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Default latency plot of shadow in rack #9, 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 highest latencies:

System rack9slot4s (updated Sat Jul 18, 2026 00:59:00)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
24948	99	1075	1065,7	cyclictest	0	-21	swapper/1	19:27:27	1
24544	2	588	544,30	sleep1	0	-21	swapper/1	19:21:21	1
24730	2	562	516,31	sleep0	0	-21	swapper/0	19:23:16	0
24947	99	190	181,6	cyclictest	0	-21	swapper/0	19:27:28	0
24948	99	44	14,4	cyclictest	22	-21	ksoftirqd/1	19:37:28	1
24948	99	44	13,3	cyclictest	22	-21	ksoftirqd/1	22:44:18	1
24948	99	43	8,6	cyclictest	18436	-21	mailstats	21:55:26	1
24948	99	43	3,11	cyclictest	0	-21	swapper/1	21:13:08	1
24948	99	43	13,4	cyclictest	22	-21	ksoftirqd/1	23:31:22	1
24948	99	43	13,4	cyclictest	22	-21	ksoftirqd/1	23:04:25	1
24948	99	43	13,4	cyclictest	22	-21	ksoftirqd/1	22:22:44	1
24948	99	43	13,4	cyclictest	22	-21	ksoftirqd/1	21:48:10	1
24948	99	43	13,4	cyclictest	22	-21	ksoftirqd/1	19:34:25	1
24948	99	43	12,5	cyclictest	22	-21	ksoftirqd/1	23:56:36	1
24948	99	43	12,4	cyclictest	22	-21	ksoftirqd/1	00:39:27	1
24948	99	42	13,4	cyclictest	22	-21	ksoftirqd/1	19:44:15	1
24948	99	42	13,4	cyclictest	22	-21	ksoftirqd/1	00:33:27	1
24948	99	42	13,3	cyclictest	22	-21	ksoftirqd/1	00:24:14	1
24948	99	42	12,4	cyclictest	22	-21	ksoftirqd/1	23:24:10	1
24948	99	42	12,4	cyclictest	22	-21	ksoftirqd/1	21:38:30	1
24948	99	42	12,4	cyclictest	22	-21	ksoftirqd/1	20:25:31	1
24948	99	42	12,13	cyclictest	22	-21	ksoftirqd/1	22:50:18	1
24948	99	42	11,4	cyclictest	22	-21	ksoftirqd/1	00:42:34	1
24948	99	41	7,6	cyclictest	9067	-21	mailstats	21:30:27	1
24948	99	41	1,7	cyclictest	0	-21	swapper/1	22:39:20	1
24948	99	41	16,5	cyclictest	22	-21	ksoftirqd/1	21:05:29	1
24948	99	41	14,8	cyclictest	22	-21	ksoftirqd/1	20:00:15	1
24948	99	41	12,4	cyclictest	22	-21	ksoftirqd/1	23:43:01	1
24948	99	41	12,4	cyclictest	22	-21	ksoftirqd/1	20:53:38	1
24948	99	41	12,4	cyclictest	22	-21	ksoftirqd/1	20:21:03	1
24948	99	41	12,4	cyclictest	22	-21	ksoftirqd/1	00:07:57	1
24948	99	40	7,6	cyclictest	4558	-21	mailstats	00:10:27	1
24948	99	40	15,5	cyclictest	22	-21	ksoftirqd/1	00:51:25	1
24948	99	40	13,14	cyclictest	22	-21	ksoftirqd/1	22:59:10	1
24948	99	40	13,12	cyclictest	22	-21	ksoftirqd/1	19:54:24	1
24948	99	40	12,8	cyclictest	22	-21	ksoftirqd/1	00:02:12	1
24948	99	40	11,4	cyclictest	22	-21	ksoftirqd/1	20:40:52	1
24948	99	39	16,4	cyclictest	22	-21	ksoftirqd/1	21:02:51	1
24948	99	39	15,5	cyclictest	22	-21	ksoftirqd/1	23:13:44	1
24948	99	39	15,4	cyclictest	22	-21	ksoftirqd/1	21:53:32	1
24948	99	38	3,6	cyclictest	22	-21	ksoftirqd/1	20:09:12	1
24948	99	38	2,9	cyclictest	0	-21	swapper/1	22:15:12	1
