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Default latency plot of shadow in rack #7, 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
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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 rack7slot4s.osadl.org (updated Mon Dec 08, 2025 00:45:05)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
7535	99	73	28,8	cyclictest	21	-21	ksoftirqd/1	20:55:15	1
7535	99	73	27,8	cyclictest	21	-21	ksoftirqd/1	23:50:14	1
7520	99	62	6,25	cyclictest	12	-21	ksoftirqd/0	23:45:13	0
7535	99	55	3,39	cyclictest	16184	-21	ssh	23:00:14	1
7543	99	52	3,25	cyclictest	2576	-21	ssh	21:15:14	2
7535	99	52	1,41	cyclictest	818	-21	ssh	00:30:12	1
7543	99	49	25,12	cyclictest	19218	-21	ssh	21:25:13	2
7551	99	47	2,27	cyclictest	295	66	irq/58-eth0	22:40:14	3
7535	99	46	6,32	cyclictest	25392	-21	ssh	00:25:17	1
7535	99	46	2,6	cyclictest	13	1	rcu_preempt	20:35:15	1
7535	99	45	2,7	cyclictest	13	1	rcu_preempt	00:00:16	1
7535	99	45	2,7	cyclictest	13	1	rcu_preempt	00:00:16	1
7520	99	45	9,25	cyclictest	12	-21	ksoftirqd/0	23:40:14	0
7520	99	45	2,36	cyclictest	25624	-21	ssh	23:25:15	0
7535	99	44	27,10	cyclictest	26231	-21	diskmemload	22:00:15	1
7520	99	43	3,32	cyclictest	987	-21	sshd	20:10:16	0
7520	99	43	1,35	cyclictest	0	-21	swapper/0	22:05:14	0
7551	99	42	31,8	cyclictest	295	66	irq/58-eth0	00:15:16	3
7543	99	42	1,24	cyclictest	31909	-21	ssh	22:50:13	2
7535	99	42	4,33	cyclictest	2803	-21	ssh	00:10:12	1
7543	99	41	20,13	cyclictest	0	-21	swapper/2	23:40:14	2
7535	99	40	2,27	cyclictest	0	-21	swapper/1	21:40:13	1
7535	99	39	23,5	cyclictest	21	-21	ksoftirqd/1	19:45:12	1
7520	99	39	3,25	cyclictest	17871	-21	ssh	00:20:12	0
7543	99	38	23,4	cyclictest	27	-21	ksoftirqd/2	20:10:16	2
7543	99	37	2,28	cyclictest	10029	-21	ssh	23:53:44	2
7520	99	37	1,30	cyclictest	13977	-21	ssh	22:20:14	0
7543	99	36	14,10	cyclictest	26	1	rcuc/2	22:30:15	2
7535	99	36	1,28	cyclictest	10903	-21	ssh	21:20:13	1
7520	99	36	2,21	cyclictest	12	-21	ksoftirqd/0	19:10:16	0
7535	99	35	1,6	cyclictest	7149	-21	apt-get	20:50:14	1
7535	99	35	14,16	cyclictest	21	-21	ksoftirqd/1	21:30:15	1
7520	99	35	15,15	cyclictest	12	-21	ksoftirqd/0	22:30:15	0
7551	99	34	1,18	cyclictest	295	66	irq/58-eth0	21:10:15	3
7535	99	34	5,20	cyclictest	17228	-21	ssh	23:20:14	1
7520	99	34	5,4	cyclictest	13	1	rcu_preempt	00:00:16	0
7520	99	34	5,4	cyclictest	13	1	rcu_preempt	00:00:16	0
7543	99	33	2,18	cyclictest	7702	-21	sshd	19:10:16	2
7520	99	33	3,21	cyclictest	15166	-21	ssh	22:40:14	0
7543	99	32	5,4	cyclictest	13	1	rcu_preempt	22:20:01	2
7535	99	32	2,22	cyclictest	6469	-21	sh	22:53:33	1
7535	99	32	18,6	cyclictest	21	-21	ksoftirqd/1	23:35:13	1
7520	99	32	2,22	cyclictest	8827	-21	ssh	23:15:14	0
7520	99	32	11,9	cyclictest	7511	-21	cyclictest	23:05:19	0
7551	99	31	12,14	cyclictest	295	66	irq/58-eth0	23:55:15	3
7543	99	31	2,13	cyclictest	32561	-21	ssh	23:46:34	2
7535	99	31	3,21	cyclictest	6734	-21	ssh	22:35:14	1
7535	99	31	3,21	cyclictest	6734	-21	ssh	22:35:14	1
