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 Sun May 31, 2026 00:45:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
7321	99	64	27,18	cyclictest	27	-21	ksoftirqd/2	00:25:13	2
7333	99	61	39,17	cyclictest	359	66	irq/58-eth0	22:35:13	3
7321	99	59	1,31	cyclictest	30728	-21	ssh	22:25:13	2
7321	99	57	2,28	cyclictest	18065	-21	ssh	23:30:12	2
7301	99	55	1,19	cyclictest	1794	-21	sh	22:45:14	0
7301	99	54	44,4	cyclictest	5465	-21	ssh	23:05:14	0
7321	99	52	0,28	cyclictest	0	-21	swapper/2	23:00:12	2
7301	99	46	6,16	cyclictest	3514	-21	ssh	23:40:12	0
7333	99	44	6,22	cyclictest	359	66	irq/58-eth0	23:10:12	3
7321	99	42	0,31	cyclictest	0	-21	swapper/2	21:45:13	2
7321	99	41	14,22	cyclictest	27	-21	ksoftirqd/2	20:00:13	2
7321	99	40	14,10	cyclictest	2966	-21	ssh	00:33:11	2
7301	99	40	3,7	cyclictest	13	1	rcu_preempt	21:25:14	0
7301	99	40	1,16	cyclictest	12788	-21	ssh	22:15:13	0
7321	99	39	3,27	cyclictest	30554	-21	ssh	23:55:15	2
7321	99	39	1,30	cyclictest	16393	-21	ssh	22:35:13	2
7301	99	39	5,26	cyclictest	32766	-21	ssh	21:50:13	0
7301	99	39	3,33	cyclictest	21643	-21	ssh	23:50:14	0
7301	99	39	2,34	cyclictest	27027	-21	ssh	23:35:14	0
7333	99	38	23,10	cyclictest	359	66	irq/58-eth0	00:15:12	3
7333	99	37	3,26	cyclictest	359	66	irq/58-eth0	21:20:15	3
7321	99	37	3,21	cyclictest	11422	-21	ssh	21:20:15	2
7312	99	37	26,8	cyclictest	29128	-21	apt-get	20:40:13	1
7301	99	37	4,28	cyclictest	23525	-21	ssh	23:15:14	0
7301	99	37	3,7	cyclictest	13	1	rcu_preempt	22:25:13	0
7301	99	37	2,32	cyclictest	21770	-21	ssh	22:20:12	0
7321	99	36	1,24	cyclictest	29269	-21	ssh	21:30:13	2
7301	99	36	3,30	cyclictest	28838	-21	ssh	23:00:13	0
7312	99	35	3,26	cyclictest	19304	-21	ssh	00:25:14	1
7312	99	35	1,27	cyclictest	12533	-21	ssh	23:45:14	1
7301	99	35	18,13	cyclictest	12	-21	ksoftirqd/0	20:45:14	0
7321	99	34	9,15	cyclictest	27	-21	ksoftirqd/2	00:15:13	2
7321	99	34	7,15	cyclictest	26	1	rcuc/2	22:20:14	2
7321	99	34	3,25	cyclictest	0	-21	swapper/2	23:48:05	2
7321	99	34	18,10	cyclictest	5463	-21	sh	23:05:14	2
7321	99	34	1,29	cyclictest	21657	-21	sh	23:50:15	2
7301	99	34	5,26	cyclictest	14498	-21	ssh	23:10:12	0
7301	99	34	1,29	cyclictest	18383	-21	ssh	22:00:14	0
7321	99	33	1,4	cyclictest	13	1	rcu_preempt	22:15:13	2
7312	99	33	5,13	cyclictest	0	-21	swapper/1	21:50:11	1
7312	99	33	25,3	cyclictest	10683	-21	apt-get	22:50:12	1
7333	99	32	14,10	cyclictest	0	-21	swapper/3	22:20:13	3
7321	99	32	3,12	cyclictest	9312	-21	ssh	21:55:10	2
7312	99	32	26,3	cyclictest	20330	-21	apt-get	21:25:13	1
7333	99	31	13,11	cyclictest	359	66	irq/58-eth0	23:35:14	3
7321	99	31	4,16	cyclictest	26	1	rcuc/2	21:50:12	2
7312	99	31	5,17	cyclictest	29259	-21	ssh	21:30:12	1
7312	99	31	20,8	cyclictest	3825	-21	apt-get	19:40:12	1
7301	99	31	21,6	cyclictest	25363	-21	diskmemload	00:00:12	0
7333	99	30	6,18	cyclictest	359	66	irq/58-eth0	23:05:12	3
