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
Special All - All RT - Optimization - Ethernet - Thumbnails - Next

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 Thu Sep 17, 2026 00:45:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
21063	99	51	4,26	cyclictest	359	66	irq/58-eth0	22:10:13	3
21047	99	51	6,39	cyclictest	11967	-21	ssh	23:55:13	1
21063	99	50	29,12	cyclictest	359	66	irq/58-eth0	21:20:12	3
21036	99	50	37,10	cyclictest	29726	-21	apt-get	21:00:13	0
21036	99	47	38,7	cyclictest	5709	-21	apt-get	20:35:12	0
21063	99	46	25,15	cyclictest	0	-21	swapper/3	21:50:13	3
21063	99	46	25,10	cyclictest	359	66	irq/58-eth0	22:25:12	3
21047	99	45	2,38	cyclictest	22829	-21	ssh	23:25:14	1
21036	99	44	17,10	cyclictest	30797	-21	ssh	21:21:33	0
21055	99	43	15,19	cyclictest	13852	-21	ssh	23:20:12	2
21036	99	43	18,11	cyclictest	9088	-21	ssh	21:45:27	0
21036	99	43	17,8	cyclictest	9404	-21	ssh	00:29:46	0
21036	99	43	17,16	cyclictest	16041	-21	ssh	21:31:08	0
21036	99	43	16,8	cyclictest	24887	-21	ssh	22:30:23	0
21036	99	43	16,10	cyclictest	9533	-21	ssh	22:59:20	0
21036	99	43	16,10	cyclictest	9533	-21	ssh	22:59:20	0
21036	99	43	16,10	cyclictest	26673	-21	ssh	21:38:10	0
21036	99	43	16,10	cyclictest	15871	-21	ssh	22:08:10	0
21036	99	43	16,10	cyclictest	15871	-21	ssh	22:08:10	0
21036	99	43	16,10	cyclictest	14334	-21	ssh	23:36:54	0
21036	99	43	13,8	cyclictest	26539	-21	ssh	23:45:17	0
21036	99	43	13,11	cyclictest	24917	-21	cut	21:55:20	0
21055	99	42	31,8	cyclictest	32023	-21	apt-get	19:55:12	2
21055	99	42	21,15	cyclictest	15921	-21	ssh	22:45:13	2
21055	99	42	14,21	cyclictest	0	-21	swapper/2	23:45:13	2
21047	99	42	4,17	cyclictest	21	-21	ksoftirqd/1	20:10:12	1
21047	99	42	3,30	cyclictest	10504	-21	ssh	23:00:13	1
21036	99	42	30,8	cyclictest	15915	-21	apt-get	22:45:14	0
21036	99	42	18,8	cyclictest	10596	-21	irqrtprio	00:30:20	0
21036	99	42	17,9	cyclictest	3152	-21	cat	22:00:21	0
21036	99	42	17,8	cyclictest	7718	-21	ssh	21:26:56	0
21036	99	42	17,10	cyclictest	12890	-21	rm	00:12:16	0
21036	99	42	16,10	cyclictest	3744	-21	ssh	23:14:06	0
21036	99	42	16,10	cyclictest	12680	-21	ssh	23:19:04	0
21036	99	42	13,11	cyclictest	7479	-21	ssh	23:34:29	0
21036	99	42	13,11	cyclictest	7479	-21	ssh	23:34:29	0
21036	99	41	16,9	cyclictest	30398	-21	ssh	22:51:11	0
21036	99	41	16,9	cyclictest	2088	-21	ssh	22:18:59	0
21036	99	41	16,11	cyclictest	15274	-21	ssh	21:14:38	0
21036	99	41	15,10	cyclictest	32716	-21	ssh	00:24:35	0
21036	99	41	13,9	cyclictest	23626	-21	ssh	23:05:29	0
21036	99	40	33,4	cyclictest	16014	-21	apt-get	21:15:15	0
21036	99	40	33,3	cyclictest	2088	-21	apt-get	21:05:15	0
21036	99	40	16,7	cyclictest	22005	-21	ssh	23:24:32	0
21036	99	40	15,9	cyclictest	21705	-21	ssh	00:17:03	0
21036	99	40	15,16	cyclictest	6666	-21	diskmemload	23:57:56	0
21036	99	40	15,10	cyclictest	9272	-21	sort	20:05:13	0
21047	99	39	2,26	cyclictest	6914	-21	ssh	22:40:11	1
21047	99	39	2,25	cyclictest	26329	-21	ssh	23:45:14	1
