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 30, 2026 12:44:05)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
907967	99	38	35,2	cyclictest	1006416	-21	kworker/u8:2+flush-259:0	09:19:59	0
907972	99	37	32,3	cyclictest	252	-21	systemd-journal	10:16:22	1
907981	99	35	31,3	cyclictest	1121332	-21	kworker/u8:1+events_unbound	10:57:34	3
907977	99	35	31,2	cyclictest	1099749	-21	fdisk	10:15:57	2
907967	99	35	31,3	cyclictest	1105832	-21	kworker/u8:2+events_unbound	10:51:44	0
907981	99	34	31,2	cyclictest	892820	-21	kworker/u8:1+flush-259:0	07:15:01	3
907972	99	34	30,3	cyclictest	1147776	-21	kworker/u8:0+flush-259:0	11:35:56	1
907967	99	33	30,2	cyclictest	1017532	-21	apt-get	09:00:11	0
907981	99	32	28,3	cyclictest	1094427	-21	kworker/u8:1+events_unbound	10:16:25	3
907967	99	32	27,4	cyclictest	1006416	-21	kworker/u8:2+flush-259:0	09:05:22	0
907981	99	31	28,2	cyclictest	3055436	-21	kworker/u8:2+events_unbound	07:20:14	3
907967	99	31	24,5	cyclictest	1210116	-21	diskstats	12:05:12	0
907981	99	29	25,3	cyclictest	907905	-21	latency_hist	07:10:00	3
907981	99	29	25,3	cyclictest	1022450	-21	kworker/u8:0+flush-259:0	10:05:34	3
907967	99	29	25,3	cyclictest	1006636	-21	apt-get	08:45:12	0
907981	99	28	24,3	cyclictest	1022450	-21	kworker/u8:0+flush-259:0	09:50:16	3
907981	99	28	23,3	cyclictest	252	-21	systemd-journal	11:10:45	3
907967	99	28	24,3	cyclictest	1048388	-21	apt-get	09:30:10	0
907981	99	27	24,2	cyclictest	918292	-21	kworker/u8:3+events_unbound	07:35:19	3
907981	99	27	24,2	cyclictest	892820	-21	kworker/u8:1+events_unbound	08:10:20	3
907981	99	27	21,4	cyclictest	1132146	-21	latency_hist	10:50:00	3
907977	99	27	20,6	cyclictest	1162366	-21	ntpq	11:15:19	2
907972	99	27	22,4	cyclictest	1137582	-21	/usr/sbin/munin	10:55:14	1
907967	99	27	23,3	cyclictest	1084151	-21	kworker/u8:3+events_unbound	10:16:20	0
907981	99	26	20,4	cyclictest	1204508	-21	latency_hist	12:00:00	3
907972	99	26	22,2	cyclictest	954554	-21	/usr/sbin/munin	07:55:13	1
907972	99	26	20,4	cyclictest	1189288	-21	apt-get	11:45:12	1
907967	99	26	22,3	cyclictest	1220055	-21	kworker/u8:3+flush-259:0	12:30:16	0
907981	99	25	21,3	cyclictest	1121332	-21	kworker/u8:1+events_unbound	10:40:20	3
907972	99	25	19,4	cyclictest	1068902	-21	/usr/sbin/munin	09:50:13	1
907981	99	24	20,3	cyclictest	252	-21	systemd-journal	08:05:46	3
907981	99	24	20,3	cyclictest	1111019	-21	kworker/u8:4+flush-259:0	11:30:59	3
907981	99	24	20,3	cyclictest	1022450	-21	kworker/u8:0+flush-259:0	09:35:00	3
907972	99	24	19,4	cyclictest	1111019	-21	kworker/u8:4+flush-259:0	11:10:15	1
907967	99	24	21,2	cyclictest	1225386	-21	kworker/u8:2+events_unbound	12:25:24	0
907967	99	24	21,2	cyclictest	1225386	-21	kworker/u8:2+events_unbound	12:25:23	0
907967	99	24	20,3	cyclictest	954353	-21	kworker/u8:0+flush-259:0	08:20:20	0
907981	99	23	19,3	cyclictest	1111019	-21	kworker/u8:4+events_unbound	10:35:45	3
907981	99	23	19,3	cyclictest	1006416	-21	kworker/u8:2+flush-259:0	09:35:20	3
907981	99	23	19,3	cyclictest	1006416	-21	kworker/u8:2+events_unbound	09:57:45	3
907977	99	23	4,6	cyclictest	1203788	-21	/usr/sbin/munin	11:55:22	2
907977	99	23	19,3	cyclictest	1111019	-21	kworker/u8:4+flush-259:0	11:25:24	2
907977	99	23	18,3	cyclictest	1106046	-21	/usr/sbin/munin	10:25:20	2
907967	99	23	19,3	cyclictest	1100861	-21	apt-get	10:20:10	0
907967	99	23	19,3	cyclictest	1022450	-21	kworker/u8:0+flush-259:0	09:20:21	0
907967	99	23	17,4	cyclictest	1189022	-21	latency_hist	11:45:01	0
907981	99	22	19,2	cyclictest	1006416	-21	kworker/u8:2+flush-259:0	09:25:31	3
907981	99	22	18,3	cyclictest	1214824	-21	kworker/u8:1+flush-259:0	12:20:21	3
907981	99	22	18,3	cyclictest	1163294	-21	latency_hist	11:20:00	3
