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
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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.
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 Tue Jul 07, 2026 00:45:14)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
26138	99	60	9,6	cyclictest	13	1	rcu_preempt	21:05:12	0
26138	99	57	23,9	cyclictest	0	-21	swapper/0	22:10:11	0
26155	99	54	3,27	cyclictest	7404	-21	diskmemload	21:45:12	2
26138	99	54	8,36	cyclictest	7810	-21	ssh	21:10:14	0
26147	99	52	3,38	cyclictest	16814	-21	ssh	21:15:13	1
26147	99	49	8,36	cyclictest	24683	-21	ssh	00:20:13	1
26138	99	48	5,36	cyclictest	10285	-21	ssh	00:30:14	0
26138	99	47	2,31	cyclictest	21228	-21	ssh	00:00:10	0
26155	99	46	27,10	cyclictest	27	-21	ksoftirqd/2	23:20:14	2
26147	99	46	1,35	cyclictest	32378	-21	ssh	23:30:13	1
26138	99	46	3,33	cyclictest	7404	-21	diskmemload	00:10:15	0
26163	99	45	7,24	cyclictest	359	66	irq/58-eth0	20:15:13	3
26147	99	45	4,30	cyclictest	15651	-21	ssh	00:15:15	1
26147	99	45	1,36	cyclictest	29500	-21	ssh	21:40:14	1
26147	99	43	38,3	cyclictest	17825	-21	sh	23:40:12	1
26163	99	42	3,25	cyclictest	359	66	irq/58-eth0	21:35:16	3
26155	99	42	2,20	cyclictest	29041	-21	ssh	23:10:13	2
26163	99	41	4,23	cyclictest	359	66	irq/58-eth0	00:20:12	3
26163	99	39	18,13	cyclictest	0	-21	swapper/3	22:15:14	3
26163	99	39	18,13	cyclictest	0	-21	swapper/3	22:15:14	3
26138	99	39	1,2	cyclictest	0	-21	swapper/0	23:25:15	0
26163	99	38	3,24	cyclictest	359	66	irq/58-eth0	20:30:12	3
26163	99	38	2,20	cyclictest	359	66	irq/58-eth0	00:15:12	3
26163	99	37	4,20	cyclictest	359	66	irq/58-eth0	19:45:11	3
26163	99	37	1,25	cyclictest	359	66	irq/58-eth0	21:40:13	3
26155	99	37	2,20	cyclictest	530	-21	ssh	22:00:14	2
26138	99	37	0,25	cyclictest	2438	-21	ssh	21:25:12	0
26155	99	36	7,22	cyclictest	30995	-21	ssh	22:35:12	2
26163	99	35	2,17	cyclictest	359	66	irq/58-eth0	21:10:14	3
26163	99	34	2,18	cyclictest	359	66	irq/58-eth0	23:25:14	3
26163	99	34	11,9	cyclictest	359	66	irq/58-eth0	21:15:13	3
26147	99	34	2,22	cyclictest	0	-21	swapper/1	22:45:14	1
26138	99	33	19,9	cyclictest	12	-21	ksoftirqd/0	21:45:12	0
26138	99	33	1,29	cyclictest	24021	-21	ssh	21:55:15	0
26163	99	32	2,19	cyclictest	359	66	irq/58-eth0	23:55:13	3
26163	99	32	2,19	cyclictest	359	66	irq/58-eth0	23:55:13	3
26155	99	32	5,16	cyclictest	273	46	irq/40-dwc2_hso	22:50:14	2
26155	99	32	1,21	cyclictest	9533	-21	ssh	22:05:12	2
26155	99	32	1,21	cyclictest	9533	-21	ssh	22:05:12	2
26163	99	31	1,19	cyclictest	359	66	irq/58-eth0	23:35:12	3
26147	99	31	12,9	cyclictest	21	-21	ksoftirqd/1	21:55:14	1
26138	99	31	1,24	cyclictest	13158	-21	ssh	22:25:15	0
26163	99	30	3,13	cyclictest	359	66	irq/58-eth0	22:10:10	3
26147	99	30	19,5	cyclictest	7799	-21	apt-get	21:10:14	1
26138	99	30	3,20	cyclictest	25513	-21	ssh	22:50:13	0
26155	99	29	4,14	cyclictest	273	46	irq/40-dwc2_hso	19:40:13	2
26155	99	29	1,16	cyclictest	23476	-21	ssh	23:25:17	2
26147	99	29	22,4	cyclictest	11247	-21	apt-get	20:40:12	1
