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 Sat May 23, 2026 00:44:35)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
28705	2	127	0,2	chrt	28706	-21	runrttasks	23:25:30	0
16693	2	127	0,2	chrt	16694	-21	runrttasks	22:18:54	0
14486	2	125	0,2	chrt	14482	-21	ntpq	19:45:49	0
32054	2	117	0,2	chrt	32045	-21	ps	22:41:47	0
20944	2	117	0,2	chrt	20942	-21	ld	00:01:29	0
8271	2	116	0,4	chrt	8270	-21	/usr/sbin/munin	23:43:05	0
23739	2	116	0,3	chrt	23740	-21	runrttasks	23:17:26	0
13356	2	116	0,2	chrt	13357	-21	sleep	21:26:10	0
10825	2	116	0,2	chrt	10822	-21	awk	22:10:22	0
23863	2	115	0,3	chrt	23862	-21	seq	20:00:54	0
8654	2	111	0,2	chrt	8655	-21	cat	00:31:50	0
10204	2	110	0,2	chrt	10205	-21	seq	19:40:08	0
2170	2	109	0,2	chrt	2171	-21	ssh	23:34:13	0
24189	2	107	0,2	sleep0	24190	-21	basename	22:30:31	0
19811	2	106	0,2	chrt	19812	-21	seq	21:36:25	0
19528	2	106	0,2	sleep0	19529	-21	seq	20:45:49	0
19002	2	106	0,2	chrt	19003	-21	seq	23:59:02	0
9147	2	105	0,2	chrt	9149	-21	sshd	22:07:55	0
31328	2	103	0,2	sleep0	31329	-21	chrt	21:05:10	0
23763	2	100	0,2	chrt	23764	-21	sleep	20:52:52	0
21627	2	100	0,1	sleep0	21630	-21	latency_hist	23:15:04	0
4841	2	88	0,2	sleep0	4842	-21	ssh	22:49:55	0
18940	2	87	0,2	sleep0	18941	-21	seq	22:21:55	0
16616	2	87	0,2	chrt	16600	-21	ntpq	20:41:06	0
27504	2	86	0,2	sleep0	27505	-21	chrt	22:35:27	0
25178	2	86	0,2	sleep0	25179	-21	seq	20:55:52	0
26055	2	82	0,2	sleep0	26057	-21	irqrtprio	23:21:04	0
22525	2	81	0,2	sleep0	22527	-21	tail	21:40:30	0
23329	2	78	0,2	sleep0	23331	-21	ls	00:05:37	0
10138	2	78	0,1	sleep0	10139	-21	chrt	23:45:53	0
31290	2	75	0,2	sleep0	31291	-21	chrt	21:53:04	0
8440	2	74	0,1	sleep0	8439	-21	seq	21:19:26	0
17564	2	72	0,2	sleep0	17566	-21	chrt	23:08:32	0
16711	2	71	0,2	sleep0	16707	-21	aten2.4_rfpower	19:50:23	0
26491	2	70	0,2	sleep0	26492	-21	cat	21:46:04	0
28844	2	67	0,2	sleep0	28845	-21	seq	00:13:42	0
539	2	61	0,2	sleep0	537	-21	entropy	20:16:24	0
6444	2	59	0,1	sleep0	6445	-21	chrt	22:05:04	0
29035	2	58	0,2	sleep0	29034	-21	seq	21:00:48	0
13272	2	58	0,3	chrt	12924	-21	apt-get	23:50:48	0
308	2	56	4,43	sleep0	305	-21	ssh	21:55:49	0
25315	2	56	0,1	sleep0	25359	-21	processes	19:11:24	0
5439	2	55	3,43	sleep0	5469	-21	switchtime	19:31:28	0
2953	2	54	0,1	sleep0	2954	-21	chrt	20:20:04	0
29795	2	53	8,36	sleep0	29799	-21	sleep	19:19:31	0
5216	2	52	2,43	sleep0	5217	-21	apt-get	21:15:01	0
29053	2	52	3,40	sleep0	29001	-21	apt-get	20:10:20	0
23822	90	52	20,24	cyclictest	0	-21	swapper	20:26:29	0
2004	2	51	0,3	chrt	1976	-21	ntpq	00:21:50	0
21955	2	50	12,21	sleep0	21956	-21	ntpq	19:05:52	0
15608	2	50	6,6	sleep0	15548	-21	apt-get	21:30:23	0
1430	2	50	0,2	sleep0	1481	-21	cat	19:25:41	0
27291	2	49	0,3	chrt	27289	-21	/usr/sbin/munin	20:06:24	0
10138	2	49	3,38	sleep0	10161	-21	memory	20:30:47	0
23822	90	48	18,22	cyclictest	0	-21	swapper	22:50:06	0
23822	90	48	17,21	cyclictest	0	-21	swapper	23:37:24	0
10559	2	48	2,6	sleep0	10565	-21	ssh	00:35:30	0
31029	2	46	3,36	sleep0	31038	-21	ntp_offset	00:16:44	0
22539	2	46	0,1	sleep0	22541	-21	grep	22:27:17	0
30707	2	44	0,3	sleep0	30708	-21	seq	19:20:38	0
23822	90	44	19,8	cyclictest	9436	-21	ssh	22:56:10	0
20181	2	44	0,3	chrt	20182	-21	sh	19:55:36	0
23822	90	43	5,10	cyclictest	12810	-21	hddtemp_smartct	20:35:37	0
14222	2	43	0,3	sleep0	14219	-21	ssh	23:03:27	0
9658	2	42	0,2	chrt	9659	-21	cat	21:21:02	0
23822	90	42	4,17	cyclictest	7017	-21	apt-get	19:35:10	0
23822	90	42	12,23	cyclictest	0	-21	swapper	00:29:54	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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