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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 Tue Jul 21, 2026 12:43:29)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3878107	2	52	17,30	sleep7	0	-21	swapper/7	07:09:14	7
3878037	2	43	33,7	sleep5	0	-21	swapper/5	07:08:16	5
3878390	99	40	37,2	cyclictest	20441	-21	kworker/u16:3+flush-8:0	09:54:35	5
3878390	99	40	37,2	cyclictest	20441	-21	kworker/u16:3+flush-8:0	09:54:35	5
3878390	99	38	37,1	cyclictest	131397	-21	kworker/u16:2+events_unbound	10:59:00	5
3878390	99	37	34,2	cyclictest	177222	-21	kworker/u16:0+events_unbound	10:59:30	5
3877921	2	36	24,8	sleep4	0	-21	swapper/4	07:06:39	4
3878390	99	35	30,4	cyclictest	241262	-21	packagekitd	11:18:21	5
3878038	2	35	10,8	sleep6	0	-21	swapper/6	07:08:17	6
3878388	99	33	29,3	cyclictest	241279	-21	pool-/usr/libex	11:18:22	4
3878390	99	32	30,2	cyclictest	3910360	-21	kworker/u16:4+events_unbound	07:24:55	5
3878390	99	31	29,2	cyclictest	193115	-21	kworker/u16:3+events_unbound	11:36:59	5
3878390	99	31	29,2	cyclictest	131397	-21	kworker/u16:2+events_unbound	10:49:55	5
3878390	99	31	28,2	cyclictest	4066810	-21	kworker/u16:4+flush-8:0	08:44:46	5
105192	2	31	0,1	chrt	105193	-21	sh	10:22:08	7
3878390	99	30	28,2	cyclictest	32847	-21	kworker/u16:4+flush-8:0	10:14:55	5
3878398	99	29	24,4	cyclictest	648	-21	systemd-journal	11:14:29	7
3878390	99	29	26,3	cyclictest	4095587	-21	kworker/u16:0+flush-8:0	09:44:55	5
364276	2	29	0,1	chrt	364277	-21	sh	12:08:11	7
3878390	99	28	26,2	cyclictest	57500	-21	kworker/u16:0+events_unbound	10:29:59	5
3878390	99	28	26,2	cyclictest	411803	-21	kworker/u16:2+events_unbound	12:36:59	5
277000	2	28	0,1	chrt	277001	-21	sh	11:31:00	7
3878390	99	27	25,2	cyclictest	4066810	-21	kworker/u16:4+flush-8:0	09:10:03	5
3878390	99	27	24,2	cyclictest	4095587	-21	kworker/u16:0+flush-8:0	09:19:50	5
3878390	99	26	25,1	cyclictest	290236	-21	kworker/u16:2+events_unbound	11:49:27	5
3878390	99	26	24,2	cyclictest	4095587	-21	kworker/u16:0+events_unbound	09:35:00	5
3878390	99	26	24,2	cyclictest	32846	-21	kworker/u16:1+flush-8:0	10:04:46	5
3878390	99	26	24,2	cyclictest	316030	-21	kworker/u16:1+flush-8:0	11:59:55	5
3878390	99	26	24,2	cyclictest	316030	-21	kworker/u16:1+flush-8:0	11:59:55	5
3878390	99	26	23,2	cyclictest	193115	-21	kworker/u16:3+events_unbound	11:29:49	5
3878388	99	26	24,2	cyclictest	177222	-21	kworker/u16:0+events_unbound	11:03:22	4
3878390	99	25	23,2	cyclictest	57500	-21	kworker/u16:0+flush-8:0	10:09:44	5
3878390	99	25	23,2	cyclictest	4095587	-21	kworker/u16:0+events_unbound	09:29:46	5
3878390	99	25	23,2	cyclictest	177222	-21	kworker/u16:0+flush-8:0	11:04:40	5
3878394	99	24	21,2	cyclictest	3858916	-21	kworker/u16:3+flush-8:0	07:09:50	6
3878390	99	24	22,2	cyclictest	4186362	-21	kworker/u16:1+events_unbound	09:39:46	5
3878390	99	24	22,2	cyclictest	4150709	-21	kworker/u16:2+flush-8:0	09:26:01	5
3878390	99	24	22,2	cyclictest	4095587	-21	kworker/u16:0+events_unbound	09:50:40	5
3878390	99	24	22,2	cyclictest	350426	-21	kworker/u16:4+flush-8:0	12:04:56	5
3878390	99	24	22,2	cyclictest	193115	-21	kworker/u16:3+flush-8:0	11:39:50	5
3878390	99	23	20,2	cyclictest	20441	-21	kworker/u16:3+events_unbound	09:59:45	5
3878394	99	21	19,2	cyclictest	3950948	-21	kworker/u16:4+flush-8:0	07:50:27	6
3878394	99	21	19,2	cyclictest	3950948	-21	kworker/u16:4+flush-8:0	07:50:27	6
3878394	99	21	19,2	cyclictest	193115	-21	kworker/u16:3+flush-8:0	11:46:20	6
3878394	99	21	17,3	cyclictest	32559	-21	cat	09:54:30	6
3878394	99	21	17,3	cyclictest	266763	-21	cat	11:29:29	6
3878390	99	21	19,2	cyclictest	4095587	-21	kworker/u16:0+flush-8:0	09:04:43	5
