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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 Sat Sep 05, 2026 12:43:33)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1653924	2	64	0,1	sleep7	1653925	-21	kthreadcore	11:29:43	7
1063997	2	54	44,7	sleep5	0	-21	swapper/5	07:08:58	5
1770904	2	52	0,1	sleep5	0	-21	swapper/5	12:19:34	5
1063027	2	49	3,38	sleep7	0	-21	swapper/7	07:04:51	7
1064323	99	47	39,7	cyclictest	0	-21	swapper/7	11:49:22	7
1063866	2	47	37,7	sleep6	0	-21	swapper/6	07:07:07	6
1063804	2	43	27,9	sleep4	0	-21	swapper/4	07:06:17	4
1064323	99	41	39,1	cyclictest	170	50	irq/16-ehci_hcd:usb4	10:59:35	7
1064323	99	39	37,1	cyclictest	1520883	-21	ssh	10:34:54	7
1064323	99	39	36,2	cyclictest	1785663	-21	grep	12:24:38	7
1064313	99	38	34,3	cyclictest	1572890	-21	kworker/u16:2+events_unbound	11:06:38	4
1064323	99	37	36,0	cyclictest	0	-21	swapper/7	09:49:22	7
1064323	99	37	27,8	cyclictest	1526317	-21	kthreadcore	10:39:39	7
1064323	99	36	35,0	cyclictest	0	-21	swapper/7	12:31:54	7
1064323	99	35	34,0	cyclictest	0	-21	swapper/7	12:01:29	7
1064323	99	34	33,0	cyclictest	0	-21	swapper/7	10:15:10	7
1064323	99	34	32,1	cyclictest	0	-21	swapper/7	08:09:38	7
1064323	99	34	31,1	cyclictest	1621687	-21	ssh	11:18:15	7
1064323	99	34	28,5	cyclictest	1819434	-21	latency_hist	12:39:20	7
1064323	99	33	32,0	cyclictest	0	-21	swapper/7	12:16:31	7
1064323	99	33	31,1	cyclictest	0	-21	swapper/7	09:35:10	7
1064323	99	32	30,1	cyclictest	1684401	-21	ssh	11:44:30	7
1064323	99	32	30,1	cyclictest	0	-21	swapper/7	11:38:07	7
1064323	99	32	29,2	cyclictest	1676449	-21	ps	11:39:41	7
1064323	99	32	29,2	cyclictest	1458694	-21	ntpq	10:09:50	7
1064323	99	32	29,2	cyclictest	1335493	-21	sensors	09:19:50	7
1064323	99	31	30,0	cyclictest	0	-21	swapper/7	09:04:35	7
1064323	99	31	29,1	cyclictest	1634629	-21	ssh	11:24:19	7
1064323	99	31	29,1	cyclictest	1343432	-21	ssh	09:24:42	7
1064323	99	31	29,1	cyclictest	0	-21	swapper/7	12:21:03	7
1357678	2	30	0,1	chrt	0	-21	swapper/6	09:29:45	6
1064323	99	30	29,0	cyclictest	0	-21	swapper/7	10:03:30	7
1064323	99	30	29,0	cyclictest	0	-21	swapper/7	09:39:22	7
1064323	99	30	27,2	cyclictest	170	50	irq/16-ehci_hcd:usb4	10:56:30	7
1064323	99	28	26,1	cyclictest	0	-21	swapper/7	12:07:30	7
1064323	99	27	26,0	cyclictest	0	-21	swapper/7	11:24:50	7
1064323	99	27	26,0	cyclictest	0	-21	swapper/7	11:24:50	7
1064313	99	27	25,2	cyclictest	1097533	-21	kworker/u16:2+events_unbound	08:04:47	4
1064313	99	26	24,2	cyclictest	1054366	-21	kworker/u16:3+events_unbound	08:29:36	4
1064323	99	25	23,1	cyclictest	0	-21	swapper/7	11:07:17	7
1064323	99	25	19,1	cyclictest	0	-21	swapper/7	10:33:42	7
1064313	99	25	23,2	cyclictest	1087672	-21	kworker/u16:1+events_unbound	07:19:34	4
1064323	99	24	23,0	cyclictest	0	-21	swapper/7	10:04:58	7
1064323	99	24	22,1	cyclictest	0	-21	swapper/7	07:19:40	7
1064323	99	24	21,2	cyclictest	1486094	-21	sh	10:23:34	7
1064313	99	24	22,2	cyclictest	1054366	-21	kworker/u16:3+flush-8:0	08:39:35	4
1279470	2	23	0,0	chrt	0	-21	swapper/5	08:54:42	5
1064323	99	23	22,0	cyclictest	0	-21	swapper/7	10:26:34	7
1064323	99	23	22,0	cyclictest	0	-21	swapper/7	09:09:30	7
1064313	99	23	21,2	cyclictest	1324990	-21	kworker/u16:1+flush-8:0	10:04:15	4
1064313	99	23	21,2	cyclictest	1301061	-21	kworker/u16:5+events_unbound	09:11:47	4
1064313	99	23	21,2	cyclictest	1097534	-21	kworker/u16:4+events_unbound	07:44:51	4
1746432	2	22	0,1	chrt	1746433	-21	/usr/sbin/munin	12:09:35	7
1064323	99	22	18,3	cyclictest	1610021	-21	idleruntime-cro	11:14:20	7
