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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 Thu May 07, 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
24408	2	126	0,3	chrt	24409	-21	/usr/sbin/munin	21:21:12	0
14456	2	124	0,2	chrt	14453	-21	ntpq	21:06:04	0
28527	2	123	0,2	sleep0	28529	-21	cut	22:16:03	0
9510	2	117	0,3	chrt	9511	-21	sh	19:15:23	0
31096	2	115	0,2	chrt	31097	-21	/usr/sbin/munin	21:31:14	0
16198	2	115	0,2	sleep0	16233	-21	ntpq	22:46:14	0
29606	2	114	0,2	sleep0	29607	-21	gcc	23:06:24	0
21234	2	113	0,2	chrt	21238	-21	irqrtprio	21:16:52	0
9783	2	112	0,2	chrt	9785	-21	fschecks_time	23:25:52	0
29661	2	112	0,2	chrt	29662	-21	runrttasks	21:29:53	0
30020	2	111	0,2	sleep0	30022	-21	cut	23:56:06	0
22808	2	111	0,2	chrt	22811	-21	grep	23:45:34	0
22327	2	111	0,2	chrt	22328	-21	sleep	00:32:52	0
22267	2	111	0,2	chrt	22268	-21	seq	23:44:58	0
18118	2	111	0,3	chrt	18119	-21	runrttasks	21:12:15	0
17626	2	111	0,2	chrt	17627	-21	seq	20:20:09	0
6631	2	110	0,2	chrt	6632	-21	apt-config	00:10:08	0
3312	2	109	0,2	chrt	3313	-21	ssh	22:26:56	0
1749	2	109	0,3	chrt	1751	-21	chrt	20:45:46	0
12521	2	109	0,4	chrt	12522	-21	runrttasks	23:30:12	0
6292	2	108	0,1	sleep0	6293	-21	df_inode	23:20:40	0
16761	2	108	0,1	sleep0	16763	-21	cut	23:36:05	0
755	2	107	0,1	sleep0	756	-21	chrt	00:01:01	0
6888	2	106	0,2	chrt	6889	-21	latency_hist	20:55:00	0
16764	2	104	0,1	sleep0	16765	-21	runrttasks	19:26:02	0
26979	2	101	0,2	chrt	26980	-21	sleep	19:42:35	0
13698	2	98	0,2	sleep0	13699	-21	cat	22:42:21	0
9594	2	97	0,1	sleep0	9597	-21	timerandwakeup	20:06:28	0
8605	2	94	0,2	sleep0	8606	-21	seq	20:56:27	0
27097	2	91	0,2	sleep0	27098	-21	seq	22:14:29	0
19638	2	91	0,2	sleep0	19639	-21	chrt	22:02:53	0
4316	2	83	0,2	sleep0	4317	-21	/usr/sbin/munin	21:40:32	0
25966	2	72	0,2	sleep0	25967	-21	basename	23:50:32	0
10758	2	70	0,2	sleep0	10759	-21	chrt	22:38:14	0
9184	2	68	6,10	sleep0	9209	-21	apt	19:15:00	0
31077	2	68	0,1	sleep0	31080	-21	sed	20:40:43	0
6917	2	63	0,2	sleep0	6918	-21	runrttasks	22:32:16	0
21239	2	63	0,2	sleep0	21240	-21	seq	20:25:31	0
14972	2	63	0,2	sleep0	14975	-21	irqrtprio	21:56:05	0
12604	2	62	0,2	sleep0	12605	-21	seq	21:52:16	0
21979	2	61	0,1	sleep0	21980	-21	seq	22:06:22	0
25747	2	59	0,2	sleep0	25746	-21	seq	00:38:08	0
2872	2	57	3,9	sleep0	2883	-21	ntpq	19:55:58	0
2407	2	57	4,9	sleep0	2403	-21	ntpq	21:37:05	0
26538	2	56	0,2	sleep0	26539	-21	chrt	23:01:51	0
21595	2	55	3,8	sleep0	21599	-21	sleep	19:34:57	0
19028	2	54	2,7	sleep0	19062	-21	if_err_can0	22:51:00	0
11391	2	54	0,2	sleep0	11392	-21	/usr/sbin/munin	00:16:25	0
6165	2	52	0,1	sleep0	6167	-21	latency_hist	19:10:03	0
28141	2	52	5,8	sleep0	28149	-21	ntpq	20:35:55	0
24664	2	52	0,2	sleep0	24671	-21	irqrtprio	20:30:42	0
10094	2	52	3,6	sleep0	10097	-21	seq	21:48:55	0
30986	2	51	0,3	chrt	30863	-21	apt-get	22:20:29	0
6145	90	47	18,22	cyclictest	0	-21	swapper	00:27:45	0
6145	90	47	13,25	cyclictest	0	-21	swapper	23:10:06	0
21865	2	47	0,2	sleep0	21866	-21	runrttasks	19:35:19	0
6145	90	46	17,22	cyclictest	0	-21	swapper	00:22:46	0
5669	2	46	0,2	sleep0	5671	-21	chrt	23:20:01	0
4456	2	46	0,3	chrt	4455	-21	/usr/sbin/munin	00:06:14	0
5361	2	45	0,2	chrt	5362	-21	runrttasks	20:00:34	0
22589	2	43	0,3	sleep0	22593	-21	sed	22:56:04	0
17415	2	43	0,2	sleep0	17416	-21	chrt	20:20:03	0
6145	90	41	4,18	cyclictest	29326	-21	ntpq	19:46:16	0
6145	90	41	15,19	cyclictest	32554	-21	wc	19:51:21	0
6145	90	41	13,12	cyclictest	13178	-21	runrttasks	20:12:38	0
6145	90	40	5,28	cyclictest	13809	-21	ntp_states	19:21:17	0
6145	90	39	3,17	cyclictest	10558	-21	diskstats	21:00:33	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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