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 Sat Aug 22, 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
835101	99	49	46,2	cyclictest	944965	-21	kworker/u8:1+events_unbound	22:40:22	3
835090	99	48	45,2	cyclictest	1060348	-21	kworker/u8:2+flush-259:0	23:20:00	0
835090	99	48	45,2	cyclictest	1060348	-21	kworker/u8:2+flush-259:0	23:20:00	0
835090	99	44	38,4	cyclictest	509	-21	rs:main		0
835101	99	41	38,2	cyclictest	903240	-21	kworker/u8:0+events_unbound	20:20:11	3
835101	99	40	37,2	cyclictest	1060348	-21	kworker/u8:2+events_unbound	23:10:24	3
835097	99	40	36,3	cyclictest	1086250	-21	kworker/u8:1+flush-259:0	23:55:01	2
835090	99	40	36,3	cyclictest	1024423	-21	kworker/u8:3+flush-259:0	22:45:24	0
835101	99	39	36,2	cyclictest	871950	-21	kworker/u8:4+events_unbound	20:10:16	3
835101	99	39	36,2	cyclictest	1024423	-21	kworker/u8:3+flush-259:0	22:50:23	3
835093	99	38	33,3	cyclictest	1086674	-21	cat	23:10:00	1
835093	99	37	32,4	cyclictest	835300	-21	apt-get	19:10:11	1
835090	99	36	29,5	cyclictest	950121	-21	latency_hist	21:00:01	0
835090	99	36	29,5	cyclictest	950121	-21	latency_hist	21:00:00	0
835101	99	35	33,2	cyclictest	871950	-21	kworker/u8:4+flush-259:0	20:35:20	3
835101	99	35	33,2	cyclictest	829916	-21	kworker/u8:2+flush-259:0	20:05:20	3
835101	99	35	32,2	cyclictest	871950	-21	kworker/u8:4+events_unbound	19:50:13	3
835093	99	35	30,4	cyclictest	1112817	-21	apt-get	23:35:12	1
835101	99	34	32,2	cyclictest	1060348	-21	kworker/u8:2+events_unbound	23:09:57	3
835101	99	34	31,2	cyclictest	954881	-21	kworker/u8:2+events_unbound	21:10:21	3
835101	99	34	31,2	cyclictest	944965	-21	kworker/u8:1+events_unbound	22:03:55	3
835101	99	34	31,2	cyclictest	893079	-21	kworker/u8:3+events_unbound	21:08:57	3
835101	99	34	28,4	cyclictest	892419	-21	latency_hist	20:05:01	3
835093	99	34	30,3	cyclictest	335557	-21	systemd-journal	19:58:55	1
835090	99	34	26,5	cyclictest	335557	-21	systemd-journal	20:15:00	0
835101	99	33	31,2	cyclictest	944965	-21	kworker/u8:1+events_unbound	21:20:14	3
835101	99	33	31,2	cyclictest	871919	-21	kworker/u8:0+events_unbound	19:59:56	3
835101	99	33	31,1	cyclictest	1086250	-21	kworker/u8:1+events_unbound	23:20:23	3
835101	99	33	30,2	cyclictest	944965	-21	kworker/u8:1+events_unbound	21:29:57	3
835101	99	33	30,2	cyclictest	903240	-21	kworker/u8:0+flush-259:0	20:50:24	3
835101	99	33	29,3	cyclictest	954881	-21	kworker/u8:2+events_unbound	21:39:55	3
835101	99	33	29,3	cyclictest	1060348	-21	kworker/u8:2+events_unbound	00:13:21	3
835101	99	33	28,2	cyclictest	1060348	-21	kworker/u8:2+events_unbound	23:15:15	3
835101	99	33	28,2	cyclictest	1060348	-21	kworker/u8:2+events_unbound	23:15:14	3
835097	99	33	27,4	cyclictest	1018854	-21	/usr/sbin/munin	22:05:15	2
835093	99	33	28,3	cyclictest	966050	-21	latency_hist	21:15:01	1
835101	99	32	29,2	cyclictest	903240	-21	kworker/u8:0+events_unbound	20:58:56	3
835101	99	32	29,2	cyclictest	903240	-21	kworker/u8:0+events_unbound	20:58:56	3
835101	99	32	29,2	cyclictest	1133256	-21	kworker/u8:0+events_unbound	00:35:19	3
835101	99	32	29,2	cyclictest	1044916	-21	kworker/u8:0+events_unbound	22:56:56	3
835101	99	32	29,2	cyclictest	1018591	-21	kworker/u8:2+events_unbound	22:10:19	3
835090	99	32	28,3	cyclictest	944965	-21	kworker/u8:1+flush-259:0	21:25:23	0
835101	99	31	28,2	cyclictest	903240	-21	kworker/u8:0+events_unbound	21:01:00	3
835101	99	31	27,3	cyclictest	944965	-21	kworker/u8:1+events_unbound	22:16:57	3
835097	99	31	28,2	cyclictest	986980	-21	kworker/u8:0+flush-259:0	21:40:23	2
835097	99	31	26,3	cyclictest	944965	-21	kworker/u8:1+flush-259:0	21:30:21	2
835097	99	31	26,3	cyclictest	829915	-21	kworker/u8:1+flush-259:0	19:20:15	2
835093	99	31	27,3	cyclictest	335557	-21	systemd-journal	23:01:25	1
835090	99	31	26,3	cyclictest	986982	-21	gpgv	21:35:00	0
835101	99	30	27,2	cyclictest	954881	-21	kworker/u8:2+flush-259:0	21:15:16	3
