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 Jul 10, 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
1125703	2	386	0,2	sleep3	0	-21	swapper/3	21:05:25	3
1088749	2	193	0,4	sleep3	75	-21	kworker/3:1-events	20:30:14	3
1005060	99	66	60,4	cyclictest	1136347	-21	kworker/u8:0+events_unbound	22:00:25	1
1005063	99	65	44,18	cyclictest	1704890	-21	systemd-journal	23:03:53	2
1183896	2	63	0,3	sleep1	28	1	rcuc/1	22:05:15	1
1005060	99	61	56,4	cyclictest	1197517	-21	kworker/u8:0+flush-8:0	22:20:30	1
1005060	99	61	56,3	cyclictest	1197517	-21	kworker/u8:0+events_unbound	23:25:09	1
1005060	99	59	53,4	cyclictest	1070983	-21	kworker/u8:1+flush-8:0	20:20:23	1
1005060	99	58	53,4	cyclictest	1280690	-21	kworker/u8:3+events_unbound	00:30:25	1
1005060	99	58	51,5	cyclictest	1136347	-21	kworker/u8:0+flush-8:0	21:25:20	1
1005060	99	56	51,4	cyclictest	1091054	-21	kworker/u8:3+flush-8:0	21:45:24	1
1005060	99	55	50,4	cyclictest	3835863	-21	kworker/u8:4+events_unbound	22:10:20	1
1005060	99	55	49,4	cyclictest	3835863	-21	kworker/u8:4+flush-8:0	19:20:24	1
1005060	99	55	49,4	cyclictest	3835863	-21	kworker/u8:4+flush-8:0	19:20:23	1
1005060	99	55	47,6	cyclictest	1280690	-21	kworker/u8:3+flush-8:0	00:15:25	1
1005060	99	54	47,5	cyclictest	1197517	-21	kworker/u8:0+events_unbound	22:40:23	1
1174781	2	53	0,1	sleep2	1174779	-21	latency	21:55:17	2
1174781	2	53	0,1	sleep2	1174779	-21	latency	21:55:16	2
1005060	99	52	48,3	cyclictest	1238000	-21	kworker/u8:1+events_unbound	23:35:22	1
1005060	99	52	48,3	cyclictest	1238000	-21	kworker/u8:1+events_unbound	23:00:19	1
1005060	99	52	47,4	cyclictest	1197517	-21	kworker/u8:0+flush-8:0	23:40:20	1
1005060	99	52	47,4	cyclictest	1136347	-21	kworker/u8:0+flush-8:0	21:30:25	1
1005060	99	52	47,3	cyclictest	1280690	-21	kworker/u8:3+events_unbound	00:25:23	1
1005058	99	52	44,6	cyclictest	1121195	-21	latency_hist	21:05:01	0
1005060	99	51	45,4	cyclictest	3835863	-21	kworker/u8:4+flush-8:0	20:55:20	1
1005058	99	51	44,5	cyclictest	3835863	-21	kworker/u8:4+flush-8:0	19:25:22	0
1005058	99	51	42,7	cyclictest	1704890	-21	systemd-journal	00:20:00	0
1005060	99	50	44,4	cyclictest	1280690	-21	kworker/u8:3+flush-8:0	23:45:11	1
1005060	99	49	43,4	cyclictest	1026442	-21	kworker/u8:0+flush-8:0	19:40:21	1
1005060	99	49	42,5	cyclictest	1238000	-21	kworker/u8:1+events_unbound	00:20:21	1
1005060	99	49	41,6	cyclictest	1091054	-21	kworker/u8:3+flush-8:0	21:05:19	1
1005058	99	49	44,3	cyclictest	1210844	-21	kworker/u8:2+flush-8:0	22:55:24	0
1005060	99	48	43,4	cyclictest	1070983	-21	kworker/u8:1+flush-8:0	20:15:24	1
