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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 Thu May 14, 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
1764808	99	116	109,5	cyclictest	1858704	-21	kworker/u8:3+events_unbound	00:00:14	0
1764808	99	107	96,9	cyclictest	1771114	-21	apt-get	19:30:04	0
1764811	99	105	95,4	cyclictest	1832849	-21	kworker/u8:0+events_unbound	22:40:01	1
1764811	99	104	92,9	cyclictest	1820147	-21	latency_hist	22:00:01	1
1764811	99	102	95,5	cyclictest	1776386	-21	kworker/u8:2+events_unbound	19:45:03	1
1764808	99	100	90,7	cyclictest	1791236	-21	latency_hist	20:30:02	0
1764808	99	96	79,7	cyclictest	1814817	-21	kworker/u8:3+events_unbound	22:35:24	0
1764808	99	95	87,6	cyclictest	1774526	-21	kworker/u8:0+events_unbound	19:40:02	0
1764811	99	94	81,5	cyclictest	1840812	-21	kworker/u8:0+events_unbound	23:15:01	1
1764808	99	94	86,6	cyclictest	1763254	-21	kworker/u8:3+events_unbound	19:15:01	0
1764808	99	94	81,4	cyclictest	1778288	-21	kworker/u8:0+events_unbound	20:05:25	0
1764808	99	94	81,4	cyclictest	1778288	-21	kworker/u8:0+events_unbound	20:05:25	0
1764811	99	93	81,4	cyclictest	1847235	-21	kworker/u8:1+events_unbound	00:10:03	1
1764808	99	93	86,4	cyclictest	1783012	-21	kworker/u8:2+events_unbound	20:10:02	0
1764808	99	92	88,3	cyclictest	1847235	-21	kworker/u8:1+events_unbound	23:40:23	0
1764808	99	92	81,8	cyclictest	1823322	-21	latency_hist	22:10:02	0
1764811	99	90	86,3	cyclictest	1865381	-21	kworker/u8:3+flush-179:0	00:30:25	1
1764811	99	90	82,6	cyclictest	1813559	-21	http	21:40:00	1
1764811	99	90	76,5	cyclictest	587478	-21	kworker/u8:1+events_unbound	19:30:14	1
1764808	99	90	86,3	cyclictest	1800759	-21	kworker/u8:1+flush-179:0	21:00:24	0
1764811	99	88	83,4	cyclictest	1778288	-21	kworker/u8:0+events_unbound	20:15:28	1
1764811	99	88	78,7	cyclictest	1840834	-21	latency_hist	23:05:01	1
1764808	99	88	78,7	cyclictest	1213033	-21	systemd-journal	20:35:00	0
1764808	99	88	78,7	cyclictest	1213033	-21	systemd-journal	20:34:59	0
1764811	99	87	78,6	cyclictest	1779829	-21	latency_hist	19:55:01	1
1764808	99	87	75,4	cyclictest	1847235	-21	kworker/u8:1+events_unbound	00:10:23	0
1764811	99	86	79,5	cyclictest	1800759	-21	kworker/u8:1+events_unbound	21:05:24	1
1764811	99	86	78,6	cyclictest	1847252	-21	latency_hist	23:25:00	1
1764808	99	86	75,5	cyclictest	1807179	-21	kworker/u8:2+events_unbound	21:35:17	0
1764811	99	85	79,5	cyclictest	587478	-21	kworker/u8:1+events_unbound	19:20:23	1
1764808	99	85	69,5	cyclictest	1814817	-21	kworker/u8:3+events_unbound	22:00:17	0
1764808	99	84	77,5	cyclictest	1847235	-21	kworker/u8:1+events_unbound	00:05:19	0
1764808	99	84	74,4	cyclictest	1845568	-21	kworker/u8:2+events_unbound	23:30:20	0
1764808	99	84	69,5	cyclictest	1850415	-21	kworker/u8:3+events_unbound	23:45:17	0
1764808	99	84	66,6	cyclictest	1862403	-21	kworker/u8:0+events_unbound	00:25:20	0
1764811	99	83	79,3	cyclictest	1821773	-21	kworker/u8:0+flush-179:0	22:10:23	1
1764808	99	83	74,4	cyclictest	1847235	-21	kworker/u8:1+events_unbound	23:40:01	0
1764811	99	82	78,3	cyclictest	1813484	-21	kworker/u8:1+events_unbound	21:40:14	1
1764808	99	82	77,4	cyclictest	1778288	-21	kworker/u8:0+flush-179:0	20:00:25	0
1764808	99	80	74,5	cyclictest	1763254	-21	kworker/u8:3+events_unbound	19:25:18	0
1764811	99	79	74,4	cyclictest	1862403	-21	kworker/u8:0+flush-179:0	00:25:00	1
1764811	99	79	70,6	cyclictest	1857048	-21	latency_hist	23:55:01	1
1764811	99	78	73,4	cyclictest	1792805	-21	kworker/u8:2+flush-179:0	20:45:25	1
1764811	99	78	73,4	cyclictest	1788018	-21	kworker/u8:3+events_unbound	20:20:24	1
1764811	99	78	72,4	cyclictest	1792805	-21	kworker/u8:2+events_unbound	20:40:14	1
1764811	99	78	61,15	cyclictest	1774526	-21	kworker/u8:0+flush-179:0	19:40:14	1
1764808	99	78	73,4	cyclictest	1832849	-21	kworker/u8:0+flush-179:0	22:55:24	0
1764808	99	78	71,5	cyclictest	1789650	-21	latency_hist	20:25:01	0
1764808	99	78	69,7	cyclictest	1213033	-21	systemd-journal	22:20:00	0
1764808	99	78	65,5	cyclictest	1850415	-21	kworker/u8:3+events_unbound	23:50:22	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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