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 Mon Oct 20, 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
23338	2	121	0,2	chrt	23336	-21	cpu	20:41:19	0
6047	2	120	0,2	chrt	6045	-21	ld	20:06:09	0
10723	2	118	0,2	chrt	9652	-21	apt-get	22:16:29	0
19629	2	117	0,2	chrt	19627	-21	ssh	00:28:55	0
3037	2	116	0,2	sleep0	3070	-21	sendmail_mailst	22:02:12	0
30279	2	114	0,2	chrt	30280	-21	sleep	19:51:20	0
31650	2	113	0,3	chrt	31649	-21	awk	20:56:22	0
29437	2	110	0,2	chrt	29434	-21	cat	19:50:04	0
16783	2	109	0,2	chrt	16784	-21	sleep	20:27:30	0
10427	2	107	0,1	sleep0	10425	-21	uptime	21:17:26	0
3120	2	103	0,2	sleep0	3167	-21	tr	00:00:01	0
15595	2	89	0,2	sleep0	15596	-21	ld	21:26:50	0
22210	2	85	0,2	sleep0	22211	-21	ssh	00:33:20	0
27126	2	82	0,2	sleep0	27128	-21	cat	21:47:20	0
20069	2	82	0,2	sleep0	20073	-21	sed	23:31:06	0
9854	2	81	0,1	sleep0	9857	-21	latency_hist	20:15:02	0
5528	2	80	0,1	sleep0	5529	-21	sh	00:03:45	0
30911	2	80	0,2	sleep0	30912	-21	cat	23:51:03	0
8740	90	75	4,62	cyclictest	22350	-21	ssh	22:36:40	0
13129	2	75	0,2	sleep0	13131	-21	cpuspeed	22:20:37	0
8740	90	74	6,57	cyclictest	23157	-21	ssh	23:36:40	0
8740	90	73	6,56	cyclictest	27000	-21	ssh	22:45:42	0
8740	90	73	6,55	cyclictest	2387	-21	apt-get	20:00:17	0
8740	90	73	5,59	cyclictest	24786	-21	ssh	21:43:28	0
8740	90	73	4,59	cyclictest	15182	-21	hddtemp_smartct	00:20:57	0
8740	90	73	4,58	cyclictest	5644	-21	diskmemload	23:12:18	0
8740	90	72	7,54	cyclictest	5824	-21	apt-get	21:10:29	0
8740	90	72	7,43	cyclictest	20089	-21	apt-get	20:35:16	0
8740	90	72	6,56	cyclictest	21215	-21	ntpq	21:36:57	0
8740	90	72	6,56	cyclictest	12169	-21	ntpq	23:16:53	0
8740	90	72	6,54	cyclictest	14170	-21	apt-get	19:20:18	0
8740	90	72	5,57	cyclictest	28087	-21	apt-get	21:50:59	0
8740	90	72	5,57	cyclictest	17027	-21	ssh	23:26:01	0
8740	90	71	7,55	cyclictest	24898	-21	memory	22:41:11	0
8740	90	71	6,56	cyclictest	30708	-21	ntpq	22:51:45	0
8740	90	71	6,55	cyclictest	23302	-21	ssh	00:35:46	0
8740	90	71	6,55	cyclictest	16576	-21	memory	22:26:13	0
8740	90	70	6,54	cyclictest	19436	-21	apt-get	19:30:59	0
8740	90	70	6,53	cyclictest	21958	-21	apt-get	19:35:16	0
8740	90	70	5,55	cyclictest	367	-21	sendmail-mta	00:12:16	0
8740	90	70	5,55	cyclictest	26541	-21	ssh	23:42:34	0
8740	90	70	5,47	cyclictest	19570	-21	seq	22:31:39	0
8740	90	70	5,47	cyclictest	19322	-21	ssh	21:33:56	0
8740	90	70	5,44	cyclictest	32563	-21	diskstats	22:55:45	0
8740	90	70	4,48	cyclictest	11552	-21	awk	19:15:10	0
8740	90	70	4,47	cyclictest	17808	-21	ntp_states	19:26:10	0
8740	90	70	3,49	cyclictest	12638	-21	seq	21:21:29	0
8740	90	69	7,53	cyclictest	2894	-21	munin-run	21:05:03	0
8740	90	69	7,52	cyclictest	8870	-21	apt-get	19:10:17	0
8740	90	69	6,55	cyclictest	28367	-21	seq	20:50:36	0
8740	90	69	6,54	cyclictest	27807	-21	ls	23:45:36	0
8740	90	69	5,55	cyclictest	7310	-21	aten2.4-expect	22:10:36	0
8740	90	69	5,55	cyclictest	11823	-21	mktemp	00:15:15	0
8740	90	69	5,45	cyclictest	3277	-21	apt-get	21:05:47	0
8740	90	69	4,56	cyclictest	886	-21	sh	23:20:55	0
8740	90	69	4,56	cyclictest	24507	-21	/usr/sbin/munin	19:40:25	0
8740	90	69	4,54	cyclictest	3677	-21	ssh	23:01:29	0
8740	90	69	4,44	cyclictest	32576	-21	ntp_states	21:57:00	0
8740	90	68	6,53	cyclictest	13683	-21	ntp_states	20:21:13	0
8740	90	68	6,52	cyclictest	5276	-21	apt-get	23:05:15	0
8740	90	68	5,53	cyclictest	32760	-21	hddtemp_smartct	19:55:36	0
8740	90	68	5,53	cyclictest	11162	-21	ntpq	20:16:20	0
8740	90	68	4,54	cyclictest	26451	-21	ntpq	20:46:04	0
8740	90	67	15,42	cyclictest	5644	-21	diskmemload	00:05:13	0
8740	90	66	6,51	cyclictest	17714	-21	aten2.4_rfpower	20:30:24	0
8740	90	66	4,54	cyclictest	4380	-21	aten2.4_rfpower	22:05:33	0
8740	90	64	4,41	cyclictest	8741	-21	date	19:10:03	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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