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 Thu Sep 04, 2025 00:44:33)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
4997	2	115	0,2	chrt	4998	-21	switchtime	20:51:24	0
20435	2	114	0,2	chrt	20436	-21	sleep	00:15:36	0
14119	2	114	0,2	chrt	14118	-21	ld	20:05:59	0
17378	2	113	0,3	chrt	17379	-21	latency_hist	19:10:03	0
4681	2	112	0,2	chrt	4682	-21	sleep	19:47:22	0
14877	2	110	0,2	chrt	13596	-21	diskmemload	22:09:52	0
3912	2	109	0,2	chrt	3913	-21	sh	21:50:14	0
19128	2	109	0,3	chrt	19129	-21	sleep	22:16:37	0
29569	2	103	0,2	chrt	29571	-21	tr	20:36:22	0
24518	2	103	0,2	chrt	24519	-21	sleep	19:23:21	0
27584	2	102	0,2	chrt	27585	-21	sh	19:30:07	0
10566	2	100	0,3	chrt	10567	-21	sh	22:59:54	0
3707	2	92	0,2	sleep0	3708	-21	aten2.4-expect	23:45:34	0
29600	2	86	0,3	chrt	29579	-21	ntpq	00:31:24	0
28328	2	85	0,2	sleep0	28330	-21	sort	00:30:03	0
19521	2	84	0,1	sleep0	19522	-21	ls	21:20:08	0
5143	2	79	0,2	sleep0	5144	-21	gpgv	22:50:10	0
28225	2	79	0,2	sleep0	28226	-21	if_can0	23:30:59	0
23960	2	77	0,1	sleep0	23961	-21	basename	22:25:51	0
24070	2	72	0,3	sleep0	24071	-21	sh	23:23:04	0
15070	2	71	0,2	sleep0	15071	-21	sh	22:10:06	0
8701	2	70	0,2	sleep0	8699	-21	apt	21:00:11	0
7547	2	70	0,1	sleep0	7550	-21	sed	20:56:26	0
25030	2	68	0,1	sleep0	25034	-21	aten2.4_rfpower	23:25:33	0
1058	2	68	0,2	sleep0	1059	-21	kernelversion	19:40:46	0
13144	2	63	4,47	sleep0	13125	-21	ssh	00:01:51	0
4941	2	61	3,8	sleep0	4920	-21	apt-get	22:50:03	0
19855	2	61	0,2	sleep0	19856	-21	ssh	23:16:18	0
10845	2	58	3,7	sleep0	10855	-21	diskmemload	22:01:51	0
3343	2	57	3,9	sleep0	3326	-21	munin-run	23:45:03	0
13642	2	56	3,8	sleep0	13659	-21	apt-config	21:10:07	0
23859	2	54	3,43	sleep0	23882	-21	processes	21:27:15	0
10817	2	54	2,43	sleep0	10813	-21	apt-get	23:00:14	0
30464	2	52	3,8	sleep0	30467	-21	diskstats	19:35:36	0
29248	2	52	3,6	sleep0	29245	-21	ssh	22:35:18	0
24842	2	52	3,41	sleep0	24839	-21	ssh	00:22:56	0
27945	2	51	3,38	sleep0	27953	-21	ssh	21:35:14	0
19101	2	50	3,8	sleep0	19109	-21	ntpq	20:15:52	0
31834	2	49	2,5	sleep0	31830	-21	ssh	23:37:09	0
17361	90	49	18,23	cyclictest	0	-21	swapper	23:08:44	0
17361	90	49	18,23	cyclictest	0	-21	swapper	22:43:05	0
14536	2	49	3,38	sleep0	886	-21	sh	21:11:28	0
9698	2	48	1,4	sleep0	0	-21	swapper	23:56:02	0
7710	2	48	0,2	chrt	7708	-21	/usr/sbin/munin	21:56:12	0
17361	90	48	20,21	cyclictest	0	-21	swapper	21:30:58	0
20046	2	47	3,34	sleep0	20072	-21	aten2.4-expect	19:15:22	0
17728	2	47	0,2	chrt	17729	-21	sh	00:10:46	0
17361	90	47	19,21	cyclictest	0	-21	swapper	00:09:13	0
11798	2	47	0,3	chrt	11796	-21	/usr/sbin/munin	20:01:23	0
3401	2	46	0,2	chrt	3393	-21	ssh	21:49:01	0
17361	90	44	15,22	cyclictest	0	-21	swapper	22:24:35	0
30968	2	43	0,1	sleep0	31028	-21	cat	20:40:11	0
17361	90	43	17,18	cyclictest	31614	-21	ssh	00:35:45	0
17361	90	43	16,18	cyclictest	0	-21	swapper	23:12:48	0
17361	90	43	12,23	cyclictest	0	-21	swapper	21:44:54	0
7960	2	42	0,2	sleep0	7963	-21	timerwakeupswit	23:52:19	0
17361	90	42	8,10	cyclictest	5491	-21	apt-get	19:50:21	0
17361	90	42	5,9	cyclictest	2288	-21	ntpq	20:46:16	0
17361	90	42	5,18	cyclictest	20580	-21	memory	21:21:12	0
17361	90	42	18,15	cyclictest	0	-21	swapper	22:30:09	0
17361	90	42	16,20	cyclictest	0	-21	swapper	20:12:39	0
27392	2	41	0,3	chrt	27393	-21	sh	19:29:50	0
17361	90	41	4,17	cyclictest	26878	-21	ntp_states	20:31:11	0
17361	90	39	6,26	cyclictest	20998	-21	df	20:20:29	0
17361	90	39	11,10	cyclictest	25357	-21	sh	20:29:07	0
17361	90	38	5,24	cyclictest	8480	-21	hddtemp_smartct	19:55:36	0
17361	90	38	14,18	cyclictest	18471	-21	sed	19:10:54	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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