OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, 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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack0slot4s.osadl.org (updated Sun Aug 23, 2026 00:45:12)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1155721	99	79	77,2	cyclictest	1210823	-21	kworker/u32:3+events_unbound	20:30:17	0
1155756	99	62	60,1	cyclictest	1293580	-21	kworker/u32:6+events_unbound	21:40:23	2
1155727	99	59	56,2	cyclictest	1272863	-21	kworker/u32:4+flush-259:0	21:46:55	8
1155756	99	58	54,3	cyclictest	1293580	-21	kworker/u32:6+events_unbound	22:54:38	2
1155766	99	57	55,2	cyclictest	1421688	-21	kworker/u32:3+events_unbound	23:20:00	5
1155760	99	57	55,2	cyclictest	1449926	-21	kworker/u32:4+flush-259:0	00:00:21	3
1155756	99	52	49,2	cyclictest	1210823	-21	kworker/u32:3+events_unbound	20:23:35	2
1155721	99	50	0,50	cyclictest	1769	-21	arpwatch	19:25:20	0
1155051	2	50	48,1	sleep11	0	-21	swapper/11	19:07:15	3
4189	98	48	0,47	rtkit-daemon	0	-21	swapper/2	19:09:05	8
1155721	99	48	46,2	cyclictest	1266129	-21	kworker/u32:3+events_unbound	21:15:18	0
1155721	99	48	31,17	cyclictest	1769	-21	arpwatch	23:24:44	0
1155770	99	47	46,1	cyclictest	1351119	-21	kworker/u32:1+events_unbound	23:15:17	6
1155770	99	46	46,0	cyclictest	0	-21	swapper/14	20:51:05	6
1155766	99	46	45,1	cyclictest	1222183	-21	kworker/u32:1+events_unbound	21:10:19	5
1155756	99	46	45,1	cyclictest	1293580	-21	kworker/u32:6+flush-259:0	22:20:16	2
1155721	99	46	42,3	cyclictest	1491175	-21	kworker/u32:2+flush-259:0	00:16:23	0
1155736	99	45	2,42	cyclictest	3318	-21	Xorg	23:20:19	10
1155721	99	45	43,2	cyclictest	1142496	-21	kworker/u32:3+events_unbound	19:20:20	0
1155770	99	44	9,10	cyclictest	0	-21	swapper/14	00:20:27	6
1155770	99	44	8,11	cyclictest	0	-21	swapper/14	19:12:55	6
1155770	99	44	8,11	cyclictest	0	-21	swapper/14	19:12:55	6
1155770	99	44	8,11	cyclictest	0	-21	swapper/14	00:31:26	6
1155721	99	44	43,1	cyclictest	1247351	-21	kworker/u32:2+flush-259:0	21:20:18	0
1155770	99	43	41,2	cyclictest	1272863	-21	kworker/u32:4+flush-259:0	21:23:11	6
1155728	99	43	41,2	cyclictest	1449926	-21	kworker/u32:4+flush-259:0	23:50:25	9
1155770	99	42	7,10	cyclictest	0	-21	swapper/14	20:29:48	6
1155770	99	42	4,25	cyclictest	1161449	-21	thunderbird	23:14:33	6
1155766	99	42	41,1	cyclictest	1136954	-21	kworker/u32:0+events_unbound	19:15:01	5
1155766	99	42	41,1	cyclictest	1136954	-21	kworker/u32:0+events_unbound	19:15:01	5
1155766	99	42	40,1	cyclictest	1142496	-21	kworker/u32:3+flush-259:0	19:10:19	5
1155766	99	42	40,1	cyclictest	1142496	-21	kworker/u32:3+flush-259:0	19:10:19	5
1155736	99	42	39,2	cyclictest	1449926	-21	kworker/u32:4+flush-259:0	23:40:16	10
1155721	99	42	41,1	cyclictest	1404609	-21	kworker/u32:0+events_unbound	23:42:46	0
1155721	99	42	41,1	cyclictest	1293580	-21	kworker/u32:6+events_unbound	23:05:23	0
1155721	99	42	40,2	cyclictest	1146687	-21	kworker/u32:1+events_unbound	19:11:55	0
1155721	99	42	40,2	cyclictest	1146687	-21	kworker/u32:1+events_unbound	19:11:55	0
1155241	2	42	40,1	sleep14	0	-21	swapper/14	19:09:42	6
1155153	2	42	40,1	sleep8	0	-21	swapper/8	19:08:32	14
1155770	99	41	5,11	cyclictest	0	-21	swapper/14	19:56:51	6
1155736	99	41	38,2	cyclictest	1252727	-21	kworker/u32:5+flush-259:0	21:00:54	10
1155727	99	41	41,0	cyclictest	1210823	-21	kworker/u32:3+flush-259:0	20:56:14	8
1155009	2	41	39,1	sleep10	0	-21	swapper/10	19:06:42	2
1154928	2	41	38,2	sleep15	0	-21	swapper/15	19:05:43	7
1155770	99	40	15,25	cyclictest	0	-21	swapper/14	23:25:33	6
1155756	99	40	39,1	cyclictest	1404609	-21	kworker/u32:0+flush-259:0	23:38:22	2
1155721	99	40	39,1	cyclictest	1493026	-21	kworker/u32:5+events_unbound	00:20:17	0
1154988	2	40	38,1	sleep9	0	-21	swapper/9	19:06:25	15
1155770	99	39	35,3	cyclictest	1339197	-21	kworker/u32:2+flush-259:0	23:01:30	6
