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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 highest latencies:

System rackfslot4s.osadl.org (updated Wed Apr 22, 2026 00:44:35)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
25495	2	141	0,2	sleep0	25496	-21	seq	22:27:55	0
26929	2	129	0,3	chrt	26930	-21	sleep	23:19:03	0
14289	2	121	0,2	chrt	14290	-21	switchtime	20:31:27	0
31191	2	120	0,3	chrt	31190	-21	/usr/sbin/munin	22:36:12	0
11323	2	118	0,2	chrt	11324	-21	chrt	23:44:32	0
11075	2	114	0,3	chrt	11077	-21	runrttasks	19:35:20	0
13646	2	113	0,2	sleep0	13649	-21	irqrtprio	00:36:08	0
610	2	112	0,2	chrt	611	-21	runrttasks	20:10:25	0
26286	2	112	0,2	chrt	26263	-21	ntpq	00:06:23	0
13167	2	112	0,2	chrt	13168	-21	sleep	23:46:42	0
6401	2	111	0,2	chrt	6402	-21	runrttasks	20:20:00	0
16419	2	111	0,1	sleep0	16426	-21	seq	23:02:45	0
5458	2	110	0,2	sleep0	5460	-21	sshd	00:24:03	0
32411	2	109	0,2	sleep0	32412	-21	timerandwakeup	19:16:29	0
11157	2	109	0,2	chrt	11158	-21	cat	22:06:17	0
32018	2	108	0,3	chrt	32019	-21	ssh	21:49:58	0
30325	2	108	0,2	chrt	30327	-21	/usr/sbin/munin	20:05:42	0
16196	2	108	0,4	chrt	16197	-21	sleep	22:14:32	0
24108	2	107	0,1	sleep0	24155	-21	cat	21:37:28	0
22119	2	107	0,2	chrt	22120	-21	chrt	22:22:46	0
4355	2	106	0,2	sleep0	4356	-21	chrt	23:33:49	0
8407	2	105	0,2	chrt	8408	-21	runrttasks	21:14:40	0
3380	2	105	0,4	chrt	3381	-21	sleep	22:43:23	0
28536	2	101	0,1	sleep0	28541	-21	seq	21:44:38	0
23226	2	101	0,2	sleep0	23231	-21	seq	23:13:10	0
7002	2	96	0,2	sleep0	7004	-21	chrt	20:20:34	0
10504	2	96	0,2	sleep0	10505	-21	chrt	21:17:18	0
29910	2	95	0,2	sleep0	29911	-21	cat	22:35:04	0
4487	2	94	0,3	chrt	4489	-21	aten2.4_rfpower	22:45:33	0
14747	2	94	0,1	sleep0	14748	-21	chrt	21:23:45	0
21391	2	90	0,1	sleep0	21392	-21	chrt	23:59:48	0
12846	2	90	0,2	sleep0	12850	-21	wc	22:57:22	0
1073	2	88	0,2	sleep0	1074	-21	chrt	00:17:16	0
17542	2	85	0,2	sleep0	17543	-21	chrt	19:45:26	0
17134	2	85	0,2	sleep0	17135	-21	chrt	21:27:05	0
2633	2	80	0,2	chrt	2617	-21	ntpq	19:21:00	0
3757	2	75	0,2	sleep0	3759	-21	awk	21:06:25	0
2231	2	74	0,1	sleep0	2232	-21	seq	21:53:22	0
20870	2	74	0,2	sleep0	20872	-21	wc	21:32:28	0
29996	2	71	0,2	sleep0	29997	-21	collect2	00:12:06	0
27821	2	71	0,2	sleep0	27823	-21	cut	23:20:34	0
19461	2	70	0,1	sleep0	19462	-21	chrt	22:19:24	0
7579	2	67	0,2	sleep0	7580	-21	chrt	22:50:10	0
3350	2	67	0,2	sleep0	3351	-21	readlink	21:55:19	0
5467	2	66	0,2	sleep0	5468	-21	cpuspeed	23:35:40	0
10569	2	66	0,2	sleep0	10571	-21	sort	00:31:13	0
23077	2	59	4,8	sleep0	23082	-21	ssh	00:01:36	0
9500	2	58	4,37	sleep0	9495	-21	ssh	22:04:24	0
15281	2	58	3,8	sleep0	15289	-21	ntpq	19:41:02	0
841	2	56	0,2	sleep0	842	-21	runrttasks	21:01:31	0
26792	2	55	2,7	sleep0	26876	-21	grep	20:00:26	0
26307	2	55	7,14	sleep0	0	-21	swapper	19:06:41	0
25446	2	54	3,7	sleep0	25408	-21	apt-get	20:50:19	0
17960	2	54	0,2	sleep0	17961	-21	seq	23:05:38	0
8510	2	53	0,2	sleep0	8513	-21	grep	19:31:17	0
6059	2	52	0,1	sleep0	6060	-21	runrttasks	00:25:10	0
5466	2	50	0,2	sleep0	5467	-21	chrt	19:25:44	0
20524	2	50	0,1	sleep0	20527	-21	sort	20:41:26	0
31106	2	47	2,36	sleep0	31146	-21	sh	23:25:34	0
17309	2	43	0,3	sleep0	17306	-21	ssh	23:52:58	0
27592	90	42	4,10	cyclictest	28913	-21	ntpq	19:11:06	0
27592	90	41	4,29	cyclictest	26384	-21	munin-run	20:00:00	0
27592	90	41	4,11	cyclictest	23312	-21	cat	19:55:01	0
27592	90	41	4,10	cyclictest	29592	-21	ntpq	20:55:57	0
10114	2	41	0,2	sleep0	10116	-21	fschecks_time	20:25:36	0
27592	90	40	4,8	cyclictest	17093	-21	ntpq	20:36:11	0
27592	90	40	4,18	cyclictest	23119	-21	hddtemp_smartct	20:46:27	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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