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 the 100 highest latencies:

System rackfslot4s.osadl.org (updated Sun Sep 13, 2026 12:44:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
23972	2	125	0,2	chrt	23973	-21	idleruntime	11:26:41	0
8313	2	122	0,2	sleep0	8316	-21	seq	11:02:30	0
6418	2	117	0,3	chrt	6416	-21	ssh	10:11:13	0
21425	2	117	0,2	chrt	21424	-21	/usr/sbin/munin	09:45:40	0
6346	2	115	0,2	chrt	6344	-21	ld	08:31:10	0
31742	2	115	0,2	sleep0	31743	-21	ssh	10:49:46	0
26571	2	115	0,3	chrt	26572	-21	sleep	10:41:14	0
18733	2	114	0,2	chrt	18736	-21	cut	09:41:05	0
11017	2	112	0,3	chrt	11018	-21	cat	09:30:13	0
10831	2	112	0,2	chrt	10829	-21	seq	09:30:08	0
22244	2	110	0,3	chrt	22246	-21	tr	12:12:18	0
10701	2	105	0,3	chrt	10702	-21	aten2.4_rfpower	11:55:35	0
31964	2	101	0,2	sleep0	31965	-21	seq	12:27:00	0
18876	2	100	0,2	sleep0	18877	-21	chrt	11:19:02	0
6998	2	99	0,2	sleep0	6999	-21	chrt	12:38:29	0
24687	2	97	0,1	sleep0	24689	-21	cut	12:16:08	0
25132	2	95	0,1	sleep0	25134	-21	cut	08:10:27	0
17430	2	95	0,2	sleep0	17434	-21	timerwakeupswit	10:27:22	0
3456	2	93	0,2	sleep0	3458	-21	seq	10:55:50	0
30359	2	91	0,2	sleep0	30356	-21	if_err_eth2	11:36:00	0
27665	2	91	0,2	sleep0	27666	-21	perl	12:20:51	0
1135	2	91	0,2	sleep0	1136	-21	gcc	10:51:54	0
6339	2	86	0,2	sleep0	6340	-21	chrt	07:40:22	0
14496	2	86	0,2	sleep0	14497	-21	rm	09:35:29	0
1024	2	86	0,2	sleep0	1022	-21	memory	07:30:47	0
12517	2	83	0,1	sleep0	12518	-21	chrt	07:50:18	0
31039	2	82	0,2	sleep0	31037	-21	irqstats	09:11:11	0
3996	2	78	0,2	sleep0	3997	-21	seq	12:34:15	0
4803	2	77	0,2	sleep0	4804	-21	seq	10:09:15	0
1940	2	76	0,2	sleep0	1941	-21	seq	11:41:42	0
14463	2	76	0,2	sleep0	14464	-21	seq	08:45:17	0
6737	2	75	0,2	sleep0	6738	-21	ssh	11:49:33	0
11632	2	75	0,2	sleep0	11633	-21	seq	10:19:43	0
19872	2	74	0,1	sleep0	19875	-21	wc	10:31:11	0
23467	2	73	0,2	sleep0	23468	-21	chrt	08:06:32	0
26927	2	70	0,2	sleep0	26928	-21	seq	09:53:44	0
18780	2	69	0,2	sleep0	18781	-21	chrt	08:00:25	0
27052	2	68	0,1	sleep0	27051	-21	sshd	09:05:26	0
19937	90	67	32,24	cyclictest	28531	-21	sleep	09:56:20	0
19937	90	66	35,23	cyclictest	30948	-21	apt-get	08:20:18	0
19937	90	66	35,22	cyclictest	17197	-21	sleep	12:05:29	0
19937	90	66	34,13	cyclictest	10888	-21	python3	07:46:28	0
19937	90	66	33,23	cyclictest	28010	-21	apt-get	08:15:20	0
17572	2	66	0,1	sleep0	17573	-21	seq	08:50:20	0
23578	2	65	0,3	sleep0	23579	-21	sleep	10:36:47	0
19937	90	65	34,22	cyclictest	22597	-21	ssh	11:24:55	0
19937	90	65	33,23	cyclictest	27708	-21	ntpq	11:31:40	0
19937	90	65	33,20	cyclictest	9950	-21	df	11:05:37	0
19937	90	65	32,23	cyclictest	29788	-21	diskmemload	10:20:52	0
13825	2	64	0,1	sleep0	13830	-21	irqrtprio	11:11:08	0
19937	90	63	38,15	cyclictest	4229	-21	apt-get	09:20:25	0
19937	90	63	32,23	cyclictest	16880	-21	modprobe	12:05:00	0
19937	90	63	31,22	cyclictest	8736	-21	seq	11:52:01	0
19937	90	63	31,22	cyclictest	2004	-21	/usr/sbin/munin	08:25:38	0
19937	90	63	29,23	cyclictest	29774	-21	diskstats	07:25:33	0
19937	90	61	32,21	cyclictest	1313	-21	df_inode	09:15:45	0
19937	90	61	31,22	cyclictest	32396	-21	seq	10:01:20	0
19937	90	61	30,21	cyclictest	412	-21	snmpd	08:40:12	0
19937	90	61	30,21	cyclictest	3496	-21	df_inode	07:35:31	0
19937	90	61	29,23	cyclictest	21186	-21	ntpq	07:10:59	0
19937	90	60	37,15	cyclictest	8207	-21	apt-get	08:35:18	0
19937	90	60	27,13	cyclictest	16666	-21	ntpq	07:55:56	0
19937	90	59	36,15	cyclictest	26684	-21	munin-run	09:05:00	0
19937	90	59	35,16	cyclictest	23168	-21	apt-get	07:15:12	0
19937	90	59	28,21	cyclictest	26639	-21	df	07:20:29	0
19937	90	58	39,13	cyclictest	20767	-21	aten2.4_rfpower	08:55:25	0
19937	90	52	30,13	cyclictest	19888	-21	latency_hist	07:10:02	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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