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 Sat Aug 15, 2026 00:45:13)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
25423	99	102	38,19	cyclictest	13	1	rcu_preempt	20:45:12	2
25423	99	102	38,19	cyclictest	13	1	rcu_preempt	20:45:12	2
25423	99	81	14,12	cyclictest	13	1	rcu_preempt	20:20:12	2
25423	99	69	15,16	cyclictest	13	1	rcu_preempt	21:35:14	2
25423	99	63	12,42	cyclictest	13	1	rcu_preempt	21:30:09	2
25423	99	59	5,5	cyclictest	13	1	rcu_preempt	19:35:12	2
25407	99	57	7,36	cyclictest	12490	-21	ssh	22:40:12	0
25423	99	53	2,7	cyclictest	13	1	rcu_preempt	21:40:13	2
25407	99	53	2,40	cyclictest	29546	-21	ssh	21:20:12	0
25407	99	53	2,40	cyclictest	29546	-21	ssh	21:20:11	0
25407	99	49	3,37	cyclictest	15202	-21	ssh	21:30:10	0
25423	99	46	1,26	cyclictest	21504	-21	ssh	22:45:10	2
25435	99	43	19,12	cyclictest	359	66	irq/58-eth0	21:25:11	3
25414	99	40	2,34	cyclictest	21514	-21	ssh	22:45:11	1
25407	99	39	0,30	cyclictest	30534	-21	ssh	22:50:14	0
25423	99	38	2,20	cyclictest	3745	-21	sshd	00:05:13	2
25407	99	38	4,27	cyclictest	905	-21	ssh	21:40:12	0
25435	99	37	4,22	cyclictest	359	66	irq/58-eth0	23:55:11	3
25435	99	37	1,19	cyclictest	359	66	irq/58-eth0	21:10:14	3
25414	99	36	9,17	cyclictest	13683	-21	ssh	22:05:12	1
25407	99	36	4,21	cyclictest	17757	-21	ssh	22:25:14	0
25407	99	36	3,27	cyclictest	16200	-21	ssh	23:00:15	0
25435	99	35	2,14	cyclictest	359	66	irq/58-eth0	00:05:12	3
25414	99	35	1,28	cyclictest	22779	-21	sh	22:10:14	1
25414	99	35	1,24	cyclictest	27227	-21	rm	00:00:13	1
25423	99	34	2,6	cyclictest	13	1	rcu_preempt	21:50:13	2
25407	99	34	2,8	cyclictest	0	-21	swapper/0	21:00:13	0
25407	99	34	1,18	cyclictest	0	-21	swapper/0	22:45:10	0
25435	99	33	24,6	cyclictest	359	66	irq/58-eth0	22:50:13	3
25435	99	33	2,18	cyclictest	359	66	irq/58-eth0	21:40:12	3
25435	99	33	2,17	cyclictest	359	66	irq/58-eth0	22:40:12	3
25423	99	33	5,18	cyclictest	273	46	irq/40-dwc2_hso	00:20:13	2
25423	99	33	1,15	cyclictest	18113	-21	ssh	23:55:11	2
25414	99	33	2,22	cyclictest	4675	-21	ssh	22:00:14	1
25414	99	33	1,19	cyclictest	6161	-21	ssh	21:25:12	1
25407	99	33	7,9	cyclictest	12	-21	ksoftirqd/0	20:00:14	0
25423	99	32	3,24	cyclictest	13	1	rcu_preempt	00:38:50	2
25414	99	32	1,22	cyclictest	25163	-21	ssh	23:05:14	1
25414	99	32	1,22	cyclictest	25163	-21	ssh	23:05:13	1
25423	99	31	3,8	cyclictest	25395	-21	cyclictest	23:00:15	2
25423	99	31	2,23	cyclictest	0	-21	swapper/2	19:40:14	2
25423	99	31	2,23	cyclictest	0	-21	swapper/2	19:40:13	2
25435	99	30	2,20	cyclictest	0	-21	swapper/3	19:35:10	3
25423	99	30	5,16	cyclictest	273	46	irq/40-dwc2_hso	22:05:13	2
25423	99	30	2,21	cyclictest	0	-21	swapper/2	20:55:13	2
25423	99	30	14,11	cyclictest	1465	-21	kworker/2:1	21:20:12	2
25423	99	30	14,11	cyclictest	1465	-21	kworker/2:1	21:20:11	2
25414	99	30	2,19	cyclictest	28088	-21	ssh	21:55:15	1
25414	99	30	1,22	cyclictest	26834	-21	ssh	22:30:14	1
25407	99	30	8,17	cyclictest	18017	-1	kworker/u9:0	00:05:13	0
