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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
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 rack7slot4s.osadl.org (updated Wed May 13, 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
5493	99	52	4,26	cyclictest	27	-21	ksoftirqd/2	21:15:14	2
5471	99	51	3,37	cyclictest	5856	-21	ssh	00:35:14	0
5471	99	51	1,42	cyclictest	1329	-21	ssh	22:45:14	0
5505	99	47	25,12	cyclictest	359	66	irq/58-eth0	23:40:12	3
5481	99	45	3,29	cyclictest	20883	-21	ssh	22:20:13	1
5481	99	40	1,6	cyclictest	21	-21	ksoftirqd/1	21:05:11	1
5493	99	38	8,22	cyclictest	27	-21	ksoftirqd/2	22:35:13	2
5481	99	38	2,9	cyclictest	21	-21	ksoftirqd/1	23:30:13	1
5471	99	37	0,6	cyclictest	13	1	rcu_preempt	19:25:13	0
5493	99	36	1,17	cyclictest	20162	-21	ssh	22:19:38	2
5481	99	36	11,4	cyclictest	0	-21	swapper/1	19:40:10	1
5471	99	36	2,7	cyclictest	12	-21	ksoftirqd/0	23:55:12	0
5481	99	35	2,8	cyclictest	13	1	rcu_preempt	23:20:13	1
5505	99	34	1,23	cyclictest	359	66	irq/58-eth0	22:35:13	3
5505	99	34	1,17	cyclictest	359	66	irq/58-eth0	22:45:13	3
5493	99	34	2,16	cyclictest	17767	-21	ssh	22:53:39	2
5481	99	34	4,26	cyclictest	31566	-21	ssh	21:50:13	1
5471	99	34	0,27	cyclictest	26245	-21	ssh	22:05:12	0
5493	99	33	0,18	cyclictest	29145	-21	ssh	00:30:15	2
5471	99	33	8,4	cyclictest	13	1	rcu_preempt	23:35:14	0
5471	99	33	4,22	cyclictest	12	-21	ksoftirqd/0	20:00:13	0
5505	99	32	1,15	cyclictest	359	66	irq/58-eth0	19:15:13	3
5505	99	32	1,15	cyclictest	359	66	irq/58-eth0	19:15:13	3
5505	99	31	1,15	cyclictest	359	66	irq/58-eth0	19:20:13	3
5481	99	31	3,25	cyclictest	29139	-21	ssh	00:30:13	1
5481	99	31	2,26	cyclictest	24781	-21	ssh	22:40:13	1
5481	99	31	12,16	cyclictest	14036	-21	ssh	23:10:14	1
5471	99	31	1,23	cyclictest	23890	-21	ssh	22:02:38	0
5471	99	31	10,16	cyclictest	15777	-21	diskmemload	22:35:14	0
5493	99	30	18,5	cyclictest	27	-21	ksoftirqd/2	23:45:28	2
5481	99	30	17,4	cyclictest	21	-21	ksoftirqd/1	23:35:29	1
5471	99	30	2,20	cyclictest	6590	-21	ssh	22:30:13	0
5471	99	30	2,20	cyclictest	6590	-21	ssh	22:30:12	0
5471	99	30	12,12	cyclictest	12	-21	ksoftirqd/0	23:10:16	0
5493	99	29	3,20	cyclictest	0	-21	swapper/2	22:12:41	2
5493	99	29	2,21	cyclictest	0	-21	swapper/2	19:25:15	2
5493	99	29	2,20	cyclictest	0	-21	swapper/2	23:10:15	2
5493	99	29	2,11	cyclictest	27571	-21	ssh	22:22:42	2
5481	99	29	2,22	cyclictest	23677	-21	diskmemload	23:50:13	1
5481	99	29	21,5	cyclictest	0	-21	swapper/1	21:45:14	1
5481	99	29	20,7	cyclictest	0	-21	swapper/1	00:20:13	1
5481	99	29	20,7	cyclictest	0	-21	swapper/1	00:20:12	1
5481	99	29	0,23	cyclictest	0	-21	swapper/1	00:00:12	1
5505	99	28	4,22	cyclictest	359	66	irq/58-eth0	23:10:15	3
5493	99	28	2,20	cyclictest	0	-21	swapper/2	22:45:14	2
5493	99	28	2,11	cyclictest	28247	-21	ssh	23:52:40	2
5481	99	28	3,17	cyclictest	24187	-21	ssh	21:10:15	1
5481	99	28	2,23	cyclictest	3579	-21	sh	23:40:13	1
5481	99	28	2,16	cyclictest	8840	-21	ssh	23:25:14	1
