OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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
Special All - All RT - Optimization - Ethernet - Thumbnails - Next

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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack7slot4s.osadl.org (updated Mon Mar 30, 2026 00:45:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
5363	99	64	5,38	cyclictest	14133	-21	ssh	00:05:15	1
5363	99	61	5,49	cyclictest	7733	-21	ssh	21:55:12	1
5363	99	61	3,10	cyclictest	13	1	rcu_preempt	22:45:14	1
5355	99	61	4,49	cyclictest	25651	-21	ssh	22:05:12	0
5371	99	60	2,46	cyclictest	3598	-21	ssh	23:05:12	2
5363	99	58	3,40	cyclictest	5147	-21	ssh	00:00:12	1
5371	99	54	3,45	cyclictest	26136	-21	apt-get	20:05:13	2
5363	99	52	4,39	cyclictest	17691	-21	ssh	00:25:13	1
5363	99	50	3,6	cyclictest	13	1	rcu_preempt	23:45:12	1
5371	99	49	2,42	cyclictest	9027	-21	apt-get	22:50:10	2
5371	99	49	0,44	cyclictest	8089	-21	apt-get	20:20:13	2
5363	99	49	5,37	cyclictest	31142	-21	ssh	21:50:15	1
5383	99	47	3,28	cyclictest	283	66	irq/58-eth0	21:45:13	3
5371	99	47	1,42	cyclictest	0	-21	swapper/2	19:15:12	2
5363	99	47	1,37	cyclictest	30642	-21	ssh	23:20:14	1
5371	99	46	1,39	cyclictest	223	46	irq/40-dwc2_hso	19:40:14	2
5371	99	46	0,43	cyclictest	0	-21	swapper/2	20:40:12	2
5355	99	45	4,32	cyclictest	12524	-21	ssh	23:10:12	0
5371	99	43	2,30	cyclictest	0	-21	swapper/2	22:05:12	2
5371	99	43	0,33	cyclictest	1743	-21	apt-get	23:40:13	2
5371	99	43	0,28	cyclictest	23483	-21	diskmemload	23:18:55	2
5371	99	42	1,36	cyclictest	0	-21	swapper/2	21:15:14	2
5371	99	42	1,33	cyclictest	9038	-21	sh	22:12:55	2
5371	99	42	1,29	cyclictest	28582	-21	ssh	23:55:13	2
5363	99	42	1,38	cyclictest	27501	-21	ssh	21:30:12	1
5383	99	41	3,28	cyclictest	283	66	irq/58-eth0	22:35:14	3
5371	99	41	3,31	cyclictest	5601	-21	apt-get	22:30:15	2
5371	99	41	2,34	cyclictest	0	-21	swapper/2	00:15:14	2
5371	99	41	1,34	cyclictest	0	-21	swapper/2	21:40:13	2
5371	99	41	1,21	cyclictest	7150	-21	sh	23:25:13	2
5371	99	41	0,36	cyclictest	924	-21	snmpd	23:20:12	2
5371	99	41	0,29	cyclictest	23483	-21	diskmemload	22:44:55	2
5371	99	41	0,29	cyclictest	2137	-21	ssh	22:26:17	2
5363	99	41	4,6	cyclictest	13	1	rcu_preempt	21:15:14	1
5371	99	40	3,27	cyclictest	16144	-21	ssh	23:30:11	2
5371	99	40	2,34	cyclictest	0	-21	swapper/2	21:55:13	2
5371	99	40	1,36	cyclictest	0	-21	swapper/2	23:45:13	2
5371	99	40	1,35	cyclictest	0	-21	swapper/2	20:25:11	2
5371	99	40	0,37	cyclictest	20093	-21	apt-get	22:20:13	2
5371	99	40	0,37	cyclictest	20093	-21	apt-get	22:20:12	2
5371	99	40	0,26	cyclictest	23483	-21	diskmemload	00:32:10	2
5383	99	39	2,22	cyclictest	283	66	irq/58-eth0	22:10:13	3
5371	99	39	3,30	cyclictest	0	-21	swapper/2	19:55:10	2
5371	99	39	1,32	cyclictest	4071	-21	apt-get	21:35:11	2
5371	99	39	0,26	cyclictest	20512	-21	ssh	00:07:24	2
5371	99	39	0,25	cyclictest	0	-21	swapper/2	23:13:03	2
5363	99	39	3,29	cyclictest	26724	-21	ssh	00:30:13	1