3878390	99	21	16,4	cyclictest	168081	-21	latency_hist	10:49:30	5
3878388	99	21	19,2	cyclictest	20441	-21	kworker/u16:3+flush-8:0	10:05:35	4
3878394	99	20	17,2	cyclictest	32847	-21	kworker/u16:4+flush-8:0	11:18:42	6
3878390	99	20	18,2	cyclictest	411803	-21	kworker/u16:2+flush-8:0	12:30:11	5
3878390	99	20	18,2	cyclictest	3979557	-21	kworker/u16:2+flush-8:0	08:05:03	5
3878390	99	20	18,2	cyclictest	32847	-21	kworker/u16:4+flush-8:0	10:26:58	5
3878390	99	20	17,2	cyclictest	3858916	-21	kworker/u16:3+flush-8:0	07:09:45	5
3878390	99	19	17,2	cyclictest	3989279	-21	kworker/u16:1+flush-8:0	08:54:55	5
3878398	99	18	8,8	cyclictest	143435	-21	turbostat	10:39:30	7
3878398	99	18	14,3	cyclictest	1302	-21	snmpd	07:24:23	7
3878398	99	18	13,4	cyclictest	4067608	-21	cat	08:44:47	7
3878398	99	18	0,17	cyclictest	4047040	-21	turbostat	08:34:30	7
3878390	99	18	16,2	cyclictest	316030	-21	kworker/u16:1+flush-8:0	11:59:24	5
3878390	99	18	16,2	cyclictest	316030	-21	kworker/u16:1+flush-8:0	11:59:24	5
3878398	99	17	16,0	cyclictest	0	-21	swapper/7	11:49:29	7
3878398	99	17	15,1	cyclictest	69526	-21	turbostat	10:09:30	7
3878398	99	17	0,2	cyclictest	386416	-21	ssh	12:14:54	7
3878394	99	17	13,3	cyclictest	20119	-21	cat	09:49:30	6
3878390	99	17	15,2	cyclictest	57500	-21	kworker/u16:0+flush-8:0	10:34:54	5
3878390	99	17	15,2	cyclictest	411803	-21	kworker/u16:2+flush-8:0	12:29:25	5
3878390	99	17	15,2	cyclictest	3901460	-21	kworker/u16:0+flush-8:0	08:40:02	5
3878390	99	17	15,2	cyclictest	32847	-21	kworker/u16:4+events_unbound	10:21:56	5
3878390	99	17	15,2	cyclictest	290236	-21	kworker/u16:2+flush-8:0	12:10:03	5
3878390	99	17	15,2	cyclictest	254265	-21	kworker/u16:0+flush-8:0	11:25:01	5
3878388	99	17	14,2	cyclictest	0	-21	swapper/4	08:44:44	4
3878398	99	16	14,1	cyclictest	3979180	-21	turbostat	07:59:30	7
3878398	99	16	0,14	cyclictest	337291	-21	ssh	11:54:57	7
3878398	99	16	0,14	cyclictest	337291	-21	ssh	11:54:57	7
3878394	99	16	0,15	cyclictest	283651	-21	cut	11:34:49	6
3878390	99	16	14,2	cyclictest	32847	-21	kworker/u16:4+events_unbound	10:39:49	5
3878390	99	16	13,2	cyclictest	3989279	-21	kworker/u16:1+flush-8:0	08:39:30	5
3878388	99	16	15,1	cyclictest	0	-21	swapper/4	07:44:50	4
3878388	99	16	13,2	cyclictest	32847	-21	kworker/u16:4+flush-8:0	10:55:27	4
3878398	99	15	13,1	cyclictest	0	-21	swapper/7	11:39:55	7
3878398	99	15	12,2	cyclictest	1302	-21	snmpd	09:42:51	7
3878398	99	15	0,1	cyclictest	0	-21	swapper/7	08:59:56	7
3878398	99	15	0,14	cyclictest	239517	-21	sh	11:15:16	7
3878398	99	15	0,13	cyclictest	0	-21	swapper/7	10:49:55	7
3878398	99	15	0,13	cyclictest	0	-21	swapper/7	09:24:55	7
3878390	99	15	13,2	cyclictest	4008315	-21	kworker/u16:3+flush-8:0	08:34:30	5
3878390	99	15	13,2	cyclictest	375069	-21	kworker/u16:1+flush-8:0	12:14:57	5
3878398	99	14	13,0	cyclictest	0	-21	swapper/7	10:16:37	7
3878398	99	14	13,0	cyclictest	0	-21	swapper/7	07:24:55	7
3878398	99	14	0,1	cyclictest	0	-21	swapper/7	07:29:56	7
3878398	99	14	0,13	cyclictest	0	-21	swapper/7	10:54:53	7
3878394	99	14	13,1	cyclictest	0	-21	swapper/6	12:30:00	6
3878394	99	14	13,1	cyclictest	0	-21	swapper/6	12:06:12	6
3878394	99	14	13,1	cyclictest	0	-21	swapper/6	10:18:31	6
3878394	99	14	0,1	cyclictest	0	-21	swapper/6	12:14:42	6
3878394	99	14	0,1	cyclictest	0	-21	swapper/6	12:10:27	6
3878390	99	14	12,2	cyclictest	3901460	-21	kworker/u16:0+flush-8:0	07:40:00	5
3878390	99	14	0,14	cyclictest	0	-21	swapper/5	12:22:19	5
3878388	99	14	13,1	cyclictest	0	-21	swapper/4	11:27:08	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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