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Default latency plot of shadow in rack #e, slot #3

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
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rackeslot3s.osadl.org (updated Mon Mar 16, 2026 12:45:31)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3179259	99	116	9,7	cyclictest	3196760	-21	ssh	09:35:02	0
3179266	99	93	82,7	cyclictest	30	-21	ksoftirqd/2	11:25:02	2
3179259	99	87	83,2	cyclictest	0	-21	swapper/0	08:15:01	0
3179259	99	80	76,2	cyclictest	0	-21	swapper/0	10:45:03	0
3179266	99	79	3,41	cyclictest	3193642	-21	ssh	09:28:10	2
3179266	99	74	2,37	cyclictest	3262573	-21	ssh	12:02:07	2
3179266	99	74	1,43	cyclictest	3253945	-21	ssh	11:42:56	2
3179259	99	73	19,46	cyclictest	3261549	-21	sendmail	12:00:01	0
3179259	99	73	19,46	cyclictest	3261549	-21	sendmail	12:00:01	0
3179266	99	70	7,45	cyclictest	3212426	-21	ssh	10:10:03	2
3179266	99	70	7,45	cyclictest	3212426	-21	ssh	10:10:02	2
3179264	99	70	28,7	cyclictest	3184625	-21	sshd	08:53:35	1
3179266	99	69	21,43	cyclictest	3250383	-21	cat	11:35:02	2
3179266	99	68	2,44	cyclictest	3188644	-21	ssh	09:16:51	2
3179266	99	68	1,63	cyclictest	3259132	-21	ssh	11:54:49	2
3179264	99	68	49,10	cyclictest	23	-21	ksoftirqd/1	09:35:03	1
3179264	99	68	19,21	cyclictest	23	-21	ksoftirqd/1	09:30:03	1
3179266	99	67	2,3	cyclictest	13	1	rcu_preempt	08:55:02	2
3179264	99	67	25,10	cyclictest	309	-21	in:imuxsock	10:35:03	1
3179266	99	66	2,40	cyclictest	3182868	-21	munin-run	08:20:02	2
3179266	99	66	2,31	cyclictest	3206837	-21	ssh	09:57:43	2
3179266	99	66	1,61	cyclictest	3260352	-21	ssh	11:57:09	2
3179266	99	66	1,61	cyclictest	3260352	-21	ssh	11:57:09	2
3179266	99	66	1,61	cyclictest	3236043	-21	ssh	11:02:52	2
3179266	99	66	1,60	cyclictest	3271734	-21	ssh	12:24:05	2
3179266	99	66	1,60	cyclictest	3271734	-21	ssh	12:24:04	2
3179266	99	66	14,48	cyclictest	3183334	-21	sshd	08:27:35	2
3179266	99	66	1,32	cyclictest	3203683	-21	ssh	09:50:18	2
3179266	99	65	2,35	cyclictest	3184140	-21	munin-run	08:45:00	2
3179266	99	65	20,41	cyclictest	30	-21	ksoftirqd/2	10:02:31	2
3179266	99	65	18,43	cyclictest	30	-21	ksoftirqd/2	10:45:23	2
3179266	99	65	1,61	cyclictest	3220442	-21	ssh	10:28:02	2
3179266	99	65	1,60	cyclictest	3274038	-21	ssh	12:29:22	2
3179266	99	65	1,60	cyclictest	3269773	-21	ssh	12:19:54	2
3179266	99	65	1,60	cyclictest	3264699	-21	ssh	12:06:58	2
3179266	99	65	1,60	cyclictest	3264699	-21	ssh	12:06:58	2
3179266	99	65	1,60	cyclictest	3224418	-21	ssh	10:36:49	2
3179266	99	65	1,60	cyclictest	3215935	-21	ssh	10:17:57	2
3179266	99	65	1,60	cyclictest	3213761	-21	ssh	10:13:12	2
3179266	99	65	1,60	cyclictest	3198803	-21	ssh	09:39:55	2
3179266	99	65	1,60	cyclictest	3198803	-21	ssh	09:39:54	2
3179266	99	65	1,60	cyclictest	3194717	-21	ssh	09:30:11	2
3179266	99	65	1,60	cyclictest	3186133	-21	ssh	09:11:06	2
3179266	99	65	1,59	cyclictest	3256292	-21	ssh	11:48:09	2
3179266	99	65	1,59	cyclictest	3201428	-21	sh	09:45:13	2
3179266	99	64	1,60	cyclictest	3237129	-21	ssh	11:05:05	2
3179266	99	64	1,59	cyclictest	3277748	-21	ssh	12:37:33	2
3179266	99	64	1,59	cyclictest	3276124	-21	ssh	12:34:07	2
