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 May 05, 2026 00:45:12)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
11629	99	55	2,10	cyclictest	12	-21	ksoftirqd/0	20:30:11	0
11641	99	53	3,8	cyclictest	13	1	rcu_preempt	19:15:13	1
11641	99	52	2,9	cyclictest	13	1	rcu_preempt	22:20:13	1
11652	99	49	2,24	cyclictest	22433	-21	ssh	22:00:14	2
11652	99	49	18,25	cyclictest	27	-21	ksoftirqd/2	22:55:13	2
11641	99	46	1,32	cyclictest	21709	-21	ssh	23:30:14	1
11641	99	44	2,34	cyclictest	10139	-21	ssh	21:35:12	1
11660	99	43	3,19	cyclictest	359	66	irq/58-eth0	00:35:12	3
11641	99	43	3,20	cyclictest	11665	-21	ssh	22:10:25	1
11629	99	43	3,34	cyclictest	28467	-21	ssh	00:10:13	0
11629	99	43	30,6	cyclictest	0	-21	swapper/0	23:00:14	0
11629	99	43	2,32	cyclictest	167	-21	systemd-network	00:35:12	0
11660	99	42	4,24	cyclictest	359	66	irq/58-eth0	23:00:13	3
11641	99	41	3,31	cyclictest	3804	-21	ssh	23:20:13	1
11641	99	41	3,31	cyclictest	3804	-21	ssh	23:20:13	1
11641	99	40	1,29	cyclictest	12777	-21	rm	23:25:15	1
11660	99	39	3,21	cyclictest	359	66	irq/58-eth0	22:40:10	3
11660	99	39	2,22	cyclictest	359	66	irq/58-eth0	22:45:12	3
11652	99	39	1,31	cyclictest	4544	-21	ssh	21:50:13	2
11629	99	38	1,31	cyclictest	16875	-21	ssh	22:15:11	0
11652	99	37	2,18	cyclictest	5546	-21	kthreadcore	22:25:23	2
11652	99	36	1,26	cyclictest	20353	-21	sh	22:35:11	2
11641	99	36	4,23	cyclictest	5775	-21	ssh	22:45:12	1
11629	99	36	2,26	cyclictest	13680	-21	missed_timers	21:35:23	0
11629	99	36	1,29	cyclictest	11390	-21	ssh	22:30:12	0
11652	99	35	1,16	cyclictest	22854	-21	ssh	00:25:13	2
11652	99	35	1,16	cyclictest	22854	-21	ssh	00:25:13	2
11652	99	34	1,4	cyclictest	13	1	rcu_preempt	23:00:13	2
11660	99	33	8,16	cyclictest	359	66	irq/58-eth0	22:05:12	3
11652	99	32	5,18	cyclictest	273	46	irq/40-dwc2_hso	23:40:13	2
11641	99	32	2,25	cyclictest	25078	-21	ssh	23:50:13	1
11641	99	32	2,19	cyclictest	31827	-21	ssh	00:30:12	1
11629	99	32	25,3	cyclictest	15688	-21	ssh	21:20:13	0
11660	99	31	1,20	cyclictest	359	66	irq/58-eth0	00:05:17	3
11652	99	31	2,24	cyclictest	930	-21	snmpd	19:20:14	2
11652	99	31	2,19	cyclictest	273	46	irq/40-dwc2_hso	22:30:12	2
11641	99	31	5,16	cyclictest	1546	-21	ssh	23:55:12	1
11641	99	31	2,23	cyclictest	16145	-21	ssh	23:45:13	1
11629	99	31	2,22	cyclictest	9305	-21	ssh	23:05:15	0
11660	99	30	6,15	cyclictest	359	66	irq/58-eth0	20:55:12	3
11660	99	30	3,13	cyclictest	359	66	irq/58-eth0	22:50:14	3
11660	99	30	2,16	cyclictest	359	66	irq/58-eth0	23:10:11	3
11660	99	30	2,16	cyclictest	0	-21	swapper/3	21:45:11	3
11652	99	30	4,16	cyclictest	27727	-21	kworker/u8:0	22:50:15	2
11652	99	30	2,23	cyclictest	14706	-21	ssh	22:12:51	2
11652	99	30	2,21	cyclictest	0	-21	swapper/2	20:35:13	2
11652	99	30	0,22	cyclictest	31362	-21	ssh	22:05:14	2
11641	99	30	6,19	cyclictest	21	-21	ksoftirqd/1	22:15:13	1
11641	99	30	11,13	cyclictest	30210	-21	ssh	21:10:11	1
11660	99	29	2,17	cyclictest	359	66	irq/58-eth0	19:35:12	3