835101	99	30	27,2	cyclictest	944965	-21	kworker/u8:1+events_unbound	22:35:14	3
835101	99	30	27,2	cyclictest	944965	-21	kworker/u8:1+events_unbound	22:06:12	3
835101	99	30	27,2	cyclictest	829916	-21	kworker/u8:2+events_unbound	20:15:23	3
835101	99	30	27,2	cyclictest	829916	-21	kworker/u8:2+events_unbound	19:38:56	3
835101	99	30	27,2	cyclictest	829916	-21	kworker/u8:2+events_unbound	19:26:56	3
835101	99	30	27,2	cyclictest	1060348	-21	kworker/u8:2+events_unbound	00:00:12	3
835101	99	30	27,2	cyclictest	1024423	-21	kworker/u8:3+events_unbound	22:45:20	3
835101	99	30	26,3	cyclictest	903240	-21	kworker/u8:0+flush-259:0	20:45:25	3
835097	99	30	26,2	cyclictest	1060348	-21	kworker/u8:2+flush-259:0	00:20:18	2
835097	99	30	23,5	cyclictest	902318	-21	ntpq	20:10:19	2
835093	99	30	26,3	cyclictest	1123192	-21	apt-get	23:45:10	1
835090	99	30	24,4	cyclictest	335557	-21	systemd-journal	19:25:00	0
835101	99	29	26,2	cyclictest	944965	-21	kworker/u8:1+events_unbound	21:46:57	3
835101	99	29	26,2	cyclictest	871950	-21	kworker/u8:4+events_unbound	19:45:23	3
835101	99	29	26,2	cyclictest	829916	-21	kworker/u8:2+events_unbound	19:15:25	3
835101	99	29	26,2	cyclictest	1133256	-21	kworker/u8:0+events_unbound	00:19:55	3
835101	99	29	26,2	cyclictest	1086250	-21	kworker/u8:1+events_unbound	23:35:56	3
835097	99	29	23,4	cyclictest	1097001	-21	latency_hist	23:20:01	2
835097	99	29	23,4	cyclictest	1097001	-21	latency_hist	23:20:00	2
835101	99	28	25,2	cyclictest	829916	-21	kworker/u8:2+events_unbound	19:20:55	3
835101	99	28	25,2	cyclictest	1086250	-21	kworker/u8:1+events_unbound	23:50:55	3
835101	99	28	25,2	cyclictest	1060348	-21	kworker/u8:2+events_unbound	23:01:56	3
835097	99	28	21,5	cyclictest	1007400	-21	ntpq	21:50:21	2
835093	99	28	22,4	cyclictest	1132354	-21	ntpq	23:50:21	1
835090	99	28	25,2	cyclictest	944965	-21	kworker/u8:1+events_unbound	22:00:15	0
835090	99	28	25,2	cyclictest	871950	-21	kworker/u8:4+flush-259:0	20:05:56	0
835090	99	28	22,4	cyclictest	975479	-21	ntpq	21:20:20	0
835101	99	27	24,2	cyclictest	986980	-21	kworker/u8:0+events_unbound	21:40:56	3
835101	99	27	24,2	cyclictest	866095	-21	kworker/u8:3+events_unbound	19:40:12	3
835097	99	27	16,9	cyclictest	944965	-21	kworker/u8:1+flush-259:0	21:30:01	2
835093	99	27	23,3	cyclictest	1024333	-21	gpgv	22:10:01	1
835093	99	27	21,4	cyclictest	1044868	-21	latency_hist	22:30:00	1
835090	99	27	24,2	cyclictest	490	-21	dbus-daemon	19:30:00	0
835090	99	27	23,3	cyclictest	866751	-21	apt-get	19:40:11	0
835090	99	27	23,3	cyclictest	1024423	-21	kworker/u8:3+events_unbound	22:21:55	0
835090	99	27	21,4	cyclictest	335557	-21	systemd-journal	22:35:00	0
835101	99	26	24,2	cyclictest	1086250	-21	kworker/u8:1+events_unbound	23:32:56	3
835101	99	26	23,2	cyclictest	1060348	-21	kworker/u8:2+events_unbound	00:33:30	3
835101	99	26	22,3	cyclictest	819724	-21	kworker/u8:0+events_unbound	19:10:02	3
835090	99	26	23,2	cyclictest	1086250	-21	kworker/u8:1+flush-259:0	23:20:25	0
835090	99	26	23,2	cyclictest	1024423	-21	kworker/u8:3+events_unbound	22:52:56	0
835090	99	26	22,2	cyclictest	1070716	-21	kworker/u8:4+flush-259:0	23:00:21	0
835101	99	25	22,2	cyclictest	1133256	-21	kworker/u8:0+events_unbound	00:25:21	3
835097	99	25	19,4	cyclictest	1107352	-21	latency_hist	23:30:01	2
835097	99	25	19,4	cyclictest	1102174	-21	latency_hist	23:25:00	2
835093	99	25	20,4	cyclictest	335557	-21	systemd-journal	23:57:22	1
835090	99	25	22,2	cyclictest	986980	-21	kworker/u8:0+events_unbound	21:56:55	0
835090	99	25	21,3	cyclictest	850595	-21	kworker/u8:0+flush-259:0	19:35:00	0
835101	99	24	21,2	cyclictest	871950	-21	kworker/u8:4+events_unbound	20:25:23	3
835097	99	24	19,3	cyclictest	934207	-21	basename	20:45:00	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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