OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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, lowest P state: ondemand
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack5slot4s.osadl.org (updated Fri May 08, 2026 00:44:15)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1555001	2	81	0,3	chrt	0	-21	swapper/2	21:11:04	2
1433273	99	65	61,3	cyclictest	1593699	-21	kworker/u8:1+events_unbound	23:30:59	1
1433273	99	64	60,3	cyclictest	1433129	-21	kworker/u8:0+events_unbound	20:05:57	1
1433273	99	62	58,3	cyclictest	1717755	-21	kworker/u8:1+events_unbound	00:06:17	1
1433273	99	62	58,3	cyclictest	1575924	-21	kworker/u8:2+events_unbound	21:31:14	1
1433273	99	61	57,3	cyclictest	1697502	-21	kworker/u8:3+events_unbound	23:36:13	1
1433273	99	61	57,3	cyclictest	1433129	-21	kworker/u8:0+events_unbound	21:55:58	1
1433273	99	61	57,3	cyclictest	1433129	-21	kworker/u8:0+events_unbound	21:26:12	1
1678671	2	60	0,1	sleep0	1678674	-21	basename	23:16:02	0
1433273	99	60	56,3	cyclictest	1433129	-21	kworker/u8:0+events_unbound	20:25:58	1
1433270	99	60	54,4	cyclictest	1717755	-21	kworker/u8:1+events_unbound	00:26:18	0
1433273	99	59	50,7	cyclictest	1548972	-21	latency_hist	21:05:01	1
1433275	99	58	49,6	cyclictest	280	-21	systemd-journal	20:05:01	2
1433273	99	58	54,3	cyclictest	609401	-21	kworker/u8:2+events_unbound	19:41:12	1
1433273	99	58	54,3	cyclictest	1433129	-21	kworker/u8:0+events_unbound	21:46:18	1
1433273	99	58	54,3	cyclictest	1433129	-21	kworker/u8:0+events_unbound	19:36:11	1
1433270	99	57	50,4	cyclictest	1534158	-21	latency_hist	20:50:01	0
1433273	99	56	52,3	cyclictest	1433129	-21	kworker/u8:0+events_unbound	20:45:03	1
1433273	99	56	48,6	cyclictest	1514464	-21	apt-get	20:30:55	1
1433273	99	56	48,5	cyclictest	1653274	-21	latency_hist	22:50:01	1
1433273	99	56	46,8	cyclictest	1721823	-21	ntpq	23:56:08	1
1433270	99	56	50,4	cyclictest	1433129	-21	kworker/u8:0+events_unbound	22:46:12	0
1433270	99	55	47,5	cyclictest	1433129	-21	kworker/u8:0+events_unbound	23:55:54	0
1433270	99	54	49,3	cyclictest	1423560	-21	kworker/u8:1+flush-8:0	19:11:15	0
1433273	99	53	50,2	cyclictest	1756744	-21	kworker/u8:0+events_unbound	00:36:16	1
1433273	99	53	49,3	cyclictest	1697502	-21	kworker/u8:3+events_unbound	23:45:58	1
1433270	99	53	48,4	cyclictest	1423560	-21	kworker/u8:1+flush-8:0	19:46:09	0
1433275	99	52	44,5	cyclictest	1722679	-40	logrotate	00:00:00	2
1433273	99	52	46,4	cyclictest	1534479	-21	apt-get	20:50:56	1
1433270	99	52	48,3	cyclictest	1423560	-21	kworker/u8:1+flush-8:0	20:06:12	0
1433273	99	51	45,4	cyclictest	1594308	-21	apt-get	21:50:56	1
1433270	99	51	46,4	cyclictest	609401	-21	kworker/u8:2+flush-8:0	20:31:12	0
1433270	99	51	45,4	cyclictest	1593699	-21	kworker/u8:1+events_unbound	22:36:18	0
1433270	99	50	45,3	cyclictest	1604140	-21	kworker/u8:2+events_unbound	22:31:12	0
1433273	99	49	40,6	cyclictest	1691920	-21	ntpq	23:26:09	1
1433270	99	49	45,3	cyclictest	1697502	-21	kworker/u8:3+events_unbound	23:51:03	0
1433270	99	49	44,3	cyclictest	609401	-21	kworker/u8:2+flush-8:0	19:16:15	0
1433270	99	49	43,4	cyclictest	1568465	-21	kworker/u8:3+flush-8:0	21:41:15	0
1433270	99	49	38,9	cyclictest	280	-21	systemd-journal	21:55:01	0
1433273	99	48	44,3	cyclictest	1593699	-21	kworker/u8:1+events_unbound	22:31:00	1
1433273	99	48	44,3	cyclictest	1433129	-21	kworker/u8:0+events_unbound	19:26:19	1
1433273	99	48	42,4	cyclictest	1742840	-21	apt-get	00:20:55	1
1433273	99	48	39,6	cyclictest	1707846	-21	latency_hist	23:45:01	1
1433270	99	48	43,4	cyclictest	1604140	-21	kworker/u8:2+flush-8:0	00:11:15	0
1433270	99	48	43,3	cyclictest	1697502	-21	kworker/u8:3+flush-8:0	23:36:10	0
1433270	99	47	43,3	cyclictest	1544064	-21	kworker/u8:1+events_unbound	21:21:11	0
1433275	99	46	40,4	cyclictest	1529247	-21	gpgv	20:45:01	2
1433273	99	46	42,3	cyclictest	1575924	-21	kworker/u8:2+events_unbound	21:37:51	1
1433273	99	46	42,3	cyclictest	1575924	-21	kworker/u8:2+events_unbound	21:37:50	1
