OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #e, slot #8

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: reduced

Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 50 highest latencies:

System rackeslot8.osadl.org (updated Mon Dec 04, 2023 00:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
674607	99	60	55,4	cyclictest	958159	-21	kworker/u8:3+events_unbound	00:13:09	3
674605	99	58	54,3	cyclictest	930347	-21	kworker/u8:2+flush-8:0	00:30:40	2
674600	99	56	50,4	cyclictest	674440	-21	kworker/u8:1+flush-8:0	19:15:02	0
674605	99	53	49,3	cyclictest	704320	-21	kworker/u8:3+flush-8:0	19:45:32	2
674605	99	52	48,3	cyclictest	770229	-21	kworker/u8:2+events_unbound	23:00:32	2
674605	99	50	46,3	cyclictest	731841	-21	kworker/u8:1+events_unbound	21:05:29	2
674605	99	49	46,2	cyclictest	770229	-21	kworker/u8:2+flush-8:0	22:30:34	2
674605	99	47	43,3	cyclictest	731841	-21	kworker/u8:1+events_unbound	20:20:29	2
674605	99	45	42,2	cyclictest	930347	-21	kworker/u8:2+events_unbound	00:13:11	2
674605	99	45	41,3	cyclictest	853021	-21	kworker/u8:0+flush-8:0	22:25:30	2
674602	99	45	42,2	cyclictest	930347	-21	kworker/u8:2+flush-8:0	23:55:01	1
674602	99	45	41,3	cyclictest	626750	-21	kworker/u8:0+flush-8:0	19:40:31	1
674607	99	44	39,3	cyclictest	674440	-21	kworker/u8:1+flush-8:0	19:30:00	3
674605	99	44	40,3	cyclictest	770229	-21	kworker/u8:2+flush-8:0	22:40:00	2
674605	99	44	40,3	cyclictest	626750	-21	kworker/u8:0+flush-8:0	20:15:01	2
674605	99	43	41,1	cyclictest	674440	-21	kworker/u8:1+events_unbound	19:15:31	2
674605	99	43	40,2	cyclictest	930347	-21	kworker/u8:2+events_unbound	00:25:21	2
674605	99	43	40,2	cyclictest	881118	-21	kworker/u8:0+flush-8:0	23:10:23	2
674602	99	43	39,3	cyclictest	704320	-21	kworker/u8:3+flush-8:0	19:35:33	1
674600	99	43	35,5	cyclictest	797478	-21	apt-get	21:00:21	0
674605	99	42	39,2	cyclictest	881118	-21	kworker/u8:0+flush-8:0	23:25:24	2
674602	99	42	40,2	cyclictest	770229	-21	kworker/u8:2+flush-8:0	23:20:01	1
674602	99	42	40,2	cyclictest	770229	-21	kworker/u8:2+flush-8:0	23:20:00	1
674602	99	41	38,2	cyclictest	881118	-21	kworker/u8:0+flush-8:0	22:54:59	1
674607	99	40	35,3	cyclictest	704320	-21	kworker/u8:3+flush-8:0	19:55:31	3
674607	99	40	34,4	cyclictest	4170283	-21	systemd-journal	21:15:00	3
674605	99	40	37,2	cyclictest	653076	-21	kworker/u8:2+events_unbound	19:25:26	2
674605	99	40	35,3	cyclictest	958141	-40	mandb	00:00:01	2
674605	99	39	36,2	cyclictest	964062	-21	kworker/u8:1+events_unbound	00:15:23	2
674605	99	39	36,2	cyclictest	770229	-21	kworker/u8:2+flush-8:0	21:15:19	2
674605	99	39	36,2	cyclictest	704320	-21	kworker/u8:3+flush-8:0	20:00:34	2
674605	99	39	36,2	cyclictest	653076	-21	kworker/u8:2+events_unbound	19:20:29	2
674600	99	39	34,3	cyclictest	813482	-21	kworker/u8:1+flush-8:0	22:00:01	0
674607	99	38	32,4	cyclictest	780917	-21	latency_hist	20:45:00	3
674605	99	38	35,2	cyclictest	881118	-21	kworker/u8:0+events_unbound	22:55:31	2
674605	99	38	34,3	cyclictest	770229	-21	kworker/u8:2+flush-8:0	23:20:33	2
674605	99	38	34,3	cyclictest	770229	-21	kworker/u8:2+flush-8:0	23:20:32	2
674605	99	38	34,3	cyclictest	770229	-21	kworker/u8:2+flush-8:0	22:44:59	2
674602	99	38	35,2	cyclictest	881118	-21	kworker/u8:0+flush-8:0	00:10:01	1
674602	99	38	34,3	cyclictest	770229	-21	kworker/u8:2+flush-8:0	22:30:01	1
674602	99	38	33,3	cyclictest	770229	-21	kworker/u8:2+flush-8:0	20:40:24	1
674600	99	38	31,4	cyclictest	881411	-21	apt-get	22:40:24	0
674605	99	37	35,2	cyclictest	930347	-21	kworker/u8:2+events_unbound	00:05:22	2
674605	99	37	34,2	cyclictest	881118	-21	kworker/u8:0+flush-8:0	23:15:41	2
674605	99	37	34,2	cyclictest	881118	-21	kworker/u8:0+flush-8:0	23:15:41	2
674605	99	37	34,2	cyclictest	770229	-21	kworker/u8:2+flush-8:0	22:50:21	2
674605	99	37	34,2	cyclictest	770229	-21	kworker/u8:2+flush-8:0	21:45:00	2
674605	99	37	34,2	cyclictest	731841	-21	kworker/u8:1+flush-8:0	20:30:29	2
674605	99	37	33,3	cyclictest	881118	-21	kworker/u8:0+flush-8:0	23:50:28	2
674602	99	37	33,3	cyclictest	930347	-21	kworker/u8:2+events_unbound	00:30:24	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2022-03-28 - 20:20