24948	99	38	2,9	cyclictest	0	-21	swapper/1	21:15:12	1
24948	99	38	15,5	cyclictest	22	-21	ksoftirqd/1	20:48:55	1
24948	99	38	15,4	cyclictest	22	-21	ksoftirqd/1	19:45:27	1
24948	99	38	14,6	cyclictest	22	-21	ksoftirqd/1	20:34:57	1
24948	99	37	8,10	cyclictest	23958	-21	ntp_states	22:10:24	1
24948	99	37	22,4	cyclictest	22	-21	ksoftirqd/1	21:43:43	1
24948	99	37	14,6	cyclictest	22	-21	ksoftirqd/1	22:46:53	1
24948	99	37	13,8	cyclictest	22	-21	ksoftirqd/1	22:26:40	1
24948	99	37	13,5	cyclictest	22	-21	ksoftirqd/1	22:06:12	1
24948	99	37	13,4	cyclictest	22	-21	ksoftirqd/1	23:49:06	1
24948	99	37	12,15	cyclictest	22	-21	ksoftirqd/1	00:45:25	1
24948	99	37	11,3	cyclictest	22	-21	ksoftirqd/1	20:55:23	1
24947	99	37	3,11	cyclictest	8	1	rcu_preempt	20:57:58	0
10589	2	37	1,5	sleep1	10598	-21	df_inode	20:10:13	1
24948	99	36	22,3	cyclictest	22	-21	ksoftirqd/1	23:25:27	1
24948	99	36	19,4	cyclictest	22	-21	ksoftirqd/1	19:57:27	1
24948	99	36	13,4	cyclictest	22	-21	ksoftirqd/1	21:20:27	1
24948	99	36	13,4	cyclictest	22	-21	ksoftirqd/1	00:18:28	1
24948	99	36	13,3	cyclictest	22	-21	ksoftirqd/1	23:50:31	1
24948	99	36	12,4	cyclictest	22	-21	ksoftirqd/1	23:15:01	1
24948	99	36	11,5	cyclictest	22	-21	ksoftirqd/1	00:27:47	1
24947	99	36	3,16	cyclictest	8	1	rcu_preempt	21:35:45	0
24947	99	36	3,10	cyclictest	8	1	rcu_preempt	20:34:12	0
24948	99	35	4,5	cyclictest	13017	-21	ntpq	20:15:25	1
24948	99	35	12,4	cyclictest	22	-21	ksoftirqd/1	23:05:47	1
24948	99	35	12,4	cyclictest	22	-21	ksoftirqd/1	21:27:32	1
24948	99	35	11,5	cyclictest	22	-21	ksoftirqd/1	23:38:00	1
24948	99	35	1,15	cyclictest	0	-21	swapper/1	22:01:40	1
24947	99	35	1,11	cyclictest	8	1	rcu_preempt	23:16:04	0
24948	99	34	12,4	cyclictest	22	-21	ksoftirqd/1	20:35:20	1
24948	99	34	12,3	cyclictest	22	-21	ksoftirqd/1	22:30:42	1
24947	99	34	7,13	cyclictest	29535	-21	fschecks_time	21:00:16	0
24947	99	34	1,14	cyclictest	0	-21	swapper/0	23:33:53	0
24947	99	34	1,13	cyclictest	0	-21	swapper/0	19:36:04	0
24947	99	33	12,6	cyclictest	6041	-21	cron	21:24:59	0
24947	99	33	1,21	cyclictest	1167	-21	runrttasks	00:02:09	0
24947	99	33	1,20	cyclictest	18664	-21	taskset	23:23:06	0
24947	99	33	11,4	cyclictest	8	1	rcu_preempt	22:40:15	0
4361	2	32	1,26	sleep0	4455	-21	hddtemp_smartct	22:45:16	0
4092	2	32	1,4	sleep0	4111	-21	rm	00:10:17	0
3924	2	32	1,9	sleep0	0	-21	swapper/0	21:17:40	0
24947	99	32	6,14	cyclictest	31489	-21	/usr/sbin/munin	22:30:24	0
24947	99	32	5,14	cyclictest	30205	-21	cron	22:27:01	0
24947	99	32	3,5	cyclictest	8	1	rcu_preempt	20:00:14	0
24947	99	32	3,15	cyclictest	32015	-21	sh	00:00:00	0
24947	99	32	1,9	cyclictest	0	-21	swapper/0	20:25:26	0
24947	99	32	1,4	cyclictest	8	1	rcu_preempt	20:38:00	0