1433270	99	46	40,4	cyclictest	1717755	-21	kworker/u8:1+events_unbound	00:40:01	0
1433270	99	46	37,7	cyclictest	280	-21	systemd-journal	23:50:01	0
1433273	99	45	41,3	cyclictest	609401	-21	kworker/u8:2+events_unbound	20:21:08	1
1433273	99	45	40,3	cyclictest	1638771	-21	apt-get	22:35:57	1
1433270	99	45	40,4	cyclictest	1433129	-21	kworker/u8:0+events_unbound	22:26:13	0
1433270	99	45	40,3	cyclictest	1593699	-21	kworker/u8:1+events_unbound	23:15:00	0
1433273	99	44	40,3	cyclictest	1604140	-21	kworker/u8:2+events_unbound	23:03:55	1
1433273	99	44	40,3	cyclictest	1433129	-21	kworker/u8:0+events_unbound	21:40:57	1
1433270	99	44	40,3	cyclictest	1604140	-21	kworker/u8:2+events_unbound	22:06:13	0
1433270	99	44	39,3	cyclictest	1449097	-21	ntpq	19:21:10	0
1433270	99	44	39,3	cyclictest	1449097	-21	ntpq	19:21:10	0
1433270	99	44	35,6	cyclictest	1479597	-21	latency_hist	19:55:01	0
1433273	99	43	40,2	cyclictest	1604140	-21	kworker/u8:2+events_unbound	00:02:56	1
1433273	99	43	39,3	cyclictest	1604140	-21	kworker/u8:2+events_unbound	23:24:03	1
1433273	99	43	39,3	cyclictest	1604140	-21	kworker/u8:2+events_unbound	23:24:03	1
1433273	99	43	39,3	cyclictest	1604140	-21	kworker/u8:2+events_unbound	00:14:14	1
1433273	99	43	39,3	cyclictest	1433129	-21	kworker/u8:0+events_unbound	21:21:00	1
1433273	99	43	39,3	cyclictest	1433129	-21	kworker/u8:0+events_unbound	20:40:59	1
1433273	99	43	36,5	cyclictest	280	-21	systemd-journal	20:13:49	1
1433273	99	42	38,3	cyclictest	609401	-21	kworker/u8:2+events_unbound	19:30:02	1
1433273	99	42	38,3	cyclictest	1756744	-21	kworker/u8:0+events_unbound	00:32:55	1
1433273	99	42	38,3	cyclictest	1433129	-21	kworker/u8:0+events_unbound	22:13:49	1
1433270	99	42	38,3	cyclictest	1604140	-21	kworker/u8:2+events_unbound	22:56:18	0
1433270	99	42	37,4	cyclictest	1433129	-21	kworker/u8:0+flush-8:0	21:11:15	0
1433270	99	42	36,4	cyclictest	1433129	-21	kworker/u8:0+events_unbound	19:56:12	0
1433270	99	42	31,8	cyclictest	1539093	-21	latency_hist	20:55:01	0
1433273	99	41	37,3	cyclictest	1604140	-21	kworker/u8:2+events_unbound	23:19:55	1
1433273	99	41	37,3	cyclictest	1593699	-21	kworker/u8:1+events_unbound	22:56:02	1
1433270	99	41	37,3	cyclictest	1433129	-21	kworker/u8:0+flush-8:0	21:06:15	0
1433270	99	41	37,3	cyclictest	1433129	-21	kworker/u8:0+flush-8:0	21:06:14	0
1433270	99	41	34,5	cyclictest	1575924	-21	kworker/u8:2+flush-8:0	21:31:11	0
1433270	99	41	32,6	cyclictest	1648319	-21	latency_hist	22:45:01	0
1433273	99	40	36,3	cyclictest	1433129	-21	kworker/u8:0+events_unbound	20:38:49	1
1433270	99	40	36,3	cyclictest	1593699	-21	kworker/u8:1+events_unbound	22:51:13	0
1433270	99	40	36,3	cyclictest	1433129	-21	kworker/u8:0+flush-8:0	19:26:16	0
1433270	99	40	35,3	cyclictest	1604140	-21	kworker/u8:2+flush-8:0	00:01:17	0
1433270	99	40	33,5	cyclictest	1604140	-21	kworker/u8:2+flush-8:0	22:11:09	0
1433270	99	40	31,4	cyclictest	1604140	-21	kworker/u8:2+events_unbound	23:31:15	0
1433273	99	39	35,3	cyclictest	1697502	-21	kworker/u8:3+events_unbound	23:50:54	1
1433270	99	39	33,4	cyclictest	609401	-21	kworker/u8:2+flush-8:0	19:41:15	0
1433270	99	39	33,4	cyclictest	1604140	-21	kworker/u8:2+flush-8:0	22:01:08	0
1433270	99	39	33,4	cyclictest	1433129	-21	kworker/u8:0+events_unbound	19:36:00	0
1433275	99	38	31,5	cyclictest	1702905	-21	cp	23:40:01	2
1433275	99	38	31,5	cyclictest	1598942	-21	awk	21:55:00	2
1433273	99	38	34,3	cyclictest	609401	-21	kworker/u8:2+events_unbound	20:18:18	1
1433273	99	38	34,3	cyclictest	609401	-21	kworker/u8:2+events_unbound	19:16:21	1
1433273	99	38	34,3	cyclictest	609401	-21	kworker/u8:2+events_unbound	19:12:37	1
1433273	99	38	34,3	cyclictest	1433129	-21	kworker/u8:0+events_unbound	21:08:51	1
1433273	99	38	34,3	cyclictest	1433129	-21	kworker/u8:0+events_unbound	21:08:51	1
1433273	99	38	34,3	cyclictest	1433129	-21	kworker/u8:0+events_unbound	19:48:27	1
1433273	99	38	32,4	cyclictest	1737884	-21	apt-get	00:15:55	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17