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 all highest latencies:

System rackeslot4s.osadl.org (updated Fri Apr 10, 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
279779	99	47	43,3	cyclictest	250252	-21	kworker/u8:3+flush-259:0	19:15:00	1
279777	99	46	43,2	cyclictest	367474	-21	kworker/u8:2+flush-259:0	20:35:17	0
279779	99	44	41,2	cyclictest	480257	-21	kworker/u8:3+flush-259:0	22:40:00	1
279779	99	43	40,2	cyclictest	502453	-21	kworker/u8:3+events_unbound	23:15:25	1
279779	99	42	38,3	cyclictest	543816	-21	kworker/u8:0+flush-259:0	00:15:15	1
279779	99	41	38,2	cyclictest	361706	-21	kworker/u8:4+flush-259:0	20:55:18	1
279779	99	41	35,4	cyclictest	507617	-21	/usr/sbin/munin	22:50:15	1
279779	99	40	36,3	cyclictest	486557	-21	kworker/u8:0+flush-259:0	22:35:00	1
279779	99	40	36,3	cyclictest	429669	-21	kworker/u8:1+events_unbound	21:50:13	1
279779	99	40	35,3	cyclictest	429669	-21	kworker/u8:1+events_unbound	22:10:00	1
279787	99	39	33,4	cyclictest	558979	-21	apt-get	23:39:59	3
279782	99	39	35,3	cyclictest	252	-21	systemd-journal	22:55:00	2
279782	99	38	32,4	cyclictest	559000	-21	https	23:40:00	2
279782	99	37	32,3	cyclictest	252	-21	systemd-journal	20:04:10	2
279779	99	37	34,2	cyclictest	388500	-21	kworker/u8:1+events_unbound	21:05:13	1
279787	99	36	31,3	cyclictest	285456	-21	kworker/u8:1+flush-259:0	19:25:15	3
279779	99	36	32,2	cyclictest	351665	-21	kworker/u8:1+flush-259:0	20:40:00	1
279779	99	36	31,4	cyclictest	285456	-21	kworker/u8:1+flush-259:0	20:05:00	1
279779	99	36	30,5	cyclictest	377970	-21	/usr/sbin/munin	20:45:14	1
279777	99	36	31,4	cyclictest	471154	-21	apt-get	22:15:13	0
279779	99	35	32,2	cyclictest	553683	-21	kworker/u8:2+flush-259:0	23:50:25	1
279787	99	34	28,4	cyclictest	252	-21	systemd-journal	22:05:01	3
279787	99	34	28,4	cyclictest	252	-21	systemd-journal	22:05:00	3
279779	99	34	31,2	cyclictest	543816	-21	kworker/u8:0+flush-259:0	00:20:27	1
279779	99	34	30,3	cyclictest	409085	-21	kworker/u8:2+flush-259:0	21:35:20	1
279779	99	33	30,2	cyclictest	502453	-21	kworker/u8:3+flush-259:0	22:45:17	1
279779	99	33	30,2	cyclictest	455502	-21	kworker/u8:2+events_unbound	22:20:23	1
279779	99	33	30,2	cyclictest	331027	-21	kworker/u8:0+flush-259:0	20:10:22	1
279779	99	33	29,3	cyclictest	528119	-21	kworker/u8:2+events_unbound	23:20:13	1
279779	99	33	26,2	cyclictest	543816	-21	kworker/u8:0+events_unbound	00:00:22	1
279779	99	32	29,2	cyclictest	517724	-21	kworker/u8:1+events_unbound	23:25:21	1
279779	99	32	27,3	cyclictest	253674	-21	kworker/u8:4+events_unbound	19:15:13	1
279779	99	31	28,2	cyclictest	409085	-21	kworker/u8:2+events_unbound	21:20:14	1
279779	99	31	28,2	cyclictest	367474	-21	kworker/u8:2+events_unbound	20:50:22	1
279779	99	31	27,2	cyclictest	590676	-21	kworker/u8:1+events_unbound	00:25:18	1
279777	99	31	27,3	cyclictest	543852	-21	apt-get	23:25:14	0
279787	99	30	23,5	cyclictest	585308	-21	latency_hist	00:05:00	3
279779	99	30	26,3	cyclictest	444729	-21	kworker/u8:4+events_unbound	21:55:23	1
279779	99	30	26,3	cyclictest	361706	-21	kworker/u8:4+flush-259:0	21:10:21	1
279779	99	30	26,3	cyclictest	253674	-21	kworker/u8:4+events_unbound	19:50:22	1
