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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 the 792 highest latencies:

System rackfslot4s.osadl.org (updated Wed Mar 18, 2026 12:44:35)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
24282	2	135	0,2	chrt	24265	-21	apt-get	07:20:17	0
3352	2	128	0,4	chrt	2658	-21	apt-get	08:31:03	0
12274	2	128	0,2	sleep0	12275	-21	ssh	09:34:34	0
23429	2	126	0,3	chrt	23428	-21	/usr/sbin/munin	09:50:57	0
5413	2	124	0,2	chrt	5415	-21	proc_pri	10:12:11	0
30417	2	124	0,2	sleep0	30418	-21	runrttasks	11:38:33	0
13970	2	122	0,3	chrt	13968	-21	/usr/sbin/munin	09:36:28	0
1097	2	120	0,2	chrt	1094	-21	find	09:17:21	0
9036	2	117	0,4	chrt	9037	-21	seq	09:29:50	0
394	2	117	0,2	chrt	31838	-21	apt-get	12:31:16	0
22005	2	117	0,2	chrt	22006	-21	runrttasks	12:15:09	0
16960	2	116	0,2	chrt	16961	-21	chrt	08:51:13	0
26732	2	115	0,2	sleep0	26730	-21	ssh	10:44:32	0
16472	2	115	0,2	chrt	16474	-21	modprobe	08:00:00	0
537	2	114	0,3	chrt	538	-21	runrttasks	10:53:38	0
4177	2	114	0,3	chrt	4178	-21	runrttasks	11:47:30	0
28756	2	114	0,2	chrt	28758	-21	processes	07:26:23	0
5407	2	113	0,2	chrt	5317	-21	ssh	11:01:01	0
19889	2	113	0,2	sleep0	19890	-21	/usr/sbin/munin	12:11:14	0
16840	2	113	0,2	chrt	16841	-21	runrttasks	11:17:53	0
15869	2	112	0,2	sleep0	15917	-21	fschecks_count	12:05:50	0
13928	2	112	0,2	sleep0	13931	-21	cat	10:25:20	0
1672	2	111	0,1	sleep0	1673	-21	runrttasks	11:44:27	0
11240	2	111	0,1	sleep0	11241	-21	runrttasks	11:10:05	0
21796	2	110	0,3	chrt	21797	-21	sh	10:36:29	0
11040	2	109	0,1	sleep0	11044	-21	runrttasks	11:58:06	0
10679	2	109	0,2	chrt	10680	-21	tail	10:20:35	0
30011	2	108	0,2	sleep0	30012	-21	runrttasks	10:49:26	0
2971	2	107	0,3	chrt	2970	-21	awk	09:20:38	0
31585	2	105	0,2	chrt	31586	-21	sh	10:02:27	0
23526	2	104	0,3	chrt	23525	-21	/usr/sbin/munin	08:10:42	0
23037	2	96	0,2	sleep0	23038	-21	seq	11:27:12	0
7305	2	91	0,2	sleep0	7308	-21	sort	11:52:17	0
16201	2	87	0,1	sleep0	16202	-21	chrt	09:40:34	0
8352	2	82	0,2	sleep0	8349	-21	df	11:05:36	0
20330	2	80	0,1	sleep0	20332	-21	chrt	10:35:04	0
20756	2	79	0,2	sleep0	20757	-21	seq	09:46:37	0
21473	2	78	0,2	sleep0	21474	-21	chrt	07:15:32	0
25561	2	77	0,2	sleep0	25564	-21	aten2.4_rfpower	12:20:32	0
12076	2	76	0,2	sleep0	12074	-21	vmstat	07:51:31	0
4019	2	75	0,1	sleep0	4020	-21	seq	10:59:03	0
27568	2	75	0,2	sleep0	27567	-21	seq	11:34:41	0
17879	90	74	5,12	cyclictest	1624	-21	idleruntime	07:35:37	0
17879	90	73	4,25	cyclictest	7177	-21	ntpq	08:35:52	0
17603	2	73	8,53	sleep0	17610	-21	sleep	07:09:28	0
19257	2	72	0,1	sleep0	19255	-21	ntp_states	07:11:10	0
17879	90	72	10,11	cyclictest	281	-21	in:imuxsock	10:09:26	0
4142	2	71	0,1	sleep0	4143	-21	cat	12:36:09	0
30034	2	71	0,2	sleep0	30008	-21	ntpq	09:12:09	0
877	2	69	0,2	sleep0	879	-21	chrt	08:26:02	0
31279	2	69	0,2	sleep0	31280	-21	ssh	12:28:43	0
10214	2	69	0,2	sleep0	10215	-21	chrt	10:20:03	0
17879	90	68	5,11	cyclictest	28901	-21	munin-run	08:20:00	0
10005	2	68	0,2	sleep0	10006	-21	seq	08:40:57	0
17879	90	67	5,10	cyclictest	18296	-21	users	08:01:30	0
17879	90	67	17,16	cyclictest	0	-21	swapper	11:23:19	0
29470	2	65	0,3	chrt	29472	-21	latency_hist	10:00:04	0
17879	90	65	4,9	cyclictest	13509	-21	ntpq	12:01:42	0
17879	90	63	5,10	cyclictest	5181	-21	memory	07:40:47	0
17879	90	63	5,10	cyclictest	21040	-21	ntp_states	08:06:15	0
7715	2	62	0,2	sleep0	7717	-21	grep	07:45:34	0
24886	2	57	0,1	sleep0	24910	-21	apt-config	09:05:05	0
17879	90	44	17,18	cyclictest	412	-21	snmpd	08:45:33	0
17879	90	43	5,18	cyclictest	30157	-21	ntpq	08:20:55	0
17879	90	42	5,9	cyclictest	26769	-21	ntpq	09:06:59	0
17879	90	42	4,28	cyclictest	31710	-21	ntpq	07:31:13	0
17879	90	40	11,12	cyclictest	19058	-21	cpu	08:55:26	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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