OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #4

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8
Special All - All RT - Optimization - Ethernet - Thumbnails - Next

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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rackeslot4s.osadl.org (updated Thu Apr 23, 2026 00:44:07)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
115495	99	53	46,5	cyclictest	302814	-21	cp	22:10:00	0
115505	99	46	40,4	cyclictest	252	-21	systemd-journal	20:45:15	3
115499	99	46	43,2	cyclictest	308525	-21	kworker/u8:1+events_unbound	22:20:15	1
115505	99	42	36,4	cyclictest	349717	-21	cat	22:55:01	3
115501	99	42	38,3	cyclictest	225571	-21	kworker/u8:4+flush-259:0	21:00:01	2
115501	99	40	32,3	cyclictest	127217	-21	kworker/u8:1+events_unbound	19:55:23	2
115495	99	40	36,3	cyclictest	224921	-21	apt-get	20:55:00	0
115501	99	39	33,4	cyclictest	252	-21	systemd-journal	22:25:15	2
115495	99	39	35,3	cyclictest	334312	-21	kworker/u8:0+flush-259:0	23:00:15	0
115501	99	38	35,2	cyclictest	127217	-21	kworker/u8:1+events_unbound	21:15:25	2
115501	99	38	32,4	cyclictest	308525	-21	kworker/u8:1+events_unbound	22:40:01	2
115501	99	38	32,4	cyclictest	245996	-21	latency_hist	21:15:00	2
115499	99	38	34,3	cyclictest	78370	-21	kworker/u8:0+flush-259:0	19:10:13	1
115495	99	37	32,4	cyclictest	172053	-21	ntpq	20:00:23	0
115501	99	36	33,2	cyclictest	127217	-21	kworker/u8:1+flush-259:0	20:50:17	2
115499	99	36	32,3	cyclictest	438346	-21	apt-get	00:20:11	1
115499	99	36	32,3	cyclictest	225571	-21	kworker/u8:4+events_unbound	20:55:19	1
115495	99	36	33,2	cyclictest	448405	-21	kworker/u8:0+flush-259:0	00:35:19	0
115501	99	35	30,3	cyclictest	308525	-21	kworker/u8:1+events_unbound	23:15:17	2
115501	99	34	31,2	cyclictest	432931	-21	kworker/u8:3+flush-259:0	00:25:21	2
115501	99	34	30,3	cyclictest	302712	-21	apt-get	22:10:02	2
115501	99	34	28,4	cyclictest	67877	-21	kworker/u8:3+flush-259:0	19:20:15	2
115499	99	34	31,2	cyclictest	127217	-21	kworker/u8:1+flush-259:0	20:10:24	1
115495	99	34	29,3	cyclictest	241093	-21	apt-get	21:10:12	0
115501	99	33	29,2	cyclictest	127217	-21	kworker/u8:1+events_unbound	21:05:16	2
115501	99	32	29,2	cyclictest	67877	-21	kworker/u8:3+events_unbound	19:25:22	2
115501	99	32	28,3	cyclictest	250592	-21	kworker/u8:0+events_unbound	21:20:16	2
115501	99	32	27,3	cyclictest	199364	-21	/usr/sbin/munin	20:30:23	2
115495	99	32	1,30	cyclictest	1	-21	systemd	20:10:32	0
115501	99	31	26,4	cyclictest	334312	-21	kworker/u8:0+flush-259:0	23:05:17	2
115499	99	31	26,3	cyclictest	252	-21	systemd-journal	21:05:17	1
115501	99	30	27,2	cyclictest	78370	-21	kworker/u8:0+flush-259:0	19:10:20	2
115501	99	30	27,2	cyclictest	432931	-21	kworker/u8:3+flush-259:0	00:30:18	2
115501	99	30	27,2	cyclictest	136518	-21	kworker/u8:0+events_unbound	20:25:20	2
115501	99	30	26,3	cyclictest	432931	-21	kworker/u8:3+flush-259:0	00:15:20	2
115501	99	30	26,3	cyclictest	127217	-21	kworker/u8:1+flush-259:0	20:10:21	2
115501	99	30	24,4	cyclictest	127217	-21	kworker/u8:1+events_unbound	19:40:23	2
115499	99	30	26,3	cyclictest	308525	-21	kworker/u8:1+flush-259:0	23:55:00	1
115505	99	29	23,4	cyclictest	509	-21	rs:main		3
115501	99	29	25,3	cyclictest	411799	-21	kworker/u8:2+flush-259:0	00:00:25	2
115499	99	29	25,3	cyclictest	417564	-21	base64	00:00:00	1
115499	99	29	25,3	cyclictest	411799	-21	kworker/u8:2+flush-259:0	00:15:00	1
115495	99	29	26,2	cyclictest	127217	-21	kworker/u8:1+flush-259:0	19:55:21	0
115505	99	28	22,4	cyclictest	204312	-21	latency_hist	20:35:00	3
115501	99	28	24,3	cyclictest	411799	-21	kworker/u8:2+flush-259:0	00:05:25	2
115501	99	28	24,3	cyclictest	411799	-21	kworker/u8:2+flush-259:0	00:05:24	2
115501	99	28	22,4	cyclictest	252	-21	systemd-journal	20:44:14	2
