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 Wed Jun 03, 2026 12:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
756272	99	38	34,3	cyclictest	793423	-21	kworker/u8:4+flush-259:0	07:50:00	0
756282	99	36	29,5	cyclictest	807893	-21	ntpq	07:55:23	2
756272	99	36	29,5	cyclictest	980232	-21	cat	10:45:01	0
756282	99	34	31,2	cyclictest	771149	-21	kworker/u8:1+flush-259:0	07:25:16	2
756282	99	34	28,4	cyclictest	1016779	-21	/usr/sbin/munin	11:20:13	2
756278	99	34	30,3	cyclictest	829413	-21	gpgv	08:20:00	1
756278	99	33	29,3	cyclictest	1026484	-21	kworker/u8:2+flush-259:0	11:50:00	1
756272	99	33	27,4	cyclictest	802668	-21	ntpq	07:50:22	0
756272	99	33	26,5	cyclictest	1092980	-21	ntpq	12:30:20	0
756287	99	32	29,2	cyclictest	985664	-21	kworker/u8:0+flush-259:0	12:20:16	3
756282	99	32	25,5	cyclictest	1099059	-21	latency_hist	12:40:01	2
756282	99	31	27,3	cyclictest	830041	-21	kworker/u8:2+flush-259:0	09:19:59	2
756278	99	31	27,3	cyclictest	830041	-21	kworker/u8:2+flush-259:0	09:14:59	1
756272	99	31	25,4	cyclictest	1047862	-21	diskstats	11:50:13	0
756287	99	30	25,4	cyclictest	968897	-21	ntpq	10:30:21	3
756287	99	29	26,2	cyclictest	985664	-21	kworker/u8:0+events_unbound	11:50:19	3
756282	99	29	24,3	cyclictest	985664	-21	kworker/u8:0+events_unbound	11:40:22	2
756282	99	29	22,5	cyclictest	1031111	-21	ntpq	11:30:20	2
756282	99	28	25,2	cyclictest	829384	-21	apt-get	08:20:02	2
756282	99	28	24,3	cyclictest	735798	-21	kworker/u8:0+events_unbound	08:10:19	2
756287	99	27	23,3	cyclictest	792254	-21	kworker/u8:1+events_unbound	08:42:30	3
756282	99	27	21,4	cyclictest	974913	-21	latency_hist	10:40:01	2
756278	99	27	23,3	cyclictest	954379	-21	kworker/u8:1+flush-259:0	12:25:17	1
756272	99	27	23,3	cyclictest	954379	-21	kworker/u8:1+flush-259:0	12:10:00	0
756287	99	26	23,3	cyclictest	985664	-21	kworker/u8:0+events_unbound	10:50:23	3
756287	99	26	23,2	cyclictest	985664	-21	kworker/u8:0+events_unbound	11:40:21	3
756287	99	26	23,2	cyclictest	830041	-21	kworker/u8:2+flush-259:0	08:45:25	3
756282	99	26	22,3	cyclictest	985664	-21	kworker/u8:0+events_unbound	11:10:00	2
756282	99	26	20,4	cyclictest	1046539	-21	ntpq	11:45:21	2
756278	99	26	21,4	cyclictest	954379	-21	kworker/u8:1+flush-259:0	11:40:00	1
756272	99	26	22,3	cyclictest	985901	-21	apt-get	10:50:11	0
756287	99	25	22,2	cyclictest	861337	-21	kworker/u8:0+flush-259:0	08:55:22	3
756287	99	25	22,2	cyclictest	735798	-21	kworker/u8:0+flush-259:0	08:00:21	3
756287	99	25	21,3	cyclictest	808674	-21	kworker/u8:3+flush-259:0	08:25:00	3
756287	99	25	21,3	cyclictest	808674	-21	kworker/u8:3+events_unbound	08:35:14	3
756287	99	25	21,2	cyclictest	792254	-21	kworker/u8:1+flush-259:0	08:25:24	3
756282	99	25	21,3	cyclictest	954379	-21	kworker/u8:1+events_unbound	12:25:28	2
756278	99	25	21,3	cyclictest	908525	-21	kworker/u8:2+flush-259:0	10:15:25	1
756272	99	25	22,2	cyclictest	746214	-21	kworker/u8:3+flush-259:0	07:35:17	0
756287	99	24	21,3	cyclictest	760413	-21	kworker/u8:2+events_unbound	07:10:31	3
756287	99	24	21,1	cyclictest	876997	-21	sh	09:04:59	3
756287	99	24	20,3	cyclictest	335557	-21	systemd-journal	09:51:29	3
756282	99	24	20,3	cyclictest	908525	-21	kworker/u8:2+events_unbound	09:54:29	2
756282	99	24	20,3	cyclictest	746214	-21	kworker/u8:3+flush-259:0	07:35:21	2
756278	99	24	19,3	cyclictest	1094136	-21	/usr/sbin/munin	12:35:14	1
756272	99	24	20,3	cyclictest	923600	-21	kworker/u8:4+flush-259:0	10:05:21	0
756272	99	24	20,3	cyclictest	1026484	-21	kworker/u8:2+events_unbound	12:00:18	0
756272	99	24	20,3	cyclictest	1026484	-21	kworker/u8:2+events_unbound	12:00:18	0
756272	99	24	17,5	cyclictest	922457	-21	ntpq	09:45:18	0
756287	99	23	20,2	cyclictest	887305	-21	kworker/u8:1+flush-259:0	09:45:15	3
756287	99	23	19,3	cyclictest	908525	-21	kworker/u8:2+flush-259:0	10:10:00	3
