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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 792 highest latencies:

System rackfslot4s.osadl.org (updated Wed Apr 29, 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
15950	2	131	0,2	sleep0	15949	-21	grep	20:45:35	0
3788	2	123	0,3	chrt	3792	-21	ssh	22:55:00	0
8155	2	122	0,2	sleep0	8156	-21	seq	21:23:50	0
27298	2	119	0,2	chrt	27295	-21	ntpq	20:11:13	0
23258	2	118	0,2	chrt	23257	-21	/usr/sbin/munin	19:15:22	0
16539	2	118	0,2	chrt	16540	-21	runrttasks	23:13:44	0
30288	2	115	0,4	chrt	30289	-21	runrttasks	23:34:46	0
28500	2	115	0,2	chrt	28501	-21	runrttasks	21:54:48	0
7429	2	114	0,2	sleep0	7430	-21	runrttasks	23:48:49	0
4044	2	114	0,2	sleep0	4047	-21	cut	22:06:04	0
29025	2	114	0,2	chrt	29023	-21	ld	21:05:52	0
5152	2	112	0,2	chrt	5153	-21	sleep	19:36:35	0
8102	2	111	0,1	sleep0	8103	-21	runrttasks	23:50:08	0
4205	2	111	0,3	chrt	4203	-21	telnet	22:55:33	0
2648	2	111	0,1	sleep0	2684	-21	cat	23:41:18	0
18310	2	111	0,2	chrt	18311	-21	sleep	23:16:08	0
26392	2	110	0,2	sleep0	26393	-21	latency_hist	22:40:05	0
25764	2	110	0,3	chrt	25761	-21	irqstats	21:00:45	0
24613	2	110	0,2	chrt	24614	-21	seq	00:14:48	0
24347	2	110	0,2	chrt	24350	-21	grep	20:06:24	0
31682	2	109	0,2	chrt	31684	-21	ssh	21:59:06	0
31289	2	109	0,2	chrt	31290	-21	runrttasks	22:46:48	0
16704	2	107	0,1	sleep0	16706	-21	processes	00:02:13	0
7673	2	106	0,2	sleep0	7676	-21	cpu	23:00:37	0
21007	2	106	0,1	sleep0	21008	-21	chrt	00:09:06	0
7790	2	102	0,2	chrt	7792	-21	fschecks_time	19:40:36	0
29046	2	101	0,2	chrt	29047	-21	sh	22:43:44	0
7373	2	100	0,2	sleep0	7374	-21	seq	00:36:57	0
608	2	100	0,1	sleep0	609	-21	chrt	19:30:26	0
11714	2	100	0,2	chrt	11715	-21	runrttasks	21:29:25	0
27081	2	97	0,2	sleep0	27086	-21	cron	23:30:00	0
15236	2	96	0,2	sleep0	15237	-21	seq	21:34:55	0
21125	2	95	0,2	sleep0	21126	-21	seq	22:31:30	0
17376	2	86	0,2	sleep0	17377	-21	cat	21:37:18	0
2343	2	85	0,2	sleep0	2344	-21	sh	22:03:33	0
10486	2	85	0,2	sleep0	10487	-21	basename	22:16:00	0
26538	2	84	0,2	sleep0	26539	-21	chrt	00:17:03	0
32209	2	82	0,2	sleep0	32210	-21	fschecks_count	00:26:00	0
10949	2	82	0,2	sleep0	10950	-21	seq	19:45:38	0
19956	90	80	8,20	cyclictest	20097	-21	/usr/sbin/munin	19:10:29	0
19956	90	78	13,10	cyclictest	2657	-21	/usr/sbin/munin	21:16:17	0
4747	2	77	0,2	sleep0	4748	-21	ssh	00:32:58	0
30192	2	77	0,2	sleep0	30194	-21	aten2.4_rfpower	19:26:17	0
1155	2	76	0,2	sleep0	1156	-21	chrt	20:21:01	0
32509	2	75	0,1	sleep0	32510	-21	seq	23:37:20	0
24136	2	74	0,1	sleep0	24137	-21	seq	21:47:20	0
19956	90	74	6,19	cyclictest	31134	-21	grep	20:17:15	0
19956	90	74	4,10	cyclictest	4192	-21	ntpq	20:25:57	0
29321	2	73	0,2	sleep0	29323	-21	latency_hist	19:25:05	0
21764	2	73	0,2	sleep0	21765	-21	seq	21:44:35	0
19956	90	73	6,12	cyclictest	9618	-21	apt	22:15:01	0
19956	90	73	5,20	cyclictest	30919	-21	diskmemload	22:23:35	0
19956	90	73	4,19	cyclictest	31817	-21	hddtemp_smartct	21:11:05	0
19956	90	72	6,17	cyclictest	12324	-21	diskstats	23:56:24	0
19956	90	72	4,20	cyclictest	21761	-21	/usr/sbin/munin	20:55:26	0
19956	90	72	3,19	cyclictest	17771	-21	ssh	22:26:27	0
12359	2	72	0,2	sleep0	12356	-21	ps	23:07:10	0
19956	90	71	6,10	cyclictest	10542	-21	ntpq	20:36:08	0
19956	90	71	4,18	cyclictest	439	-21	sh	20:30:49	0
19956	90	71	14,10	cyclictest	14071	-21	if_can0	19:50:40	0
19956	90	71	11,15	cyclictest	20655	-21	seq	23:20:16	0
19956	90	70	13,9	cyclictest	20714	-21	kernelversion	20:00:48	0
19956	90	69	5,16	cyclictest	17819	-21	ntpq	19:56:06	0
19956	90	69	5,11	cyclictest	12818	-21	diskstats	20:40:35	0
19956	90	69	4,16	cyclictest	18967	-21	df	20:50:27	0
19956	90	69	11,11	cyclictest	31040	-21	ssh	00:24:07	0
16967	2	69	10,46	sleep0	16950	-21	apt-get	19:05:15	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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