1005060	99	48	43,4	cyclictest	1026442	-21	kworker/u8:0+events_unbound	20:30:01	1
1005060	99	48	43,3	cyclictest	3835863	-21	kworker/u8:4+flush-8:0	19:35:24	1
1005060	99	48	43,3	cyclictest	3835863	-21	kworker/u8:4+events_unbound	19:25:20	1
1005060	99	48	40,6	cyclictest	1051778	-21	apt-get	19:55:03	1
1005060	99	48	39,7	cyclictest	1060512	-21	ntpq	20:00:16	1
1005058	99	48	44,3	cyclictest	1091054	-21	kworker/u8:3+events_unbound	21:45:20	0
1005060	99	47	42,4	cyclictest	3835863	-21	kworker/u8:4+events_unbound	20:35:07	1
1005060	99	47	42,4	cyclictest	1091054	-21	kworker/u8:3+events_unbound	21:00:18	1
1005060	99	47	42,4	cyclictest	1026442	-21	kworker/u8:0+events_unbound	20:05:08	1
1005058	99	47	42,4	cyclictest	3835863	-21	kworker/u8:4+flush-8:0	19:50:22	0
1005060	99	46	41,4	cyclictest	1091054	-21	kworker/u8:3+events_unbound	21:40:23	1
1005060	99	46	40,5	cyclictest	1197517	-21	kworker/u8:0+flush-8:0	23:50:20	1
1005058	99	46	41,4	cyclictest	1130248	-21	kworker/u8:1+flush-8:0	21:15:23	0
1005058	99	46	41,4	cyclictest	1091054	-21	kworker/u8:3+flush-8:0	20:35:21	0
1005058	99	46	41,3	cyclictest	1280690	-21	kworker/u8:3+events_unbound	23:45:24	0
1005058	99	46	40,4	cyclictest	1026442	-21	kworker/u8:0+flush-8:0	19:40:23	0
1005058	99	46	38,6	cyclictest	1170957	-21	latency_hist	21:55:01	0
1005060	99	45	41,3	cyclictest	3835863	-21	kworker/u8:4+events_unbound	19:50:12	1
1005060	99	45	41,3	cyclictest	1026442	-21	kworker/u8:0+events_unbound	20:10:20	1
1005060	99	45	40,4	cyclictest	1136347	-21	kworker/u8:0+flush-8:0	21:35:21	1
1005060	99	45	39,5	cyclictest	3835863	-21	kworker/u8:4+flush-8:0	21:55:20	1
1005060	99	45	39,5	cyclictest	3835863	-21	kworker/u8:4+flush-8:0	21:55:19	1
1005060	99	45	39,5	cyclictest	1210844	-21	kworker/u8:2+flush-8:0	22:50:21	1
1005058	99	45	40,4	cyclictest	1197517	-21	kworker/u8:0+flush-8:0	22:20:32	0
1005063	99	44	32,10	cyclictest	1320646	-21	cat	00:25:01	2
1005060	99	44	39,3	cyclictest	1197517	-21	kworker/u8:0+flush-8:0	23:30:21	1
1005060	99	44	38,4	cyclictest	1238000	-21	kworker/u8:1+flush-8:0	23:05:24	1
1005058	99	44	40,3	cyclictest	1100575	-21	kworker/u8:0+flush-8:0	20:50:22	0
1005058	99	44	38,4	cyclictest	1197517	-21	kworker/u8:0+events_unbound	22:45:01	0
1005060	99	43	38,4	cyclictest	3835863	-21	kworker/u8:4+flush-8:0	20:50:12	1
1005060	99	43	34,7	cyclictest	1090500	-21	ntpq	20:30:19	1
1005058	99	43	39,3	cyclictest	3835863	-21	kworker/u8:4+events_unbound	19:15:04	0
1005058	99	43	39,3	cyclictest	1197517	-21	kworker/u8:0+events_unbound	00:00:12	0
1005058	99	43	35,6	cyclictest	1181092	-21	/usr/sbin/munin	22:05:19	0
