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 Tue May 05, 2026 00:44:05)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
638341	99	41	34,5	cyclictest	700275	-21	latency_hist	20:10:01	1
638341	99	40	36,3	cyclictest	939366	-21	kworker/u8:1+events_unbound	00:26:23	1
638341	99	40	36,3	cyclictest	939366	-21	kworker/u8:1+events_unbound	00:26:22	1
638341	99	38	32,3	cyclictest	830050	-21	kworker/u8:1+flush-259:0	22:30:16	1
638341	99	37	32,3	cyclictest	763984	-21	kworker/u8:1+flush-259:0	21:35:24	1
638344	99	33	27,4	cyclictest	939373	-21	cp	00:00:00	2
638339	99	33	29,3	cyclictest	252	-21	systemd-journal	20:56:21	0
638341	99	32	29,2	cyclictest	939366	-21	kworker/u8:1+flush-259:0	00:35:24	1
638341	99	32	25,5	cyclictest	870594	-21	ntpq	22:50:24	1
638339	99	32	28,3	cyclictest	851074	-21	apt-get	22:35:10	0
638344	99	30	24,4	cyclictest	252	-21	systemd-journal	00:30:21	2
638339	99	30	24,4	cyclictest	741289	-21	ntpq	20:45:22	0
638341	99	29	25,3	cyclictest	793405	-21	kworker/u8:3+flush-259:0	22:05:22	1
638341	99	29	23,4	cyclictest	793978	-21	apt-get	21:40:12	1
638344	99	28	24,3	cyclictest	939366	-21	kworker/u8:1+flush-259:0	00:35:15	2
638341	99	28	25,2	cyclictest	928868	-21	kworker/u8:0+flush-259:0	23:55:20	1
638341	99	28	25,2	cyclictest	685045	-21	kworker/u8:1+events_unbound	20:00:25	1
638341	99	28	24,3	cyclictest	928868	-21	kworker/u8:0+events_unbound	00:00:14	1
638341	99	28	24,3	cyclictest	830050	-21	kworker/u8:1+events_unbound	23:05:25	1
638341	99	28	24,3	cyclictest	793405	-21	kworker/u8:3+flush-259:0	22:00:00	1
638341	99	28	22,4	cyclictest	787658	-21	ntpq	21:30:21	1
638349	99	27	22,4	cyclictest	882276	-21	gpgv	23:05:01	3
638344	99	27	20,5	cyclictest	767057	-21	ntpq	21:10:21	2
638341	99	27	23,3	cyclictest	939366	-21	kworker/u8:1+events_unbound	00:34:21	1
638341	99	27	23,3	cyclictest	892513	-21	kworker/u8:4+events_unbound	23:34:23	1
638341	99	27	23,3	cyclictest	763984	-21	kworker/u8:1+flush-259:0	21:20:21	1
638341	99	27	23,2	cyclictest	669540	-21	kworker/u8:2+events_unbound	20:15:23	1
638341	99	27	21,4	cyclictest	949960	-21	/usr/sbin/munin	00:10:13	1
638339	99	27	22,4	cyclictest	861375	-21	apt-get	22:45:11	0
638341	99	26	22,3	cyclictest	944853	-21	apt-get	00:05:16	1
638341	99	26	22,3	cyclictest	830050	-21	kworker/u8:1+flush-259:0	22:22:21	1
638341	99	26	22,3	cyclictest	746920	-21	kworker/u8:2+events_unbound	21:10:15	1
638341	99	26	22,3	cyclictest	685045	-21	kworker/u8:1+events_unbound	20:13:22	1
638341	99	26	20,4	cyclictest	861120	-21	latency_hist	22:45:01	1
638339	99	26	23,2	cyclictest	861342	-21	kworker/u8:3+events_unbound	23:00:01	0
638344	99	25	19,4	cyclictest	252	-21	systemd-journal	22:37:06	2
638341	99	25	23,1	cyclictest	830050	-21	kworker/u8:1+events_unbound	22:55:12	1
638341	99	25	22,2	cyclictest	850836	-21	kworker/u8:0+flush-259:0	22:35:21	1
638339	99	25	21,3	cyclictest	773354	-21	apt-get	21:20:11	0
638339	99	25	19,4	cyclictest	975764	-21	apt-get	00:35:12	0
638344	99	24	19,3	cyclictest	871436	-21	kworker/u8:2+flush-259:0	23:05:18	2
638341	99	24	21,2	cyclictest	763984	-21	kworker/u8:1+events_unbound	21:51:48	1
638341	99	24	21,2	cyclictest	711308	-21	kworker/u8:3+events_unbound	21:06:39	1
638341	99	24	18,4	cyclictest	252	-21	systemd-journal	23:11:21	1
638339	99	24	19,4	cyclictest	747301	-21	latency_hist	20:55:01	0
638349	99	23	20,2	cyclictest	674748	-21	apt-get	19:45:11	3
638349	99	23	20,2	cyclictest	674748	-21	apt-get	19:45:10	3
638349	99	23	19,3	cyclictest	710770	-21	gpgv	20:20:01	3
638349	99	23	18,4	cyclictest	928868	-21	kworker/u8:0+flush-259:0	00:00:00	3
638349	99	23	16,5	cyclictest	773091	-21	latency_hist	21:20:00	3
