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 Wed Jul 22, 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
4162	2	123	0,2	sleep0	4163	-21	cat	21:31:16	0
32376	2	118	0,3	chrt	32375	-21	ld	23:01:56	0
7378	2	117	0,3	chrt	7375	-21	apt	22:25:13	0
29335	2	116	0,2	sleep0	29336	-21	fschecks_count	21:20:55	0
4754	2	115	0,3	chrt	4749	-21	ntpq	20:41:23	0
27067	2	114	0,2	chrt	27065	-21	hddtemp_smartct	20:25:39	0
23977	2	114	0,2	chrt	23976	-21	sh	20:20:40	0
17972	2	113	0,2	chrt	17973	-21	sleep	21:51:42	0
23223	2	111	0,2	chrt	23224	-21	sleep	23:36:44	0
9023	2	107	0,2	chrt	9024	-21	chrt	00:04:32	0
6296	2	107	0,2	chrt	6295	-21	seq	19:52:22	0
10248	2	100	0,2	chrt	10249	-21	xargs	23:17:24	0
17965	2	94	0,2	sleep0	17966	-21	rm	22:40:46	0
16034	2	89	0,2	sleep0	16035	-21	seq	22:37:43	0
25042	2	84	0,2	sleep0	25043	-21	grep	19:30:46	0
20636	2	84	0,2	sleep0	20637	-21	seq	00:21:19	0
16891	2	84	0,3	sleep0	16896	-21	tr	00:16:03	0
12908	2	84	0,2	sleep0	12909	-21	chrt	00:10:32	0
12379	2	84	0,1	sleep0	12380	-21	chrt	22:32:13	0
4095	2	82	0,2	sleep0	4096	-21	seq	22:20:18	0
27771	2	82	0,1	sleep0	27769	-21	basename	22:55:38	0
23392	2	82	0,2	sleep0	23390	-21	aten2.4_rfpower	22:00:34	0
16122	2	81	0,2	sleep0	16123	-21	chrt	23:26:41	0
21343	2	77	0,2	sleep0	21344	-21	grep	19:25:27	0
1538	2	77	0,2	sleep0	1546	-21	irqrtprio	22:16:05	0
14028	2	77	0,2	sleep0	14029	-21	chrt	23:23:14	0
6756	2	75	0,2	sleep0	6758	-21	mailstats	23:12:14	0
27180	2	75	0,2	sleep0	27181	-21	seq	22:54:50	0
23957	2	73	0,2	sleep0	23960	-21	tr	21:12:28	0
10171	2	73	0,1	sleep0	10169	-21	if_err_eth2	00:06:03	0
24524	2	71	0,2	sleep0	24526	-21	cut	00:27:16	0
5762	2	70	0,2	sleep0	5763	-21	seq	23:59:44	0
8862	2	69	9,45	sleep0	8867	-21	df_inode	19:05:23	0
13642	2	68	0,2	sleep0	13643	-21	df	21:45:41	0
1091	2	67	0,2	sleep0	1093	-21	seq	21:26:41	0
11572	90	66	36,22	cyclictest	12754	-21	ld	19:10:53	0
29742	2	64	0,2	sleep0	29743	-21	latency_hist	22:10:04	0
11572	90	64	39,19	cyclictest	13894	-21	apt-get	20:06:09	0
31465	2	63	0,2	sleep0	31466	-21	gcc	19:40:58	0
31179	2	63	0,1	sleep0	31181	-21	ls	20:31:28	0
11572	90	63	35,20	cyclictest	28267	-21	sshd	21:19:18	0
28853	2	62	0,1	sleep0	28854	-21	basename	23:45:35	0
11572	90	62	36,19	cyclictest	15608	-21	seq	21:00:00	0
11572	90	62	34,21	cyclictest	29691	-21	ssh	00:35:39	0
11572	90	62	33,21	cyclictest	25870	-21	ssh	23:41:05	0
11572	90	61	37,16	cyclictest	8944	-21	ssh	21:38:41	0
11572	90	61	33,21	cyclictest	31825	-21	ssh	22:12:25	0
11572	90	61	33,20	cyclictest	11618	-21	ssh	21:42:24	0
11572	90	60	40,14	cyclictest	32403	-21	fschecks_count	23:50:50	0
11572	90	60	34,19	cyclictest	16809	-21	apt-get	20:11:04	0
11572	90	60	31,21	cyclictest	1023	-21	apt-get	19:45:14	0
9617	2	59	0,2	sleep0	9620	-21	seq	20:50:14	0
11572	90	59	42,11	cyclictest	26520	-21	ssh	00:30:49	0
11572	90	59	39,12	cyclictest	12363	-21	sleep	20:01:55	0
11572	90	59	37,14	cyclictest	27236	-21	/usr/sbin/munin	19:35:28	0
11572	90	59	36,17	cyclictest	19824	-21	ssh	21:55:09	0
11572	90	59	33,12	cyclictest	21254	-21	ssh	23:34:18	0
6904	2	58	0,1	sleep0	6903	-21	grep	20:45:35	0
11572	90	58	40,12	cyclictest	4428	-21	ssh	23:09:12	0
11572	90	57	38,12	cyclictest	7850	-21	grep	19:55:39	0
11572	90	57	37,12	cyclictest	19329	-21	uname	19:21:22	0
11572	90	57	37,12	cyclictest	16088	-21	runrttasks	21:00:27	0
11572	90	57	35,14	cyclictest	20824	-21	apt-get	22:45:30	0
11572	90	56	35,13	cyclictest	404	-21	aten2.4_rfpower	20:35:23	0
11572	90	56	35,13	cyclictest	19611	-21	sleep	21:05:45	0
11572	90	55	41,8	cyclictest	436	-21	runrttasks	19:15:45	0
11572	90	55	35,13	cyclictest	21244	-21	cat	20:15:50	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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