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 Tue May 26, 2026 12:44:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
11093	2	236	0,2	sleep0	11090	-21	grep	07:05:28	0
14048	2	132	0,2	sleep0	14049	-21	sh	07:10:25	0
32109	2	128	0,3	chrt	32110	-21	sleep	09:21:36	0
30140	2	121	0,3	chrt	29849	-21	apt-get	07:36:02	0
14930	2	121	0,2	chrt	14933	-21	kernelversion	11:22:00	0
28879	2	120	0,2	chrt	28880	-21	runrttasks	10:54:52	0
26507	2	119	0,1	sleep0	26518	-21	ld	10:01:42	0
15353	2	119	0,3	chrt	15351	-21	sshd	10:34:19	0
31243	2	118	0,3	chrt	31244	-21	sleep	11:46:14	0
23693	2	117	0,2	chrt	23695	-21	cpu	07:25:26	0
26886	2	116	0,2	sleep0	26887	-21	seq	12:28:36	0
17136	2	116	0,2	sleep0	17169	-21	apt	07:15:10	0
7525	2	115	0,2	sleep0	7528	-21	latency_hist	12:00:05	0
12621	2	114	0,2	chrt	12620	-21	irqrtprio	09:41:04	0
27482	2	113	0,3	chrt	27479	-21	/usr/sbin/munin	11:41:00	0
32467	2	112	0,2	chrt	32468	-21	runrttasks	11:00:10	0
16934	2	112	0,2	sleep0	16935	-21	basename	09:47:14	0
19873	2	111	0,2	chrt	19874	-21	sleep	10:41:00	0
6431	2	110	0,3	chrt	6432	-21	sleep	08:40:54	0
10103	2	106	0,3	chrt	10104	-21	sleep	09:37:18	0
10014	2	106	0,2	chrt	10015	-21	if_eth2	10:26:02	0
1707	2	105	0,3	chrt	1708	-21	sh	12:40:04	0
16124	2	102	0,2	chrt	16125	-21	runrttasks	08:05:25	0
17665	2	100	0,2	chrt	17668	-21	irqrtprio	11:26:03	0
5497	2	99	0,1	sleep0	5498	-21	seq	10:19:35	0
12302	2	97	0,2	sleep0	12305	-21	cut	12:06:52	0
9437	2	91	0,2	sleep0	9438	-21	chrt	08:45:49	0
28680	2	90	0,2	sleep0	28678	-21	ntp_kernel_pll_	09:16:30	0
21092	2	90	0,2	sleep0	21093	-21	chrt	12:20:18	0
24415	2	86	0,2	sleep0	24416	-21	seq	09:10:39	0
20457	2	86	0,1	sleep0	20455	-21	aten2.4_rfpower	07:20:25	0
6617	2	82	0,2	sleep0	6618	-21	chrt	11:10:05	0
3655	2	82	0,2	sleep0	3656	-21	chrt	07:45:19	0
30314	2	82	0,2	sleep0	30317	-21	sort	10:56:14	0
20967	2	78	0,2	sleep0	20968	-21	chrt	12:20:06	0
23523	2	76	0,2	sleep0	23526	-21	cut	10:46:19	0
3443	2	75	0,3	sleep0	3440	-21	sendmail_mailst	09:27:20	0
14663	2	75	0,2	sleep0	14664	-21	chrt	08:55:11	0
6906	2	74	0,2	sleep0	6910	-21	wc	09:32:27	0
15012	2	73	0,1	sleep0	15014	-21	grep	12:10:53	0
3378	2	72	0,1	sleep0	3379	-21	chrt	08:36:02	0
10910	2	72	0,2	sleep0	10908	-21	ls	12:05:09	0
22084	2	69	0,2	sleep0	22086	-21	ld	09:06:06	0
10687	2	69	0,2	sleep0	10688	-21	basename	11:15:59	0
20451	2	66	0,1	sleep0	20453	-21	awk	11:30:35	0
19296	2	59	0,2	sleep0	19299	-21	cut	09:01:26	0
30862	2	57	0,1	sleep0	30863	-21	latency_hist	12:35:04	0
20045	2	57	4,8	sleep0	20049	-21	ntpq	09:52:06	0
521	2	56	4,42	sleep0	502	-21	apt-get	07:40:14	0
12954	2	54	3,9	sleep0	12957	-21	runrttasks	08:00:15	0
9553	2	51	0,1	sleep0	9554	-21	seq	11:14:25	0
20211	2	51	4,38	sleep0	20219	-21	ld	08:10:57	0
13732	90	49	20,22	cyclictest	0	-21	swapper	10:12:43	0
9660	2	48	0,3	sleep0	9661	-21	chrt	07:55:02	0
23510	2	48	2,39	sleep0	23496	-21	ssh	11:35:22	0
22193	2	46	0,3	chrt	22194	-21	sh	09:55:48	0
2187	2	46	0,3	sleep0	2178	-21	sshd	11:51:19	0
13732	90	46	6,20	cyclictest	28479	-21	/usr/sbin/munin	08:25:25	0
13732	90	46	16,22	cyclictest	0	-21	swapper	10:05:10	0
27125	2	45	0,1	sleep0	27174	-21	seq	07:30:43	0
23572	2	45	0,3	sleep0	23567	-21	sshd	08:16:19	0
17851	2	43	0,1	sleep0	17855	-21	wc	10:37:24	0
13732	90	43	17,20	cyclictest	0	-21	swapper	08:22:25	0
13732	90	42	5,18	cyclictest	11881	-21	df	08:50:28	0
13732	90	42	4,18	cyclictest	10132	-21	df	07:55:27	0
13732	90	42	15,8	cyclictest	386	-21	ntpq	08:31:14	0
13732	90	40	19,13	cyclictest	0	-21	swapper	10:22:42	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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