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 Jun 30, 2026 00:45:11)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
20478	99	66	4,39	cyclictest	1416	-21	ssh	21:25:15	2
20478	99	61	4,37	cyclictest	18258	-21	ssh	22:10:14	2
20488	99	54	46,5	cyclictest	359	66	irq/58-eth0	22:00:14	3
20478	99	54	1,40	cyclictest	24777	-21	ssh	23:25:13	2
20457	99	54	4,39	cyclictest	1368	-21	ssh	23:30:11	0
20478	99	52	3,19	cyclictest	273	46	irq/40-dwc2_hso	23:55:11	2
20465	99	52	6,10	cyclictest	13	1	rcu_preempt	20:10:13	1
20457	99	52	1,43	cyclictest	32483	-21	ssh	22:00:15	0
20478	99	51	2,35	cyclictest	10467	-21	ssh	23:35:12	2
20465	99	51	1,42	cyclictest	27078	-21	ssh	00:20:15	1
20457	99	50	2,35	cyclictest	2554	-21	ssh	22:55:12	0
20465	99	49	1,12	cyclictest	21	-21	ksoftirqd/1	22:25:14	1
20465	99	47	1,38	cyclictest	12793	-21	ssh	00:30:14	1
20457	99	47	0,36	cyclictest	28588	-21	ssh	23:45:13	0
20488	99	46	7,24	cyclictest	359	66	irq/58-eth0	23:00:13	3
20465	99	46	1,37	cyclictest	23219	-21	ssh	00:00:12	1
20465	99	46	1,32	cyclictest	6597	-21	ssh	23:15:15	1
20465	99	45	2,33	cyclictest	17911	-21	ssh	00:15:09	1
20488	99	43	4,25	cyclictest	359	66	irq/58-eth0	22:50:16	3
20488	99	43	3,26	cyclictest	359	66	irq/58-eth0	21:55:13	3
20488	99	43	2,27	cyclictest	359	66	irq/58-eth0	23:40:12	3
20465	99	43	3,36	cyclictest	6329	-21	diskmemload	23:10:12	1
20488	99	41	2,24	cyclictest	359	66	irq/58-eth0	19:15:14	3
20488	99	41	21,14	cyclictest	359	66	irq/58-eth0	21:10:14	3
20488	99	41	21,14	cyclictest	359	66	irq/58-eth0	21:10:13	3
20488	99	39	4,30	cyclictest	0	-21	swapper/3	22:55:12	3
20488	99	39	4,22	cyclictest	359	66	irq/58-eth0	00:10:15	3
20488	99	39	3,18	cyclictest	359	66	irq/58-eth0	23:30:10	3
20488	99	39	2,25	cyclictest	359	66	irq/58-eth0	00:25:14	3
20488	99	39	21,10	cyclictest	0	-21	swapper/3	23:35:12	3
20457	99	39	16,18	cyclictest	12	-21	ksoftirqd/0	21:15:15	0
20457	99	38	6,20	cyclictest	12	-21	ksoftirqd/0	21:05:13	0
20488	99	37	1,2	cyclictest	0	-21	swapper/3	19:50:11	3
20488	99	37	1,25	cyclictest	359	66	irq/58-eth0	23:20:12	3
20465	99	37	11,18	cyclictest	21	-21	ksoftirqd/1	23:50:12	1
20488	99	36	3,17	cyclictest	359	66	irq/58-eth0	22:20:12	3
20457	99	36	1,32	cyclictest	23189	-21	ssh	00:00:10	0
20488	99	35	3,28	cyclictest	0	-21	swapper/3	21:15:14	3
20488	99	35	1,30	cyclictest	0	-21	swapper/3	00:30:12	3
20488	99	35	1,23	cyclictest	359	66	irq/58-eth0	21:35:14	3
20457	99	35	4,19	cyclictest	12	-21	ksoftirqd/0	21:00:14	0
20488	99	34	2,24	cyclictest	0	-21	swapper/3	00:00:11	3
20488	99	34	1,2	cyclictest	0	-21	swapper/3	23:55:11	3
20478	99	34	1,17	cyclictest	24825	-21	ssh	21:20:13	2
20457	99	34	2,27	cyclictest	11670	-21	ssh	23:00:12	0
20478	99	33	2,14	cyclictest	13	1	rcu_preempt	20:10:12	2
20465	99	33	3,17	cyclictest	25978	-21	ssh	22:50:16	1
20457	99	33	3,22	cyclictest	15699	-21	ssh	23:20:13	0
20488	99	32	4,24	cyclictest	0	-21	swapper/3	23:05:12	3
20488	99	32	3,22	cyclictest	0	-21	swapper/3	20:40:15	3