5355	99	39	1,28	cyclictest	21599	-21	ssh	23:15:13	0
5355	99	39	11,3	cyclictest	13	1	rcu_preempt	23:00:11	0
5383	99	38	2,23	cyclictest	283	66	irq/58-eth0	21:05:13	3
5371	99	38	1,33	cyclictest	0	-21	swapper/2	21:05:12	2
5371	99	38	1,24	cyclictest	0	-21	swapper/2	21:26:48	2
5371	99	38	0,27	cyclictest	20856	-21	ssh	22:37:16	2
5371	99	38	0,25	cyclictest	0	-21	swapper/2	00:01:39	2
5363	99	38	1,30	cyclictest	16695	-21	ssh	22:00:14	1
5383	99	37	2,30	cyclictest	283	66	irq/58-eth0	23:30:13	3
5371	99	37	2,32	cyclictest	223	46	irq/40-dwc2_hso	00:35:14	2
5371	99	37	2,32	cyclictest	223	46	irq/40-dwc2_hso	00:35:13	2
5371	99	37	2,31	cyclictest	11591	-21	apt-get	19:50:13	2
5371	99	37	1,32	cyclictest	0	-21	swapper/2	21:45:13	2
5371	99	37	1,31	cyclictest	30916	-21	apt-get	20:10:12	2
5371	99	37	1,20	cyclictest	14963	-21	ssh	21:21:15	2
5371	99	37	0,34	cyclictest	0	-21	swapper/2	22:45:13	2
5371	99	37	0,32	cyclictest	23047	-21	apt-get	00:10:13	2
5371	99	37	0,32	cyclictest	11162	-21	ssh	22:15:15	2
5371	99	37	0,24	cyclictest	25096	-21	ssh	22:04:48	2
5363	99	37	24,10	cyclictest	14522	-21	ssh	22:35:13	1
5363	99	37	14,12	cyclictest	5346	-21	cyclictest	20:30:14	1
5355	99	37	1,32	cyclictest	18028	-21	rm	22:55:11	0
5371	99	36	1,30	cyclictest	31156	-21	ssh	21:30:25	2
5371	99	36	1,29	cyclictest	6792	-21	apt-get	19:45:12	2
5371	99	36	0,22	cyclictest	23483	-21	diskmemload	23:35:45	2
5371	99	35	1,29	cyclictest	2388	-21	ntp_states	21:50:26	2
5371	99	35	1,29	cyclictest	0	-21	swapper/2	20:15:13	2
5371	99	35	0,23	cyclictest	25767	-21	wc	20:35:22	2
5371	99	35	0,22	cyclictest	24388	-21	sh	22:57:17	2
5383	99	34	4,20	cyclictest	283	66	irq/58-eth0	22:00:14	3
5371	99	34	1,28	cyclictest	0	-21	swapper/2	20:30:14	2
5371	99	34	1,25	cyclictest	26988	-21	ssh	23:53:31	2
5371	99	34	0,32	cyclictest	15532	-21	ssh	00:22:56	2
5371	99	34	0,25	cyclictest	24239	-21	ssh	00:27:32	2
5363	99	34	3,26	cyclictest	20115	-21	ssh	22:20:13	1
5363	99	34	3,26	cyclictest	20115	-21	ssh	22:20:12	1
5363	99	34	3,24	cyclictest	9495	-21	ssh	21:20:11	1
5383	99	33	3,19	cyclictest	283	66	irq/58-eth0	00:05:13	3
5371	99	33	1,28	cyclictest	28406	-21	cat	19:30:25	2
5371	99	33	1,24	cyclictest	27043	-21	apt-get	23:00:09	2
5371	99	33	11,19	cyclictest	23829	-21	ssh	21:10:04	2
5355	99	33	2,21	cyclictest	29109	-21	ssh	22:25:14	0
5355	99	33	21,8	cyclictest	0	-21	swapper/0	19:40:14	0
5383	99	32	1,6	cyclictest	0	-21	swapper/3	23:35:12	3
5371	99	32	1,27	cyclictest	23724	-21	grep	19:25:29	2
5371	99	32	1,27	cyclictest	15374	-21	hwlatdetect	19:20:16	2
5371	99	32	1,23	cyclictest	18640	-21	vmstat	21:00:33	2
5371	99	32	1,23	cyclictest	18640	-21	vmstat	21:00:32	2
5371	99	32	0,28	cyclictest	573	-21	tr	19:35:24	2
5371	99	32	0,25	cyclictest	13847	-21	sshd	20:55:38	2
5363	99	32	20,6	cyclictest	0	-21	swapper/1	00:20:12	1
5355	99	32	15,5	cyclictest	0	-21	swapper/0	20:40:11	0
5383	99	31	3,19	cyclictest	283	66	irq/58-eth0	20:45:12	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17