1992517	2	67	56,8	sleep6	0	-21	swapper/6	19:05:54	6
1992781	2	55	45,7	sleep4	0	-21	swapper/4	19:09:37	4
1992518	2	54	19,30	sleep7	0	-21	swapper/7	19:05:55	7
1992708	2	43	33,7	sleep5	0	-21	swapper/5	19:08:34	5
1993086	99	30	24,5	cyclictest	2162224	-21	latency_hist	20:34:49	7
1993086	99	28	22,5	cyclictest	2298369	-21	latency_hist	21:44:49	7
1993080	99	28	26,2	cyclictest	2562303	-21	kworker/u16:3+events_unbound	00:10:17	6
1993080	99	28	25,3	cyclictest	1987262	-21	kworker/u16:2+flush-8:0	19:55:15	6
1993075	99	27	24,2	cyclictest	2562303	-21	kworker/u16:3+flush-8:0	00:20:04	4
1993086	99	26	20,5	cyclictest	2629354	-21	latency_hist	00:34:49	7
1993080	99	26	24,2	cyclictest	2394749	-21	kworker/u16:2+flush-8:0	22:54:48	6
1993076	99	26	24,2	cyclictest	2436018	-21	kworker/u16:1+events_unbound	23:21:00	5
1993076	99	26	24,2	cyclictest	2293938	-21	kworker/u16:0+events_unbound	21:54:51	5
1993076	99	26	24,2	cyclictest	2270819	-21	kworker/u16:1+flush-8:0	21:40:07	5
1993076	99	26	24,2	cyclictest	2142429	-21	kworker/u16:2+events_unbound	21:05:19	5
1993086	99	25	23,1	cyclictest	0	-21	swapper/7	19:45:05	7
1993080	99	25	23,2	cyclictest	2366992	-21	kworker/u16:1+events_unbound	22:38:12	6
1993080	99	25	23,2	cyclictest	2366992	-21	kworker/u16:1+events_unbound	22:38:12	6
1993076	99	25	22,2	cyclictest	2503098	-21	kworker/u16:0+events_unbound	00:09:50	5
1993080	99	24	22,2	cyclictest	2142429	-21	kworker/u16:2+events_unbound	20:40:37	6
1993080	99	24	22,2	cyclictest	2122371	-21	kworker/u16:4+events_unbound	20:14:20	6
1993080	99	24	22,2	cyclictest	2122371	-21	kworker/u16:4+events_unbound	20:14:20	6
1993080	99	24	22,2	cyclictest	2055060	-21	kworker/u16:0+events_unbound	20:00:51	6
1993076	99	24	22,2	cyclictest	2503098	-21	kworker/u16:0+events_unbound	00:36:11	5
1993076	99	24	22,2	cyclictest	2453753	-21	kworker/u16:2+events_unbound	23:49:03	5
1993076	99	24	22,2	cyclictest	2436018	-21	kworker/u16:1+events_unbound	23:03:19	5
1993075	99	24	21,2	cyclictest	2503098	-21	kworker/u16:0+events_unbound	23:30:02	4
1993086	99	23	18,4	cyclictest	2356861	-21	latency_hist	22:14:49	7
1993086	99	23	0,22	cyclictest	2113562	-21	latency_hist	20:09:49	7
1993080	99	23	21,2	cyclictest	1286633	-21	kworker/u16:3+events_unbound	20:06:59	6
1993076	99	23	21,2	cyclictest	2317547	-21	kworker/u16:4+events_unbound	21:54:20	5
1993076	99	23	21,2	cyclictest	2293938	-21	kworker/u16:0+events_unbound	22:23:21	5
1993076	99	23	21,2	cyclictest	2259698	-21	kworker/u16:4+events_unbound	21:27:20	5
1993076	99	23	21,2	cyclictest	2171770	-21	kworker/u16:0+events_unbound	21:02:48	5
1993076	99	23	21,2	cyclictest	2171770	-21	kworker/u16:0+events_unbound	21:02:48	5
1993076	99	23	21,2	cyclictest	2102854	-21	kworker/u16:1+flush-8:0	20:19:20	5
1993076	99	23	21,2	cyclictest	2064161	-21	kworker/u16:4+events_unbound	19:47:40	5
1993076	99	23	21,2	cyclictest	1987262	-21	kworker/u16:2+events_unbound	19:42:33	5
1993086	99	22	21,0	cyclictest	0	-21	swapper/7	23:45:08	7
1993080	99	22	20,2	cyclictest	2503098	-21	kworker/u16:0+events_unbound	00:00:50	6
1993080	99	22	20,2	cyclictest	2462747	-21	kworker/u16:4+events_unbound	23:14:20	6
1993080	99	22	20,2	cyclictest	2453753	-21	kworker/u16:2+events_unbound	23:21:20	6
1993080	99	22	20,2	cyclictest	2191279	-21	kworker/u16:1+events_unbound	20:50:37	6
1993076	99	22	20,2	cyclictest	2293938	-21	kworker/u16:0+events_unbound	23:19:40	5
1993076	99	22	20,2	cyclictest	2142429	-21	kworker/u16:2+events_unbound	20:50:57	5
1993080	99	21	19,2	cyclictest	2220386	-21	kworker/u16:1+events_unbound	21:17:00	6
1993080	99	21	19,2	cyclictest	2142429	-21	kworker/u16:2+events_unbound	21:43:00	6
1993080	99	21	19,2	cyclictest	1987262	-21	kworker/u16:2+events_unbound	19:12:00	6
1993076	99	21	19,2	cyclictest	2522574	-21	kworker/u16:1+events_unbound	23:41:20	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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