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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 Thu Dec 25, 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
976813	2	54	44,7	sleep5	0	-21	swapper/5	19:05:32	5
977024	2	52	19,29	sleep7	0	-21	swapper/7	19:08:31	7
977032	2	51	41,7	sleep6	0	-21	swapper/6	19:08:38	6
977372	99	48	42,5	cyclictest	1358066	-21	latency_hist	22:24:09	7
976935	2	45	34,8	sleep4	0	-21	swapper/4	19:07:16	4
977367	99	44	42,2	cyclictest	938712	-21	kworker/u16:1+flush-8:0	19:14:10	6
977363	99	42	40,2	cyclictest	1129883	-21	kworker/u16:2+flush-8:0	20:29:09	5
977372	99	39	33,5	cyclictest	1212963	-21	latency_hist	21:09:09	7
977367	99	39	37,2	cyclictest	938712	-21	kworker/u16:1+events_unbound	19:34:24	6
977367	99	39	37,2	cyclictest	1309944	-21	kworker/u16:3+flush-8:0	23:24:09	6
977363	99	39	37,2	cyclictest	1474526	-21	kworker/u16:1+flush-8:0	00:14:24	5
977367	99	38	36,2	cyclictest	1406774	-21	kworker/u16:0+flush-8:0	23:09:25	6
1477441	2	38	0,0	sleep7	1477444	-21	cut	23:24:30	7
977367	99	37	35,2	cyclictest	991066	-21	kworker/u16:0+events_unbound	20:49:05	6
977367	99	37	35,2	cyclictest	1338538	-21	kworker/u16:1+events_unbound	22:34:24	6
977367	99	36	34,2	cyclictest	1464469	-21	kworker/u16:5+flush-8:0	23:54:09	6
977367	99	36	34,2	cyclictest	1299819	-21	kworker/u16:4+events_unbound	22:09:09	6
977367	99	36	34,2	cyclictest	1299819	-21	kworker/u16:4+events_unbound	22:09:09	6
977367	99	35	33,2	cyclictest	1464469	-21	kworker/u16:5+events_unbound	23:39:36	6
977367	99	35	33,2	cyclictest	1464469	-21	kworker/u16:5+events_unbound	23:39:36	6
977363	99	35	33,2	cyclictest	991066	-21	kworker/u16:0+flush-8:0	19:59:28	5
977363	99	35	33,2	cyclictest	1309944	-21	kworker/u16:3+events_unbound	23:04:33	5
977372	99	34	28,5	cyclictest	1010010	-21	latency_hist	19:24:10	7
977367	99	34	32,2	cyclictest	261336	-21	kworker/u16:4+events_unbound	19:39:25	6
977372	99	33	28,4	cyclictest	1077737	-21	latency_hist	19:59:10	7
977367	99	33	31,2	cyclictest	1571348	-21	kworker/u16:3+events_unbound	00:19:22	6
977367	99	32	30,2	cyclictest	1406774	-21	kworker/u16:0+events_unbound	23:04:04	6
977363	99	32	30,2	cyclictest	1338532	-21	kworker/u16:0+events_unbound	22:17:20	5
1233316	2	32	0,1	chrt	1233317	-21	fschecks_time	21:19:22	7
977367	99	31	29,2	cyclictest	261336	-21	kworker/u16:4+flush-8:0	19:54:04	6
977367	99	31	28,2	cyclictest	1106914	-21	kworker/u16:3+events_unbound	20:19:29	6
977363	99	31	29,2	cyclictest	1561063	-21	kworker/u16:0+events_unbound	00:38:08	5
977363	99	31	29,2	cyclictest	1106914	-21	kworker/u16:3+events_unbound	20:33:21	5
977363	99	31	29,2	cyclictest	1106914	-21	kworker/u16:3+events_unbound	20:33:21	5
977363	99	31	28,2	cyclictest	1464469	-21	kworker/u16:5+events_unbound	23:59:32	5
977363	99	30	28,2	cyclictest	1106914	-21	kworker/u16:3+events_unbound	20:19:39	5
977363	99	30	27,2	cyclictest	1406774	-21	kworker/u16:0+flush-8:0	22:54:24	5
977363	99	30	27,2	cyclictest	1406774	-21	kworker/u16:0+flush-8:0	22:54:24	5
977372	99	29	28,0	cyclictest	0	-21	swapper/7	20:28:36	7
977372	99	29	28,0	cyclictest	0	-21	swapper/7	20:02:31	7
977363	99	29	27,2	cyclictest	1493833	-21	kworker/u16:0+events_unbound	23:42:24	5
977363	99	29	27,2	cyclictest	1493833	-21	kworker/u16:0+events_unbound	23:42:24	5
977363	99	29	27,2	cyclictest	1474526	-21	kworker/u16:1+flush-8:0	23:34:36	5
977363	99	29	27,2	cyclictest	1474526	-21	kworker/u16:1+events_unbound	00:12:36	5
977363	99	29	27,2	cyclictest	1309944	-21	kworker/u16:3+events_unbound	22:45:20	5
977363	99	29	27,2	cyclictest	1173273	-21	kworker/u16:1+events_unbound	21:19:21	5
977363	99	29	27,2	cyclictest	1106914	-21	kworker/u16:3+events_unbound	20:34:36	5
977363	99	29	26,2	cyclictest	261336	-21	kworker/u16:4+flush-8:0	19:49:20	5
977355	99	29	27,2	cyclictest	1299819	-21	kworker/u16:4+events_unbound	22:06:35	4
977355	99	29	27,2	cyclictest	1299819	-21	kworker/u16:4+events_unbound	22:06:35	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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