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 Oct 27, 2025 00:44:05)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
900365	99	42	36,4	cyclictest	1035798	-21	latency_hist	21:20:01	1
900371	99	41	38,2	cyclictest	1160182	-21	kworker/u8:4+events_unbound	23:49:59	3
900371	99	40	37,2	cyclictest	1061561	-21	kworker/u8:1+events_unbound	23:25:00	3
900361	99	39	31,6	cyclictest	998943	-21	base64	20:45:01	0
900367	99	36	31,3	cyclictest	967330	-21	kworker/u8:2+flush-259:0	21:55:00	2
900371	99	34	30,3	cyclictest	1061561	-21	kworker/u8:1+flush-259:0	23:25:26	3
900371	99	33	30,2	cyclictest	967330	-21	kworker/u8:2+events_unbound	22:05:16	3
900365	99	33	29,2	cyclictest	921153	-21	kworker/u8:2+flush-259:0	19:40:17	1
900371	99	32	29,2	cyclictest	967330	-21	kworker/u8:2+events_unbound	20:55:23	3
900367	99	32	29,2	cyclictest	967330	-21	kworker/u8:2+flush-259:0	22:40:00	2
900367	99	32	28,3	cyclictest	1114071	-21	kworker/u8:0+flush-259:0	22:45:01	2
900365	99	32	27,4	cyclictest	1113422	-21	apt-get	22:35:00	1
900365	99	32	26,4	cyclictest	999442	-21	/usr/sbin/munin	20:45:16	1
900371	99	31	27,3	cyclictest	1061561	-21	kworker/u8:1+flush-259:0	21:55:20	3
900371	99	30	27,2	cyclictest	967330	-21	kworker/u8:2+events_unbound	23:10:24	3
900371	99	30	26,2	cyclictest	1200684	-21	kworker/u8:3+events_unbound	00:30:18	3
900365	99	30	26,3	cyclictest	993808	-21	kworker/u8:1+events_unbound	21:15:00	1
900365	99	30	26,3	cyclictest	988238	-21	/usr/sbin/munin	20:35:15	1
900365	99	30	25,3	cyclictest	1160182	-21	kworker/u8:4+flush-259:0	00:10:20	1
900365	99	30	25,3	cyclictest	1160182	-21	kworker/u8:4+flush-259:0	00:10:19	1
900361	99	30	25,3	cyclictest	952070	-21	apt-get	20:00:12	0
900371	99	29	26,2	cyclictest	915769	-21	kworker/u8:1+flush-259:0	20:20:00	3
900371	99	29	26,2	cyclictest	1149854	-21	kworker/u8:0+events_unbound	23:35:12	3
900371	99	29	25,2	cyclictest	836679	-21	kworker/u8:0+events_unbound	19:10:18	3
900371	99	29	24,4	cyclictest	1129704	-21	diskstats	22:50:15	3
900371	99	28	25,2	cyclictest	967330	-21	kworker/u8:2+flush-259:0	21:35:20	3
900371	99	28	25,2	cyclictest	836679	-21	kworker/u8:0+events_unbound	19:19:29	3
900371	99	28	24,3	cyclictest	972724	-21	kworker/u8:5+flush-259:0	20:20:25	3
900365	99	28	24,3	cyclictest	1097554	-21	kworker/u8:4+flush-259:0	22:30:01	1
900371	99	27	24,2	cyclictest	1149854	-21	kworker/u8:0+flush-259:0	23:50:17	3
900371	99	27	22,3	cyclictest	1025704	-21	/usr/sbin/munin	21:10:17	3
900367	99	27	24,2	cyclictest	905459	-21	kworker/u8:3+flush-259:0	19:25:25	2
900365	99	27	24,2	cyclictest	967330	-21	kworker/u8:2+flush-259:0	22:35:17	1
900365	99	27	24,2	cyclictest	915769	-21	kworker/u8:1+flush-259:0	19:45:19	1
900365	99	27	24,2	cyclictest	1114071	-21	kworker/u8:0+flush-259:0	22:40:18	1
900371	99	26	19,2	cyclictest	1061561	-21	kworker/u8:1+events_unbound	22:15:18	3
900371	99	25	22,2	cyclictest	967330	-21	kworker/u8:2+flush-259:0	22:00:22	3
900371	99	25	22,2	cyclictest	1061561	-21	kworker/u8:1+events_unbound	23:00:14	3
900367	99	25	22,2	cyclictest	1061561	-21	kworker/u8:1+flush-259:0	22:15:20	2
900367	99	25	21,3	cyclictest	836679	-21	kworker/u8:0+flush-259:0	19:25:00	2
900367	99	25	20,4	cyclictest	993808	-21	kworker/u8:1+flush-259:0	21:00:22	2
900365	99	25	20,3	cyclictest	905459	-21	kworker/u8:3+flush-259:0	19:35:00	1
900365	99	25	20,3	cyclictest	905459	-21	kworker/u8:3+flush-259:0	19:35:00	1
900371	99	24	22,2	cyclictest	905459	-21	kworker/u8:3+flush-259:0	19:25:19	3
900371	99	24	21,2	cyclictest	1217449	-21	kworker/u8:2+flush-259:0	00:15:21	3
900371	99	24	20,3	cyclictest	915769	-21	kworker/u8:1+events_unbound	19:45:29	3
900365	99	24	21,2	cyclictest	1061561	-21	kworker/u8:1+flush-259:0	23:00:00	1
900361	99	24	20,3	cyclictest	1201336	-21	latency_hist	00:00:00	0
900361	99	24	17,5	cyclictest	1243026	-21	latency_hist	00:40:01	0
900371	99	23	20,2	cyclictest	972724	-21	kworker/u8:5+flush-259:0	20:35:20	3
