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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 Mon Feb 16, 2026 12:43:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1168382	2	106	0,1	sleep7	1168383	-21	ssh	10:24:58	7
1324352	2	92	0,1	sleep6	0	-21	swapper/6	11:28:20	6
743041	2	55	45,7	sleep4	0	-21	swapper/4	07:03:59	4
743436	99	46	40,5	cyclictest	1012272	-21	latency_hist	09:20:34	7
743436	99	45	36,8	cyclictest	1179070	-21	pool-gnome-soft	10:27:34	7
743432	99	40	37,2	cyclictest	1277373	-21	kworker/u16:0+flush-8:0	11:10:34	6
742866	2	40	3,31	sleep7	0	-21	swapper/7	07:01:29	7
743427	99	39	36,2	cyclictest	879846	-21	kworker/u16:2+events_unbound	09:50:48	5
743016	2	39	29,7	sleep6	0	-21	swapper/6	07:03:36	6
743436	99	38	32,5	cyclictest	833015	-21	latency_hist	07:50:34	7
743423	99	38	35,2	cyclictest	1095013	-21	kworker/u16:1+flush-8:0	11:40:34	4
743432	99	37	35,2	cyclictest	918609	-21	kworker/u16:3+flush-8:0	08:40:34	6
743427	99	37	33,3	cyclictest	1155465	-21	kworker/u16:0+flush-8:0	10:25:34	5
743427	99	36	35,1	cyclictest	1095013	-21	kworker/u16:1+events_unbound	11:31:48	5
743423	99	35	33,2	cyclictest	1444007	-21	kworker/u16:0+events_unbound	12:20:55	4
743423	99	35	32,2	cyclictest	644986	-21	kworker/u16:1+events_unbound	08:35:47	4
743436	99	34	32,1	cyclictest	0	-21	swapper/7	11:25:54	7
743432	99	33	32,1	cyclictest	1095013	-21	kworker/u16:1+flush-8:0	10:06:04	6
743432	99	33	31,2	cyclictest	879846	-21	kworker/u16:2+flush-8:0	09:46:00	6
743432	99	32	30,2	cyclictest	1121003	-21	kworker/u16:3+flush-8:0	10:27:54	6
743427	99	32	30,2	cyclictest	1095013	-21	kworker/u16:1+flush-8:0	11:45:57	5
743427	99	32	30,2	cyclictest	1095013	-21	kworker/u16:1+flush-8:0	11:21:11	5
743436	99	31	28,2	cyclictest	1250830	-21	ssh	10:56:02	7
743436	99	31	25,5	cyclictest	899862	-21	latency_hist	08:25:35	7
743423	99	31	29,2	cyclictest	1095013	-21	kworker/u16:1+events_unbound	11:50:49	4
743436	99	30	25,4	cyclictest	650	-21	systemd-journal	09:55:34	7
743432	99	30	28,2	cyclictest	842711	-21	kworker/u16:3+flush-8:0	08:11:00	6
742968	2	30	19,8	sleep5	0	-21	swapper/5	07:02:55	5
743436	99	29	27,1	cyclictest	1459235	-21	ssh	12:25:46	7
743432	99	29	27,2	cyclictest	1361748	-21	kworker/u16:4+events_unbound	12:15:50	6
743427	99	29	26,2	cyclictest	785465	-21	kworker/u16:2+events_unbound	07:30:48	5
743423	99	29	27,2	cyclictest	1095013	-21	kworker/u16:1+events_unbound	12:30:49	4
743436	99	28	26,1	cyclictest	1310461	-21	ssh	11:20:59	7
743436	99	28	23,4	cyclictest	650	-21	systemd-journal	08:05:34	7
743432	99	28	26,2	cyclictest	899535	-21	kworker/u16:0+flush-8:0	08:31:00	6
743432	99	28	26,2	cyclictest	1277373	-21	kworker/u16:0+flush-8:0	11:36:03	6
743427	99	28	26,2	cyclictest	1095013	-21	kworker/u16:1+events_unbound	10:46:02	5
743423	99	28	25,2	cyclictest	879846	-21	kworker/u16:2+flush-8:0	10:00:44	4
743423	99	28	25,2	cyclictest	879846	-21	kworker/u16:2+flush-8:0	10:00:44	4
743423	99	28	25,2	cyclictest	1312217	-21	kworker/u16:2+events_unbound	11:25:46	4
743423	99	28	25,2	cyclictest	1155465	-21	kworker/u16:0+flush-8:0	10:28:03	4
743436	99	27	2,24	cyclictest	1024457	-21	sed	09:25:34	7
743436	99	27	21,5	cyclictest	937998	-21	latency_hist	08:45:34	7
743427	99	27	25,2	cyclictest	956947	-21	kworker/u16:0+events_unbound	09:15:47	5
743423	99	27	25,2	cyclictest	1095013	-21	kworker/u16:1+events_unbound	10:37:36	4
1228409	2	27	0,1	chrt	1228410	-21	sh	10:49:18	7
743432	99	26	24,2	cyclictest	1312217	-21	kworker/u16:2+events_unbound	12:05:36	6
743432	99	26	24,2	cyclictest	1312217	-21	kworker/u16:2+events_unbound	11:41:03	6
743427	99	26	24,2	cyclictest	1312217	-21	kworker/u16:2+flush-8:0	11:35:58	5
743427	99	26	24,2	cyclictest	1024367	-21	kworker/u16:3+events_unbound	09:40:59	5