20457	99	32	2,27	cyclictest	27234	-21	ssh	22:15:13	0
20488	99	31	3,24	cyclictest	0	-21	swapper/3	19:10:14	3
20488	99	31	3,19	cyclictest	0	-21	swapper/3	00:35:14	3
20488	99	31	1,4	cyclictest	0	-21	swapper/3	21:40:12	3
20478	99	31	4,16	cyclictest	273	46	irq/40-dwc2_hso	21:35:12	2
20465	99	31	8,19	cyclictest	14340	-21	ssh	21:50:16	1
20465	99	31	3,19	cyclictest	21	-21	ksoftirqd/1	20:55:15	1
20465	99	31	2,20	cyclictest	19499	-21	ssh	23:40:11	1
20457	99	31	1,5	cyclictest	5186	-21	apt-get	23:50:13	0
20488	99	30	3,23	cyclictest	0	-21	swapper/3	21:20:14	3
20488	99	30	2,2	cyclictest	0	-21	swapper/3	20:35:12	3
20488	99	30	2,2	cyclictest	0	-21	swapper/3	20:35:11	3
20488	99	30	1,3	cyclictest	0	-21	swapper/3	20:45:11	3
20488	99	30	1,17	cyclictest	0	-21	swapper/3	21:45:13	3
20488	99	30	1,17	cyclictest	0	-21	swapper/3	21:45:13	3
20488	99	29	3,18	cyclictest	0	-21	swapper/3	20:25:15	3
20488	99	29	2,2	cyclictest	0	-21	swapper/3	22:40:13	3
20488	99	29	1,2	cyclictest	0	-21	swapper/3	20:05:13	3
20478	99	29	4,19	cyclictest	273	46	irq/40-dwc2_hso	00:20:14	2
20478	99	29	4,17	cyclictest	273	46	irq/40-dwc2_hso	21:05:12	2
20478	99	29	2,14	cyclictest	273	46	irq/40-dwc2_hso	22:35:12	2
20478	99	29	2,14	cyclictest	273	46	irq/40-dwc2_hso	22:35:12	2
20465	99	29	6,16	cyclictest	21	-21	ksoftirqd/1	19:40:12	1
20457	99	29	5,20	cyclictest	15	1	rcuc/0	21:40:13	0
20488	99	28	1,4	cyclictest	0	-21	swapper/3	22:05:14	3
20488	99	28	1,2	cyclictest	0	-21	swapper/3	21:25:13	3
20488	99	28	1,2	cyclictest	0	-21	swapper/3	20:15:10	3
20488	99	28	1,21	cyclictest	0	-21	swapper/3	22:25:13	3
20478	99	28	3,17	cyclictest	22103	-21	ssh	22:30:13	2
20478	99	28	3,15	cyclictest	273	46	irq/40-dwc2_hso	23:45:13	2
20478	99	28	3,15	cyclictest	273	46	irq/40-dwc2_hso	19:55:12	2
20478	99	28	2,19	cyclictest	273	46	irq/40-dwc2_hso	20:30:12	2
20478	99	28	2,19	cyclictest	0	-21	swapper/2	20:15:12	2
20478	99	28	2,16	cyclictest	273	46	irq/40-dwc2_hso	19:15:13	2
20465	99	28	8,9	cyclictest	167	66	systemd-network	21:25:02	1
20465	99	28	1,23	cyclictest	19435	-21	ssh	21:35:12	1
20488	99	27	2,3	cyclictest	0	-21	swapper/3	21:05:12	3
20488	99	27	1,3	cyclictest	0	-21	swapper/3	21:50:14	3
20488	99	27	1,3	cyclictest	0	-21	swapper/3	00:15:12	3
20488	99	27	1,23	cyclictest	0	-21	swapper/3	23:15:14	3
20478	99	27	5,12	cyclictest	273	46	irq/40-dwc2_hso	20:00:14	2
20478	99	27	3,20	cyclictest	27646	-21	ssh	00:36:41	2
20478	99	27	3,13	cyclictest	273	46	irq/40-dwc2_hso	20:40:12	2
20478	99	27	2,20	cyclictest	17264	-21	ssh	00:14:42	2
20478	99	27	2,19	cyclictest	0	-21	swapper/2	19:20:15	2
20478	99	27	16,8	cyclictest	14325	-21	ssh	21:50:14	2
20478	99	27	1,20	cyclictest	32485	-21	rm	22:00:14	2
20465	99	27	3,17	cyclictest	21	-21	ksoftirqd/1	22:15:13	1
20457	99	27	2,19	cyclictest	930	-21	snmpd	22:10:14	0
20488	99	26	2,6	cyclictest	0	-21	swapper/3	20:10:12	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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