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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 Jan 13, 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
1114832	2	75	65,7	sleep5	0	-21	swapper/5	07:03:54	5
1114807	2	54	19,30	sleep7	0	-21	swapper/7	07:03:32	7
1115395	99	49	43,4	cyclictest	1531477	-21	latency_hist	10:27:49	7
1763840	2	47	0,0	sleep7	1763841	-21	sh	12:00:05	7
1114953	2	46	36,7	sleep4	0	-21	swapper/4	07:05:38	4
1651636	2	41	0,0	sleep7	1651637	-21	wc	11:13:17	7
1651636	2	41	0,0	sleep7	1651637	-21	wc	11:13:17	7
1115395	99	37	34,2	cyclictest	650	-21	systemd-journal	09:12:44	7
1115395	99	37	34,2	cyclictest	650	-21	systemd-journal	09:12:44	7
1115395	99	32	27,4	cyclictest	1506932	-21	latency_hist	10:17:50	7
1115395	99	31	29,1	cyclictest	1569453	-21	ssh	10:43:03	7
1115394	99	31	29,2	cyclictest	1630571	-21	kworker/u16:1+events_unbound	11:48:12	6
1115395	99	30	25,4	cyclictest	1777756	-21	latency_hist	12:07:49	7
1115059	2	29	19,7	sleep6	0	-21	swapper/6	07:07:08	6
1469422	2	27	0,1	chrt	1469421	-21	ssh	10:01:52	7
1115394	99	27	25,2	cyclictest	1741082	-21	kworker/u16:3+events_unbound	11:57:58	6
1115395	99	26	20,5	cyclictest	650	-21	systemd-journal	11:22:49	7
1115394	99	26	24,2	cyclictest	1617876	-21	kworker/u16:4+events_unbound	11:18:18	6
1115394	99	26	24,2	cyclictest	1502304	-21	kworker/u16:1+events_unbound	10:13:48	6
1115394	99	25	23,2	cyclictest	1566693	-21	kworker/u16:0+events_unbound	10:59:24	6
1115394	99	25	23,2	cyclictest	1094676	-21	kworker/u16:1+events_unbound	09:14:02	6
1115394	99	25	23,2	cyclictest	1094676	-21	kworker/u16:1+events_unbound	07:23:04	6
1115386	99	25	21,3	cyclictest	1236464	-21	kworker/u16:3+flush-8:0	08:18:06	4
1115394	99	24	22,2	cyclictest	1617876	-21	kworker/u16:4+events_unbound	11:17:44	6
1115394	99	24	22,2	cyclictest	1617876	-21	kworker/u16:4+events_unbound	11:17:44	6
1115394	99	24	22,2	cyclictest	1333128	-21	kworker/u16:3+flush-8:0	09:30:21	6
1115394	99	24	22,2	cyclictest	1275276	-21	kworker/u16:2+events_unbound	08:33:02	6
1115394	99	24	22,2	cyclictest	1177847	-21	kworker/u16:4+events_unbound	07:43:14	6
1115394	99	24	22,2	cyclictest	1139705	-21	kworker/u16:0+events_unbound	07:53:15	6
1115390	99	24	22,2	cyclictest	1215915	-21	kworker/u16:2+flush-8:0	08:03:11	5
1115390	99	24	20,3	cyclictest	1094676	-21	kworker/u16:1+flush-8:0	07:38:15	5
1115394	99	23	21,2	cyclictest	1790177	-21	kworker/u16:4+events_unbound	12:28:02	6
1115394	99	23	21,2	cyclictest	1790177	-21	kworker/u16:4+events_unbound	12:18:00	6
1115394	99	23	21,2	cyclictest	1531863	-21	kworker/u16:3+events_unbound	10:42:34	6
1115394	99	23	21,2	cyclictest	1516848	-21	kworker/u16:2+events_unbound	10:56:11	6
1115394	99	23	21,2	cyclictest	1408330	-21	kworker/u16:0+events_unbound	10:23:17	6
1115394	99	23	21,2	cyclictest	1304645	-21	kworker/u16:4+events_unbound	09:03:19	6
1115394	99	23	19,2	cyclictest	1516848	-21	kworker/u16:2+events_unbound	10:35:04	6
1115394	99	23	19,2	cyclictest	1516848	-21	kworker/u16:2+events_unbound	10:35:04	6
1115386	99	23	20,2	cyclictest	1215915	-21	kworker/u16:2+flush-8:0	08:03:16	4
1115386	99	23	19,3	cyclictest	1790177	-21	kworker/u16:4+flush-8:0	12:28:12	4
1115394	99	22	20,2	cyclictest	1726218	-21	kworker/u16:0+events_unbound	12:11:39	6
1115394	99	22	20,2	cyclictest	1726218	-21	kworker/u16:0+events_unbound	11:53:58	6
1115394	99	22	20,2	cyclictest	1531863	-21	kworker/u16:3+events_unbound	10:48:51	6
1115394	99	22	20,2	cyclictest	1304645	-21	kworker/u16:4+events_unbound	09:08:01	6
1115394	99	22	20,2	cyclictest	1304645	-21	kworker/u16:4+events_unbound	09:08:01	6
1115394	99	22	20,2	cyclictest	1215915	-21	kworker/u16:2+flush-8:0	08:07:45	6
1115394	99	22	20,2	cyclictest	1094676	-21	kworker/u16:1+events_unbound	09:24:59	6
1115394	99	21	19,2	cyclictest	1236464	-21	kworker/u16:3+flush-8:0	08:17:45	6