25407	99	30	2,25	cyclictest	26823	-21	ssh	22:30:12	0
25423	99	29	2,21	cyclictest	20108	-21	ssh	00:13:33	2
25414	99	29	5,7	cyclictest	21	-21	ksoftirqd/1	19:30:12	1
25414	99	29	5,7	cyclictest	21	-21	ksoftirqd/1	19:30:12	1
25414	99	29	2,20	cyclictest	10746	-21	ssh	23:15:12	1
25414	99	29	1,7	cyclictest	21	-21	ksoftirqd/1	23:35:27	1
25414	99	29	14,10	cyclictest	21	-21	ksoftirqd/1	00:15:13	1
25414	99	29	0,22	cyclictest	0	-21	swapper/1	20:45:12	1
25414	99	29	0,22	cyclictest	0	-21	swapper/1	20:45:11	1
25407	99	29	2,8	cyclictest	12	-21	ksoftirqd/0	23:30:12	0
25435	99	28	14,8	cyclictest	359	66	irq/58-eth0	00:20:13	3
25423	99	28	3,15	cyclictest	273	46	irq/40-dwc2_hso	19:50:13	2
25423	99	28	2,17	cyclictest	273	46	irq/40-dwc2_hso	21:00:14	2
25414	99	28	6,5	cyclictest	21	-21	ksoftirqd/1	22:50:31	1
25414	99	28	3,9	cyclictest	17992	-21	tune2fs	22:25:16	1
25414	99	28	2,19	cyclictest	7069	-21	ssh	22:55:11	1
25414	99	28	19,3	cyclictest	30336	-21	apt-get	19:15:14	1
25414	99	28	11,12	cyclictest	630	-21	Async	09:36:31	1
25407	99	28	5,15	cyclictest	25395	-21	cyclictest	19:50:12	0
25407	99	28	3,21	cyclictest	32584	-21	ssh	23:45:13	0
25407	99	28	2,21	cyclictest	30795	-21	ssh	00:20:14	0
25407	99	28	12,3	cyclictest	0	-21	swapper/0	21:37:33	0
25435	99	27	1,15	cyclictest	359	66	irq/58-eth0	22:20:12	3
25423	99	27	4,17	cyclictest	273	46	irq/40-dwc2_hso	22:25:14	2
25414	99	27	6,5	cyclictest	21	-21	ksoftirqd/1	23:20:29	1
25414	99	27	4,5	cyclictest	21	-21	ksoftirqd/1	21:53:27	1
25414	99	27	3,5	cyclictest	21	-21	ksoftirqd/1	21:10:15	1
25414	99	27	3,15	cyclictest	9140	-21	ssh	23:50:13	1
25414	99	27	19,4	cyclictest	897	-21	apt-get	21:40:13	1
25407	99	27	9,9	cyclictest	12	-21	ksoftirqd/0	00:10:12	0
25407	99	27	4,4	cyclictest	13	1	rcu_preempt	00:03:21	0
25407	99	27	2,19	cyclictest	31873	-21	ssh	22:15:13	0
25407	99	27	1,18	cyclictest	23418	-21	ssh	23:20:25	0
25423	99	26	3,15	cyclictest	273	46	irq/40-dwc2_hso	22:00:13	2
25423	99	26	18,5	cyclictest	32758	-21	ssh	22:15:19	2
25423	99	26	1,21	cyclictest	11704	-21	cut	21:10:16	2
25414	99	26	5,4	cyclictest	20	1	rcuc/1	00:25:07	1
25414	99	26	4,6	cyclictest	21	-21	ksoftirqd/1	23:27:31	1
25414	99	26	3,6	cyclictest	21	-21	ksoftirqd/1	22:20:28	1
25414	99	26	2,18	cyclictest	25121	-21	sh	00:35:14	1
25414	99	26	19,3	cyclictest	31848	-21	ssh	22:15:12	1
25407	99	26	6,12	cyclictest	0	-21	swapper/0	19:35:13	0
25407	99	26	5,18	cyclictest	12	-21	ksoftirqd/0	21:55:15	0
25435	99	25	2,16	cyclictest	359	66	irq/58-eth0	23:00:15	3
25423	99	25	4,14	cyclictest	25557	-21	apt-get	19:10:10	2
25423	99	25	3,13	cyclictest	273	46	irq/40-dwc2_hso	20:50:13	2
25423	99	25	2,9	cyclictest	0	-21	swapper/2	20:10:14	2
25423	99	25	1,15	cyclictest	32553	-21	find	23:45:12	2
25423	99	25	1,11	cyclictest	0	-21	swapper/2	23:29:47	2
25414	99	25	6,5	cyclictest	21	-21	ksoftirqd/1	21:30:19	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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