7333	99	30	22,5	cyclictest	359	66	irq/58-eth0	21:30:11	3
7321	99	30	4,19	cyclictest	273	46	irq/40-dwc2_hso	20:15:12	2
7321	99	30	2,21	cyclictest	0	-21	swapper/2	19:10:12	2
7321	99	30	2,19	cyclictest	3845	-21	ssh	22:10:13	2
7312	99	30	2,22	cyclictest	25406	-21	rm	23:33:32	1
7312	99	30	2,22	cyclictest	15648	-21	sh	23:27:33	1
7312	99	30	18,7	cyclictest	0	-21	swapper/1	21:40:14	1
7312	99	30	16,10	cyclictest	1339	-21	ssh	00:15:12	1
7333	99	29	3,18	cyclictest	359	66	irq/58-eth0	22:10:12	3
7321	99	29	9,10	cyclictest	7293	-21	cyclictest	23:10:12	2
7321	99	29	3,16	cyclictest	273	46	irq/40-dwc2_hso	20:30:11	2
7312	99	29	4,20	cyclictest	19730	-21	ssh	22:55:11	1
7312	99	29	24,2	cyclictest	21760	-21	apt-get	22:20:14	1
7301	99	29	1,9	cyclictest	18084	-21	ssh	23:30:13	0
7333	99	28	14,9	cyclictest	359	66	irq/58-eth0	22:45:14	3
7321	99	28	5,14	cyclictest	273	46	irq/40-dwc2_hso	21:00:13	2
7321	99	28	5,14	cyclictest	273	46	irq/40-dwc2_hso	21:00:12	2
7321	99	28	3,20	cyclictest	0	-21	swapper/2	23:28:33	2
7321	99	28	3,17	cyclictest	273	46	irq/40-dwc2_hso	20:10:13	2
7321	99	28	2,11	cyclictest	0	-21	swapper/2	19:50:14	2
7321	99	28	2,10	cyclictest	10557	-21	ssh	00:36:32	2
7321	99	28	11,14	cyclictest	26409	-21	cron	19:30:02	2
7312	99	28	2,21	cyclictest	996	-21	ssh	22:44:33	1
7312	99	28	2,20	cyclictest	3746	-21	ssh	23:03:33	1
7312	99	28	2,11	cyclictest	7448	-21	ssh	23:23:33	1
7312	99	28	2,11	cyclictest	7448	-21	ssh	23:23:33	1
7312	99	28	12,12	cyclictest	5438	-21	apt-get	23:05:13	1
7301	99	28	2,20	cyclictest	19547	-21	ssh	23:48:06	0
7301	99	28	11,5	cyclictest	14845	-21	ssh	22:33:37	0
7321	99	27	2,20	cyclictest	8440	-21	ssh	23:40:33	2
7312	99	27	20,4	cyclictest	25838	-21	apt-get	21:10:14	1
7301	99	27	4,14	cyclictest	22937	-21	kworker/u8:1	00:10:13	0
7301	99	27	4,11	cyclictest	5833	-21	ssh	21:35:12	0
7301	99	27	2,19	cyclictest	26738	-21	sh	22:58:05	0
7301	99	27	1,21	cyclictest	27337	-21	ssh	22:05:12	0
7333	99	26	3,16	cyclictest	0	-21	swapper/3	23:48:06	3
7333	99	26	2,17	cyclictest	0	-21	swapper/3	23:34:33	3
7321	99	26	3,20	cyclictest	18387	-21	ssh	22:00:14	2
7321	99	26	3,15	cyclictest	273	46	irq/40-dwc2_hso	19:20:12	2
7321	99	26	16,6	cyclictest	27	-21	ksoftirqd/2	22:59:00	2
7321	99	26	14,8	cyclictest	365	-21	if_eth1	23:20:18	2
7321	99	26	14,8	cyclictest	365	-21	if_eth1	23:20:18	2
7312	99	26	2,18	cyclictest	21527	-21	ssh	23:13:06	1
7312	99	26	20,3	cyclictest	30717	-21	apt-get	22:25:13	1
7312	99	26	14,7	cyclictest	11400	-21	apt-get	21:20:15	1
7312	99	26	13,9	cyclictest	0	-21	swapper/1	21:55:11	1
7312	99	26	13,9	cyclictest	0	-21	swapper/1	00:30:11	1
7312	99	26	11,11	cyclictest	21	-21	ksoftirqd/1	22:12:34	1
7301	99	26	2,19	cyclictest	17292	-21	ssh	23:29:34	0
7301	99	26	2,18	cyclictest	17227	-21	ssh	22:52:33	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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