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 Mon Jun 29, 2026 00:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
667079	99	48	44,3	cyclictest	765937	-21	gpgv	20:45:01	3
667074	99	46	43,2	cyclictest	677346	-21	kworker/u8:2+events_unbound	19:45:15	0
667079	99	45	40,3	cyclictest	854629	-21	latency_hist	22:10:00	3
667074	99	42	37,4	cyclictest	911702	-21	kworker/u8:0+events_unbound	23:40:24	0
667078	99	39	34,3	cyclictest	807637	-21	/usr/sbin/munin	21:25:15	2
667078	99	38	32,4	cyclictest	745180	-21	latency_hist	20:25:01	2
667078	99	38	31,5	cyclictest	335557	-21	systemd-journal	22:09:39	2
667074	99	38	35,2	cyclictest	797359	-21	kworker/u8:2+events_unbound	21:15:15	0
667074	99	38	34,3	cyclictest	963504	-21	kworker/u8:3+events_unbound	00:33:34	0
667074	99	38	34,3	cyclictest	667287	-21	kworker/u8:1+events_unbound	19:15:21	0
667074	99	38	32,4	cyclictest	729576	-21	apt-get	20:10:12	0
667074	99	37	34,2	cyclictest	932751	-21	kworker/u8:2+events_unbound	00:35:24	0
667074	99	37	33,3	cyclictest	890640	-21	kworker/u8:2+events_unbound	23:11:40	0
667074	99	37	33,3	cyclictest	843953	-21	kworker/u8:0+events_unbound	22:30:17	0
667074	99	37	33,3	cyclictest	771445	-21	kworker/u8:0+events_unbound	20:55:22	0
667074	99	37	33,3	cyclictest	739625	-21	kworker/u8:2+events_unbound	20:53:39	0
667074	99	36	33,2	cyclictest	932751	-21	kworker/u8:2+events_unbound	23:59:39	0
667074	99	36	33,2	cyclictest	843953	-21	kworker/u8:0+events_unbound	22:50:20	0
667074	99	36	33,2	cyclictest	771445	-21	kworker/u8:0+events_unbound	21:08:40	0
667074	99	36	33,2	cyclictest	677346	-21	kworker/u8:2+events_unbound	19:40:22	0
667074	99	36	32,3	cyclictest	807628	-21	kworker/u8:4+events_unbound	21:36:42	0
667074	99	36	32,3	cyclictest	807628	-21	kworker/u8:4+events_unbound	21:27:55	0
667079	99	35	32,2	cyclictest	713899	-21	kworker/u8:3+events_unbound	20:25:26	3
667075	99	35	32,2	cyclictest	932751	-21	kworker/u8:2+events_unbound	00:04:37	1
667074	99	35	32,2	cyclictest	713899	-21	kworker/u8:3+events_unbound	20:30:20	0
667074	99	35	32,2	cyclictest	713899	-21	kworker/u8:3+events_unbound	20:25:24	0
667074	99	35	31,3	cyclictest	880362	-21	kworker/u8:1+events_unbound	23:07:41	0
667074	99	34	31,2	cyclictest	843953	-21	kworker/u8:0+events_unbound	22:10:13	0
667074	99	34	30,3	cyclictest	677346	-21	kworker/u8:2+events_unbound	19:33:40	0
667079	99	33	29,3	cyclictest	911702	-21	kworker/u8:0+flush-259:0	23:49:59	3
667079	99	33	25,6	cyclictest	776563	-21	latency_hist	20:55:01	3
667075	99	33	30,2	cyclictest	921999	-21	apt-get	23:15:01	1
667074	99	33	30,2	cyclictest	932751	-21	kworker/u8:2+events_unbound	00:05:26	0
667074	99	33	30,2	cyclictest	880362	-21	kworker/u8:1+events_unbound	23:35:27	0
667074	99	33	30,2	cyclictest	880362	-21	kworker/u8:1+events_unbound	22:45:24	0
667074	99	33	30,2	cyclictest	729540	-21	kworker/u8:1+events_unbound	21:10:15	0
667078	99	32	24,6	cyclictest	890616	-21	latency_hist	22:45:00	2
667074	99	32	29,3	cyclictest	968800	-21	kworker/u8:4+events_unbound	00:01:41	0
667074	99	32	29,2	cyclictest	792007	-21	kworker/u8:3+events_unbound	21:45:23	0
667074	99	32	29,2	cyclictest	739625	-21	kworker/u8:2+events_unbound	21:00:14	0
667079	99	31	26,3	cyclictest	990160	-21	/usr/sbin/munin	00:20:14	3
667078	99	31	24,5	cyclictest	766480	-21	/usr/sbin/munin	20:45:13	2
667074	99	31	28,2	cyclictest	895998	-21	kworker/u8:3+events_unbound	23:25:13	0
667074	99	31	28,2	cyclictest	880362	-21	kworker/u8:1+events_unbound	23:23:41	0
667074	99	31	28,2	cyclictest	698619	-21	kworker/u8:4+events_unbound	20:08:40	0
667079	99	30	25,4	cyclictest	677346	-21	kworker/u8:2+flush-259:0	19:30:00	3
667079	99	30	24,4	cyclictest	838389	-21	gpgv	21:55:00	3
667075	99	30	27,2	cyclictest	739625	-21	kworker/u8:2+flush-259:0	20:30:00	1
667074	99	30	27,2	cyclictest	968800	-21	kworker/u8:4+events_unbound	00:10:28	0
