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 Wed Jul 08, 2026 00:45:18)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
6170	99	79	40,34	cyclictest	359	66	irq/58-eth0	22:15:13	3
6162	99	71	3,41	cyclictest	9423	-21	ssh	00:00:14	2
6162	99	67	13,8	cyclictest	27	-21	ksoftirqd/2	23:00:13	2
6146	99	61	2,40	cyclictest	13645	-21	ssh	21:39:40	0
6146	99	57	1,44	cyclictest	24721	-21	ssh	21:10:15	0
6170	99	56	25,21	cyclictest	359	66	irq/58-eth0	23:45:13	3
6146	99	54	1,47	cyclictest	0	-21	swapper/0	23:45:13	0
6170	99	53	3,35	cyclictest	359	66	irq/58-eth0	23:50:15	3
6154	99	53	8,8	cyclictest	13	1	rcu_preempt	20:55:13	1
6146	99	53	1,41	cyclictest	5542	-21	ssh	23:40:13	0
6146	99	51	2,44	cyclictest	0	-21	swapper/0	20:35:13	0
6154	99	49	3,9	cyclictest	13	1	rcu_preempt	20:45:13	1
6170	99	48	5,27	cyclictest	359	66	irq/58-eth0	19:50:12	3
6170	99	48	5,27	cyclictest	359	66	irq/58-eth0	19:50:11	3
6146	99	48	2,39	cyclictest	4272	-21	apt-get	22:10:13	0
6146	99	48	1,41	cyclictest	0	-21	swapper/0	20:40:12	0
6146	99	46	2,39	cyclictest	0	-21	swapper/0	21:45:13	0
6146	99	46	2,39	cyclictest	0	-21	swapper/0	21:45:13	0
6146	99	46	1,38	cyclictest	25594	-21	apt-get	19:30:13	0
6162	99	45	5,7	cyclictest	273	46	irq/40-dwc2_hso	21:25:14	2
6146	99	45	1,41	cyclictest	0	-21	swapper/0	23:05:14	0
6162	99	44	2,31	cyclictest	13422	-21	ssh	22:15:13	2
6154	99	43	3,6	cyclictest	13	1	rcu_preempt	23:00:13	1
6154	99	43	2,36	cyclictest	27494	-21	ssh	00:10:13	1
6146	99	43	13,15	cyclictest	42	-21	kauditd	20:30:00	0
6170	99	42	26,11	cyclictest	359	66	irq/58-eth0	21:10:13	3
6146	99	42	7,24	cyclictest	17248	-21	sh	22:35:12	0
6146	99	42	3,34	cyclictest	23736	-21	ssh	23:50:12	0
6146	99	42	2,2	cyclictest	445	-21	apt-get	20:45:12	0
6146	99	42	1,5	cyclictest	0	-21	swapper/0	21:00:12	0
6146	99	42	1,36	cyclictest	0	-21	swapper/0	23:15:15	0
6146	99	42	1,36	cyclictest	0	-21	swapper/0	00:00:13	0
6146	99	42	1,34	cyclictest	13332	-21	ssh	00:20:12	0
6146	99	42	1,34	cyclictest	13332	-21	ssh	00:20:12	0
6170	99	41	5,25	cyclictest	359	66	irq/58-eth0	23:00:12	3
6170	99	41	4,23	cyclictest	359	66	irq/58-eth0	21:55:12	3
6154	99	41	1,32	cyclictest	32739	-21	ssh	23:55:13	1
6146	99	41	1,35	cyclictest	1318	-21	apt-get	21:15:14	0
6162	99	40	7,22	cyclictest	27	-21	ksoftirqd/2	23:15:15	2
6162	99	40	2,32	cyclictest	6042	-21	ssh	23:56:31	2
6146	99	40	4,33	cyclictest	4223	-21	ssh	00:15:13	0
6146	99	40	1,36	cyclictest	0	-21	swapper/0	21:05:11	0
6146	99	40	1,35	cyclictest	0	-21	swapper/0	22:20:13	0
6170	99	39	3,27	cyclictest	359	66	irq/58-eth0	21:30:14	3
6146	99	39	1,3	cyclictest	0	-21	swapper/0	20:20:14	0
6146	99	39	1,2	cyclictest	0	-21	swapper/0	00:05:12	0
6146	99	39	1,25	cyclictest	8672	-21	sh	23:23:05	0
6146	99	39	0,10	cyclictest	4231	-21	find	21:50:29	0
6170	99	38	4,22	cyclictest	359	66	irq/58-eth0	23:55:11	3
6170	99	38	4,19	cyclictest	359	66	irq/58-eth0	22:00:13	3
