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Default latency plot of system in rack #e, slot #6

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 rackeslot6.osadl.org (updated Wed May 06, 2026 00:44:50)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
579849	99	109	96,10	cyclictest	586458	-21	apt-get	19:30:00	0
579849	99	106	96,8	cyclictest	584864	-21	latency_hist	19:25:01	0
579849	99	105	98,5	cyclictest	680398	-21	kworker/u8:1+events_unbound	00:25:01	0
579854	99	101	91,8	cyclictest	1213033	-21	systemd-journal	00:40:00	1
579849	99	93	86,4	cyclictest	665063	-21	kworker/u8:1+flush-179:0	23:35:00	0
579849	99	93	86,4	cyclictest	665063	-21	kworker/u8:1+flush-179:0	23:34:59	0
579849	99	90	82,5	cyclictest	576783	-21	kworker/u8:2+events_unbound	19:35:14	0
579849	99	87	75,9	cyclictest	1213033	-21	systemd-journal	20:15:00	0
579849	99	86	79,5	cyclictest	678586	-21	kworker/u8:2+flush-179:0	00:20:01	0
579849	99	86	78,6	cyclictest	588303	-21	kworker/u8:0+events_unbound	19:45:26	0
579849	99	85	78,4	cyclictest	606374	-21	kworker/u8:3+flush-179:0	21:20:14	0
579849	99	85	78,4	cyclictest	606374	-21	kworker/u8:3+flush-179:0	21:20:14	0
579849	99	85	77,5	cyclictest	665063	-21	kworker/u8:1+flush-179:0	23:45:23	0
579854	99	83	63,18	cyclictest	678586	-21	kworker/u8:2+flush-179:0	00:15:01	1
579854	99	81	63,13	cyclictest	2096592	-21	cups-browsed	00:00:01	1
579849	99	81	73,5	cyclictest	648039	-21	kworker/u8:0+flush-179:0	23:40:15	0
579849	99	80	72,5	cyclictest	619061	-21	kworker/u8:1+events_unbound	21:45:24	0
579849	99	79	73,4	cyclictest	599991	-21	kworker/u8:0+events_unbound	20:30:24	0
579849	99	79	72,4	cyclictest	573676	-21	kworker/u8:0+flush-179:0	19:10:22	0
579849	99	78	72,4	cyclictest	635799	-21	kworker/u8:0+events_unbound	22:10:24	0
579849	99	78	69,7	cyclictest	625479	-21	kworker/u8:2+flush-179:0	21:55:15	0
579849	99	77	70,4	cyclictest	657587	-21	kworker/u8:2+events_unbound	23:25:14	0
579849	99	77	67,7	cyclictest	665063	-21	kworker/u8:1+flush-179:0	23:35:14	0
579849	99	77	66,8	cyclictest	595736	-21	kworker/u8:2+flush-179:0	20:00:19	0
579849	99	76	68,5	cyclictest	643458	-21	/usr/sbin/munin	22:25:25	0
579854	99	75	69,4	cyclictest	659366	-21	/usr/sbin/munin	23:15:23	1
579849	99	74	68,4	cyclictest	644852	-21	kworker/u8:3+flush-179:0	22:35:26	0
579849	99	74	66,5	cyclictest	667154	-21	kworker/u8:2+events_unbound	23:50:19	0
579854	99	73	64,7	cyclictest	643221	-21	latency_hist	22:25:01	1
579854	99	73	64,6	cyclictest	603175	-21	kworker/u8:2+flush-179:0	20:35:00	1
579849	99	73	67,5	cyclictest	584270	-21	kworker/u8:1+flush-179:0	19:30:25	0
579849	99	73	67,4	cyclictest	678001	-21	kworker/u8:0+flush-179:0	00:35:15	0
579849	99	73	67,4	cyclictest	651200	-21	kworker/u8:3+events_unbound	22:55:14	0
579849	99	72	65,6	cyclictest	588303	-21	kworker/u8:0+flush-179:0	19:40:13	0
579849	99	72	60,4	cyclictest	678001	-21	kworker/u8:0+events_unbound	00:25:24	0
579854	99	71	64,4	cyclictest	585119	-21	apt-get	19:25:12	1
579854	99	71	61,7	cyclictest	655957	-21	latency_hist	23:05:02	1
579849	99	71	65,4	cyclictest	619061	-21	kworker/u8:1+flush-179:0	21:50:18	0
579849	99	71	63,5	cyclictest	619061	-21	kworker/u8:1+events_unbound	21:40:16	0
579849	99	70	63,5	cyclictest	643208	-21	kworker/u8:2+events_unbound	22:40:19	0
579849	99	70	60,8	cyclictest	1213033	-21	systemd-journal	00:05:01	0
579849	99	69	62,5	cyclictest	619061	-21	kworker/u8:1+flush-179:0	21:35:24	0
579849	99	69	62,5	cyclictest	599991	-21	kworker/u8:0+events_unbound	20:10:02	0
579849	99	69	62,4	cyclictest	635799	-21	kworker/u8:0+flush-179:0	22:05:13	0
579854	99	68	54,11	cyclictest	630262	-21	kworker/u8:3+flush-179:0	22:00:21	1
579849	99	68	58,7	cyclictest	648039	-21	kworker/u8:0+events_unbound	23:00:15	0
579849	99	68	57,9	cyclictest	608163	-21	kworker/u8:1+flush-179:0	20:55:21	0
579859	99	67	0,65	cyclictest	0	-21	swapper/3	19:16:59	3
579854	99	67	60,5	cyclictest	611121	-21	latency_hist	20:45:01	1
579854	99	67	59,6	cyclictest	595736	-21	kworker/u8:2+flush-179:0	20:10:00	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2020-10-04 - 12:21