667074	99	30	27,2	cyclictest	797359	-21	kworker/u8:2+events_unbound	21:21:40	0
667074	99	30	26,3	cyclictest	895998	-21	kworker/u8:3+events_unbound	23:00:25	0
667078	99	29	23,4	cyclictest	900959	-21	apt-get	22:55:00	2
667075	99	29	25,3	cyclictest	335557	-21	systemd-journal	22:20:39	1
667074	99	29	25,3	cyclictest	713899	-21	kworker/u8:3+events_unbound	20:47:46	0
667079	99	28	25,2	cyclictest	677346	-21	kworker/u8:2+events_unbound	19:45:21	3
667079	99	28	22,4	cyclictest	865139	-21	/usr/sbin/munin	22:20:14	3
667075	99	28	23,4	cyclictest	984357	-21	latency_hist	00:15:00	1
667074	99	28	25,2	cyclictest	890640	-21	kworker/u8:2+flush-259:0	22:55:39	0
667074	99	28	25,2	cyclictest	792007	-21	kworker/u8:3+events_unbound	22:05:25	0
667079	99	27	21,3	cyclictest	995322	-21	/usr/sbin/munin	00:25:14	3
667079	99	27	20,5	cyclictest	894914	-21	ntpq	22:45:22	3
667075	99	27	23,3	cyclictest	880362	-21	kworker/u8:1+flush-259:0	23:59:59	1
667075	99	27	23,3	cyclictest	880362	-21	kworker/u8:1+flush-259:0	23:15:17	1
667075	99	27	23,3	cyclictest	335557	-21	systemd-journal	23:35:40	1
667074	99	27	24,2	cyclictest	729540	-21	kworker/u8:1+events_unbound	21:40:21	0
667074	99	27	21,4	cyclictest	875206	-21	latency_hist	22:30:01	0
667079	99	26	23,2	cyclictest	698619	-21	kworker/u8:4+events_unbound	20:19:41	3
667079	99	26	22,3	cyclictest	729540	-21	kworker/u8:1+events_unbound	21:27:41	3
667079	99	26	22,3	cyclictest	713899	-21	kworker/u8:3+events_unbound	20:30:14	3
667079	99	26	21,3	cyclictest	766337	-21	base64	20:45:01	3
667079	99	26	21,3	cyclictest	708976	-21	apt-get	19:50:13	3
667075	99	26	21,3	cyclictest	880346	-21	latency_hist	22:35:00	1
667075	99	26	20,4	cyclictest	859763	-21	latency_hist	22:15:00	1
667074	99	26	23,2	cyclictest	792007	-21	kworker/u8:3+events_unbound	22:20:28	0
667074	99	26	23,2	cyclictest	729540	-21	kworker/u8:1+events_unbound	21:30:26	0
667074	99	26	21,4	cyclictest	885716	-21	/usr/sbin/munin	22:40:15	0
667079	99	25	21,3	cyclictest	729540	-21	kworker/u8:1+events_unbound	21:10:19	3
667079	99	25	21,3	cyclictest	713899	-21	kworker/u8:3+events_unbound	20:01:40	3
667079	99	25	19,4	cyclictest	890640	-21	kworker/u8:2+flush-259:0	23:10:16	3
667078	99	25	19,4	cyclictest	792007	-21	kworker/u8:3+flush-259:0	21:45:17	2
667078	99	25	18,5	cyclictest	1000504	-21	/usr/sbin/munin	00:30:15	2
667075	99	25	22,2	cyclictest	890640	-21	kworker/u8:2+events_unbound	22:59:58	1
667075	99	25	22,2	cyclictest	713899	-21	kworker/u8:3+events_unbound	20:44:57	1
667074	99	25	22,2	cyclictest	792007	-21	kworker/u8:3+events_unbound	22:35:15	0
667079	99	24	20,3	cyclictest	880362	-21	kworker/u8:1+flush-259:0	23:05:01	3
667079	99	24	18,4	cyclictest	509	-21	rs:main		3
667078	99	24	18,4	cyclictest	719034	-21	latency_hist	20:00:01	2
667078	99	24	17,5	cyclictest	917053	-21	/usr/sbin/munin	23:10:15	2
667078	99	24	10,4	cyclictest	843007	-21	ntpq	21:55:20	2
667075	99	24	21,2	cyclictest	807628	-21	kworker/u8:4+events_unbound	21:27:53	1
667075	99	24	21,2	cyclictest	729540	-21	kworker/u8:1+events_unbound	21:52:58	1
667075	99	24	19,4	cyclictest	911939	-21	apt-get	23:05:11	1
667074	99	24	20,3	cyclictest	500	-21	systemd-logind	21:55:00	0
667079	99	23	21,1	cyclictest	698619	-21	kworker/u8:4+events_unbound	20:05:20	3
667079	99	23	19,3	cyclictest	911702	-21	kworker/u8:0+events_unbound	23:36:40	3
667079	99	23	19,3	cyclictest	792007	-21	kworker/u8:3+events_unbound	22:25:18	3
667079	99	23	19,3	cyclictest	729540	-21	kworker/u8:1+flush-259:0	21:15:25	3
667078	99	23	18,3	cyclictest	938170	-21	/usr/sbin/munin	23:30:22	2
667078	99	23	16,5	cyclictest	335557	-21	systemd-journal	20:30:00	2
667075	99	23	20,2	cyclictest	963504	-21	kworker/u8:3+events_unbound	00:05:03	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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