1005060	99	42	36,4	cyclictest	1210844	-21	kworker/u8:2+flush-8:0	22:55:22	1
1005058	99	42	2,38	cyclictest	1	-21	systemd	21:35:01	0
1005063	99	41	17,7	cyclictest	1704890	-21	systemd-journal	20:50:01	2
1005060	99	41	35,4	cyclictest	1280690	-21	kworker/u8:3+flush-8:0	00:35:19	1
1005060	99	41	35,4	cyclictest	1280690	-21	kworker/u8:3+flush-8:0	00:35:18	1
1005060	99	41	33,6	cyclictest	1704890	-21	systemd-journal	22:25:03	1
1005060	99	41	33,6	cyclictest	1221054	-21	apt-get	22:45:04	1
1005058	99	41	35,4	cyclictest	3835863	-21	kworker/u8:4+events_unbound	19:20:10	0
1005058	99	41	35,4	cyclictest	3835863	-21	kworker/u8:4+events_unbound	19:20:10	0
1005060	99	40	35,4	cyclictest	1238000	-21	kworker/u8:1+flush-8:0	23:15:24	1
1005058	99	40	36,3	cyclictest	1070983	-21	kworker/u8:1+flush-8:0	20:25:22	0
1005060	99	39	35,3	cyclictest	1238000	-21	kworker/u8:1+flush-8:0	00:00:26	1
1005060	99	39	32,6	cyclictest	1091054	-21	kworker/u8:3+events_unbound	21:50:19	1
1005058	99	39	32,5	cyclictest	1704890	-21	systemd-journal	22:17:07	0
1005058	99	39	31,6	cyclictest	3835863	-21	kworker/u8:4+flush-8:0	19:30:18	0
1005060	99	38	34,3	cyclictest	3835863	-21	kworker/u8:4+flush-8:0	20:45:21	1
1005060	99	38	31,5	cyclictest	3835863	-21	kworker/u8:4+flush-8:0	22:15:06	1
1005060	99	38	31,5	cyclictest	1197517	-21	kworker/u8:0+flush-8:0	22:30:20	1
1005060	99	38	29,6	cyclictest	1704890	-21	systemd-journal	23:15:01	1
1004878	2	38	2,7	sleep3	0	-21	swapper/3	19:10:00	3
1005063	99	37	22,12	cyclictest	1191263	-21	cpuspeed_turbos	22:15:05	2
1005063	99	37	13,8	cyclictest	1704890	-21	systemd-journal	20:10:21	2
1005060	99	37	31,4	cyclictest	1197517	-21	kworker/u8:0+flush-8:0	23:55:25	1
1005060	99	37	30,5	cyclictest	1238000	-21	kworker/u8:1+events_unbound	23:20:23	1
1005058	99	37	33,3	cyclictest	1026442	-21	kworker/u8:0+events_unbound	20:05:13	0
1005058	99	37	31,4	cyclictest	1197517	-21	kworker/u8:0+flush-8:0	22:45:20	0
1005058	99	37	31,4	cyclictest	1076314	-21	apt-get	20:20:00	0
1005060	99	36	31,4	cyclictest	3835863	-21	kworker/u8:4+events_unbound	19:30:18	1
1005058	99	36	32,3	cyclictest	1280690	-21	kworker/u8:3+flush-8:0	00:30:27	0
1005058	99	36	31,3	cyclictest	1026442	-21	kworker/u8:0+flush-8:0	20:20:11	0
1005058	99	36	30,5	cyclictest	1091054	-21	kworker/u8:3+flush-8:0	21:55:20	0
1005058	99	36	30,5	cyclictest	1091054	-21	kworker/u8:3+flush-8:0	21:55:20	0
1005058	99	36	28,6	cyclictest	1704890	-21	systemd-journal	22:37:10	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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