1155766	99	39	37,2	cyclictest	1480065	-21	kworker/u32:0+flush-259:0	00:04:13	5
1155766	99	39	37,2	cyclictest	1460346	-21	kworker/u32:3+flush-259:0	23:48:07	5
1155766	99	39	37,2	cyclictest	1434870	-21	kworker/u32:2+flush-259:0	23:42:28	5
1155756	99	39	37,2	cyclictest	1493026	-21	kworker/u32:5+flush-259:0	00:15:24	2
1155721	99	39	37,2	cyclictest	1281440	-21	kworker/u32:0+events_unbound	21:35:20	0
1155105	2	39	37,1	sleep3	0	-21	swapper/3	19:07:55	9
1154917	2	39	37,1	sleep4	0	-21	swapper/4	19:05:32	10
1155756	99	38	37,1	cyclictest	1210823	-21	kworker/u32:3+events_unbound	20:55:18	2
1155223	2	38	36,1	sleep13	0	-21	swapper/13	19:09:25	5
1155756	99	37	36,1	cyclictest	1313583	-21	kworker/u32:1+flush-259:0	21:55:17	2
1155721	99	37	35,2	cyclictest	1460346	-21	kworker/u32:3+flush-259:0	00:08:22	0
1155721	99	37	35,2	cyclictest	1222183	-21	kworker/u32:1+events_unbound	21:00:20	0
1151781	2	37	35,1	sleep7	0	-21	swapper/7	19:05:03	13
1155770	99	36	35,1	cyclictest	0	-21	swapper/14	22:53:16	6
1155770	99	36	34,2	cyclictest	1351119	-21	kworker/u32:1+events_unbound	00:00:14	6
1155766	99	36	36,0	cyclictest	0	-21	swapper/13	19:45:22	5
1155756	99	36	35,1	cyclictest	1351119	-21	kworker/u32:1+flush-259:0	00:30:15	2
1155756	99	36	35,1	cyclictest	1210823	-21	kworker/u32:3+flush-259:0	20:25:21	2
1155752	99	36	34,2	cyclictest	1351119	-21	kworker/u32:1+flush-259:0	23:24:45	15
1155742	99	36	8,26	cyclictest	3318	-21	Xorg	22:17:42	12
1155736	99	36	35,1	cyclictest	1272863	-21	kworker/u32:4+events_unbound	22:18:57	10
1155721	99	36	34,2	cyclictest	1351119	-21	kworker/u32:1+flush-259:0	22:28:38	0
1155250	2	36	33,2	sleep6	0	-21	swapper/6	19:09:50	12
1155770	99	35	35,0	cyclictest	0	-21	swapper/14	23:59:35	6
1155770	99	35	34,1	cyclictest	0	-21	swapper/14	21:41:19	6
1155756	99	35	34,1	cyclictest	1293580	-21	kworker/u32:6+flush-259:0	22:17:18	2
1155721	99	35	34,1	cyclictest	1491175	-21	kworker/u32:2+events_unbound	00:35:19	0
1155721	99	35	33,2	cyclictest	1293458	-21	kworker/u32:5+flush-259:0	21:59:52	0
1155011	2	35	33,1	sleep12	0	-21	swapper/12	19:06:44	4
1154974	2	35	33,1	sleep1	0	-21	swapper/1	19:06:18	1
1155770	99	34	32,2	cyclictest	1449926	-21	kworker/u32:4+flush-259:0	00:10:16	6
1155770	99	34	32,2	cyclictest	1201227	-21	kworker/u32:2+events_unbound	20:00:21	6
1155766	99	34	33,1	cyclictest	1339197	-21	kworker/u32:2+flush-259:0	23:04:14	5
1155756	99	34	33,1	cyclictest	1371741	-21	kworker/u32:4+flush-259:0	22:45:22	2
1155752	99	34	32,2	cyclictest	1460346	-21	kworker/u32:3+events_unbound	00:09:28	15
1155752	99	34	31,2	cyclictest	1339197	-21	kworker/u32:2+events_unbound	22:40:01	15
1155750	99	34	0,4	cyclictest	0	-21	swapper/8	23:30:32	14
1155742	99	34	26,6	cyclictest	1774	-21	snmpd	21:42:09	12
1155736	99	34	33,1	cyclictest	1434870	-21	kworker/u32:2+flush-259:0	23:35:18	10
1155736	99	34	31,2	cyclictest	1247351	-21	kworker/u32:2+events_unbound	21:30:20	10
1155721	99	34	33,1	cyclictest	1491175	-21	kworker/u32:2+events_unbound	00:13:52	0
1155721	99	34	33,1	cyclictest	1421688	-21	kworker/u32:3+events_unbound	23:35:17	0
1155721	99	34	33,1	cyclictest	1339197	-21	kworker/u32:2+flush-259:0	22:30:16	0
1155227	2	34	32,1	sleep0	0	-21	swapper/0	19:09:28	0
1155770	99	33	8,25	cyclictest	0	-21	swapper/14	20:40:47	6
1155770	99	33	8,0	cyclictest	0	-21	swapper/14	23:47:30	6
1155770	99	33	30,2	cyclictest	1247351	-21	kworker/u32:2+events_unbound	20:59:46	6
1155770	99	33	0,8	cyclictest	0	-21	swapper/14	21:13:44	6
1155766	99	33	32,1	cyclictest	1272863	-21	kworker/u32:4+flush-259:0	21:45:13	5
1155766	99	33	32,1	cyclictest	1272863	-21	kworker/u32:4+events_unbound	22:06:30	5
1155766	99	33	32,1	cyclictest	1272863	-21	kworker/u32:4+events_unbound	22:06:30	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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