279779	99	30	25,3	cyclictest	252	-21	systemd-journal	20:05:10	1
279787	99	29	23,4	cyclictest	331027	-21	kworker/u8:0+flush-259:0	20:10:14	3
279782	99	29	18,5	cyclictest	252	-21	systemd-journal	19:30:00	2
279779	99	29	26,2	cyclictest	429669	-21	kworker/u8:1+events_unbound	21:45:20	1
279779	99	29	26,2	cyclictest	285456	-21	kworker/u8:1+flush-259:0	19:25:24	1
279779	99	29	25,3	cyclictest	543816	-21	kworker/u8:0+flush-259:0	00:30:24	1
279779	99	29	23,4	cyclictest	435237	-21	diskstats	21:40:14	1
279787	99	28	22,4	cyclictest	429669	-21	kworker/u8:1+flush-259:0	22:40:16	3
279779	99	28	25,2	cyclictest	331027	-21	kworker/u8:0+flush-259:0	20:15:24	1
279779	99	28	25,2	cyclictest	250252	-21	kworker/u8:3+events_unbound	19:30:20	1
279779	99	28	24,2	cyclictest	331027	-21	kworker/u8:0+events_unbound	20:25:22	1
279777	99	28	21,5	cyclictest	252	-21	systemd-journal	21:27:13	0
279787	99	27	22,3	cyclictest	252	-21	systemd-journal	22:46:12	3
279779	99	27	24,2	cyclictest	543816	-21	kworker/u8:0+events_unbound	00:35:19	1
279779	99	27	23,3	cyclictest	517724	-21	kworker/u8:1+flush-259:0	23:10:16	1
279779	99	27	23,3	cyclictest	361706	-21	kworker/u8:4+events_unbound	20:40:46	1
279777	99	27	23,3	cyclictest	253674	-21	kworker/u8:4+flush-259:0	19:50:15	0
279787	99	26	23,2	cyclictest	429669	-21	kworker/u8:1+flush-259:0	22:20:17	3
279782	99	26	23,2	cyclictest	419554	-21	kworker/u8:3+flush-259:0	21:45:00	2
279779	99	26	23,2	cyclictest	346396	-21	kworker/u8:3+flush-259:0	20:21:38	1
279777	99	26	19,4	cyclictest	252	-21	systemd-journal	19:13:06	0
279787	99	25	18,5	cyclictest	362202	-21	latency_hist	20:30:01	3
279782	99	25	20,4	cyclictest	501792	-21	latency_hist	22:45:01	2
279779	99	25	21,3	cyclictest	250252	-21	kworker/u8:3+events_unbound	19:55:18	1
279777	99	25	21,3	cyclictest	469990	-21	kworker/u8:0+flush-259:0	22:15:00	0
279777	99	25	21,2	cyclictest	429669	-21	kworker/u8:1+events_unbound	22:40:14	0
279777	99	25	20,4	cyclictest	429669	-21	kworker/u8:1+events_unbound	21:35:14	0
279777	99	25	20,4	cyclictest	331276	-21	latency_hist	20:00:01	0
279777	99	25	20,3	cyclictest	253674	-21	kworker/u8:4+flush-259:0	19:35:17	0
279787	99	24	20,3	cyclictest	351665	-21	kworker/u8:1+flush-259:0	20:45:17	3
279787	99	24	18,4	cyclictest	601491	-21	apt-get	00:20:14	3
279782	99	24	18,4	cyclictest	377732	-21	latency_hist	20:45:01	2
279779	99	24	20,3	cyclictest	502453	-21	kworker/u8:3+flush-259:0	23:30:16	1
279779	99	24	20,3	cyclictest	496904	-21	apt-get	22:40:11	1
279779	99	24	18,4	cyclictest	398729	-21	latency_hist	21:05:01	1
279787	99	23	17,4	cyclictest	252	-21	systemd-journal	00:10:14	3
279782	99	23	19,2	cyclictest	429669	-21	kworker/u8:1+flush-259:0	21:35:00	2
279779	99	23	20,2	cyclictest	351665	-21	kworker/u8:1+flush-259:0	20:30:24	1
279779	99	23	19,3	cyclictest	285456	-21	kworker/u8:1+flush-259:0	19:20:14	1
279779	99	23	18,4	cyclictest	285456	-21	kworker/u8:1+events_unbound	19:37:39	1
279779	99	23	16,5	cyclictest	516816	-21	ntpq	22:55:19	1
279777	99	23	19,3	cyclictest	496666	-21	kworker/u8:4+events_unbound	23:00:20	0