7535	99	31	1,20	cyclictest	4568	-21	ssh	21:55:13	1
7520	99	31	1,7	cyclictest	12	-21	ksoftirqd/0	22:45:13	0
7543	99	30	2,17	cyclictest	932	-21	snmpd	19:55:16	2
7543	99	30	16,8	cyclictest	27	-21	ksoftirqd/2	20:50:14	2
7543	99	30	11,12	cyclictest	27	-21	ksoftirqd/2	23:36:22	2
7535	99	30	15,6	cyclictest	21	-21	ksoftirqd/1	19:15:14	1
7520	99	30	2,14	cyclictest	0	-21	swapper/0	21:15:14	0
7551	99	29	2,16	cyclictest	295	66	irq/58-eth0	00:00:16	3
7551	99	29	2,16	cyclictest	295	66	irq/58-eth0	00:00:16	3
7543	99	29	3,21	cyclictest	0	-21	swapper/2	22:07:33	2
7543	99	29	3,19	cyclictest	0	-21	swapper/2	23:15:14	2
7543	99	29	14,9	cyclictest	0	-21	swapper/2	21:50:13	2
7543	99	29	1,21	cyclictest	0	-21	swapper/2	22:55:16	2
7535	99	29	8,5	cyclictest	13	1	rcu_preempt	21:50:19	1
7520	99	29	8,7	cyclictest	0	-21	swapper/0	23:54:24	0
7551	99	28	3,18	cyclictest	0	-21	swapper/3	22:54:33	3
7551	99	28	14,8	cyclictest	295	66	irq/58-eth0	21:40:14	3
7543	99	28	8,8	cyclictest	263	46	irq/40-dwc2_hso	00:35:13	2
7543	99	28	8,6	cyclictest	27	-21	ksoftirqd/2	22:47:03	2
7543	99	28	5,12	cyclictest	27	-21	ksoftirqd/2	21:55:20	2
7543	99	28	2,10	cyclictest	24390	-21	ssh	00:23:54	2
7543	99	28	17,8	cyclictest	26	1	rcuc/2	00:15:14	2
7535	99	28	2,19	cyclictest	14067	-21	ssh	22:57:33	1
7520	99	28	4,17	cyclictest	8095	-21	ssh	00:35:13	0
7520	99	28	2,19	cyclictest	9548	-21	ssh	00:13:44	0
7520	99	28	14,5	cyclictest	12	-21	ksoftirqd/0	22:15:27	0
7520	99	28	1,19	cyclictest	3551	-21	ssh	21:35:14	0
7551	99	27	4,10	cyclictest	295	66	irq/58-eth0	00:10:12	3
7543	99	27	5,12	cyclictest	263	46	irq/40-dwc2_hso	21:05:16	2
7543	99	27	4,15	cyclictest	263	46	irq/40-dwc2_hso	21:10:14	2
7543	99	27	2,19	cyclictest	0	-21	swapper/2	20:15:16	2
7520	99	27	9,13	cyclictest	30732	-1	kworker/u9:1	22:54:33	0
7520	99	27	8,11	cyclictest	13	1	rcu_preempt	23:10:13	0
7520	99	27	7,3	cyclictest	13	1	rcu_preempt	22:35:13	0
7520	99	27	7,3	cyclictest	13	1	rcu_preempt	22:35:13	0
7520	99	27	3,17	cyclictest	7894	-21	ssh	22:55:16	0
7520	99	27	18,3	cyclictest	0	-21	swapper/0	00:05:14	0
7520	99	27	1,20	cyclictest	25401	-21	ssh	00:25:17	0
7551	99	26	2,18	cyclictest	0	-21	swapper/3	22:02:36	3
7551	99	26	2,12	cyclictest	295	66	irq/58-eth0	23:00:14	3
7551	99	26	1,15	cyclictest	0	-21	swapper/3	21:30:15	3
7543	99	26	8,11	cyclictest	27	-21	ksoftirqd/2	21:39:04	2
7543	99	26	7,3	cyclictest	13	1	rcu_preempt	21:20:15	2
7543	99	26	5,5	cyclictest	27	-21	ksoftirqd/2	22:25:15	2
7543	99	26	4,15	cyclictest	27	-21	ksoftirqd/2	00:00:27	2
7543	99	26	4,15	cyclictest	27	-21	ksoftirqd/2	00:00:27	2
7543	99	26	4,14	cyclictest	27	-21	ksoftirqd/2	22:12:03	2
7543	99	26	2,15	cyclictest	454	-21	ssh	23:10:13	2
7543	99	26	1,17	cyclictest	25455	-21	ls	00:25:17	2
7535	99	26	3,15	cyclictest	0	-21	swapper/1	20:00:14	1
7535	99	26	2,18	cyclictest	26645	-21	ssh	21:10:15	1
7535	99	26	2,18	cyclictest	22415	-21	ssh	22:25:15	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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