6170	99	38	4,19	cyclictest	359	66	irq/58-eth0	22:00:13	3
6170	99	38	1,22	cyclictest	359	66	irq/58-eth0	20:35:14	3
6162	99	38	1,32	cyclictest	0	-21	swapper/2	22:08:40	2
6162	99	38	1,32	cyclictest	0	-21	swapper/2	22:08:39	2
6154	99	38	18,13	cyclictest	21	-21	ksoftirqd/1	22:50:13	1
6146	99	38	1,33	cyclictest	19706	-21	apt-get	23:30:10	0
6146	99	38	1,2	cyclictest	28605	-21	apt-get	21:30:15	0
6146	99	38	0,5	cyclictest	14180	-21	ssh	21:40:02	0
6170	99	37	15,13	cyclictest	359	66	irq/58-eth0	22:50:12	3
6146	99	37	1,31	cyclictest	30219	-21	apt-get	23:00:12	0
6170	99	36	4,19	cyclictest	359	66	irq/58-eth0	22:45:14	3
6170	99	36	2,20	cyclictest	359	66	irq/58-eth0	21:45:13	3
6170	99	36	2,20	cyclictest	359	66	irq/58-eth0	21:45:12	3
6146	99	36	3,29	cyclictest	13411	-21	apt-get	22:15:13	0
6146	99	36	1,3	cyclictest	0	-21	swapper/0	20:05:12	0
6146	99	36	1,31	cyclictest	7825	-21	grep	19:45:18	0
6146	99	36	1,31	cyclictest	7825	-21	grep	19:45:18	0
6146	99	36	1,31	cyclictest	20642	-21	tr	20:30:23	0
6146	99	36	1,31	cyclictest	20642	-21	tr	20:30:22	0
6146	99	36	1,30	cyclictest	12116	-21	apt-get	22:50:12	0
6146	99	36	1,23	cyclictest	27233	-21	ssh	21:28:52	0
6146	99	36	0,7	cyclictest	3248	-21	cut	19:40:18	0
6146	99	35	1,3	cyclictest	31669	-21	apt-get	20:10:14	0
6146	99	35	1,30	cyclictest	25464	-21	ntp_192.168.114	20:00:23	0
6146	99	35	1,30	cyclictest	25464	-21	ntp_192.168.114	20:00:23	0
6146	99	35	1,30	cyclictest	18740	-21	fschecks_time	22:00:17	0
6146	99	35	1,30	cyclictest	18740	-21	fschecks_time	22:00:16	0
6146	99	35	1,2	cyclictest	21170	-21	apt-get	22:55:13	0
6170	99	34	2,21	cyclictest	359	66	irq/58-eth0	21:35:13	3
6170	99	34	2,18	cyclictest	359	66	irq/58-eth0	00:05:11	3
6162	99	34	2,19	cyclictest	27	-21	ksoftirqd/2	20:20:13	2
6154	99	34	3,18	cyclictest	13409	-21	ssh	22:15:13	1
6154	99	34	1,25	cyclictest	19723	-21	ssh	23:30:11	1
6146	99	34	1,8	cyclictest	2465	-21	kthreadcore	23:55:20	0
6146	99	34	1,2	cyclictest	0	-21	swapper/0	23:10:13	0
6146	99	34	1,29	cyclictest	20836	-21	fschecks_count	19:25:16	0
6146	99	34	1,11	cyclictest	22491	-21	ssh	00:25:16	0
6162	99	33	1,20	cyclictest	5544	-21	rm	23:40:13	2
6146	99	33	1,9	cyclictest	11454	-21	ssh	23:25:19	0
6146	99	33	1,7	cyclictest	6707	-21	ntp_192.168.114	22:45:27	0
6146	99	33	1,2	cyclictest	0	-21	swapper/0	20:50:28	0
6146	99	33	1,29	cyclictest	30909	-21	kthreadcore	23:35:21	0
6146	99	33	1,28	cyclictest	28290	-21	sed	22:05:17	0
6146	99	33	1,28	cyclictest	28290	-21	sed	22:05:17	0
6146	99	33	1,28	cyclictest	15896	-21	latency_hist	19:20:02	0
6146	99	33	1,28	cyclictest	13245	-21	kthreadcore	19:50:18	0
6146	99	33	1,28	cyclictest	13245	-21	kthreadcore	19:50:18	0
6146	99	33	1,20	cyclictest	0	-21	swapper/0	00:33:42	0
6146	99	33	0,11	cyclictest	20721	-21	ntp_states	19:55:25	0
6170	99	32	3,18	cyclictest	359	66	irq/58-eth0	23:35:13	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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