279777	99	23	16,5	cyclictest	383057	-21	cat	20:50:01	0
279782	99	22	18,3	cyclictest	397857	-21	kworker/u8:0+flush-259:0	21:10:27	2
279779	99	22	19,2	cyclictest	559011	-21	kworker/u8:3+events_unbound	23:57:15	1
279779	99	22	19,2	cyclictest	250252	-21	kworker/u8:3+flush-259:0	19:40:17	1
279779	99	22	18,2	cyclictest	590676	-21	kworker/u8:1+events_unbound	00:10:17	1
279779	99	22	18,2	cyclictest	397857	-21	kworker/u8:0+events_unbound	21:25:15	1
279777	99	22	18,3	cyclictest	543816	-21	kworker/u8:0+flush-259:0	23:45:15	0
279777	99	22	17,4	cyclictest	285456	-21	kworker/u8:1+events_unbound	19:45:18	0
279787	99	21	17,3	cyclictest	361706	-21	kworker/u8:4+flush-259:0	20:35:00	3
279787	99	21	17,3	cyclictest	253674	-21	kworker/u8:4+flush-259:0	19:10:23	3
279787	99	21	15,4	cyclictest	455475	-21	latency_hist	22:00:00	3
279779	99	21	18,2	cyclictest	469990	-21	kworker/u8:0+events_unbound	22:15:19	1
279779	99	21	17,3	cyclictest	543816	-21	kworker/u8:0+events_unbound	00:08:37	1
279779	99	21	16,4	cyclictest	429669	-21	kworker/u8:1+events_unbound	22:13:12	1
279777	99	21	18,2	cyclictest	543816	-21	kworker/u8:0+events_unbound	00:05:24	0
279777	99	21	17,3	cyclictest	590676	-21	kworker/u8:1+flush-259:0	00:10:16	0
279777	99	21	17,3	cyclictest	553683	-21	kworker/u8:2+flush-259:0	23:40:15	0
279777	99	21	17,3	cyclictest	388500	-21	kworker/u8:1+events_unbound	21:05:15	0
279787	99	20	16,3	cyclictest	300617	-21	apt-get	19:30:13	3
279787	99	20	15,3	cyclictest	601005	-21	gpgv	00:20:00	3
279782	99	20	16,3	cyclictest	250252	-21	kworker/u8:3+flush-259:0	19:55:25	2
279779	99	20	17,2	cyclictest	543816	-21	kworker/u8:0+flush-259:0	23:45:18	1
279779	99	20	17,2	cyclictest	419554	-21	kworker/u8:3+events_unbound	21:34:13	1
279777	99	20	16,3	cyclictest	543816	-21	kworker/u8:0+flush-259:0	00:30:21	0
279777	99	20	15,3	cyclictest	517724	-21	kworker/u8:1+flush-259:0	23:20:21	0
279777	99	20	15,3	cyclictest	312753	-21	kworker/u8:2+flush-259:0	19:40:22	0
279787	99	19	15,2	cyclictest	0	-21	swapper/3	22:20:00	3
279787	99	19	13,5	cyclictest	616970	-21	apt-get	00:35:10	3
279779	99	19	16,2	cyclictest	455502	-21	kworker/u8:2+flush-259:0	22:25:15	1
279777	99	19	16,2	cyclictest	580051	-21	sh	23:59:59	0
279777	99	19	15,3	cyclictest	543816	-21	kworker/u8:0+events_unbound	23:35:12	0
279777	99	19	15,3	cyclictest	361706	-21	kworker/u8:4+events_unbound	20:30:17	0
279777	99	19	14,4	cyclictest	502453	-21	kworker/u8:3+flush-259:0	23:15:01	0
279787	99	18	14,3	cyclictest	543816	-21	kworker/u8:0+flush-259:0	23:45:26	3
279782	99	18	14,3	cyclictest	351665	-21	kworker/u8:1+events_unbound	20:30:15	2
279779	99	18	15,2	cyclictest	361706	-21	kworker/u8:4+flush-259:0	21:15:26	1
279777	99	18	14,3	cyclictest	469990	-21	kworker/u8:0+events_unbound	22:20:15	0
279777	99	18	14,3	cyclictest	409085	-21	kworker/u8:2+flush-259:0	21:20:19	0
279777	99	18	13,3	cyclictest	450293	-21	turbostat	21:55:00	0
279777	99	18	12,4	cyclictest	398725	-21	awk	21:05:01	0
279777	99	18	0,17	cyclictest	621912	-21	unin-run	00:40:00	0
279787	99	17	14,2	cyclictest	336463	-21	idleruntime-cro	20:05:00	3
279787	99	17	12,4	cyclictest	486557	-21	kworker/u8:0+flush-259:0	22:30:16	3