907981	99	22	18,3	cyclictest	1147776	-21	kworker/u8:0+events_unbound	12:03:46	3
907981	99	22	17,4	cyclictest	1068665	-21	latency_hist	09:50:00	3
907977	99	22	17,4	cyclictest	1068927	-21	apt-get	09:50:11	2
907972	99	22	17,3	cyclictest	1240849	-21	apt-get	12:35:12	1
907972	99	22	14,5	cyclictest	509	-21	rs:main		1
907972	99	22	1,19	cyclictest	1126529	-21	basename	10:45:01	1
907967	99	22	18,3	cyclictest	1105832	-21	kworker/u8:2+flush-259:0	10:35:00	0
907981	99	21	18,2	cyclictest	892820	-21	kworker/u8:1+events_unbound	08:35:14	3
907981	99	21	17,3	cyclictest	954353	-21	kworker/u8:0+events_unbound	08:20:21	3
907977	99	21	5,5	cyclictest	1115341	-21	ntpq	10:30:20	2
907977	99	21	16,4	cyclictest	1067813	-21	ntpq	09:45:21	2
907977	99	21	16,3	cyclictest	949402	-21	/usr/sbin/munin	07:50:14	2
907977	99	21	11,6	cyclictest	944435	-21	diskstats	07:45:13	2
907972	99	21	16,3	cyclictest	934128	-21	diskstats	07:35:12	1
907972	99	21	16,3	cyclictest	252	-21	systemd-journal	10:01:45	1
907972	99	21	16,3	cyclictest	252	-21	systemd-journal	10:01:44	1
907972	99	21	15,3	cyclictest	1043227	-21	/usr/sbin/munin	09:25:14	1
907967	99	21	17,3	cyclictest	892820	-21	kworker/u8:1+events_unbound	08:37:07	0
907967	99	21	17,3	cyclictest	1147776	-21	kworker/u8:0+flush-259:0	11:30:22	0
907967	99	21	17,3	cyclictest	1022450	-21	kworker/u8:0+flush-259:0	10:10:18	0
907967	99	21	14,5	cyclictest	1057531	-21	ntpq	09:35:19	0
907981	99	20	17,2	cyclictest	1006416	-21	kworker/u8:2+flush-259:0	10:00:23	3
907981	99	20	17,2	cyclictest	1006416	-21	kworker/u8:2+flush-259:0	10:00:22	3
907981	99	20	16,3	cyclictest	1006416	-21	kworker/u8:2+events_unbound	08:57:47	3
907977	99	20	16,3	cyclictest	980102	-21	kworker/u8:3+flush-259:0	08:55:00	2
907977	99	20	16,3	cyclictest	1006416	-21	kworker/u8:2+flush-259:0	09:05:01	2
907977	99	20	14,5	cyclictest	252	-21	systemd-journal	08:30:00	2
907967	99	20	16,3	cyclictest	1214824	-21	kworker/u8:1+events_unbound	12:20:22	0
907981	99	19	17,2	cyclictest	980102	-21	kworker/u8:3+events_unbound	08:25:13	3
907981	99	19	16,2	cyclictest	1121332	-21	kworker/u8:1+flush-259:0	11:25:01	3
907981	99	19	15,3	cyclictest	892820	-21	kworker/u8:1+events_unbound	07:58:47	3
907981	99	19	15,3	cyclictest	1006416	-21	kworker/u8:2+events_unbound	09:10:46	3
907981	99	19	13,4	cyclictest	1137345	-21	latency_hist	10:55:00	3
907972	99	19	12,5	cyclictest	1230292	-21	latency_hist	12:25:00	1
907972	99	19	1,16	cyclictest	1	-21	systemd	10:25:01	1
907967	99	19	16,2	cyclictest	892820	-21	kworker/u8:1+flush-259:0	08:00:25	0
907967	99	19	15,3	cyclictest	954353	-21	kworker/u8:0+events_unbound	08:15:20	0
907967	99	19	15,3	cyclictest	1153155	-21	/usr/sbin/munin	11:10:23	0
907967	99	19	14,4	cyclictest	252	-21	systemd-journal	07:24:58	0
907981	99	18	16,2	cyclictest	1111019	-21	kworker/u8:4+flush-259:0	11:40:20	3
907981	99	18	15,2	cyclictest	1022405	-21	sh	09:05:01	3
907981	99	18	14,3	cyclictest	892820	-21	kworker/u8:1+events_unbound	07:41:47	3
907981	99	18	14,3	cyclictest	1147776	-21	kworker/u8:0+events_unbound	11:36:47	3
907981	99	18	14,3	cyclictest	1111019	-21	kworker/u8:4+events_unbound	11:05:16	3
907981	99	18	13,4	cyclictest	1147751	-21	latency_hist	11:05:00	3
907977	99	18	4,4	cyclictest	1125611	-21	ldconfig	10:40:21	2
907977	99	18	14,3	cyclictest	1006416	-21	kworker/u8:2+flush-259:0	09:05:16	2
907977	99	18	13,4	cyclictest	252	-21	systemd-journal	08:36:56	2
907972	99	18	15,2	cyclictest	1168434	-21	cron	11:25:01	1
907972	99	18	14,3	cyclictest	1173852	-21	apt-get	11:30:11	1
907972	99	18	14,2	cyclictest	0	-21	swapper/1	10:15:01	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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