638344	99	23	17,4	cyclictest	840268	-21	base64	22:25:00	2
638341	99	23	20,2	cyclictest	799135	-21	/usr/sbin/munin	21:45:19	1
638339	99	23	19,2	cyclictest	892513	-21	kworker/u8:4+flush-259:0	23:30:24	0
638349	99	22	19,2	cyclictest	2971	-21	cron	00:25:01	3
638349	99	22	17,4	cyclictest	699381	-21	ntpq	20:05:21	3
638349	99	22	17,3	cyclictest	893158	-21	apt-get	23:15:11	3
638344	99	22	19,2	cyclictest	618055	-21	kworker/u8:1+flush-259:0	19:10:16	2
638344	99	22	16,4	cyclictest	866277	-21	latency_hist	22:50:01	2
638341	99	22	19,2	cyclictest	871436	-21	kworker/u8:2+events_unbound	23:46:21	1
638341	99	22	19,2	cyclictest	669540	-21	kworker/u8:2+events_unbound	19:40:22	1
638341	99	22	19,2	cyclictest	653827	-21	kworker/u8:0+flush-259:0	19:55:12	1
638341	99	22	19,2	cyclictest	618055	-21	kworker/u8:1+events_unbound	19:33:23	1
638341	99	22	18,3	cyclictest	830047	-21	apt-get	22:15:10	1
638341	99	22	18,3	cyclictest	690175	-21	kworker/u8:4+events_unbound	20:28:23	1
638339	99	22	18,3	cyclictest	746920	-21	kworker/u8:2+flush-259:0	21:00:20	0
638341	99	21	18,2	cyclictest	763984	-21	kworker/u8:1+events_unbound	21:28:21	1
638341	99	21	18,2	cyclictest	757648	-21	kworker/u8:0+flush-259:0	21:15:24	1
638341	99	21	17,3	cyclictest	892513	-21	kworker/u8:4+events_unbound	23:38:24	1
638341	99	21	17,2	cyclictest	898319	-21	kworker/u8:0+events_unbound	23:20:21	1
638339	99	21	17,3	cyclictest	763984	-21	kworker/u8:1+flush-259:0	22:00:26	0
638339	99	21	17,3	cyclictest	690175	-21	kworker/u8:4+flush-259:0	20:30:21	0
638349	99	20	16,3	cyclictest	648382	-21	kworker/u8:2+flush-259:0	19:25:24	3
638344	99	20	17,2	cyclictest	669540	-21	kworker/u8:2+events_unbound	19:45:00	2
638344	99	20	15,4	cyclictest	876812	-21	/usr/sbin/munin	23:00:20	2
638341	99	20	17,2	cyclictest	892513	-21	kworker/u8:4+events_unbound	00:15:23	1
638341	99	20	16,3	cyclictest	653827	-21	kworker/u8:0+events_unbound	19:35:22	1
638341	99	20	14,4	cyclictest	881914	-21	gpgv	23:05:01	1
638349	99	19	15,3	cyclictest	892890	-21	gpgv	23:15:02	3
638349	99	19	15,3	cyclictest	830050	-21	kworker/u8:1+flush-259:0	22:50:26	3
638349	99	19	13,4	cyclictest	829784	-21	latency_hist	22:15:00	3
638349	99	19	13,4	cyclictest	673568	-21	ntpq	19:40:20	3
638344	99	19	16,2	cyclictest	845672	-21	sh	22:30:00	2
638344	99	19	12,5	cyclictest	725707	-21	ntpq	20:30:20	2
638341	99	19	15,3	cyclictest	618055	-21	kworker/u8:1+events_unbound	19:14:22	1
638339	99	19	15,3	cyclictest	928868	-21	kworker/u8:0+flush-259:0	00:15:17	0
638349	99	18	15,2	cyclictest	919378	-21	irqcore	23:40:15	3
638349	99	18	13,3	cyclictest	252	-21	systemd-journal	20:29:20	3
638344	99	18	15,2	cyclictest	850813	-21	sh	22:35:00	2
638344	99	18	14,3	cyclictest	819175	-21	kworker/u8:2+flush-259:0	22:40:14	2
638344	99	18	13,3	cyclictest	763984	-21	kworker/u8:1+flush-259:0	21:20:16	2
638344	99	18	12,4	cyclictest	943670	-21	ntpq	00:00:21	2
638341	99	18	15,2	cyclictest	711308	-21	kworker/u8:3+flush-259:0	20:40:21	1
638341	99	18	15,2	cyclictest	618055	-21	kworker/u8:1+events_unbound	19:15:16	1
638341	99	18	14,3	cyclictest	830050	-21	kworker/u8:1+flush-259:0	23:15:19	1
638341	99	18	14,3	cyclictest	618055	-21	kworker/u8:1+events_unbound	19:26:23	1
638339	99	18	12,5	cyclictest	809645	-21	diskstats	21:55:14	0
638339	99	18	11,4	cyclictest	252	-21	systemd-journal	23:50:21	0
638349	99	17	13,2	cyclictest	793405	-21	kworker/u8:3+flush-259:0	21:40:17	3
638344	99	17	13,3	cyclictest	809484	-21	apt-get	21:55:11	2
638344	99	17	11,4	cyclictest	509	-21	rs:main		2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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