26147	99	29	22,3	cyclictest	18226	-21	apt-get	19:40:12	1
26147	99	29	2,21	cyclictest	26787	-21	ssh	23:45:13	1
26147	99	29	14,11	cyclictest	23449	-21	apt-get	23:25:16	1
26138	99	29	1,24	cyclictest	11497	-21	ssh	21:30:15	0
26138	99	29	1,19	cyclictest	4111	-21	ssh	22:20:13	0
26163	99	28	22,4	cyclictest	0	-21	swapper/3	22:05:11	3
26163	99	28	22,4	cyclictest	0	-21	swapper/3	22:05:11	3
26163	99	28	15,5	cyclictest	359	66	irq/58-eth0	22:20:11	3
26163	99	28	1,15	cyclictest	359	66	irq/58-eth0	23:10:13	3
26155	99	28	2,17	cyclictest	32387	-21	ssh	23:30:14	2
26147	99	28	2,20	cyclictest	844	-21	munin-node	19:20:16	1
26147	99	28	1,18	cyclictest	2420	-21	sh	21:25:11	1
26138	99	28	2,2	cyclictest	13	1	rcu_preempt	19:35:12	0
26138	99	28	2,20	cyclictest	31004	-21	ssh	22:35:13	0
26163	99	27	4,16	cyclictest	359	66	irq/58-eth0	23:00:14	3
26163	99	27	14,8	cyclictest	359	66	irq/58-eth0	22:50:13	3
26163	99	27	11,9	cyclictest	359	66	irq/58-eth0	00:30:15	3
26163	99	27	1,15	cyclictest	359	66	irq/58-eth0	22:55:17	3
26163	99	27	0,13	cyclictest	359	66	irq/58-eth0	20:50:13	3
26155	99	27	5,12	cyclictest	273	46	irq/40-dwc2_hso	21:10:14	2
26147	99	27	20,4	cyclictest	536	-21	usb-storage	22:20:11	1
26138	99	27	10,10	cyclictest	17845	-21	ssh	23:40:13	0
26163	99	26	4,13	cyclictest	359	66	irq/58-eth0	20:25:14	3
26163	99	26	3,15	cyclictest	359	66	irq/58-eth0	00:10:12	3
26163	99	26	2,15	cyclictest	359	66	irq/58-eth0	23:50:13	3
26163	99	26	2,15	cyclictest	359	66	irq/58-eth0	23:50:13	3
26155	99	26	1,8	cyclictest	19361	66	ssh	00:15:28	2
26147	99	26	8,12	cyclictest	11079	-21	apt-get	23:00:13	1
26147	99	26	19,3	cyclictest	503	-21	apt-get	22:00:13	1
26147	99	26	16,6	cyclictest	7404	-21	diskmemload	23:15:27	1
26138	99	26	0,20	cyclictest	11095	-21	sh	23:00:13	0
26163	99	25	2,15	cyclictest	359	66	irq/58-eth0	00:05:14	3
26155	99	25	3,14	cyclictest	273	46	irq/40-dwc2_hso	20:40:12	2
26155	99	25	3,12	cyclictest	273	46	irq/40-dwc2_hso	20:15:11	2
26155	99	25	1,17	cyclictest	23514	-21	latency	23:05:22	2
26155	99	25	1,10	cyclictest	12249	-21	kthreadcore	21:30:22	2
26147	99	25	6,15	cyclictest	0	-21	swapper/1	00:05:13	1
26147	99	25	4,6	cyclictest	21	-21	ksoftirqd/1	22:35:01	1
26147	99	25	2,18	cyclictest	844	-21	munin-node	20:25:14	1
26147	99	25	1,13	cyclictest	9519	-21	ssh	22:05:11	1
26147	99	25	1,13	cyclictest	9519	-21	ssh	22:05:11	1
26138	99	25	9,6	cyclictest	13	1	rcu_preempt	22:00:12	0
26138	99	25	3,14	cyclictest	0	-21	swapper/0	20:45:15	0
26138	99	25	2,19	cyclictest	30224	-21	ssh	00:05:15	0
26138	99	25	2,18	cyclictest	22097	-21	ssh	22:30:15	0
26155	99	24	7,14	cyclictest	11097	-21	sh	23:00:13	2
26155	99	24	7,13	cyclictest	10680	-21	apt-config	23:00:01	2
26155	99	24	3,3	cyclictest	0	-21	swapper/2	21:05:13	2
26155	99	24	1,15	cyclictest	12290	-21	sh	23:55:16	2
26155	99	24	1,15	cyclictest	12290	-21	sh	23:55:15	2
26147	99	24	17,4	cyclictest	1241	-21	apt-get	00:25:15	1
26147	99	24	15,5	cyclictest	2820	-21	apt-get	21:05:14	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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