5471	99	28	2,20	cyclictest	15688	-21	ssh	00:04:40	0
5471	99	28	1,5	cyclictest	13	1	rcu_preempt	00:20:12	0
5471	99	28	1,5	cyclictest	13	1	rcu_preempt	00:20:12	0
5505	99	27	19,5	cyclictest	359	66	irq/58-eth0	23:50:13	3
5505	99	27	1,14	cyclictest	359	66	irq/58-eth0	23:55:14	3
5493	99	27	3,16	cyclictest	26	1	rcuc/2	19:15:13	2
5493	99	27	3,16	cyclictest	26	1	rcuc/2	19:15:13	2
5493	99	27	2,9	cyclictest	31201	-21	ssh	22:05:39	2
5493	99	27	2,10	cyclictest	0	-21	swapper/2	21:55:13	2
5493	99	27	1,16	cyclictest	13121	-21	munin-run	21:40:00	2
5493	99	27	10,11	cyclictest	27	-21	ksoftirqd/2	22:40:24	2
5471	99	27	2,19	cyclictest	9488	-21	ssh	22:12:40	0
5471	99	27	0,9	cyclictest	13	1	rcu_preempt	19:30:13	0
5471	99	27	0,20	cyclictest	503	-21	ssh	00:13:39	0
5505	99	26	11,6	cyclictest	359	66	irq/58-eth0	22:05:12	3
5493	99	26	15,9	cyclictest	27	-21	ksoftirqd/2	23:20:14	2
5493	99	26	15,5	cyclictest	27	-21	ksoftirqd/2	20:55:22	2
5493	99	26	13,10	cyclictest	0	-21	swapper/2	20:05:16	2
5493	99	26	1,14	cyclictest	28369	-21	ssh	23:00:15	2
5493	99	26	11,12	cyclictest	0	-21	swapper/2	21:00:27	2
5493	99	26	0,18	cyclictest	12791	-21	kthreadcore	21:20:19	2
5481	99	26	3,7	cyclictest	21	-21	ksoftirqd/1	22:45:14	1
5481	99	26	3,19	cyclictest	10417	-21	ssh	22:50:15	1
5481	99	26	2,7	cyclictest	21	-21	ksoftirqd/1	00:35:12	1
5471	99	26	1,8	cyclictest	19669	66	ssh	23:48:13	0
5471	99	26	1,3	cyclictest	13	1	rcu_preempt	20:40:16	0
5471	99	26	1,18	cyclictest	24797	-21	sh	22:40:15	0
5471	99	26	0,17	cyclictest	9752	-21	rm	21:20:12	0
5493	99	25	9,7	cyclictest	16133	-21	sed	00:05:02	2
5493	99	25	7,2	cyclictest	28722	-21	grep	19:30:29	2
5493	99	25	6,15	cyclictest	13	1	rcu_preempt	20:40:13	2
5493	99	25	5,13	cyclictest	13	1	rcu_preempt	23:40:20	2
5493	99	25	4,14	cyclictest	9839	-21	ssh	23:05:31	2
5493	99	25	2,9	cyclictest	0	-21	swapper/2	20:00:12	2
5493	99	25	2,15	cyclictest	273	46	irq/40-dwc2_hso	19:50:14	2
5493	99	25	12,10	cyclictest	0	-21	swapper/2	23:35:12	2
5493	99	25	1,16	cyclictest	20408	-21	grep	00:25:17	2
5493	99	25	1,10	cyclictest	13302	-21	kthreadcore	00:20:21	2
5493	99	25	1,10	cyclictest	13302	-21	kthreadcore	00:20:20	2
5481	99	25	7,3	cyclictest	13	1	rcu_preempt	23:45:29	1
5481	99	25	4,3	cyclictest	13	1	rcu_preempt	21:25:01	1
5481	99	25	3,4	cyclictest	13	1	rcu_preempt	19:45:12	1
5481	99	25	2,19	cyclictest	23938	-21	ssh	00:08:41	1
5481	99	25	20,3	cyclictest	8722	-21	ssh	00:17:40	1
5481	99	25	13,9	cyclictest	16310	-21	cron	19:55:00	1
5481	99	25	1,15	cyclictest	6580	-21	ssh	22:30:12	1
5481	99	25	1,15	cyclictest	6580	-21	ssh	22:30:11	1
5505	99	24	14,6	cyclictest	359	66	irq/58-eth0	22:00:13	3
5493	99	24	5,12	cyclictest	30128	-21	fschecks_time	22:25:15	2
5493	99	24	5,11	cyclictest	22439	-21	latency_hist	20:35:01	2
5493	99	24	17,3	cyclictest	17840	-21	ssh	23:30:14	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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