279782	99	17	14,2	cyclictest	331027	-21	kworker/u8:0+flush-259:0	20:10:23	2
279782	99	17	13,3	cyclictest	543816	-21	kworker/u8:0+flush-259:0	23:55:25	2
279782	99	17	13,3	cyclictest	502453	-21	kworker/u8:3+flush-259:0	23:05:24	2
279782	99	17	13,3	cyclictest	250252	-21	kworker/u8:3+events_unbound	19:35:01	2
279779	99	17	14,2	cyclictest	543816	-21	kworker/u8:0+events_unbound	23:35:02	1
279777	99	17	14,2	cyclictest	603	50	irq/132-enp0s29f1:rx-0	00:20:16	0
279777	99	17	13,3	cyclictest	528119	-21	kworker/u8:2+events_unbound	23:15:17	0
279777	99	17	13,3	cyclictest	502453	-21	kworker/u8:3+flush-259:0	22:45:21	0
279777	99	17	13,3	cyclictest	285456	-21	kworker/u8:1+events_unbound	19:25:14	0
279777	99	17	13,2	cyclictest	342272	-21	irqcore	20:10:14	0
279777	99	17	10,5	cyclictest	285456	-21	kworker/u8:1+flush-259:0	20:00:15	0
279787	99	16	11,4	cyclictest	548939	-21	/usr/sbin/munin	23:30:19	3
279782	99	16	12,2	cyclictest	0	-21	swapper/2	23:00:00	2
279779	99	16	13,2	cyclictest	502453	-21	kworker/u8:3+events_unbound	23:02:15	1
279779	99	16	13,2	cyclictest	444729	-21	kworker/u8:4+events_unbound	22:00:19	1
279779	99	16	13,2	cyclictest	444729	-21	kworker/u8:4+events_unbound	22:00:19	1
279779	99	16	13,2	cyclictest	285456	-21	kworker/u8:1+events_unbound	19:45:15	1
279777	99	16	14,1	cyclictest	429669	-21	kworker/u8:1+events_unbound	22:00:23	0
279777	99	16	14,1	cyclictest	429669	-21	kworker/u8:1+events_unbound	22:00:23	0
279777	99	16	13,2	cyclictest	603	50	irq/132-enp0s29f1:rx-0	21:43:58	0
279777	99	16	13,2	cyclictest	361706	-21	kworker/u8:4+flush-259:0	20:40:23	0
279777	99	16	12,3	cyclictest	502453	-21	kworker/u8:3+events_unbound	23:05:20	0
279777	99	16	12,2	cyclictest	603	50	irq/132-enp0s29f1:rx-0	23:30:20	0
279787	99	15	12,2	cyclictest	543816	-21	kworker/u8:0+flush-259:0	23:50:15	3
279787	99	15	12,2	cyclictest	466015	-21	apt-get	22:10:11	3
279787	99	15	10,3	cyclictest	509	-21	rs:main		3
279782	99	15	9,4	cyclictest	569726	-21	latency_hist	23:50:00	2
279782	99	15	12,2	cyclictest	0	-21	swapper/2	23:30:00	2
279782	99	15	12,2	cyclictest	0	-21	swapper/2	00:20:00	2
279782	99	15	11,3	cyclictest	455502	-21	kworker/u8:2+flush-259:0	22:25:01	2
279782	99	15	11,3	cyclictest	253674	-21	kworker/u8:4+flush-259:0	19:40:16	2
279782	99	15	11,2	cyclictest	0	-21	swapper/2	23:15:18	2
279777	99	15	13,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	21:30:22	0
279777	99	15	13,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	19:30:21	0
279777	99	15	13,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	00:00:25	0
279777	99	15	12,2	cyclictest	603	50	irq/132-enp0s29f1:rx-0	21:55:20	0
279777	99	15	12,2	cyclictest	603	50	irq/132-enp0s29f1:rx-0	20:58:07	0
279777	99	15	12,2	cyclictest	367474	-21	kworker/u8:2+flush-259:0	20:50:16	0
279777	99	15	11,3	cyclictest	480257	-21	kworker/u8:3+flush-259:0	22:25:25	0
279787	99	14	7,5	cyclictest	294281	-21	ntpq	19:20:20	3
279787	99	14	11,2	cyclictest	575552	-21	irqcore	23:55:15	3
279782	99	14	10,3	cyclictest	361706	-21	kworker/u8:4+flush-259:0	20:55:25	2
279782	99	14	10,3	cyclictest	250252	-21	kworker/u8:3+flush-259:0	19:10:25	2
