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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 Mon Aug 31, 2026 12:44:35)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
24288	2	123	0,3	chrt	23004	-21	apt-get	11:16:37	0
14909	2	122	0,2	chrt	14908	-21	ld	11:02:07	0
14735	2	120	0,2	chrt	14731	-21	aten2.4-expect	09:25:34	0
13593	2	120	0,2	chrt	13592	-21	uname	12:37:12	0
15960	2	119	0,2	sleep0	15963	-21	aten2.4_rfpower	10:15:34	0
2562	2	117	0,2	sleep0	2563	-21	chrt	10:43:43	0
11341	2	117	0,3	chrt	11148	-21	/usr/sbin/munin	09:20:31	0
8388	2	115	0,3	chrt	8387	-21	ssh	11:41:19	0
23705	2	114	0,2	sleep0	23704	-21	ld	10:26:17	0
27581	2	113	0,2	chrt	27580	-21	seq	08:55:14	0
31547	2	112	0,2	sleep0	31548	-21	irqrtprio	09:00:45	0
27168	2	112	0,2	chrt	27169	-21	chrt	12:09:08	0
21200	2	112	0,3	chrt	21201	-21	seq	09:35:15	0
20958	2	111	0,2	chrt	20959	-21	chrt	12:00:04	0
11887	2	111	0,2	chrt	11888	-21	chrt	10:09:21	0
10003	2	110	0,2	sleep0	10004	-21	sh	09:17:47	0
4486	2	109	0,2	chrt	4487	-21	seq	09:10:16	0
4057	2	109	0,2	chrt	4055	-21	ntp_offset	09:57:34	0
32661	2	109	0,3	chrt	32662	-21	sleep	07:19:36	0
31621	2	109	0,1	sleep0	31622	-21	chrt	09:50:40	0
18139	2	109	0,1	sleep0	18137	-21	ld	11:06:56	0
10987	2	107	0,2	chrt	10980	-21	irqstats	07:35:47	0
25914	2	105	0,3	chrt	25915	-21	seq	08:00:21	0
16942	2	103	0,2	chrt	16943	-21	sleep	08:36:56	0
7793	2	102	0,2	chrt	7794	-21	sleep	12:28:42	0
3685	2	99	0,2	sleep0	3688	-21	grep	12:22:11	0
20334	2	88	0,1	sleep0	20335	-21	chrt	10:21:49	0
23719	2	87	0,1	sleep0	23721	-21	missed_timers	07:55:50	0
9997	2	82	0,2	sleep0	9998	-21	ls	07:35:03	0
26682	2	78	0,2	sleep0	26685	-21	chrt	07:10:07	0
1446	2	78	0,2	sleep0	1447	-21	hostname	09:05:23	0
31786	2	76	0,2	sleep0	31787	-21	seq	10:38:57	0
1777	2	75	0,1	sleep0	1781	-21	sh	11:31:04	0
29641	2	74	0,2	sleep0	29639	-21	interrupts	08:05:42	0
10584	2	74	0,2	sleep0	10585	-21	seq	12:32:29	0
27407	2	71	0,1	sleep0	27408	-21	seq	09:44:23	0
17872	2	71	0,2	sleep0	17873	-21	seq	09:30:16	0
9634	2	70	0,2	sleep0	9635	-21	chrt	10:54:47	0
10987	2	68	0,2	sleep0	10988	-21	uname	10:56:10	0
21092	2	66	0,2	sleep0	21093	-21	chrt	12:00:10	0
20215	2	65	0,2	sleep0	20217	-21	cpu	11:10:34	0
23477	2	64	9,41	sleep0	23443	-21	apt-get	07:05:18	0
29736	2	63	0,2	sleep0	29739	-21	sed	12:12:23	0
4324	2	58	0,1	sleep0	4327	-21	cut	10:46:06	0
12755	2	58	3,8	sleep0	12761	-21	df	10:10:38	0
17157	2	57	3,9	sleep0	4268	-21	diskmemload	11:54:24	0
592	2	53	3,8	sleep0	577	-21	apt-get	07:20:15	0
32060	2	51	0,2	sleep0	32061	-21	chrt	08:10:12	0
29357	2	51	2,7	sleep0	29364	-21	ntpq	09:46:49	0
3685	2	50	4,7	sleep0	3679	-21	apt-get	07:25:15	0
5125	2	49	0,2	sleep0	5128	-21	cut	11:36:05	0
31087	2	49	0,3	chrt	31064	-21	ssh	12:15:19	0
11490	2	48	0,1	sleep0	11491	-21	grep	11:45:49	0
30440	2	46	0,1	sleep0	30441	-21	chrt	11:25:42	0
28057	2	46	0,2	chrt	28045	-21	ssh	10:32:56	0
26452	90	44	19,18	cyclictest	0	-21	swapper	07:40:40	0
26452	90	43	4,19	cyclictest	21897	-21	hddtemp_smartct	08:45:40	0
26452	90	43	16,18	cyclictest	6720	-21	ssh	10:01:13	0
26452	90	43	15,10	cyclictest	4212	-21	runrttasks	08:16:27	0
26452	90	43	14,11	cyclictest	18258	-21	/usr/sbin/munin	08:40:50	0
6973	2	42	2,32	sleep0	6987	-21	ntpq	08:21:02	0
29434	2	42	0,3	sleep0	29435	-21	sleep	11:24:06	0
26452	90	41	6,18	cyclictest	14954	-21	modprobe	08:35:00	0
26452	90	41	4,10	cyclictest	17456	-21	ntp_kernel_pll_	07:46:02	0
26452	90	41	3,10	cyclictest	19645	-21	apt-get	07:50:20	0
26452	90	40	19,14	cyclictest	0	-21	swapper	08:25:25	0
26452	90	38	4,15	cyclictest	25741	-21	ntpq	08:51:16	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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