21036	99	39	33,3	cyclictest	12816	-21	apt-get	19:35:12	0
21036	99	39	16,8	cyclictest	2880	-21	ssh	21:42:42	0
21036	99	39	16,7	cyclictest	6666	-21	diskmemload	22:35:03	0
21036	99	39	16,7	cyclictest	18849	-21	grep	21:50:30	0
21036	99	39	16,10	cyclictest	27638	-21	rm	00:02:40	0
21036	99	39	14,9	cyclictest	4198	-21	ssh	00:07:35	0
21036	99	39	14,10	cyclictest	29413	-21	missed_timers	19:15:23	0
21036	99	39	14,10	cyclictest	10231	-21	rm	22:22:55	0
21036	99	39	12,8	cyclictest	12576	-21	sshd	19:34:46	0
21036	99	39	11,9	cyclictest	8769	-21	ssh	23:51:39	0
21063	99	38	15,14	cyclictest	359	66	irq/58-eth0	20:10:12	3
21055	99	38	10,10	cyclictest	26153	-21	rm	21:37:33	2
21047	99	38	2,23	cyclictest	24568	-21	ssh	00:20:13	1
21036	99	38	17,16	cyclictest	0	-21	swapper/0	20:25:13	0
21036	99	38	16,9	cyclictest	26741	-21	ssh	00:38:54	0
21036	99	38	16,13	cyclictest	6666	-21	diskmemload	22:10:03	0
21036	99	38	15,9	cyclictest	25128	-21	idleruntime	20:55:18	0
21036	99	38	14,8	cyclictest	6666	-21	diskmemload	22:29:47	0
21036	99	38	14,8	cyclictest	24017	-21	cut	23:25:20	0
21036	99	38	10,10	cyclictest	11709	-21	cat	22:40:29	0
21055	99	37	26,3	cyclictest	26873	-21	apt-get	22:15:17	2
21036	99	37	15,8	cyclictest	15545	-21	rm	23:00:41	0
21036	99	37	14,9	cyclictest	23566	-21	sh	23:42:13	0
21055	99	36	26,7	cyclictest	10671	-21	apt-get	21:30:12	2
21055	99	36	17,16	cyclictest	0	-21	swapper/2	23:05:12	2
21047	99	36	1,28	cyclictest	30384	-21	sh	22:35:13	1
21036	99	36	9,9	cyclictest	664	-21	ntpd	20:00:24	0
21036	99	36	9,11	cyclictest	24853	-21	cut	19:45:21	0
21055	99	35	7,19	cyclictest	0	-21	swapper/2	23:27:21	2
21055	99	35	3,15	cyclictest	31965	-21	ssh	23:30:15	2
21055	99	35	3,15	cyclictest	31965	-21	ssh	23:30:15	2
21055	99	35	29,3	cyclictest	18893	-21	apt-get	20:15:15	2
21055	99	35	23,9	cyclictest	23123	-21	ssh	21:55:11	2
21055	99	35	15,16	cyclictest	0	-21	swapper/2	20:45:13	2
21055	99	35	15,15	cyclictest	0	-21	swapper/2	20:55:14	2
21036	99	35	16,4	cyclictest	22291	-21	ntp_192.168.114	20:15:27	0
21055	99	34	8,10	cyclictest	26876	-21	ssh	00:39:04	2
21055	99	34	4,20	cyclictest	0	-21	swapper/2	00:17:55	2
21055	99	34	20,12	cyclictest	273	46	irq/40-dwc2_hso	20:25:13	2
21055	99	34	18,13	cyclictest	0	-21	swapper/2	21:50:11	2
21055	99	34	12,18	cyclictest	0	-21	swapper/2	22:05:12	2
21055	99	34	12,18	cyclictest	0	-21	swapper/2	22:05:12	2
21055	99	34	12,17	cyclictest	0	-21	swapper/2	21:15:15	2
21036	99	34	24,8	cyclictest	15142	-21	sed	20:45:02	0
21036	99	34	22,7	cyclictest	21249	-21	apt-get	19:10:11	0
21036	99	34	18,12	cyclictest	867	-21	apt-get	20:30:12	0
21036	99	34	14,7	cyclictest	4310	-21	cat	20:00:02	0
21036	99	34	10,10	cyclictest	31138	-21	cat	19:20:17	0
21063	99	33	1,18	cyclictest	359	66	irq/58-eth0	21:30:12	3
21055	99	33	8,12	cyclictest	12766	-21	ssh	23:19:11	2
21055	99	33	8,11	cyclictest	13325	-21	ssh	00:12:48	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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