11652	99	29	3,18	cyclictest	273	46	irq/40-dwc2_hso	23:30:13	2
11652	99	29	3,11	cyclictest	0	-21	swapper/2	19:40:13	2
11652	99	29	2,19	cyclictest	273	46	irq/40-dwc2_hso	21:15:14	2
11652	99	29	2,17	cyclictest	273	46	irq/40-dwc2_hso	00:20:11	2
11652	99	29	12,12	cyclictest	12776	-21	sh	23:25:15	2
11641	99	29	11,10	cyclictest	14111	-21	kworker/1:0	20:20:12	1
11641	99	29	11,10	cyclictest	14111	-21	kworker/1:0	20:20:12	1
11629	99	29	15,10	cyclictest	15	1	rcuc/0	21:30:13	0
11660	99	28	3,18	cyclictest	0	-21	swapper/3	22:32:54	3
11660	99	28	1,17	cyclictest	359	66	irq/58-eth0	00:15:13	3
11652	99	28	4,17	cyclictest	273	46	irq/40-dwc2_hso	21:05:15	2
11652	99	28	4,14	cyclictest	273	46	irq/40-dwc2_hso	19:25:14	2
11652	99	28	2,21	cyclictest	32688	-21	ssh	22:22:52	2
11652	99	28	2,19	cyclictest	273	46	irq/40-dwc2_hso	21:35:12	2
11652	99	28	2,11	cyclictest	27	-21	ksoftirqd/2	21:33:23	2
11641	99	28	18,6	cyclictest	19083	-21	sh	21:40:14	1
11641	99	28	18,5	cyclictest	0	-21	swapper/1	20:15:14	1
11629	99	28	9,13	cyclictest	14668	-1	kworker/u9:0	21:25:13	0
11629	99	28	1,23	cyclictest	6755	-21	ssh	21:15:14	0
11629	99	28	1,21	cyclictest	7226	-21	ssh	23:40:13	0
11660	99	27	3,13	cyclictest	359	66	irq/58-eth0	21:20:13	3
11652	99	27	3,16	cyclictest	273	46	irq/40-dwc2_hso	00:10:12	2
11652	99	27	2,15	cyclictest	1562	-21	ssh	23:55:13	2
11652	99	27	2,11	cyclictest	0	-21	swapper/2	19:55:13	2
11652	99	27	2,10	cyclictest	0	-21	swapper/2	21:00:14	2
11652	99	27	2,10	cyclictest	0	-21	swapper/2	21:00:14	2
11652	99	27	1,21	cyclictest	3631	-21	ssh	21:49:23	2
11652	99	27	12,12	cyclictest	0	-21	swapper/2	23:15:02	2
11629	99	27	4,6	cyclictest	0	-21	swapper/0	23:35:12	0
11629	99	27	4,17	cyclictest	19595	-21	ssh	00:05:17	0
11629	99	27	4,16	cyclictest	14797	-21	ssh	22:50:14	0
11629	99	27	2,19	cyclictest	30903	-21	ssh	00:29:23	0
11629	99	27	2,19	cyclictest	30903	-21	ssh	00:29:23	0
11629	99	27	2,18	cyclictest	15148	-21	sh	22:13:23	0
11629	99	27	1,20	cyclictest	18182	-21	ssh	23:10:13	0
11629	99	27	11,8	cyclictest	12	-21	ksoftirqd/0	22:01:49	0
11652	99	26	9,14	cyclictest	14113	-21	cron	20:20:01	2
11652	99	26	4,5	cyclictest	0	-21	swapper/2	20:20:12	2
11652	99	26	4,5	cyclictest	0	-21	swapper/2	20:20:12	2
11652	99	26	3,19	cyclictest	273	46	irq/40-dwc2_hso	00:35:11	2
11652	99	26	2,17	cyclictest	29818	-21	diskmemload	21:40:14	2
11652	99	26	11,9	cyclictest	20506	-21	ssh	22:15:23	2
11652	99	26	1,10	cyclictest	30598	-21	ssh	23:35:12	2
11629	99	26	3,19	cyclictest	20355	-21	ssh	22:35:11	0
11660	99	25	4,10	cyclictest	359	66	irq/58-eth0	21:25:13	3
11660	99	25	2,17	cyclictest	0	-21	swapper/3	23:59:22	3
11660	99	25	2,16	cyclictest	359	66	irq/58-eth0	21:30:12	3
11652	99	25	4,15	cyclictest	273	46	irq/40-dwc2_hso	00:00:12	2
11652	99	25	4,13	cyclictest	273	46	irq/40-dwc2_hso	19:10:13	2
11652	99	25	4,10	cyclictest	273	46	irq/40-dwc2_hso	20:55:12	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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