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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 100 highest latencies:

System rackfslot4s.osadl.org (updated Wed Jun 10, 2026 00:44:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1047	2	127	0,3	chrt	1049	-21	chrt	23:01:01	0
9964	2	123	0,2	sleep0	9969	-21	seq	23:14:26	0
29326	2	122	0,2	chrt	29313	-21	ntpq	00:31:27	0
8264	2	121	0,2	chrt	8265	-21	sleep	00:00:33	0
645	2	120	0,2	chrt	646	-21	sh	20:31:25	0
6306	2	119	0,2	chrt	6307	-21	runrttasks	23:08:36	0
30148	2	117	0,2	chrt	30150	-21	chrt	23:44:56	0
6092	2	116	0,3	chrt	6089	-21	ssh	23:56:36	0
3162	2	116	0,2	chrt	3164	-21	ntp_offset	21:26:48	0
10344	2	116	0,3	chrt	10343	-21	/usr/sbin/munin	21:37:26	0
24003	2	112	0,2	sleep0	24005	-21	latency_hist	21:10:06	0
13430	2	112	0,2	chrt	13431	-21	runrttasks	20:51:56	0
6699	2	111	0,2	chrt	6700	-21	sleep	20:41:13	0
32511	2	111	0,2	chrt	32512	-21	ssh	21:22:15	0
21900	2	106	0,3	chrt	21899	-21	mailstats	19:21:25	0
15161	2	106	0,2	sleep0	15162	-21	chrt	22:33:12	0
16962	2	105	0,2	chrt	16963	-21	ls	23:25:05	0
29827	2	104	0,2	chrt	29828	-21	ssh	21:18:17	0
25668	2	104	0,2	chrt	25667	-21	awk	20:20:25	0
21611	2	104	0,3	chrt	21612	-21	collect2	23:31:18	0
12577	2	104	0,2	chrt	12579	-21	ssh	23:17:43	0
26072	2	101	0,2	chrt	26073	-21	switchtime	21:12:33	0
20013	2	99	0,2	sleep0	20016	-21	sed	00:17:23	0
22758	2	93	0,1	sleep0	22759	-21	chrt	22:45:09	0
20945	2	90	0,2	sleep0	20946	-21	seq	22:41:47	0
19905	2	89	0,2	sleep0	19906	-21	seq	23:29:19	0
1933	2	89	0,2	sleep0	1934	-21	seq	22:13:23	0
16167	2	89	0,1	sleep0	16168	-21	chrt	20:05:19	0
24873	2	83	0,2	sleep0	24875	-21	missed_timers	23:36:14	0
8275	2	78	0,1	sleep0	8276	-21	latency_hist	21:35:05	0
24138	2	78	0,2	sleep0	24139	-21	seq	00:24:12	0
23733	2	78	0,2	sleep0	23736	-21	wc	21:57:27	0
9143	2	77	0,2	sleep0	9144	-21	chrt	22:24:41	0
23506	2	74	0,2	sleep0	23507	-21	seq	20:16:04	0
21572	2	73	0,2	sleep0	21573	-21	munin-plugin-st	21:55:00	0
12072	2	72	0,2	sleep0	12074	-21	grep	21:40:38	0
31361	2	70	0,2	sleep0	31362	-21	seq	20:29:43	0
27245	2	66	0,1	sleep0	27246	-21	chrt	22:02:35	0
31920	2	62	0,1	sleep0	31923	-21	fschecks_time	00:35:51	0
30012	2	58	0,1	sleep0	30013	-21	chrt	22:06:57	0
9836	2	57	0,2	sleep0	9840	-21	aten2.4_rfpower	19:55:24	0
335	2	55	0,1	sleep0	336	-21	seq	19:40:08	0
13816	90	52	20,21	cyclictest	0	-21	swapper	00:13:06	0
13816	90	51	24,20	cyclictest	13209	-21	grep	00:07:18	0
11367	2	51	25,16	sleep0	11430	-21	/usr/sbin/munin	19:05:32	0
2636	2	49	0,3	chrt	2634	-21	/usr/sbin/munin	20:35:29	0
13816	90	49	14,23	cyclictest	24809	-21	sshd	00:25:29	0
2883	2	48	0,2	sleep0	2884	-21	chrt	23:52:02	0
13816	90	48	17,22	cyclictest	0	-21	swapper	22:58:38	0
11177	2	48	0,3	chrt	11174	-21	/usr/sbin/munin	22:27:11	0
19230	2	47	0,2	chrt	19228	-21	/usr/sbin/munin	21:01:23	0
17350	2	46	0,2	chrt	17351	-21	runrttasks	22:36:20	0
13816	90	46	19,18	cyclictest	32024	-21	ssh	23:47:05	0
13816	90	46	16,20	cyclictest	16816	-21	awk	21:47:17	0
13816	90	46	15,22	cyclictest	0	-21	swapper	22:54:23	0
13816	90	45	17,20	cyclictest	17813	-21	sh	19:16:16	0
13816	90	45	14,22	cyclictest	29710	-21	/usr/sbin/munin	19:36:25	0
13816	90	44	21,14	cyclictest	24593	-21	ntpq	19:25:57	0
13816	90	43	20,13	cyclictest	2800	-21	apt-get	22:15:12	0
13816	90	43	20,13	cyclictest	27864	-21	ntpq	19:31:13	0
13816	90	43	12,22	cyclictest	4766	-21	ntp_states	19:46:17	0
13816	90	42	21,14	cyclictest	9782	-21	ntpq	20:46:13	0
13816	90	42	20,13	cyclictest	14764	-21	sh	20:55:17	0
13816	90	42	16,16	cyclictest	6577	-21	apt-get	19:50:16	0
13816	90	42	10,14	cyclictest	14570	-21	ntp_states	20:02:02	0
13816	90	41	20,14	cyclictest	19882	-21	if_eth2	20:10:43	0
13816	90	41	15,16	cyclictest	13943	-21	apt-get	19:10:17	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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