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 Tue Aug 18, 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
9296	2	122	0,3	chrt	9292	-21	fw_packets	23:35:54	0
19090	2	121	0,3	chrt	19091	-21	aten2.4_rfpower	21:25:35	0
25966	2	118	0,2	chrt	25967	-21	sh	19:52:55	0
1431	2	117	0,3	chrt	1432	-21	sh	20:57:16	0
32165	2	116	0,2	chrt	32166	-21	runrttasks	19:10:49	0
7800	2	115	0,2	chrt	7797	-21	sed	20:15:48	0
28311	2	115	0,3	chrt	28310	-21	seq	22:27:04	0
18377	2	114	0,3	chrt	18373	-21	ps	22:12:18	0
3896	2	113	0,2	chrt	3895	-21	ssh	21:51:00	0
2185	2	113	0,3	chrt	2186	-21	chrt	19:15:31	0
6125	2	112	0,2	chrt	6127	-21	basename	00:20:02	0
30164	2	112	0,3	chrt	30163	-21	seq	22:30:32	0
26601	2	111	0,2	sleep0	26603	-21	cut	21:36:09	0
14975	2	111	0,2	sleep0	14976	-21	chrt	21:19:06	0
10042	2	110	0,2	chrt	10040	-21	ssh	22:48:04	0
4998	2	108	0,2	chrt	4999	-21	sleep	23:29:39	0
32074	2	108	0,2	chrt	32076	-21	runrttasks	21:44:52	0
18994	2	108	0,1	sleep0	18996	-21	grep	23:50:36	0
13420	2	107	0,2	sleep0	13421	-21	seq	22:05:33	0
31045	2	104	0,2	chrt	31046	-21	sleep	20:52:59	0
15224	2	99	0,2	sleep0	15226	-21	seq	23:45:05	0
12312	2	99	0,2	sleep0	12314	-21	if_eth1	22:51:46	0
17684	2	96	0,2	sleep0	17685	-21	chrt	23:48:13	0
11220	2	95	0,2	sleep0	11221	-21	chrt	20:21:07	0
7244	2	94	0,2	sleep0	7245	-21	rm	22:44:20	0
1732	2	93	0,2	sleep0	1733	-21	ssh	23:24:46	0
9353	2	87	0,3	chrt	9336	-21	ntpq	19:26:16	0
10974	2	86	0,1	sleep0	10973	-21	seq	21:12:37	0
28036	2	83	0,2	sleep0	28035	-21	seq	19:56:01	0
11530	2	80	0,2	sleep0	11531	-21	chrt	19:30:32	0
25406	2	79	0,2	chrt	25283	-21	apt-get	00:00:31	0
24127	2	77	0,2	sleep0	24128	-21	seq	23:57:47	0
17793	2	76	0,2	sleep0	17791	-21	grep	23:00:05	0
21003	2	71	0,2	sleep0	21004	-21	chrt	19:45:37	0
32534	2	69	0,1	sleep0	32538	-21	tail	21:45:35	0
19160	2	68	0,1	sleep0	19159	-21	seq	20:35:01	0
12586	2	66	0,2	sleep0	12587	-21	seq	00:29:37	0
10445	2	65	0,2	sleep0	10446	-21	chrt	22:00:53	0
9625	2	61	0,1	sleep0	9626	-21	sh	21:59:50	0
31054	90	59	34,16	cyclictest	23342	-21	apt-get	22:20:22	0
31054	90	59	33,16	cyclictest	2652	-21	apt-get	21:00:19	0
26869	2	59	0,1	sleep0	26874	-21	chrt	23:13:15	0
31054	90	58	26,13	cyclictest	28423	-21	apt-get	00:05:42	0
31054	90	58	25,23	cyclictest	32551	-21	ssh	00:10:49	0
20674	2	58	0,2	sleep0	20675	-21	if_can0	22:16:02	0
31054	90	57	24,23	cyclictest	2898	-21	ssh	22:37:40	0
31054	90	56	31,15	cyclictest	19545	-21	apt-get	20:35:50	0
31054	90	56	25,22	cyclictest	17981	-21	rm	23:00:29	0
31054	90	55	33,15	cyclictest	5450	-21	sleep	23:30:28	0
31054	90	55	30,16	cyclictest	28187	-21	df	23:15:35	0
31054	90	55	26,21	cyclictest	15432	-21	ld	19:36:07	0
31054	90	55	25,22	cyclictest	16637	-21	ssh	21:21:11	0
31054	90	55	24,22	cyclictest	31305	-21	ntpq	20:01:13	0
31054	90	55	24,12	cyclictest	14335	-21	ssh	00:31:35	0
31054	90	55	23,23	cyclictest	23442	-21	memory	21:31:17	0
31054	90	55	23,23	cyclictest	21168	-21	/usr/sbin/munin	23:05:38	0
31054	90	55	22,14	cyclictest	18147	-21	runrttasks	00:37:20	0
31054	90	54	31,14	cyclictest	5063	-21	sleep	20:11:22	0
31054	90	53	33,12	cyclictest	13656	-21	/usr/sbin/munin	20:25:40	0
31054	90	53	32,13	cyclictest	9129	-21	ssh	00:24:16	0
31054	90	53	28,16	cyclictest	681	-21	apt-get	20:05:13	0
31054	90	53	23,11	cyclictest	26089	-21	df	20:45:28	0
31054	90	53	22,14	cyclictest	6260	-21	hddtemp_smartct	21:05:39	0
31054	90	52	29,14	cyclictest	18092	-21	irqrtprio	19:40:45	0
31054	90	52	22,10	cyclictest	6343	-21	ntpq	19:21:31	0
31054	90	52	21,12	cyclictest	22984	-21	df	20:40:28	0
29131	2	47	12,20	sleep0	29172	-21	ntpq	19:06:07	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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