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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 Tue Dec 16, 2025 12:43:32)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2192956	2	61	0,0	sleep7	2192957	-21	uname	12:04:59	7
1614723	2	55	20,30	sleep7	0	-21	swapper/7	07:05:18	7
1615322	99	42	39,2	cyclictest	2239874	-21	kworker/u16:4+events_unbound	12:29:56	4
1615332	99	37	30,6	cyclictest	1735345	-21	latency_hist	08:09:43	7
1614878	2	37	27,7	sleep6	0	-21	swapper/6	07:07:25	6
1615327	99	35	32,2	cyclictest	2065130	-21	kworker/u16:4+flush-8:0	10:59:56	5
1615332	99	34	28,5	cyclictest	1686859	-21	latency_hist	07:44:43	7
1615322	99	34	31,2	cyclictest	2006642	-21	kworker/u16:2+events_unbound	11:04:43	4
1615322	99	33	31,2	cyclictest	1726017	-21	kworker/u16:2+events_unbound	08:29:45	4
1615000	2	33	21,9	sleep4	0	-21	swapper/4	07:09:08	4
1615322	99	32	31,1	cyclictest	1861527	-21	kworker/u16:0+flush-8:0	09:49:42	4
1614794	2	32	21,8	sleep5	0	-21	swapper/5	07:06:12	5
1615322	99	31	29,2	cyclictest	2152897	-21	kworker/u16:3+events_unbound	12:15:02	4
1615328	99	30	28,2	cyclictest	2006642	-21	kworker/u16:2+flush-8:0	10:40:12	6
1615328	99	29	27,2	cyclictest	2041656	-21	kworker/u16:0+events_unbound	11:02:54	6
1615327	99	29	27,2	cyclictest	2143207	-21	kworker/u16:1+flush-8:0	12:05:11	5
1615327	99	29	27,2	cyclictest	2025336	-21	kworker/u16:3+events_unbound	11:17:53	5
1615322	99	29	27,2	cyclictest	1948904	-21	kworker/u16:2+events_unbound	10:09:58	4
1947889	2	28	0,1	chrt	1939382	-21	/usr/sbin/munin	09:55:11	7
1615328	99	28	26,2	cyclictest	2216109	-21	kworker/u16:2+events_unbound	12:27:13	6
1615328	99	28	26,2	cyclictest	2025336	-21	kworker/u16:3+events_unbound	11:24:59	6
1615328	99	28	26,2	cyclictest	2025336	-21	kworker/u16:3+events_unbound	11:24:59	6
1615328	99	28	26,2	cyclictest	1821770	-21	kworker/u16:4+events_unbound	09:03:53	6
1615328	99	28	26,2	cyclictest	1821770	-21	kworker/u16:4+events_unbound	09:03:53	6
1615327	99	28	26,2	cyclictest	1657821	-21	kworker/u16:1+events_unbound	07:39:45	5
1615328	99	27	25,2	cyclictest	1975695	-21	kworker/u16:3+events_unbound	10:17:49	6
1615328	99	27	25,2	cyclictest	1850834	-21	kworker/u16:5+events_unbound	09:05:17	6
1615328	99	27	24,2	cyclictest	1881086	-21	kworker/u16:2+events_unbound	09:24:45	6
1615322	99	27	25,2	cyclictest	2041656	-21	kworker/u16:0+flush-8:0	10:49:37	4
1615322	99	27	25,2	cyclictest	2006642	-21	kworker/u16:2+flush-8:0	10:50:02	4
1615328	99	26	24,2	cyclictest	2239874	-21	kworker/u16:4+flush-8:0	12:39:42	6
1615328	99	26	24,2	cyclictest	2216109	-21	kworker/u16:2+events_unbound	12:31:53	6
1615328	99	26	24,2	cyclictest	2143207	-21	kworker/u16:1+events_unbound	12:07:13	6
1615328	99	26	24,2	cyclictest	2006642	-21	kworker/u16:2+events_unbound	11:59:05	6
1615327	99	26	24,2	cyclictest	2152897	-21	kworker/u16:3+events_unbound	12:01:53	5
1615327	99	26	24,2	cyclictest	1861527	-21	kworker/u16:0+events_unbound	09:53:53	5
1615327	99	26	24,2	cyclictest	1821770	-21	kworker/u16:4+events_unbound	10:24:30	5
1615327	99	26	24,2	cyclictest	1745291	-21	kworker/u16:3+events_unbound	08:29:06	5
1615327	99	26	24,2	cyclictest	1726017	-21	kworker/u16:2+events_unbound	08:15:54	5
1615327	99	26	23,2	cyclictest	1821770	-21	kworker/u16:4+flush-8:0	10:14:58	5
1615327	99	26	23,2	cyclictest	1764594	-21	kworker/u16:0+events_unbound	08:39:45	5
1615322	99	26	24,2	cyclictest	1915219	-21	kworker/u16:1+events_unbound	09:54:43	4
1615322	99	26	24,2	cyclictest	1821770	-21	kworker/u16:4+flush-8:0	09:10:06	4
1615328	99	25	23,2	cyclictest	2041656	-21	kworker/u16:0+events_unbound	11:08:57	6
1615328	99	25	23,2	cyclictest	2025336	-21	kworker/u16:3+events_unbound	10:50:53	6
1615328	99	25	23,2	cyclictest	1915219	-21	kworker/u16:1+events_unbound	09:53:33	6
1615328	99	25	23,2	cyclictest	1614293	-21	kworker/u16:0+events_unbound	07:10:01	6
1615327	99	25	24,1	cyclictest	2006642	-21	kworker/u16:2+events_unbound	11:19:56	5
1615327	99	25	23,2	cyclictest	2216109	-21	kworker/u16:2+events_unbound	12:25:53	5
1615327	99	25	23,2	cyclictest	1915219	-21	kworker/u16:1+events_unbound	10:11:34	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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