279779	99	14	10,3	cyclictest	553683	-21	kworker/u8:2+flush-259:0	23:41:24	1
279777	99	14	9,4	cyclictest	361706	-21	kworker/u8:4+events_unbound	21:10:20	0
279777	99	14	12,2	cyclictest	603	50	irq/132-enp0s29f1:rx-0	23:52:14	0
279777	99	14	12,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	21:45:15	0
279777	99	14	12,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	20:25:16	0
279777	99	14	10,3	cyclictest	502453	-21	kworker/u8:3+flush-259:0	22:55:22	0
279777	99	14	10,3	cyclictest	455502	-21	kworker/u8:2+flush-259:0	22:35:21	0
279777	99	14	10,3	cyclictest	285456	-21	kworker/u8:1+flush-259:0	19:20:24	0
279787	99	13	10,2	cyclictest	517692	-21	idleruntime-cro	23:00:00	3
279782	99	13	9,2	cyclictest	0	-21	swapper/2	23:25:00	2
279782	99	13	7,4	cyclictest	252	-21	systemd-journal	19:50:00	2
279782	99	13	10,2	cyclictest	590676	-21	kworker/u8:1+flush-259:0	00:10:21	2
279777	99	13	10,2	cyclictest	603	50	irq/132-enp0s29f1:rx-0	22:31:33	0
279787	99	12	9,2	cyclictest	0	-21	swapper/3	19:15:17	3
279782	99	12	9,2	cyclictest	589440	-21	needreboot	00:05:19	2
279782	99	12	6,4	cyclictest	490848	-21	expr	22:30:25	2
279782	99	12	5,5	cyclictest	513	-21	gdbus	21:50:00	2
279782	99	12	10,1	cyclictest	471568	-21	grep	22:15:17	2
279782	99	12	0,2	cyclictest	414210	-21	awk	21:20:00	2
279777	99	12	8,3	cyclictest	543816	-21	kworker/u8:0+flush-259:0	00:25:25	0
279782	99	11	9,1	cyclictest	0	-21	swapper/2	00:30:00	2
279782	99	11	9,1	cyclictest	0	-21	swapper/2	00:25:01	2
279782	99	11	8,2	cyclictest	433845	-21	grep	21:35:19	2
279782	99	11	8,2	cyclictest	361706	-21	kworker/u8:4+flush-259:0	21:00:21	2
279782	99	11	8,2	cyclictest	347271	-21	fschecks_time	20:15:15	2
279782	99	11	8,2	cyclictest	0	-21	swapper/2	19:25:00	2
279782	99	11	7,3	cyclictest	543816	-21	kworker/u8:0+flush-259:0	00:30:30	2
279782	99	11	7,3	cyclictest	444729	-21	kworker/u8:4+flush-259:0	21:55:26	2
279782	99	11	7,2	cyclictest	423672	-21	ntpq	21:25:22	2
279782	99	11	5,4	cyclictest	402821	-21	memory	21:05:18	2
279782	99	11	1,2	cyclictest	522939	-21	latency_hist	23:05:02	2
279787	99	10	8,1	cyclictest	0	-21	swapper/3	20:20:14	3
279787	99	10	7,2	cyclictest	434003	-21	nvmesmart_nvme0	21:35:22	3
279782	99	10	8,1	cyclictest	0	-21	swapper/2	23:30:21	2
279782	99	10	7,2	cyclictest	455943	-21	fschecks_count	22:00:15	2
279782	99	10	7,2	cyclictest	455943	-21	fschecks_count	22:00:15	2
279782	99	10	7,1	cyclictest	0	-21	swapper/2	21:50:17	2
279782	99	10	6,3	cyclictest	584296	2	sleep2	00:00:21	2
279782	99	10	6,2	cyclictest	0	-21	swapper/2	22:10:23	2
279782	99	9	6,2	cyclictest	502661	-21	fschecks_count	22:45:17	2
279782	99	9	5,2	cyclictest	289158	-21	ntpq	19:15:21	2
279782	99	9	4,3	cyclictest	415722	-21	tr	21:20:19	2
279782	99	9	4,3	cyclictest	273	-21	systemd-udevd	20:22:19	2
279782	99	8	5,2	cyclictest	563590	-21	cut	23:40:20	2
279782	99	8	5,2	cyclictest	323697	-21	kthreadcore	19:50:16	2
279782	99	8	3,3	cyclictest	481981	-21	cut	22:25:17	2
279782	99	7	5,1	cyclictest	0	-21	swapper/2	20:35:19	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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