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 highest latencies:

System rackfslot4s.osadl.org (updated Sun Dec 28, 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
2047	2	123	0,2	chrt	2048	-21	modprobe	20:25:00	0
4173	2	120	0,2	chrt	4168	-21	ntpq	22:06:38	0
3346	2	119	0,3	chrt	3342	-21	mailstats	21:17:24	0
23447	2	119	0,1	sleep0	23448	-21	seq	23:24:52	0
1040	2	117	0,2	chrt	1038	-21	ntpq	00:27:55	0
1006	2	117	0,2	chrt	1004	-21	ssh	21:14:26	0
27635	2	116	0,3	chrt	27630	-21	ntpq	22:41:55	0
12155	2	116	0,2	chrt	12156	-21	runrttasks	22:19:05	0
27599	2	115	0,2	chrt	27600	-21	sh	21:53:33	0
29059	2	114	0,3	chrt	29057	-21	kernelversion	00:21:09	0
28577	2	114	0,3	chrt	28578	-21	aten2.4_rfpower	20:15:24	0
24352	2	113	0,2	chrt	24353	-21	sh	21:00:36	0
7288	2	112	0,2	sleep0	7289	-21	chrt	21:23:23	0
28323	2	111	0,4	chrt	28324	-21	sleep	21:05:51	0
26923	2	111	0,2	sleep0	26925	-21	if_err_eth1	19:20:42	0
17954	2	111	0,2	chrt	17952	-21	sshd	19:58:32	0
15214	2	111	0,3	chrt	15216	-21	runrttasks	21:35:39	0
9852	2	108	0,3	chrt	9853	-21	runrttasks	23:04:34	0
26091	2	101	0,2	chrt	26092	-21	runrttasks	00:16:42	0
19708	2	100	0,2	chrt	19709	-21	hostname	22:30:35	0
16787	2	95	0,2	sleep0	16788	-21	seq	00:02:33	0
11532	2	95	0,2	sleep0	11533	-21	seq	19:47:54	0
13495	2	94	0,2	sleep0	13492	-21	memory	19:50:55	0
7767	2	93	0,2	sleep0	7768	-21	rm	23:49:52	0
3232	2	89	0,2	sleep0	3231	-21	seq	20:25:53	0
17620	2	86	0,2	sleep0	17622	-21	cut	23:15:54	0
21226	2	84	0,2	sleep0	21225	-21	seq	20:55:33	0
6118	2	83	0,2	sleep0	6119	-21	seq	22:10:15	0
25155	2	83	0,2	sleep0	25158	-21	chrt	20:10:00	0
2121	2	81	0,2	sleep0	2118	-21	smart_sda	22:52:18	0
31700	2	80	0,2	sleep0	31697	-21	seq	22:00:01	0
22969	2	80	0,2	sleep0	22970	-21	ntpq	21:46:37	0
15836	2	79	0,2	chrt	15817	-21	ntpq	20:46:06	0
2648	2	77	0,2	sleep0	2649	-21	aten2.4_rfpower	00:30:36	0
11194	2	76	0,2	sleep0	11196	-21	grep	23:06:25	0
586	2	73	0,2	sleep0	587	-21	ssh	23:38:38	0
3053	2	72	0,2	sleep0	3054	-21	chrt	23:42:09	0
18498	2	72	0,2	sleep0	18496	-21	diskstats	00:05:49	0
21604	2	71	0,1	sleep0	21605	-21	seq	20:04:23	0
5431	2	67	0,1	sleep0	5432	-21	chrt	22:57:17	0
11852	2	62	0,1	sleep0	11916	-21	cpu	21:30:39	0
12016	2	60	0,2	sleep0	12017	-21	runrttasks	23:55:57	0
20068	2	57	3,7	sleep0	20104	-21	mailstats	21:42:21	0
24377	2	56	4,41	sleep0	24380	-21	ntpq	19:16:08	0
28108	2	55	11,7	sleep0	26840	-21	apt-get	23:31:35	0
6719	2	54	3,6	sleep0	6730	-21	ld	20:31:32	0
17935	2	54	0,1	sleep0	17938	-21	cut	22:27:17	0
13208	2	53	3,42	sleep0	13214	-21	df	22:20:44	0
795	2	52	2,5	sleep0	807	-21	modprobe	22:01:34	0
7301	2	52	3,41	sleep0	7296	-21	ntpq	00:37:02	0
25733	2	52	5,6	sleep0	25661	-21	ssh	23:27:27	0
10896	2	52	0,1	sleep0	10897	-21	seq	21:29:00	0
1330	2	49	0,3	chrt	1312	-21	ntpq	19:31:14	0
17254	2	48	10,23	sleep0	17262	-21	df	19:05:27	0
19943	90	47	16,16	cyclictest	30232	-21	diskmemload	23:10:07	0
25867	2	46	0,2	sleep0	25870	-21	apt	22:40:00	0
22921	2	44	2,35	sleep0	22907	-21	ssh	00:11:59	0
19943	90	44	15,22	cyclictest	0	-21	swapper	23:52:26	0
19943	90	42	17,18	cyclictest	29375	-21	/usr/sbin/munin	22:47:12	0
19943	90	42	14,11	cyclictest	11653	-21	telnet	20:40:24	0
19943	90	41	5,28	cyclictest	7321	-21	ntpq	19:40:53	0
19943	90	41	5,17	cyclictest	29854	-21	fschecks_time	19:25:34	0
19943	90	41	5,10	cyclictest	20682	-21	munin-run	20:55:02	0
19943	90	41	4,10	cyclictest	3675	-21	hddtemp_smartct	19:35:37	0
19943	90	41	3,18	cyclictest	9544	-21	ntpq	20:36:00	0
19943	90	40	20,14	cyclictest	0	-21	swapper	20:10:27	0
19943	90	39	12,10	cyclictest	436	-21	runrttasks	19:10:31	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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