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
Special All - All RT - Optimization - Ethernet - Thumbnails - Next

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 Sun Jul 13, 2025 00:44:35)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
32682	2	122	0,3	chrt	32683	-21	/usr/sbin/munin	21:40:59	0
16044	2	122	0,3	chrt	14789	-21	/usr/sbin/munin	21:11:40	0
17750	2	114	0,3	chrt	17749	-21	/usr/sbin/munin	23:10:35	0
25512	2	113	0,3	chrt	25514	-21	fschecks_count	22:25:57	0
20693	2	106	0,2	chrt	20694	-21	awk	19:15:08	0
5964	2	103	0,3	chrt	5965	-21	sh	19:49:22	0
8043	2	83	0,3	sleep0	8045	-21	grep	20:55:47	0
30070	2	78	0,2	sleep0	30073	-21	sed	20:35:44	0
5219	2	76	0,2	sleep0	5220	-21	sendmail_mailst	22:47:10	0
16500	2	75	0,2	sleep0	16499	-21	ntpq	19:05:47	0
17940	90	74	6,48	cyclictest	12181	-21	ntp_states	22:01:52	0
17940	90	73	6,57	cyclictest	12990	-21	apt-get	00:00:04	0
17940	90	73	6,46	cyclictest	2239	-21	users	00:37:22	0
17940	90	73	14,51	cyclictest	28836	-21	runrttasks	00:27:10	0
6570	2	72	0,2	sleep0	6552	-21	ntpq	21:51:44	0
29123	2	72	0,1	sleep0	29124	-21	cat	21:35:09	0
17940	90	72	4,47	cyclictest	19489	-21	apt-get	22:16:11	0
17940	90	72	12,51	cyclictest	16856	-21	ps	00:06:07	0
17940	90	72	12,41	cyclictest	17054	-21	irqrtprio	20:10:46	0
17940	90	71	9,54	cyclictest	20253	-21	apt-get	21:21:06	0
17940	90	71	7,54	cyclictest	15589	-21	ssh	22:08:04	0
17940	90	70	6,55	cyclictest	8428	-21	df_inode	21:55:45	0
17940	90	70	6,54	cyclictest	2131	-21	munin-node	20:45:12	0
17940	90	70	6,45	cyclictest	31897	-21	ntpq	19:35:54	0
17940	90	70	6,43	cyclictest	6302	-21	apt-get	19:50:21	0
17940	90	70	5,56	cyclictest	13618	-21	python3	23:02:14	0
17940	90	70	5,53	cyclictest	24250	-21	apt-get	20:25:17	0
17940	90	70	5,48	cyclictest	13245	-21	apt-get	00:00:35	0
17940	90	70	5,45	cyclictest	12630	-21	fschecks_count	21:05:36	0
17940	90	70	4,55	cyclictest	13893	-21	/usr/sbin/munin	20:05:42	0
17940	90	70	4,47	cyclictest	24806	-21	ntpq	21:27:08	0
17940	90	70	4,46	cyclictest	16207	-21	apt-get	22:10:33	0
17940	90	70	16,45	cyclictest	30426	-21	ssh	23:32:44	0
17940	90	70	16,45	cyclictest	23688	-21	ntp_states	22:22:04	0
17940	90	69	6,54	cyclictest	2842	-21	irqstats	23:41:07	0
17940	90	69	6,54	cyclictest	18069	-21	fschecks_count	21:15:52	0
17940	90	69	5,55	cyclictest	21925	-21	python3	23:17:13	0
17940	90	69	5,54	cyclictest	32758	-21	ntpq	23:36:31	0
17940	90	69	5,54	cyclictest	18713	-21	apt-get	00:10:49	0
17940	90	69	5,44	cyclictest	31207	-21	memory	00:31:14	0
17940	90	69	4,49	cyclictest	6364	-21	sshd	20:52:22	0
17940	90	69	4,47	cyclictest	25975	-21	apt-get	21:30:10	0
17940	90	69	4,45	cyclictest	3693	-21	ntpq	21:46:31	0
17940	90	69	4,45	cyclictest	28184	-21	cat	20:31:27	0
17940	90	69	4,45	cyclictest	26050	-21	aten2.4_rfpower	19:25:25	0
17940	90	69	14,47	cyclictest	14623	-21	diskmemload	22:41:46	0
17940	90	69	14,46	cyclictest	10057	-21	diskstats	21:00:33	0
17940	90	69	12,48	cyclictest	12603	-21	sshd	20:01:23	0
17940	90	68	6,52	cyclictest	4699	-21	apt-get	23:45:24	0
17940	90	68	6,52	cyclictest	15712	-21	irqstats	23:06:09	0
17940	90	68	5,54	cyclictest	7018	-21	hddtemp_smartct	22:50:58	0
17940	90	68	5,43	cyclictest	23681	-21	df_inode	19:20:32	0
17940	90	68	4,56	cyclictest	1705	-21	kworker/u2:0	00:17:19	0
17940	90	68	4,55	cyclictest	8803	-21	seq	23:51:53	0
17940	90	67	6,53	cyclictest	31663	-21	apt-get	20:40:15	0
17940	90	67	6,51	cyclictest	18070	-21	apt-get	19:10:19	0
17940	90	67	6,49	cyclictest	30594	-21	apt-get	22:35:29	0
17940	90	67	6,43	cyclictest	28943	-21	ssh	22:31:23	0
17940	90	67	5,54	cyclictest	20231	-21	latency	20:16:40	0
17940	90	67	4,55	cyclictest	9962	-21	seq	22:56:05	0
17940	90	67	4,54	cyclictest	9978	-21	ntpq	19:56:15	0
17940	90	67	4,54	cyclictest	29315	-21	missed_timers	19:30:49	0
17940	90	67	4,53	cyclictest	23453	-21	df	23:20:39	0
17940	90	66	7,50	cyclictest	22853	-21	ntp_states	20:21:09	0
17940	90	66	4,53	cyclictest	27063	-21	ssh	23:26:31	0
17940	90	66	3,45	cyclictest	844	-21	apt-get	19:40:54	0
17940	90	65	5,52	cyclictest	25812	-21	ntpq	00:21:33	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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