900371	99	23	20,2	cyclictest	1061561	-21	kworker/u8:1+flush-259:0	22:10:26	3
900371	99	23	18,3	cyclictest	1061561	-21	kworker/u8:1+events_unbound	22:45:18	3
900371	99	23	17,4	cyclictest	962162	-21	latency_hist	20:10:01	3
900367	99	23	20,2	cyclictest	998805	-21	gpgv	20:45:01	2
900367	99	23	20,2	cyclictest	915769	-21	kworker/u8:1+events_unbound	19:30:20	2
900367	99	23	20,2	cyclictest	915769	-21	kworker/u8:1+events_unbound	19:30:19	2
900367	99	23	20,2	cyclictest	905459	-21	kworker/u8:3+events_unbound	19:35:25	2
900367	99	23	20,2	cyclictest	1170456	-21	kworker/u8:2+flush-259:0	23:30:20	2
900367	99	23	20,2	cyclictest	1149854	-21	kworker/u8:0+flush-259:0	23:45:24	2
900367	99	23	19,3	cyclictest	967330	-21	kworker/u8:2+flush-259:0	22:05:20	2
900365	99	23	20,2	cyclictest	1160182	-21	kworker/u8:4+flush-259:0	23:40:15	1
900365	99	23	17,4	cyclictest	956958	-21	latency_hist	20:05:01	1
900371	99	22	19,2	cyclictest	993808	-21	kworker/u8:1+flush-259:0	20:45:29	3
900371	99	22	19,2	cyclictest	967330	-21	kworker/u8:2+flush-259:0	23:15:25	3
900371	99	22	19,2	cyclictest	1200684	-21	kworker/u8:3+events_unbound	00:20:20	3
900371	99	22	18,2	cyclictest	1036027	-21	kworker/u8:4-ext4-rsv-conversion	21:25:01	3
900367	99	22	19,2	cyclictest	836679	-21	kworker/u8:0+events_unbound	19:15:19	2
900367	99	22	18,3	cyclictest	1227778	-21	kworker/u8:0+flush-259:0	00:30:01	2
900367	99	22	18,3	cyclictest	1160182	-21	kworker/u8:4+flush-259:0	23:25:17	2
900365	99	22	20,1	cyclictest	910548	-21	fwupd	19:19:29	1
900365	99	22	18,3	cyclictest	905459	-21	kworker/u8:3+flush-259:0	19:15:00	1
900365	99	22	16,4	cyclictest	1212079	-21	latency_hist	00:10:00	1
900361	99	22	15,5	cyclictest	1020122	-21	/usr/sbin/munin	21:05:15	0
900361	99	22	1,20	cyclictest	1	-21	systemd	23:47:02	0
900371	99	21	18,2	cyclictest	915769	-21	kworker/u8:1+events_unbound	20:10:23	3
900371	99	21	17,3	cyclictest	972724	-21	kworker/u8:5+events_unbound	20:31:29	3
900371	99	21	17,3	cyclictest	1097554	-21	kworker/u8:4+flush-259:0	22:25:26	3
900367	99	21	18,2	cyclictest	993808	-21	kworker/u8:1+flush-259:0	21:05:20	2
900367	99	21	18,2	cyclictest	967330	-21	kworker/u8:2+events_unbound	20:35:19	2
900367	99	21	18,2	cyclictest	946647	-21	kworker/u8:0+events_unbound	20:14:29	2
900367	99	21	18,2	cyclictest	1160182	-21	kworker/u8:4+events_unbound	23:50:23	2
900367	99	21	18,2	cyclictest	1061561	-21	kworker/u8:1+flush-259:0	21:55:22	2
900367	99	21	17,3	cyclictest	967330	-21	kworker/u8:2+flush-259:0	21:45:27	2
900367	99	21	15,4	cyclictest	2698871	-21	systemd-journal	20:20:00	2
900365	99	21	18,2	cyclictest	1139558	-21	kworker/u8:4+flush-259:0	23:00:26	1
900365	99	21	15,4	cyclictest	2698871	-21	systemd-journal	23:33:42	1
900361	99	21	17,3	cyclictest	915769	-21	kworker/u8:1+flush-259:0	20:15:00	0
900361	99	21	17,3	cyclictest	3000061	-21	in:imuxsock	20:50:00	0
900371	99	20	17,2	cyclictest	1170456	-21	kworker/u8:2+flush-259:0	00:00:15	3
900371	99	20	17,2	cyclictest	1061561	-21	kworker/u8:1+events_unbound	21:50:23	3
900371	99	20	16,3	cyclictest	1030845	-21	kworker/u8:3+flush-259:0	21:40:15	3
900367	99	20	17,2	cyclictest	967330	-21	kworker/u8:2+events_unbound	21:28:28	2
900367	99	20	17,2	cyclictest	915769	-21	kworker/u8:1+flush-259:0	19:50:26	2
900367	99	20	17,2	cyclictest	1036027	-21	kworker/u8:4+events_unbound	21:20:14	2
900367	99	20	17,2	cyclictest	1030845	-21	kworker/u8:3+events_unbound	21:30:13	2
900367	99	20	16,3	cyclictest	1056637	-21	/usr/sbin/munin	21:40:15	2
900365	99	20	16,3	cyclictest	905459	-21	kworker/u8:3+flush-259:0	19:25:19	1
900365	99	20	16,3	cyclictest	1196116	-21	kworker/u8:1+events_unbound	23:55:18	1
900365	99	20	14,4	cyclictest	1160161	-21	latency_hist	23:20:01	1
900361	99	20	16,2	cyclictest	1	-21	systemd	21:02:29	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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