OSADL QA Farm on Real-time of Mainline Linux

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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 Tue Jul 28, 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
32055	2	126	0,3	chrt	32038	-21	df	00:11:00	0
1717	2	118	0,2	chrt	1718	-21	aten2.4_rfpower	23:25:38	0
14979	2	118	0,4	chrt	14975	-21	ps	19:36:30	0
3128	2	116	0,3	chrt	3127	-21	/usr/sbin/munin	00:16:02	0
1299	2	116	0,3	chrt	1300	-21	runrttasks	21:47:40	0
26658	2	115	0,2	sleep0	26659	-21	sh	22:26:02	0
19791	2	115	0,2	chrt	19777	-21	apt-get	19:45:14	0
9925	2	114	0,2	chrt	9927	-21	swap	23:37:20	0
32435	2	114	0,1	sleep0	32436	-21	chrt	23:22:22	0
18445	2	114	0,2	chrt	18446	-21	seq	00:39:13	0
15285	2	113	0,3	chrt	15284	-21	ssh	21:20:39	0
26687	2	112	0,3	chrt	26594	-21	ssh	00:02:24	0
8396	2	111	0,1	sleep0	8398	-21	sh	21:10:36	0
7463	2	109	0,3	chrt	7464	-21	sh	21:57:02	0
32108	2	109	0,3	sleep0	32106	-21	ls	20:05:05	0
27285	2	108	0,2	chrt	27286	-21	ssh	21:38:14	0
24202	2	108	0,2	chrt	24203	-21	sh	19:51:20	0
4692	2	107	0,3	chrt	4691	-21	sshd	21:04:38	0
24338	2	107	0,2	chrt	24339	-21	seq	23:59:45	0
6680	2	104	0,2	sleep0	6681	-21	seq	22:44:56	0
11439	2	104	0,2	chrt	11440	-21	ssh	22:02:51	0
13847	2	103	0,2	sleep0	13848	-21	sh	00:31:48	0
29416	2	102	0,2	chrt	29417	-21	latency	21:41:13	0
17740	2	102	0,3	chrt	17741	-21	sleep	20:33:09	0
24894	2	100	0,2	sleep0	24898	-21	rm	23:11:07	0
22872	2	99	0,2	sleep0	22874	-21	gcc	20:41:02	0
31075	2	95	0,2	sleep0	31077	-21	seq	00:09:56	0
18254	2	93	0,2	sleep0	18255	-21	chrt	23:50:34	0
25432	2	92	0,2	sleep0	25433	-21	hostname	20:46:16	0
24062	2	91	0,2	sleep0	24063	-21	sh	21:33:30	0
32745	2	90	0,2	chrt	32031	-21	apt-get	20:06:05	0
13265	2	90	0,2	sleep0	13263	-21	open_inodes	21:17:19	0
7379	2	87	0,2	sleep0	7380	-21	seq	20:16:08	0
19356	2	87	0,2	sleep0	19357	-21	chrt	23:03:03	0
7117	2	86	0,2	sleep0	7118	-21	chrt	00:21:42	0
31755	2	83	0,2	sleep0	31757	-21	grep	20:55:37	0
22945	2	82	0,2	sleep0	22947	-21	aten2.4_rfpower	22:20:36	0
13976	2	82	0,1	sleep0	13975	-21	seq	23:43:45	0
16980	2	81	0,2	sleep0	16979	-21	dpkg	23:00:08	0
19777	2	80	0,2	chrt	19761	-21	ntpq	20:36:05	0
30105	90	79	5,13	cyclictest	6570	-21	ssh	23:32:19	0
29305	2	77	0,2	sleep0	29306	-21	chrt	23:17:36	0
27990	2	77	8,17	sleep0	28030	-21	memory	19:05:40	0
16687	2	77	0,1	sleep0	16688	-21	seq	19:40:13	0
7947	2	76	0,2	sleep0	7951	-21	sed	22:46:09	0
29427	2	76	0,2	sleep0	29428	-21	seq	22:30:29	0
15392	2	75	0,2	sleep0	15393	-21	cat	23:46:00	0
30105	90	74	5,58	cyclictest	1539	-21	telnet	19:15:56	0
30105	90	74	5,57	cyclictest	10078	-21	apt-get	22:50:43	0
30105	90	73	6,12	cyclictest	640	-21	df_inode	22:35:43	0
30105	90	73	6,10	cyclictest	4607	-21	diskstats	19:20:31	0
30105	90	73	5,10	cyclictest	4153	-21	ntp_states	21:52:07	0
30105	90	73	4,58	cyclictest	28685	-21	/usr/sbin/munin	20:50:40	0
30105	90	73	11,54	cyclictest	19757	-21	ssh	22:15:54	0
30105	90	72	6,57	cyclictest	16301	-21	df	22:10:40	0
10949	2	72	0,1	sleep0	10950	-21	xargs	00:27:21	0
30105	90	71	5,10	cyclictest	30248	-21	apt-get	19:10:15	0
30105	90	71	16,47	cyclictest	8045	-21	irqrtprio	19:25:43	0
30105	90	71	15,47	cyclictest	3075	-21	/usr/sbin/munin	20:10:43	0
30105	90	71	14,49	cyclictest	7315	-21	runrttasks	20:25:50	0
30105	90	70	6,11	cyclictest	6131	-21	ntpq	21:06:00	0
30105	90	70	6,10	cyclictest	25985	-21	apt-get	19:55:18	0
30105	90	70	5,56	cyclictest	14653	-21	kworker/u2:0	23:05:21	0
30105	90	70	5,10	cyclictest	19597	-21	ntpq	21:26:38	0
30105	90	69	5,14	cyclictest	11696	-21	ntp_states	19:31:16	0
30105	90	69	5,13	cyclictest	14210	-21	ntp_states	22:07:07	0
30105	90	69	5,12	cyclictest	10332	-21	ntpq	20:20:52	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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