24947	99	32	1,19	cyclictest	11564	-21	packagekitd	00:17:34	0
24947	99	32	1,15	cyclictest	10830	-21	hwlatdetect	20:10:16	0
24947	99	32	1,14	cyclictest	0	-21	swapper/0	20:49:41	0
24947	99	31	1,4	cyclictest	8	1	rcu_preempt	22:22:32	0
24947	99	31	14,5	cyclictest	28869	-21	users	19:30:29	0
24947	99	31	12,6	cyclictest	17406	-21	iostat_ios	00:45:20	0
24947	99	31	11,6	cyclictest	2989	-21	grep	19:50:11	0
24947	99	31	1,11	cyclictest	25010	-21	aten_r4power_cu	22:15:10	0
24947	99	31	0,11	cyclictest	8	1	rcu_preempt	22:58:17	0
24947	99	30	6,13	cyclictest	402	50	irq/92-i915	22:35:15	0
24947	99	30	3,5	cyclictest	8	1	rcu_preempt	00:22:03	0
24947	99	30	3,4	cyclictest	8	1	rcu_preempt	23:00:27	0
24947	99	30	3,15	cyclictest	0	-21	swapper/0	23:25:14	0
24947	99	30	2,14	cyclictest	14025	-21	diskstats	21:45:15	0
24947	99	30	1,16	cyclictest	5479	-21	ntpdc	19:55:25	0
24947	99	30	11,6	cyclictest	12190	-21	/usr/sbin/munin	20:15:28	0
24947	99	30	1,12	cyclictest	8968	-21	ps	21:30:26	0
24947	99	29	7,5	cyclictest	8	1	rcu_preempt	21:40:12	0
24947	99	29	6,19	cyclictest	13234	-21	cat	23:10:01	0
24947	99	29	5,12	cyclictest	10419	-21	unixbench_multi	00:25:27	0
24947	99	29	4,3	cyclictest	8	1	rcu_preempt	22:13:12	0
24947	99	29	3,13	cyclictest	19644	-21	mailstats	00:50:26	0
24947	99	29	2,4	cyclictest	8	1	rcu_preempt	23:41:37	0
24947	99	29	1,5	cyclictest	8	1	rcu_preempt	00:40:24	0
24947	99	29	1,5	cyclictest	8	1	rcu_preempt	00:30:27	0
24947	99	29	11,5	cyclictest	8810	-21	fschecks_count	20:05:15	0
24947	99	29	1,15	cyclictest	27816	-21	sshd	23:45:29	0
24947	99	29	1,14	cyclictest	7556	-21	runrttasks	21:26:15	0
24947	99	29	1,13	cyclictest	2643	-21	latency_hist	19:50:02	0
24947	99	29	1,13	cyclictest	14698	-21	runrttasks	23:11:05	0
24947	99	29	10,6	cyclictest	17948	-21	perl	21:55:17	0
24947	99	29	0,4	cyclictest	8	1	rcu_preempt	21:12:08	0
24947	99	29	0,3	cyclictest	8	1	rcu_preempt	23:50:03	0
24947	99	28	2,13	cyclictest	1781	-21	cpuspeed_turbos	00:05:12	0
24947	99	28	1,4	cyclictest	8	1	rcu_preempt	19:40:12	0
24947	99	28	1,14	cyclictest	11565	-21	gdbus	20:51:40	0
24947	99	28	1,14	cyclictest	11564	-21	packagekitd	22:03:10	0
24947	99	28	10,6	cyclictest	6374	-21	sort	22:50:18	0
24947	99	28	10,6	cyclictest	31330	-21	fschecks_count	21:05:17	0
24947	99	28	10,5	cyclictest	0	-21	swapper/0	20:40:12	0
24947	99	27	8,7	cyclictest	13590	-21	interrupts	00:35:18	0
24947	99	27	5,4	cyclictest	8	1	rcu_preempt	22:05:09	0
24947	99	27	2,4	cyclictest	8	1	rcu_preempt	21:51:36	0
24263	2	27	1,5	sleep0	0	-21	swapper/0	23:37:50	0
24947	99	26	1,16	cyclictest	0	-21	swapper/0	20:20:08	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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