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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 May 06, 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
6381	2	127	0,2	chrt	6382	-21	runrttasks	23:08:10	0
25205	2	125	0,2	chrt	25206	-21	seq	00:25:35	0
17241	2	124	0,2	chrt	17240	-21	/usr/sbin/munin	22:36:00	0
25321	2	121	0,3	chrt	23956	-21	/usr/sbin/munin	23:36:32	0
12371	2	121	0,3	chrt	11713	-21	apt-get	20:50:56	0
23047	2	119	0,3	chrt	23042	-21	ntpq	00:21:42	0
20767	2	119	0,1	sleep0	20778	-21	sed	21:52:24	0
17815	2	118	0,3	chrt	17534	-21	apt-get	19:16:01	0
10184	2	118	0,3	chrt	10186	-21	runrttasks	23:14:21	0
3860	2	117	0,2	chrt	3859	-21	/usr/sbin/munin	22:15:53	0
12518	2	117	0,2	chrt	12515	-21	python3	23:17:15	0
30255	2	116	0,2	chrt	30253	-21	ld	22:06:17	0
17986	2	115	0,2	sleep0	17987	-21	seq	23:25:57	0
28107	2	114	0,2	sleep0	28106	-21	hostname	21:15:34	0
18239	2	114	0,1	sleep0	18240	-21	chrt	21:48:55	0
23536	2	113	0,2	chrt	23534	-21	ls	21:56:13	0
20975	2	111	0,1	sleep0	20981	-21	sshd	00:19:04	0
30906	2	109	0,2	sleep0	30908	-21	kernelversion	22:56:10	0
30519	2	108	0,2	chrt	30520	-21	sh	00:32:57	0
26338	2	107	0,2	sleep0	26339	-21	awk	21:12:24	0
1025	2	106	0,3	chrt	1026	-21	runrttasks	21:22:48	0
4492	2	103	0,2	chrt	4493	-21	sleep	20:37:18	0
15963	2	102	0,2	chrt	15964	-21	sh	19:11:48	0
14702	2	102	0,2	chrt	14703	-21	sleep	21:43:28	0
831	2	97	0,2	sleep0	833	-21	seq	23:48:56	0
17697	2	94	0,1	sleep0	17698	-21	chrt	00:14:09	0
23653	2	92	0,2	sleep0	23657	-21	latency_hist	19:25:02	0
25472	2	87	0,2	sleep0	25473	-21	chrt	22:48:00	0
1687	2	84	0,2	sleep0	1688	-21	basename	23:50:33	0
11347	2	82	0,2	sleep0	11348	-21	chrt	00:04:50	0
18344	2	81	0,2	sleep0	18345	-21	seq	21:00:12	0
13299	2	80	0,2	sleep0	13300	-21	runrttasks	22:30:24	0
14070	90	79	18,51	cyclictest	22554	-21	runrttasks	22:43:55	0
13654	2	79	0,2	sleep0	13655	-21	chrt	00:07:26	0
19784	2	78	0,2	sleep0	19785	-21	seq	20:10:27	0
14070	90	78	17,54	cyclictest	726	-21	apt-get	23:00:32	0
14070	90	76	15,9	cyclictest	23760	-21	ssh	23:35:04	0
2501	2	75	0,2	sleep0	2502	-21	runrttasks	20:35:03	0
14070	90	75	6,21	cyclictest	32050	-21	ssh	00:35:50	0
14070	90	74	7,12	cyclictest	30323	-21	diskstats	19:35:33	0
14070	90	74	5,18	cyclictest	5615	-21	sleep	21:30:28	0
14082	2	73	0,2	sleep0	14083	-21	runrttasks	20:00:50	0
14070	90	73	5,19	cyclictest	15549	-21	df_inode	20:55:30	0
14070	90	73	5,16	cyclictest	27809	-21	ntpq	22:51:28	0
14070	90	73	5,11	cyclictest	25721	-21	apt-get	20:20:19	0
14070	90	72	5,9	cyclictest	6757	-21	ld	20:40:55	0
14070	90	72	5,9	cyclictest	17750	-21	ntpq	20:06:47	0
14070	90	72	5,21	cyclictest	3543	-21	sshd	21:26:36	0
14070	90	72	5,10	cyclictest	28539	-21	ntpq	23:41:20	0
14070	90	72	4,19	cyclictest	25737	-21	chrt	22:00:12	0
14070	90	72	14,9	cyclictest	11849	-21	apt-config	20:50:06	0
14070	90	71	8,10	cyclictest	11108	-21	ntpq	22:26:20	0
14070	90	71	7,11	cyclictest	15508	-21	ntpq	23:21:47	0
14070	90	71	5,20	cyclictest	5109	-21	sleep	23:55:25	0
14070	90	71	5,16	cyclictest	7421	-21	/usr/sbin/munin	19:50:41	0
14070	90	71	4,18	cyclictest	29854	-21	ntpq	20:25:51	0
14070	90	71	4,10	cyclictest	24376	-21	munin-run	21:10:03	0
14070	90	70	6,16	cyclictest	6586	-21	apt-get	22:20:19	0
14070	90	70	6,11	cyclictest	8866	-21	apt-get	21:35:34	0
14070	90	70	5,18	cyclictest	9931	-21	apt-get	19:55:12	0
14070	90	70	4,11	cyclictest	28309	-21	runrttasks	19:31:33	0
14070	90	69	5,18	cyclictest	24110	-21	diskstats	19:25:31	0
14070	90	69	4,10	cyclictest	6496	-21	sshd	19:49:38	0
14070	90	69	14,9	cyclictest	1273	-21	ssh	22:11:34	0
14070	90	69	11,8	cyclictest	0	-21	swapper	20:18:49	0
11726	2	69	8,48	sleep0	11890	-21	irqrtprio	19:05:40	0
1083	2	69	0,2	sleep0	1086	-21	cut	19:40:32	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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