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Default latency plot of shadow in rack #c, slot #7

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
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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 rackcslot7s.osadl.org (updated Mon Dec 22, 2025 00:44:53)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1144200	2	87	0,5	sleep3	0	-21	swapper/3	19:45:26	3
1973	99	82	0,64	rtkit-daemon	0	-21	swapper/1	19:05:13	1
1207483	2	81	0,9	sleep0	4497	-21	PK-Backend	22:45:24	0
1246079	2	80	0,7	sleep3	4497	-21	PK-Backend	00:35:30	3
1197576	2	78	0,7	sleep1	4497	-21	PK-Backend	22:17:00	1
1130263	2	77	41,13	sleep2	0	-21	swapper/2	19:07:07	2
1129055	2	68	48,13	sleep0	0	-21	swapper/0	19:05:16	0
1130361	2	64	44,14	sleep3	0	-21	swapper/3	19:08:21	3
1973	99	59	0,9	rtkit-daemon	1972	-21	rtkit-daemon	21:40:35	2
1973	99	59	0,8	rtkit-daemon	1972	-21	rtkit-daemon	21:20:50	3
1973	99	59	0,8	rtkit-daemon	1972	-21	rtkit-daemon	21:20:50	3
1973	99	58	0,9	rtkit-daemon	1972	-21	rtkit-daemon	23:13:50	1
1973	99	57	0,9	rtkit-daemon	1972	-21	rtkit-daemon	22:32:15	1
1210810	2	56	0,8	sleep2	0	-21	swapper/2	22:55:24	2
1973	99	54	0,8	rtkit-daemon	1972	-21	rtkit-daemon	21:26:29	2
1973	99	53	0,8	rtkit-daemon	1972	-21	rtkit-daemon	21:32:13	2
1130643	99	53	15,7	cyclictest	34	-21	ksoftirqd/2	23:49:54	2
1230972	2	51	0,7	sleep2	34	-21	ksoftirqd/2	23:54:40	2
1130643	99	50	1,10	cyclictest	4497	-21	PK-Backend	20:16:01	2
1130643	99	49	22,22	cyclictest	1239695	-21	munin-run	00:20:00	2
1973	99	48	0,41	rtkit-daemon	2753	-21	gmain	21:41:49	3
1193997	2	47	0,6	chrt	0	-21	swapper/0	22:05:32	0
1195005	2	46	0,7	sleep2	4497	-21	PK-Backend	22:10:17	2
1195005	2	46	0,7	sleep2	4497	-21	PK-Backend	22:10:17	2
1166540	2	46	0,5	chrt	0	-21	swapper/0	20:50:02	0
1130640	99	46	35,5	cyclictest	26	-21	ksoftirqd/1	00:05:01	1
1170415	2	45	0,5	chrt	0	-21	swapper/3	21:00:15	3
1973	99	44	0,37	rtkit-daemon	3037	-21	gmain	21:15:36	2
1130643	99	44	1,12	cyclictest	34	-21	ksoftirqd/2	00:25:02	2
1130640	99	44	21,19	cyclictest	1159425	-21	unin-run	20:30:01	1
1973	99	43	0,24	rtkit-daemon	0	-21	swapper/0	19:24:37	0
1973	99	43	0,24	rtkit-daemon	0	-21	swapper/0	19:24:37	0
1130640	99	43	31,9	cyclictest	26	-21	ksoftirqd/1	20:16:01	1
1130640	99	43	24,14	cyclictest	26	-21	ksoftirqd/1	21:55:00	1
1130627	99	43	29,10	cyclictest	1201279	-21	cron	22:30:00	0
1168612	2	42	0,8	sleep3	0	-21	swapper/3	20:55:16	3
1130640	99	42	23,6	cyclictest	26	-21	ksoftirqd/1	23:20:00	1
1130640	99	42	23,14	cyclictest	26	-21	ksoftirqd/1	19:25:00	1
1130640	99	42	23,14	cyclictest	26	-21	ksoftirqd/1	19:25:00	1
1130640	99	42	23,14	cyclictest	26	-21	ksoftirqd/1	00:40:02	1
1130640	99	42	22,15	cyclictest	26	-21	ksoftirqd/1	00:15:15	1
1220086	2	41	0,6	chrt	0	-21	swapper/3	23:20:28	3
1220086	2	41	0,6	chrt	0	-21	swapper/3	23:20:28	3
1130647	99	41	11,25	cyclictest	1188589	-21	smartctl	21:50:29	3
1130643	99	41	9,8	cyclictest	34	-21	ksoftirqd/2	19:42:51	2
1130643	99	41	8,16	cyclictest	34	-21	ksoftirqd/2	00:00:02	2
1130643	99	41	8,16	cyclictest	34	-21	ksoftirqd/2	00:00:01	2
1130643	99	41	8,16	cyclictest	1137	-21	runrttasks	20:48:05	2
1130643	99	41	30,8	cyclictest	34	-21	ksoftirqd/2	00:29:41	2
