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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 Wed Sep 16, 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
30449	2	131	0,3	sleep0	30450	-21	seq	21:42:11	0
17111	2	124	0,2	chrt	17114	-21	runrttasks	23:00:04	0
26523	2	122	0,2	chrt	26522	-21	/usr/sbin/munin	21:36:15	0
3560	2	121	0,2	sleep0	3561	-21	sh	00:16:25	0
23059	2	118	0,2	chrt	23060	-21	chrt	23:08:35	0
11826	2	118	0,2	chrt	9819	-21	/usr/sbin/munin	22:02:24	0
25639	2	117	0,2	chrt	25637	-21	/usr/sbin/munin	20:45:24	0
4271	2	116	0,2	chrt	4272	-21	runrttasks	23:29:30	0
4936	2	115	0,2	chrt	4937	-21	/usr/sbin/munin	23:30:33	0
1290	2	114	0,2	sleep0	1291	-21	chrt	20:05:42	0
31312	2	113	0,2	chrt	31311	-21	/usr/sbin/munin	23:21:01	0
28086	2	113	0,1	sleep0	28087	-21	chrt	00:05:08	0
19919	2	113	0,3	chrt	19920	-21	timerandwakeup	23:52:20	0
484	2	112	0,2	chrt	485	-21	chrt	20:56:04	0
29311	2	111	0,1	sleep0	29315	-21	chrt	22:29:29	0
20144	2	111	0,3	chrt	20145	-21	chrt	23:04:33	0
17752	2	110	0,2	chrt	17753	-21	runrttasks	19:40:29	0
17324	2	110	0,2	chrt	17323	-21	seq	23:48:55	0
13542	2	109	0,4	chrt	13541	-21	grep	20:25:36	0
7234	2	108	0,2	sleep0	7235	-21	chrt	20:15:29	0
27739	2	105	0,2	chrt	27741	-21	cut	19:55:46	0
22047	2	105	0,2	chrt	22048	-21	sleep	20:39:29	0
6706	2	103	0,2	sleep0	6709	-21	chrt	20:15:01	0
14679	2	102	0,2	chrt	14680	-21	runrttasks	21:18:53	0
7710	2	92	0,3	sleep0	7711	-21	seq	19:25:01	0
3942	2	91	0,2	sleep0	3943	-21	apt-get	22:40:11	0
7156	2	90	0,1	sleep0	7159	-21	idleruntime	21:56:01	0
13791	2	83	0,2	sleep0	13792	-21	ld	00:31:49	0
11632	2	83	0,2	sleep0	11631	-21	cut	23:40:33	0
26251	2	82	0,1	sleep0	26243	-21	ssh	22:25:01	0
31615	2	81	0,1	sleep0	31618	-21	awk	20:01:29	0
17263	2	81	0,2	sleep0	17265	-21	chrt	21:22:21	0
1707	2	81	0,2	sleep0	1708	-21	sh	21:47:28	0
21471	2	80	0,1	sleep0	21470	-21	uniq	19:46:26	0
10355	2	79	0,2	sleep0	10356	-21	seq	23:38:12	0
3488	2	78	0,1	sleep0	3490	-21	ld	21:00:55	0
18964	2	77	0,1	sleep0	18967	-21	wc	00:40:05	0
13767	2	77	0,2	sleep0	13768	-21	chrt	22:55:05	0
31975	2	76	0,1	sleep0	31976	-21	chrt	22:32:54	0
19298	2	75	0,2	sleep0	19300	-21	cut	21:25:54	0
25891	2	74	0,1	sleep0	25892	-21	chrt	23:12:26	0
15007	2	74	0,2	sleep0	15008	-21	cat	22:07:19	0
30852	90	73	41,21	cyclictest	22859	-21	ssh	21:31:08	0
9411	2	72	0,2	sleep0	9412	-21	awk	19:26:42	0
5668	2	72	0,2	sleep0	5669	-21	chrt	00:20:13	0
30852	90	72	42,11	cyclictest	25045	-21	ntpq	19:51:09	0
30852	90	72	41,13	cyclictest	10574	-21	ntp_states	00:27:00	0
27950	2	72	0,2	sleep0	27952	-21	seq	00:05:01	0
22686	2	72	0,1	sleep0	22688	-21	cut	20:40:26	0
30852	90	71	39,21	cyclictest	19750	-21	/usr/sbin/munin	22:16:02	0
30852	90	70	38,23	cyclictest	17212	-21	memory	20:30:50	0
30852	90	69	39,21	cyclictest	10159	-21	rm	22:49:31	0
30852	90	69	38,13	cyclictest	3979	-21	grep	21:51:26	0
30852	90	69	37,12	cyclictest	6587	-21	ntpq	21:05:54	0
30852	90	68	37,22	cyclictest	28506	-21	ntpq	23:16:34	0
30852	90	68	37,21	cyclictest	10969	-21	cut	20:20:49	0
30852	90	68	35,24	cyclictest	23060	-21	ntpq	23:57:14	0
30852	90	67	45,14	cyclictest	12393	-21	sleep	19:31:08	0
30852	90	67	45,13	cyclictest	2932	-21	ntp_states	19:16:19	0
30852	90	67	43,14	cyclictest	15248	-21	memory	19:35:48	0
30852	90	67	38,21	cyclictest	766	-21	cut	22:35:30	0
30852	90	67	37,20	cyclictest	31353	-21	diskstats	19:10:33	0
30852	90	67	35,23	cyclictest	32703	-21	ntpq	00:11:27	0
30852	90	66	41,14	cyclictest	8807	-21	aten2.4_rfpower	21:10:34	0
30852	90	66	36,21	cyclictest	28742	-21	aten2.4_rfpower	20:50:22	0
30852	90	65	45,12	cyclictest	19573	-21	latency_hist	22:15:04	0
30852	90	62	43,12	cyclictest	30869	-21	latency_hist	19:10:03	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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