1115390	99	21	19,2	cyclictest	1094676	-21	kworker/u16:1+events_unbound	07:12:54	5
1115390	99	21	18,2	cyclictest	1531863	-21	kworker/u16:3+flush-8:0	10:38:12	5
1115394	99	20	18,2	cyclictest	1630571	-21	kworker/u16:1+events_unbound	11:28:00	6
1115394	99	20	18,2	cyclictest	1531863	-21	kworker/u16:3+events_unbound	10:31:51	6
1115394	99	20	18,2	cyclictest	1502304	-21	kworker/u16:1+events_unbound	10:21:18	6
1115394	99	20	18,2	cyclictest	1408330	-21	kworker/u16:0+events_unbound	10:12:28	6
1115394	99	20	18,2	cyclictest	1333128	-21	kworker/u16:3+events_unbound	09:53:19	6
1115395	99	19	0,18	cyclictest	1811461	-21	sh	12:18:11	7
1115394	99	19	17,2	cyclictest	1790177	-21	kworker/u16:4+events_unbound	12:17:31	6
1115394	99	19	17,2	cyclictest	1531863	-21	kworker/u16:3+events_unbound	10:46:28	6
1115390	99	19	17,2	cyclictest	1408330	-21	kworker/u16:0+flush-8:0	09:48:20	5
1115390	99	19	15,3	cyclictest	1094676	-21	kworker/u16:1+flush-8:0	07:33:15	5
1115386	99	19	17,2	cyclictest	1355573	-21	kworker/u16:2+events_unbound	09:29:52	4
1115395	99	18	0,16	cyclictest	0	-21	swapper/7	07:38:15	7
1115394	99	18	16,2	cyclictest	1741082	-21	kworker/u16:3+events_unbound	12:24:19	6
1115394	99	18	16,2	cyclictest	1617876	-21	kworker/u16:4+events_unbound	11:11:51	6
1115394	99	18	16,2	cyclictest	1408330	-21	kworker/u16:0+events_unbound	09:59:46	6
1115394	99	18	16,2	cyclictest	1355573	-21	kworker/u16:2+events_unbound	09:38:47	6
1115394	99	18	16,2	cyclictest	1275276	-21	kworker/u16:2+flush-8:0	08:41:00	6
1115394	99	18	16,2	cyclictest	1094676	-21	kworker/u16:1+events_unbound	09:22:32	6
1115390	99	18	17,1	cyclictest	1516848	-21	kworker/u16:2+events_unbound	10:58:12	5
1115390	99	18	16,2	cyclictest	1531863	-21	kworker/u16:3+flush-8:0	10:43:17	5
1115390	99	18	15,2	cyclictest	1408330	-21	kworker/u16:0+events_unbound	09:38:08	5
1115386	99	18	17,1	cyclictest	1617876	-21	kworker/u16:4+events_unbound	11:20:38	4
1115395	99	17	9,7	cyclictest	0	-21	swapper/7	11:48:10	7
1115395	99	17	8,8	cyclictest	0	-21	swapper/7	09:48:06	7
1115395	99	17	8,8	cyclictest	0	-21	swapper/7	09:28:13	7
1115395	99	17	7,8	cyclictest	0	-21	swapper/7	09:43:05	7
1115395	99	17	13,3	cyclictest	1267	-21	snmpd	12:25:39	7
1115395	99	17	13,3	cyclictest	1267	-21	snmpd	08:53:49	7
1115395	99	17	11,5	cyclictest	1716283	-21	latency_hist	11:42:49	7
1115394	99	17	15,2	cyclictest	1763415	-21	kworker/u16:1+events_unbound	12:06:46	6
1115394	99	17	15,2	cyclictest	1617876	-21	kworker/u16:4+events_unbound	11:34:27	6
1115394	99	17	15,2	cyclictest	1516848	-21	kworker/u16:2+events_unbound	11:38:59	6
1115394	99	17	15,2	cyclictest	1333128	-21	kworker/u16:3+events_unbound	10:07:06	6
1115394	99	17	15,2	cyclictest	1167666	-21	kworker/u16:2+events_unbound	07:33:16	6
1115394	99	17	15,2	cyclictest	1094676	-21	kworker/u16:1+events_unbound	09:35:03	6
1115386	99	17	0,1	cyclictest	0	-21	swapper/4	08:58:30	4
1115386	99	17	0,1	cyclictest	0	-21	swapper/4	08:26:45	4
1115386	99	17	0,1	cyclictest	0	-21	swapper/4	08:08:19	4
1115386	99	17	0,1	cyclictest	0	-21	swapper/4	07:51:56	4
1115386	99	17	0,1	cyclictest	0	-21	swapper/4	07:19:10	4
1115386	99	17	0,1	cyclictest	0	-21	swapper/4	07:09:57	4
1115395	99	16	7,7	cyclictest	0	-21	swapper/7	10:03:08	7
1115395	99	16	6,9	cyclictest	0	-21	swapper/7	10:08:07	7
1115395	99	16	6,9	cyclictest	0	-21	swapper/7	09:33:03	7
1115395	99	16	6,8	cyclictest	0	-21	swapper/7	10:58:01	7
1115395	99	16	13,2	cyclictest	1552854	-21	ssh	10:33:15	7
1115395	99	16	13,2	cyclictest	1552854	-21	ssh	10:33:15	7
1115395	99	16	13,2	cyclictest	0	-21	swapper/7	11:28:13	7
1115394	99	16	14,2	cyclictest	1726218	-21	kworker/u16:0+events_unbound	11:44:43	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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