115499	99	28	25,2	cyclictest	308525	-21	kworker/u8:1+flush-259:0	22:30:25	1
115499	99	28	25,2	cyclictest	136518	-21	kworker/u8:0+flush-259:0	20:10:01	1
115499	99	28	24,3	cyclictest	142376	-21	apt-get	19:35:12	1
115499	99	28	22,4	cyclictest	344385	-21	latency_hist	22:50:01	1
115495	99	28	25,2	cyclictest	127217	-21	kworker/u8:1+flush-259:0	20:20:01	0
115495	99	28	24,3	cyclictest	308525	-21	kworker/u8:1+flush-259:0	00:00:00	0
115495	99	28	24,3	cyclictest	308525	-21	kworker/u8:1+flush-259:0	00:00:00	0
115495	99	28	21,5	cyclictest	318624	-21	latency_hist	22:25:01	0
115495	99	28	0,27	cyclictest	509	-21	rs:main		0
115505	99	27	21,4	cyclictest	225571	-21	kworker/u8:4+flush-259:0	21:25:16	3
115501	99	27	23,3	cyclictest	334312	-21	kworker/u8:0+flush-259:0	23:45:15	2
115501	99	27	23,3	cyclictest	308525	-21	kworker/u8:1+events_unbound	23:40:17	2
115495	99	27	20,5	cyclictest	421718	-21	ntpq	00:00:23	0
115501	99	26	22,3	cyclictest	334312	-21	kworker/u8:0+events_unbound	23:00:16	2
115501	99	26	21,3	cyclictest	252	-21	systemd-journal	21:50:57	2
115501	99	26	21,3	cyclictest	252	-21	systemd-journal	21:50:57	2
115495	99	26	22,3	cyclictest	136518	-21	kworker/u8:0+events_unbound	20:30:01	0
115505	99	25	20,4	cyclictest	252	-21	systemd-journal	23:10:00	3
115505	99	25	19,4	cyclictest	448377	-21	latency_hist	00:30:00	3
115501	99	25	21,3	cyclictest	344405	-21	kworker/u8:2+flush-259:0	22:55:16	2
115501	99	25	21,3	cyclictest	297779	-21	kworker/u8:0+events_unbound	22:19:17	2
115501	99	25	21,3	cyclictest	272042	-21	kworker/u8:2+flush-259:0	22:00:21	2
115499	99	25	21,3	cyclictest	78370	-21	kworker/u8:0+flush-259:0	19:15:23	1
115499	99	25	21,3	cyclictest	78370	-21	kworker/u8:0+flush-259:0	19:15:22	1
115501	99	24	21,2	cyclictest	308525	-21	kworker/u8:1+events_unbound	23:20:15	2
115501	99	24	21,2	cyclictest	127217	-21	kworker/u8:1+events_unbound	20:00:12	2
115501	99	24	20,3	cyclictest	386269	-21	apt-get	23:30:12	2
115501	99	24	20,3	cyclictest	344405	-21	kworker/u8:2+events_unbound	22:50:17	2
115501	99	24	18,4	cyclictest	126071	-21	cat	19:20:01	2
115501	99	24	18,4	cyclictest	126071	-21	cat	19:20:01	2
115501	99	24	16,5	cyclictest	328940	-21	latency_hist	22:35:01	2
115499	99	24	20,3	cyclictest	127217	-21	kworker/u8:1+flush-259:0	21:00:17	1
115495	99	24	19,4	cyclictest	390329	-21	ntpq	23:30:23	0
115501	99	23	20,2	cyclictest	334312	-21	kworker/u8:0+events_unbound	23:25:12	2
115501	99	23	20,2	cyclictest	199356	-21	kworker/u8:3+flush-259:0	20:35:21	2
115501	99	23	19,3	cyclictest	199356	-21	kworker/u8:3+flush-259:0	21:30:15	2
115501	99	23	17,4	cyclictest	147244	-21	latency_hist	19:40:01	2
115495	99	23	20,2	cyclictest	287503	-21	kworker/u8:3+flush-259:0	22:05:00	0
115505	99	22	18,3	cyclictest	78370	-21	kworker/u8:0+flush-259:0	19:10:10	3
115505	99	22	18,3	cyclictest	183499	-21	apt-get	20:15:10	3
115505	99	22	16,4	cyclictest	422549	-21	latency_hist	00:05:01	3
115499	99	22	18,3	cyclictest	334312	-21	kworker/u8:0+flush-259:0	23:05:16	1
115499	99	22	18,3	cyclictest	199266	-21	gpgv	20:30:01	1
115499	99	22	18,3	cyclictest	157814	-21	apt-get	19:50:12	1
115499	99	22	16,4	cyclictest	224921	-21	apt-get	20:55:01	1
115505	99	21	18,2	cyclictest	509	-21	rs:main		3
115505	99	21	17,3	cyclictest	193587	-21	kworker/u8:2+flush-259:0	20:50:15	3
115501	99	21	18,2	cyclictest	308525	-21	kworker/u8:1+flush-259:0	23:50:24	2
115501	99	21	18,2	cyclictest	199356	-21	kworker/u8:3+events_unbound	21:35:15	2
115505	99	20	15,4	cyclictest	416639	-21	journal-offline	23:56:15	3
115505	99	20	15,4	cyclictest	416639	-21	journal-offline	23:56:15	3
115505	99	20	14,4	cyclictest	252	-21	systemd-journal	22:04:15	3
115501	99	20	12,6	cyclictest	343525	-21	ntpq	22:45:21	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2021-09-01 - 00:34