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Default latency plot of shadow in rack #f, 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.

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 all highest latencies:

System rackfslot4s.osadl.org (updated Tue Jul 07, 2026 12:44:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
17371	2	123	0,2	sleep0	17373	-21	cut	09:50:51	0
21680	2	122	0,2	sleep0	21681	-21	seq	12:23:18	0
16325	2	122	0,2	chrt	16322	-21	ntpq	11:26:38	0
5729	2	119	0,3	chrt	5728	-21	/usr/sbin/munin	11:11:01	0
2800	2	118	0,3	chrt	2801	-21	runrttasks	09:29:17	0
20730	2	117	0,3	chrt	20731	-21	chrt	08:15:26	0
16537	2	117	0,2	chrt	16536	-21	/usr/sbin/munin	07:15:48	0
30539	2	114	0,1	chrt	30538	-21	seq	10:10:48	0
24064	2	113	0,4	chrt	24062	-21	sshd	07:28:09	0
18889	2	113	0,2	chrt	18885	-21	aten2.4-expect	07:20:24	0
25803	2	112	0,2	sleep0	25805	-21	cut	11:41:25	0
25467	2	112	0,2	chrt	25466	-21	seq	12:29:28	0
13071	2	112	0,2	chrt	13072	-21	sleep	11:21:44	0
2353	2	111	0,2	chrt	2352	-21	seq	11:55:04	0
16433	2	109	0,2	chrt	16434	-21	sleep	08:08:05	0
21206	2	108	0,2	chrt	21204	-21	ls	10:45:36	0
20089	2	108	0,3	chrt	20090	-21	runrttasks	10:43:41	0
5122	2	107	0,2	chrt	5123	-21	awk	08:41:25	0
29309	2	107	0,2	sleep0	29310	-21	aten2.4_rfpower	09:20:35	0
24669	2	105	0,3	chrt	24670	-21	runrttasks	10:01:20	0
32027	2	103	0,3	chrt	32028	-21	sleep	08:32:38	0
13752	2	102	0,2	chrt	13753	-21	aten2.4_rfpower	09:45:35	0
9003	2	100	0,2	chrt	9004	-21	sh	09:38:11	0
10581	2	98	0,2	sleep0	10582	-21	seq	08:50:43	0
26840	2	96	0,2	sleep0	26841	-21	seq	08:25:27	0
25809	2	92	0,2	sleep0	25810	-21	seq	09:15:24	0
7379	2	89	0,2	sleep0	7380	-21	munin-plugin-st	10:24:59	0
32474	2	84	0,1	sleep0	32477	-21	latency_hist	12:40:09	0
6234	2	82	0,2	chrt	6219	-21	ntpq	07:51:21	0
28611	2	76	0,2	sleep0	28614	-21	missed_timers	10:56:15	0
12351	90	75	6,57	cyclictest	30784	-21	apt-get	11:00:20	0
12351	90	74	5,59	cyclictest	3799	-21	ssh	11:56:48	0
12351	90	74	4,60	cyclictest	24735	-21	ssh	09:13:10	0
12351	90	73	5,47	cyclictest	27957	-21	ntpq	10:06:19	0
12351	90	73	13,52	cyclictest	29394	-21	kernelversion	11:46:10	0
12351	90	73	12,53	cyclictest	11529	-21	hddtemp_smartct	10:30:58	0
10077	2	73	0,2	sleep0	10078	-21	chrt	09:40:12	0
12351	90	72	6,57	cyclictest	15681	-21	chrt	10:36:48	0
12351	90	72	5,57	cyclictest	19557	-21	seq	11:31:30	0
12351	90	72	5,56	cyclictest	12692	-21	rm	12:10:22	0
12351	90	72	5,46	cyclictest	31142	-21	/usr/sbin/munin	07:40:36	0
12351	90	72	4,48	cyclictest	13432	-21	runrttasks	08:55:35	0
12351	90	72	11,52	cyclictest	11283	-21	cat	12:07:22	0
20505	2	71	0,2	sleep0	20506	-21	chrt	09:55:38	0
12351	90	71	6,55	cyclictest	7545	-21	ntp_states	12:01:53	0
12351	90	71	6,55	cyclictest	4903	-21	ntpq	09:32:01	0
12351	90	71	5,56	cyclictest	9486	-21	ntpq	11:16:22	0
12351	90	71	4,48	cyclictest	2847	-21	timerandwakeup	10:17:20	0
12351	90	71	13,50	cyclictest	25380	-21	fschecks_time	07:30:39	0
12351	90	70	5,56	cyclictest	2126	-21	python3	08:36:28	0
12351	90	70	5,55	cyclictest	7536	-21	ps	08:45:46	0
12351	90	70	5,46	cyclictest	24535	-21	memory	08:20:52	0
12351	90	70	5,45	cyclictest	29168	-21	ntpq	07:36:05	0
12351	90	70	5,45	cyclictest	23130	-21	sh	11:36:59	0
12351	90	70	4,56	cyclictest	8214	-21	ssh	10:25:56	0
12351	90	70	4,46	cyclictest	12383	-21	ntpq	08:01:15	0
9685	2	69	8,14	sleep0	9763	-21	fschecks_time	07:05:28	0
12351	90	69	6,54	cyclictest	412	-21	snmpd	07:55:05	0
12351	90	69	4,56	cyclictest	16168	-21	runrttasks	09:00:12	0
12351	90	69	4,55	cyclictest	25425	-21	runrttasks	10:51:26	0
12351	90	69	3,56	cyclictest	17282	-21	ssh	12:16:33	0
12351	90	69	13,45	cyclictest	17307	-21	/usr/sbin/munin	08:10:40	0
12351	90	68	5,52	cyclictest	12491	-21	apt-get	07:10:17	0
12351	90	68	5,42	cyclictest	2304	-21	hddtemp_smartct	07:45:39	0
12351	90	68	4,55	cyclictest	412	-21	snmpd	11:06:15	0
12351	90	68	4,54	cyclictest	436	-21	runrttasks	12:34:52	0
12351	90	67	4,54	cyclictest	19403	-21	runrttasks	09:05:25	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2024-02-27 - 12:39