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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 Thu Dec 18, 2025 12:44:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
8863	2	126	0,2	chrt	8861	-21	aten2.4_rfpower	11:15:32	0
25981	2	125	0,2	chrt	25973	-21	ntp_states	07:31:13	0
29271	2	123	0,2	chrt	29272	-21	chrt	10:08:49	0
25296	2	121	0,3	chrt	25297	-21	timerandwakeup	10:02:24	0
8032	2	120	0,4	chrt	8025	-21	ntpq	12:02:10	0
22788	2	120	0,3	chrt	22791	-21	cron	12:25:00	0
906	2	119	0,3	chrt	905	-21	/usr/sbin/munin	11:51:18	0
6708	2	119	0,3	chrt	6705	-21	ntpq	11:11:27	0
13245	2	118	0,2	chrt	13247	-21	stty	12:10:37	0
3276	2	116	0,2	chrt	3277	-21	seq	09:30:33	0
23307	2	116	0,2	sleep0	23309	-21	grep	09:11:17	0
15319	2	113	0,3	chrt	15320	-21	sleep	09:47:37	0
10100	2	113	0,2	chrt	10101	-21	runrttasks	10:28:24	0
9777	2	112	0,3	chrt	9778	-21	chrt	08:50:17	0
32140	2	112	0,2	sleep0	32141	-21	irqrtprio	11:01:05	0
5380	2	111	0,3	chrt	5382	-21	head	07:51:16	0
31780	2	110	0,2	sleep0	31781	-21	runrttasks	09:24:20	0
27479	2	110	0,2	sleep0	27480	-21	chrt	09:17:26	0
1011	2	110	0,2	chrt	1012	-21	sleep	10:15:15	0
32687	2	109	0,2	sleep0	32691	-21	chrt	07:41:46	0
21458	2	109	0,3	chrt	21459	-21	runrttasks	07:25:02	0
27726	2	107	0,3	sleep0	27727	-21	chrt	10:55:01	0
10294	2	107	0,2	chrt	10296	-21	sh	12:05:53	0
19467	2	104	0,3	chrt	19468	-21	runrttasks	09:54:13	0
3089	2	103	0,2	chrt	3091	-21	latency_hist	09:30:05	0
3792	2	99	0,2	sleep0	3795	-21	tail	08:40:27	0
5092	2	98	0,2	sleep0	5093	-21	seq	11:09:44	0
10868	2	98	0,2	sleep0	10870	-21	runrttasks	07:07:53	0
17435	2	97	0,2	chrt	17436	-21	latency	12:16:13	0
9682	2	95	0,2	sleep0	9683	-21	chrt	08:50:02	0
16943	2	95	0,2	sleep0	16942	-21	uname	11:27:00	0
23836	2	93	0,2	sleep0	23837	-21	runrttasks	10:48:42	0
7242	2	91	0,2	sleep0	7243	-21	cat	09:36:05	0
11914	2	86	0,2	sleep0	11915	-21	seq	10:31:32	0
3757	2	85	0,2	sleep0	3755	-21	if_err_eth2	11:56:02	0
20385	2	83	0,2	sleep0	20386	-21	gcc	11:31:50	0
23173	2	82	0,1	sleep0	23176	-21	cut	11:36:06	0
11636	2	79	0,2	sleep0	11637	-21	perl	08:00:36	0
4427	2	77	0,2	sleep0	4428	-21	seq	07:49:50	0
21680	2	75	0,2	sleep0	21681	-21	seq	08:16:10	0
32159	2	73	0,2	sleep0	32161	-21	chrt	12:38:40	0
28061	2	72	0,2	sleep0	28062	-21	aten2.4-expect	07:35:26	0
13066	2	70	0,2	sleep0	13065	-21	ls	09:45:04	0
14650	2	65	0,2	sleep0	14651	-21	dpkg	10:35:19	0
24777	2	59	0,3	sleep0	24778	-21	seq	08:21:06	0
14671	2	58	0,2	sleep0	14721	-21	fschecks_time	08:05:35	0
11700	90	56	29,21	cyclictest	14403	-21	find	08:56:27	0
11700	90	55	25,21	cyclictest	17001	-21	ntpq	09:00:51	0
11700	90	53	24,21	cyclictest	27658	-21	ntp_kernel_pll_	12:31:33	0
11700	90	52	25,16	cyclictest	30077	-21	apt-get	10:10:39	0
11700	90	52	21,22	cyclictest	0	-21	swapper	10:59:21	0
11700	90	52	21,11	cyclictest	16585	-21	ld	07:16:49	0
11700	90	52	17,16	cyclictest	28869	-21	seq	11:45:17	0
11700	90	51	21,22	cyclictest	26108	-21	latency_hist	12:30:04	0
11700	90	51	21,20	cyclictest	18313	-21	runrttasks	08:10:49	0
11700	90	51	19,22	cyclictest	19280	-21	sleep	10:41:31	0
11700	90	51	18,24	cyclictest	26696	-21	/usr/sbin/munin	08:25:38	0
11700	90	50	23,19	cyclictest	12152	-21	df	07:10:25	0
11700	90	50	20,22	cyclictest	12141	-21	chrt	11:20:22	0
11700	90	50	19,23	cyclictest	21242	-21	seq	09:56:20	0
11700	90	50	19,13	cyclictest	22759	-21	runrttasks	07:26:02	0
11700	90	50	19,12	cyclictest	26712	-21	/usr/sbin/munin	11:41:18	0
11700	90	50	17,13	cyclictest	5420	-21	cut	10:21:10	0
19411	2	49	0,3	chrt	19409	-21	/usr/sbin/munin	09:05:27	0
11700	90	49	23,16	cyclictest	8006	-21	apt-get	07:55:20	0
11700	90	48	28,13	cyclictest	30965	-21	ntpq	08:31:06	0
11700	90	46	24,13	cyclictest	1767	-21	ntpq	08:36:24	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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