743423	99	25	23,2	cyclictest	751913	-21	kworker/u16:4+events_unbound	07:20:52	4
743423	99	25	23,2	cyclictest	1361748	-21	kworker/u16:4+flush-8:0	12:15:29	4
1240908	2	25	0,0	chrt	1240906	-21	ssh	10:55:03	7
743432	99	24	22,2	cyclictest	966789	-21	kworker/u16:1+events_unbound	09:00:52	6
743432	99	24	22,2	cyclictest	879846	-21	kworker/u16:2+flush-8:0	09:25:29	6
743432	99	24	22,2	cyclictest	1024367	-21	kworker/u16:3+events_unbound	09:40:36	6
743427	99	24	21,2	cyclictest	1095013	-21	kworker/u16:1+events_unbound	10:26:02	5
743423	99	24	22,2	cyclictest	1312217	-21	kworker/u16:2+events_unbound	11:45:52	4
743423	99	24	22,2	cyclictest	1217137	-21	kworker/u16:4+events_unbound	10:51:03	4
743423	99	24	21,3	cyclictest	1095013	-21	kworker/u16:1+flush-8:0	11:56:02	4
743423	99	24	21,3	cyclictest	1095013	-21	kworker/u16:1+flush-8:0	11:56:02	4
743423	99	24	21,2	cyclictest	644986	-21	kworker/u16:1+flush-8:0	08:45:51	4
743432	99	23	21,2	cyclictest	918609	-21	kworker/u16:3+events_unbound	08:50:52	6
743432	99	23	21,2	cyclictest	879846	-21	kworker/u16:2+events_unbound	09:07:24	6
743423	99	23	20,2	cyclictest	879846	-21	kworker/u16:2+events_unbound	08:25:49	4
743436	99	22	18,3	cyclictest	902	-21	dbus-daemon	11:20:33	7
743436	99	22	18,3	cyclictest	902	-21	dbus-daemon	11:20:33	7
743427	99	22	19,2	cyclictest	1217137	-21	kworker/u16:4+events_unbound	10:50:47	5
743423	99	22	20,2	cyclictest	879846	-21	kworker/u16:2+flush-8:0	10:10:29	4
743436	99	21	21,0	cyclictest	0	-21	swapper/7	11:55:52	7
743436	99	21	21,0	cyclictest	0	-21	swapper/7	11:55:52	7
743436	99	21	20,0	cyclictest	0	-21	swapper/7	10:15:50	7
743436	99	21	20,0	cyclictest	0	-21	swapper/7	09:35:51	7
743432	99	21	19,2	cyclictest	918609	-21	kworker/u16:3+flush-8:0	08:45:34	6
743432	99	21	17,3	cyclictest	918609	-21	kworker/u16:3+flush-8:0	08:45:54	6
743427	99	21	18,2	cyclictest	918609	-21	kworker/u16:3+flush-8:0	08:55:51	5
743423	99	21	18,2	cyclictest	832690	-21	kworker/u16:2+flush-8:0	07:55:34	4
743436	99	20	19,1	cyclictest	0	-21	swapper/7	12:10:51	7
743436	99	20	19,0	cyclictest	0	-21	swapper/7	11:45:48	7
743436	99	20	18,1	cyclictest	1330706	-21	ssh	11:30:53	7
743432	99	20	18,2	cyclictest	39245	-21	kworker/u16:0+flush-8:0	07:06:00	6
743432	99	20	18,2	cyclictest	1361748	-21	kworker/u16:4+flush-8:0	11:55:55	6
743432	99	20	18,2	cyclictest	1361748	-21	kworker/u16:4+flush-8:0	11:55:55	6
743432	99	20	18,2	cyclictest	1095013	-21	kworker/u16:1+events_unbound	12:20:47	6
743423	99	20	18,2	cyclictest	1095013	-21	kworker/u16:1+events_unbound	11:16:02	4
743423	99	20	18,2	cyclictest	1095013	-21	kworker/u16:1+events_unbound	11:16:02	4
743423	99	20	17,2	cyclictest	1095013	-21	kworker/u16:1+flush-8:0	11:10:50	4
743436	99	19	19,0	cyclictest	0	-21	swapper/7	10:40:48	7
743436	99	19	17,1	cyclictest	976151	-21	diskmemload	10:35:51	7
743436	99	19	14,4	cyclictest	1096480	-21	latency_hist	09:55:34	7
743432	99	19	17,2	cyclictest	842711	-21	kworker/u16:3+flush-8:0	08:20:50	6
743432	99	19	17,2	cyclictest	1155465	-21	kworker/u16:0+events_unbound	10:41:03	6
743427	99	19	17,2	cyclictest	751913	-21	kworker/u16:4+flush-8:0	07:25:34	5
743423	99	19	16,3	cyclictest	1024367	-21	kworker/u16:3+events_unbound	09:50:59	4
743436	99	18	17,0	cyclictest	0	-21	swapper/7	07:35:49	7
743436	99	18	13,4	cyclictest	957044	-21	latency_hist	08:55:34	7
743432	99	18	16,2	cyclictest	1457144	-21	kworker/u16:2+events_unbound	12:27:39	6
743432	99	18	16,2	cyclictest	1312217	-21	kworker/u16:2+events_unbound	11:46:35	6
743432	99	18	16,2	cyclictest	1121003	-21	kworker/u16:3+events_unbound	10:22:56	6
743432	99	18	15,2	cyclictest	0	-21	swapper/6	08:00:46	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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