756287	99	23	19,3	cyclictest	808674	-21	kworker/u8:3+events_unbound	08:30:25	3
756287	99	23	19,3	cyclictest	792254	-21	kworker/u8:1+events_unbound	07:49:29	3
756287	99	23	18,4	cyclictest	1068338	-21	apt-get	12:10:13	3
756282	99	23	20,2	cyclictest	861337	-21	kworker/u8:0+flush-259:0	08:55:25	2
756282	99	23	19,3	cyclictest	938893	-21	kworker/u8:0+flush-259:0	10:15:21	2
756278	99	23	19,3	cyclictest	985664	-21	kworker/u8:0+flush-259:0	11:10:26	1
756278	99	23	18,3	cyclictest	954379	-21	kworker/u8:1+flush-259:0	12:05:01	1
756278	99	23	17,4	cyclictest	1037401	-21	/usr/sbin/munin	11:40:14	1
756272	99	23	19,3	cyclictest	908525	-21	kworker/u8:2+flush-259:0	10:20:00	0
756272	99	23	17,4	cyclictest	897522	-21	kworker/u8:3+flush-259:0	09:25:18	0
756272	99	23	16,5	cyclictest	735798	-21	kworker/u8:0+flush-259:0	07:30:18	0
756287	99	22	19,2	cyclictest	985664	-21	kworker/u8:0+events_unbound	11:30:18	3
756287	99	22	19,2	cyclictest	985664	-21	kworker/u8:0+events_unbound	11:25:19	3
756287	99	22	19,2	cyclictest	861337	-21	kworker/u8:0+events_unbound	09:20:16	3
756287	99	22	19,2	cyclictest	761401	-21	kworker/u8:4+flush-259:0	07:20:19	3
756287	99	22	19,2	cyclictest	735798	-21	kworker/u8:0+flush-259:0	07:50:15	3
756287	99	22	18,3	cyclictest	908525	-21	kworker/u8:2+flush-259:0	10:20:15	3
756287	99	22	18,3	cyclictest	877221	-21	kworker/u8:3+events_unbound	09:05:23	3
756287	99	22	18,3	cyclictest	781742	-21	kworker/u8:2+events_unbound	07:55:15	3
756282	99	22	18,3	cyclictest	954379	-21	kworker/u8:1+events_unbound	11:58:31	2
756282	99	22	18,3	cyclictest	908525	-21	kworker/u8:2+events_unbound	09:35:22	2
756282	99	22	18,3	cyclictest	830041	-21	kworker/u8:2+events_unbound	08:40:23	2
756282	99	22	18,3	cyclictest	808674	-21	kworker/u8:3+events_unbound	08:09:28	2
756282	99	22	18,3	cyclictest	735798	-21	kworker/u8:0+flush-259:0	07:30:26	2
756282	99	22	18,3	cyclictest	335557	-21	systemd-journal	08:38:29	2
756282	99	22	15,5	cyclictest	840130	-21	latency_hist	08:30:01	2
756287	99	21	18,3	cyclictest	985664	-21	kworker/u8:0+events_unbound	11:00:02	3
756287	99	21	18,3	cyclictest	954379	-21	kworker/u8:1+events_unbound	10:45:23	3
756287	99	21	18,2	cyclictest	985664	-21	kworker/u8:0+flush-259:0	11:20:31	3
756287	99	21	18,2	cyclictest	959742	-21	apt-get	10:25:12	3
756287	99	21	18,2	cyclictest	887305	-21	kworker/u8:1+events_unbound	09:30:15	3
756287	99	21	18,2	cyclictest	887305	-21	kworker/u8:1+events_unbound	09:30:14	3
756282	99	21	17,3	cyclictest	985664	-21	kworker/u8:0+events_unbound	11:04:59	2
756282	99	21	17,3	cyclictest	923361	-21	kworker/u8:3+events_unbound	09:55:15	2
756282	99	21	17,3	cyclictest	908525	-21	kworker/u8:2+events_unbound	10:20:13	2
756282	99	21	17,3	cyclictest	887305	-21	kworker/u8:1+events_unbound	09:27:29	2
756278	99	21	16,4	cyclictest	771997	-21	apt-get	07:25:12	1
756278	99	21	14,5	cyclictest	335557	-21	systemd-journal	10:25:00	1
756272	99	21	18,2	cyclictest	907863	-21	sh	09:35:00	0
756272	99	21	18,2	cyclictest	907863	-21	sh	09:34:59	0
756272	99	21	16,3	cyclictest	335557	-21	systemd-journal	08:25:29	0
756272	99	21	14,5	cyclictest	335557	-21	systemd-journal	11:15:00	0
756287	99	20	17,2	cyclictest	808674	-21	kworker/u8:3+flush-259:0	08:05:19	3
756287	99	20	17,2	cyclictest	808674	-21	kworker/u8:3+events_unbound	08:10:31	3
756287	99	20	17,2	cyclictest	781742	-21	kworker/u8:2+events_unbound	07:40:16	3
756287	99	20	17,2	cyclictest	746214	-21	kworker/u8:3+flush-259:0	07:15:20	3
756287	99	20	17,2	cyclictest	746214	-21	kworker/u8:3+flush-259:0	07:15:20	3
756287	99	20	16,3	cyclictest	985664	-21	kworker/u8:0+events_unbound	10:58:03	3
756287	99	20	16,2	cyclictest	746214	-21	kworker/u8:3+events_unbound	07:35:17	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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