3179266	99	64	1,59	cyclictest	3252269	-21	ssh	11:39:15	2
3179266	99	64	1,59	cyclictest	3246463	-21	ssh	11:26:02	2
3179266	99	64	1,59	cyclictest	3242924	-21	ssh	11:18:30	2
3179266	99	64	1,59	cyclictest	3239381	-21	ssh	11:10:11	2
3179266	99	64	1,59	cyclictest	3230678	-21	ssh	10:50:36	2
3179266	99	64	1,59	cyclictest	3222097	-21	ssh	10:31:34	2
3179266	99	64	1,59	cyclictest	3222097	-21	ssh	10:31:34	2
3179266	99	64	1,59	cyclictest	3217366	-21	ssh	10:20:50	2
3179266	99	64	1,59	cyclictest	3199457	-21	ssh	09:40:53	2
3179266	99	63	1,59	cyclictest	3226943	-21	ssh	10:42:34	2
3179266	99	63	1,58	cyclictest	3266912	-21	ssh	12:12:19	2
3179266	99	63	1,58	cyclictest	3232824	-21	ssh	10:55:30	2
3179266	99	63	1,58	cyclictest	3190327	-21	ssh	09:20:23	2
3179259	99	63	3,8	cyclictest	3190112	-21	grep	09:20:01	0
3179266	99	62	1,57	cyclictest	3182042	-21	sshd	08:04:35	2
3179266	99	61	2,55	cyclictest	3179447	-21	munin-run	07:15:01	2
3179266	99	61	1,54	cyclictest	48	-21	kcompactd0	07:26:25	2
3179266	99	59	2,52	cyclictest	364	-21	snmpd	07:15:34	2
3179266	99	59	1,54	cyclictest	3183120	-21	munin-run	08:25:02	2
3179266	99	59	1,54	cyclictest	3180461	-21	sshd	07:30:35	2
3179266	99	59	1,53	cyclictest	364	-21	snmpd	08:38:33	2
3179264	99	59	28,9	cyclictest	23	-21	ksoftirqd/1	09:05:02	1
3179264	99	59	28,9	cyclictest	23	-21	ksoftirqd/1	09:05:01	1
3179266	99	58	1,53	cyclictest	364	-21	snmpd	07:47:14	2
3179266	99	57	1,52	cyclictest	364	-21	snmpd	08:32:43	2
3179266	99	57	1,52	cyclictest	364	-21	snmpd	08:32:42	2
3179266	99	56	46,6	cyclictest	3182340	-21	kworker/2:2	08:54:59	2
3179266	99	56	3,48	cyclictest	364	-21	snmpd	07:37:32	2
3179266	99	56	2,50	cyclictest	3181745	-21	sshd	07:55:34	2
3179266	99	56	1,50	cyclictest	3185461	-21	munin-run	09:10:01	2
3179266	99	56	1,50	cyclictest	3184365	-21	sshd	08:46:36	2
3179266	99	56	1,50	cyclictest	3184365	-21	sshd	08:46:35	2
3179259	99	56	12,39	cyclictest	12	-21	ksoftirqd/0	12:36:50	0
3179269	99	55	36,14	cyclictest	1	-21	systemd	11:55:01	3
3179266	99	55	2,49	cyclictest	3185141	-21	sshd	09:00:35	2
3179266	99	55	2,49	cyclictest	3185141	-21	sshd	09:00:35	2
3179266	99	55	1,49	cyclictest	364	-21	snmpd	08:10:05	2
3179266	99	55	1,49	cyclictest	364	-21	snmpd	07:22:28	2
3179264	99	55	39,12	cyclictest	1	-21	systemd	09:00:00	1
3179259	99	54	32,2	cyclictest	0	-21	swapper/0	10:30:02	0
3179259	99	54	27,21	cyclictest	3185435	-21	diskmemload	10:15:01	0
3179259	99	54	27,12	cyclictest	3205435	-21	ssh	09:54:48	0
3179259	99	54	27,11	cyclictest	3262269	-21	ssh	12:01:25	0
3179259	99	54	17,8	cyclictest	3250301	-21	modprobe	11:35:00	0
3179259	99	54	1,5	cyclictest	0	-21	swapper/0	11:10:01	0
3179259	99	53	4,32	cyclictest	169	50	irq/224-8000000	09:30:02	0
3179259	99	53	35,13	cyclictest	3467602	-21	systemd-journal	10:40:00	0
3179259	99	53	32,7	cyclictest	12	-21	ksoftirqd/0	11:17:35	0
3179259	99	53	26,11	cyclictest	3235039	-21	ssh	11:00:27	0
3179259	99	53	25,12	cyclictest	3273198	-21	ssh	12:27:14	0
3179259	99	52	25,12	cyclictest	3241080	-21	ssh	11:14:22	0
3179259	99	52	2,42	cyclictest	3245816	-21	sh	11:24:59	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2021-09-01 - 00:33