1130643	99	41	21,8	cyclictest	34	-21	ksoftirqd/2	00:33:32	2
1130643	99	41	18,19	cyclictest	1131440	-21	sed	19:10:22	2
1130643	99	41	1,21	cyclictest	34	-21	ksoftirqd/2	22:25:00	2
1130640	99	41	24,13	cyclictest	26	-21	ksoftirqd/1	19:20:00	1
1130640	99	41	23,6	cyclictest	26	-21	ksoftirqd/1	21:55:09	1
1130640	99	41	23,14	cyclictest	26	-21	ksoftirqd/1	23:05:00	1
1130640	99	41	23,14	cyclictest	26	-21	ksoftirqd/1	21:15:01	1
1130640	99	41	22,6	cyclictest	26	-21	ksoftirqd/1	21:35:01	1
1130640	99	41	22,6	cyclictest	26	-21	ksoftirqd/1	20:50:00	1
1130627	99	41	2,35	cyclictest	1157652	-21	cron	20:25:00	0
1973	99	40	0,28	rtkit-daemon	4497	-21	PK-Backend	21:55:29	3
1175526	2	40	0,5	sleep0	16	1	rcuc/0	21:15:09	0
1130647	99	40	13,23	cyclictest	1153151	-21	kernelversion	20:10:25	3
1130643	99	40	20,17	cyclictest	1215249	-21	apt-config	23:10:01	2
1130640	99	40	23,5	cyclictest	26	-21	ksoftirqd/1	23:35:30	1
1130640	99	40	23,5	cyclictest	26	-21	ksoftirqd/1	21:50:00	1
1130640	99	40	23,5	cyclictest	26	-21	ksoftirqd/1	20:00:09	1
1130640	99	40	23,13	cyclictest	26	-21	ksoftirqd/1	23:25:23	1
1130640	99	40	23,13	cyclictest	26	-21	ksoftirqd/1	22:50:14	1
1130640	99	40	22,5	cyclictest	26	-21	ksoftirqd/1	22:50:00	1
1130640	99	40	22,5	cyclictest	26	-21	ksoftirqd/1	20:55:00	1
1130640	99	40	22,14	cyclictest	26	-21	ksoftirqd/1	21:25:23	1
1130640	99	40	22,14	cyclictest	26	-21	ksoftirqd/1	21:15:22	1
1130640	99	40	20,7	cyclictest	26	-21	ksoftirqd/1	22:10:31	1
1130640	99	40	20,7	cyclictest	26	-21	ksoftirqd/1	22:10:31	1
1130640	99	40	20,16	cyclictest	26	-21	ksoftirqd/1	20:10:18	1
1210623	2	39	0,14	chrt	42	-21	ksoftirqd/3	22:55:21	3
1152617	2	39	0,6	chrt	0	-21	swapper/2	20:10:04	2
1130647	99	39	20,14	cyclictest	2143	-21	upowerd	20:16:00	3
1130647	99	39	14,8	cyclictest	1223607	2	cat	23:30:29	3
1130643	99	39	5,18	cyclictest	34	-21	ksoftirqd/2	22:45:01	2
1130643	99	39	4,31	cyclictest	1204590	-21	sshd	22:38:08	2
1130643	99	39	19,8	cyclictest	34	-21	ksoftirqd/2	21:05:14	2
1130643	99	39	17,8	cyclictest	34	-21	ksoftirqd/2	19:45:39	2
1130643	99	39	16,9	cyclictest	34	-21	ksoftirqd/2	22:05:01	2
1130643	99	39	1,32	cyclictest	438	-20	systemd-journal	23:34:59	2
1130643	99	39	1,21	cyclictest	1148857	-21	taskset	20:00:06	2
1130640	99	39	23,12	cyclictest	26	-21	ksoftirqd/1	22:30:01	1
1130640	99	39	22,5	cyclictest	26	-21	ksoftirqd/1	21:05:00	1
1130640	99	39	22,5	cyclictest	26	-21	ksoftirqd/1	20:10:00	1
1130640	99	39	22,13	cyclictest	26	-21	ksoftirqd/1	23:41:34	1
1130640	99	39	21,14	cyclictest	26	-21	ksoftirqd/1	20:55:23	1
1130640	99	39	21,13	cyclictest	26	-21	ksoftirqd/1	23:35:00	1
1130640	99	39	21,13	cyclictest	26	-21	ksoftirqd/1	00:10:19	1
1130627	99	39	21,14	cyclictest	1244007	-21	memory	00:30:23	0
1131436	2	38	0,6	chrt	0	-21	swapper/0	19:10:22	0
1130647	99	38	22,11	cyclictest	438	-20	systemd-journal	23:14:09	3
1130647	99	38	10,19	cyclictest	42	-21	ksoftirqd/3	00:16:13	3
1130643	99	38	7,15	cyclictest	34	-21	ksoftirqd/2	21:10:43	2
1130643	99	38	4,16	cyclictest	34	-21	ksoftirqd/2	23:10:20	2
1130643	99	38	2,18	cyclictest	34	-21	ksoftirqd/2	22:10:02	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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