1064323	99	22	16,5	cyclictest	1233295	-21	latency_hist	08:34:20	7
1064313	99	22	20,2	cyclictest	1348319	-21	kworker/u16:2+events_unbound	10:10:01	4
1064313	99	22	20,2	cyclictest	1159955	-21	kworker/u16:5+events_unbound	07:59:50	4
1064313	99	22	20,2	cyclictest	1054366	-21	kworker/u16:3+events_unbound	08:24:35	4
1064313	99	22	20,2	cyclictest	1054366	-21	kworker/u16:3+events_unbound	07:30:00	4
1064323	99	21	16,1	cyclictest	0	-21	swapper/7	09:32:43	7
1064313	99	21	19,2	cyclictest	1696382	-21	kworker/u16:4+flush-8:0	11:54:15	4
1064313	99	21	19,2	cyclictest	1672010	-21	kworker/u16:0+events_unbound	11:59:57	4
1064313	99	21	19,2	cyclictest	1646971	-21	kworker/u16:2+flush-8:0	11:31:15	4
1064313	99	21	19,2	cyclictest	1595067	-21	kworker/u16:1+events_unbound	11:19:43	4
1064313	99	21	19,2	cyclictest	1324990	-21	kworker/u16:1+events_unbound	09:49:43	4
1064323	99	20	16,3	cyclictest	0	-21	swapper/7	07:44:31	7
1064313	99	20	18,2	cyclictest	1745550	-21	kworker/u16:1+events_unbound	12:14:19	4
1064313	99	20	18,2	cyclictest	1596087	-21	kworker/u16:5+flush-8:0	11:39:06	4
1064313	99	20	18,2	cyclictest	1596087	-21	kworker/u16:5+flush-8:0	11:29:14	4
1064313	99	20	18,2	cyclictest	1596087	-21	kworker/u16:5+flush-8:0	11:29:14	4
1064313	99	20	18,2	cyclictest	1010090	-21	kworker/u16:4+events_unbound	07:09:50	4
1064313	99	20	18,2	cyclictest	1010090	-21	kworker/u16:4+events_unbound	07:09:50	4
1064323	99	19	17,1	cyclictest	170	50	irq/16-ehci_hcd:usb4	10:50:46	7
1064323	99	19	17,1	cyclictest	0	-21	swapper/7	09:46:38	7
1064323	99	19	16,2	cyclictest	1277	-21	snmpd	11:58:34	7
1064323	99	19	10,8	cyclictest	1413759	-21	ssh	09:54:37	7
1064318	99	19	0,14	cyclictest	0	-21	swapper/6	11:37:26	6
1064313	99	19	17,2	cyclictest	1498327	-21	kworker/u16:4+events_unbound	10:46:18	4
1064313	99	19	17,2	cyclictest	1498327	-21	kworker/u16:4+events_unbound	10:46:18	4
1064313	99	19	17,2	cyclictest	1412228	-21	kworker/u16:3+events_unbound	09:57:38	4
1064323	99	18	17,0	cyclictest	0	-21	swapper/7	07:29:49	7
1064323	99	18	10,7	cyclictest	0	-21	swapper/7	07:09:36	7
1064323	99	18	10,7	cyclictest	0	-21	swapper/7	07:09:36	7
1064313	99	18	16,2	cyclictest	1724798	-21	kworker/u16:2+events_unbound	12:18:25	4
1064313	99	18	16,2	cyclictest	1696382	-21	kworker/u16:4+events_unbound	12:08:15	4
1064313	99	18	16,2	cyclictest	1672010	-21	kworker/u16:0+flush-8:0	12:29:30	4
1064313	99	18	16,2	cyclictest	1595067	-21	kworker/u16:1+events_unbound	11:17:07	4
1064313	99	18	16,2	cyclictest	1595067	-21	kworker/u16:1+events_unbound	11:10:20	4
1064313	99	18	16,2	cyclictest	1449575	-21	kworker/u16:0+events_unbound	10:26:10	4
1064313	99	18	16,2	cyclictest	1449575	-21	kworker/u16:0+events_unbound	10:17:38	4
1064313	99	18	16,2	cyclictest	1412228	-21	kworker/u16:3+events_unbound	10:20:30	4
1064313	99	18	16,2	cyclictest	1339814	-21	kworker/u16:0+events_unbound	09:42:26	4
1064313	99	18	16,2	cyclictest	1324990	-21	kworker/u16:1+events_unbound	09:49:04	4
1064323	99	17	16,0	cyclictest	0	-21	swapper/7	08:24:47	7
1064323	99	17	10,6	cyclictest	0	-21	swapper/7	08:14:47	7
1064318	99	17	15,2	cyclictest	1696382	-21	kworker/u16:4+flush-8:0	12:34:25	6
1064313	99	17	15,2	cyclictest	1672010	-21	kworker/u16:0+flush-8:0	11:44:33	4
1064313	99	17	15,2	cyclictest	1557447	-21	kworker/u16:3+events_unbound	11:03:10	4
1064313	99	17	15,2	cyclictest	1498327	-21	kworker/u16:4+events_unbound	10:31:23	4
1064313	99	17	15,2	cyclictest	1449575	-21	kworker/u16:0+events_unbound	10:52:35	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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