OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #6

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 rack0slot6s.osadl.org (updated Sat Jul 18, 2026 00:46:22)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2291614	2	221	207,8	sleep1	0	-21	swapper/1	19:05:57	1
2535855	2	72	0,0	sleep5	0	-21	swapper/5	23:59:45	15
2291959	2	54	48,3	sleep15	0	-21	swapper/15	19:09:31	7
2000	99	52	0,50	ntpd	0	-21	swapper/10	19:05:18	2
2292431	99	51	24,27	cyclictest	0	-21	swapper/14	19:46:59	6
2291756	2	51	44,4	sleep18	0	-21	swapper/18	19:07:14	10
2291840	2	50	45,3	sleep13	0	-21	swapper/13	19:08:09	5
2291889	2	49	44,3	sleep6	0	-21	swapper/6	19:08:42	16
2292412	99	48	13,30	cyclictest	98	-21	ksoftirqd/8	20:45:59	18
2292431	99	45	36,8	cyclictest	0	-21	swapper/14	00:32:59	6
2292412	99	45	42,2	cyclictest	2301213	-40	tracker-miner-f	19:15:59	18
2292412	99	44	40,1	cyclictest	2368509	-40	tracker-miner-f	20:40:00	18
2292431	99	43	23,0	cyclictest	0	-21	swapper/14	21:39:59	6
2291901	2	43	37,3	sleep17	0	-21	swapper/17	19:08:53	9
2291892	2	43	38,3	sleep9	0	-21	swapper/9	19:08:45	19
2291573	2	43	37,3	sleep8	0	-21	swapper/8	19:05:24	18
2292431	99	41	36,5	cyclictest	0	-21	swapper/14	22:19:59	6
2292402	99	41	0,0	cyclictest	0	-21	swapper/5	21:22:59	15
2291731	2	41	35,3	sleep2	0	-21	swapper/2	19:06:58	12
2291604	2	41	35,3	sleep14	0	-21	swapper/14	19:05:50	6
2292390	99	40	0,0	cyclictest	0	-21	swapper/1	00:05:59	1
2291831	2	40	34,3	sleep4	0	-21	swapper/4	19:08:00	14
2292402	99	39	31,8	cyclictest	0	-21	swapper/5	21:31:59	15
2292402	99	39	30,0	cyclictest	0	-21	swapper/5	22:05:59	15
2292390	99	39	0,3	cyclictest	2389052	-40	tracker-miner-f	21:00:59	1
2292386	99	39	29,9	cyclictest	2422577	-40	tracker-miner-f	21:41:59	0
2291671	2	39	34,3	sleep12	0	-21	swapper/12	19:06:28	4
2292448	99	38	9,28	cyclictest	195	1	irq_work/19	21:19:31	11
2292397	99	38	37,0	cyclictest	0	-21	swapper/3	20:06:59	13
2291576	2	38	33,3	sleep11	0	-21	swapper/11	19:05:27	3
2292448	99	37	0,36	cyclictest	0	-21	swapper/19	21:10:00	11
2292397	99	37	10,27	cyclictest	0	-21	swapper/3	00:20:59	13
2292390	99	37	0,28	cyclictest	0	-21	swapper/1	21:26:59	1
2291942	2	37	32,3	sleep3	0	-21	swapper/3	19:09:19	13
2291753	2	37	31,3	sleep16	0	-21	swapper/16	19:07:12	8
2291613	2	37	31,3	sleep0	0	-21	swapper/0	19:05:56	0
2292416	99	36	0,1	cyclictest	2309740	-40	tracker-miner-f	19:28:28	19
2292402	99	36	30,6	cyclictest	0	-21	swapper/5	23:08:59	15
2292402	99	36	0,0	cyclictest	0	-21	swapper/5	00:29:59	15
2292397	99	36	36,0	cyclictest	0	-21	swapper/3	20:02:59	13
2292393	99	36	10,26	cyclictest	0	-21	swapper/2	19:46:59	12
2292390	99	36	7,7	cyclictest	0	-21	swapper/1	20:14:59	1
2292386	99	36	29,6	cyclictest	0	-21	swapper/0	00:06:59	0
2291630	2	36	32,2	sleep7	0	-21	swapper/7	19:06:03	17
2291586	2	36	30,3	sleep19	0	-21	swapper/19	19:05:35	11
2288593	2	36	31,3	sleep5	0	-21	swapper/5	19:05:01	15
2292448	99	35	0,34	cyclictest	2451983	-40	tracker-miner-f	22:17:59	11
2292431	99	35	35,0	cyclictest	0	-21	swapper/14	22:56:59	6
2292416	99	35	0,35	cyclictest	0	-21	swapper/9	20:55:59	19
2292416	99	35	0,34	cyclictest	2343355	-40	tracker-miner-f	20:09:53	19
2292400	99	35	0,34	cyclictest	0	-21	swapper/4	22:33:59	14
2292448	99	34	34,0	cyclictest	0	-21	swapper/19	23:11:59	11
2292448	99	34	34,0	cyclictest	0	-21	swapper/19	20:11:46	11
2292441	99	34	0,33	cyclictest	0	-21	swapper/17	20:36:00	9
2292441	99	34	0,33	cyclictest	0	-21	swapper/17	19:29:59	9
2292416	99	34	34,0	cyclictest	0	-21	swapper/9	21:25:59	19
2292416	99	34	34,0	cyclictest	0	-21	swapper/9	21:15:00	19
2292416	99	34	34,0	cyclictest	0	-21	swapper/9	20:19:17	19
2292416	99	34	34,0	cyclictest	0	-21	swapper/9	20:19:17	19
2292410	99	34	0,33	cyclictest	2309740	-40	tracker-miner-f	19:28:00	17
2292410	99	34	0,33	cyclictest	0	-21	swapper/7	23:42:00	17
2292410	99	34	0,33	cyclictest	0	-21	swapper/7	23:42:00	17
2292410	99	34	0,33	cyclictest	0	-21	swapper/7	22:41:59	17
2292410	99	34	0,33	cyclictest	0	-21	swapper/7	20:13:00	17
2292410	99	34	0,33	cyclictest	0	-21	swapper/7	19:57:00	17
2292406	99	34	0,33	cyclictest	0	-21	swapper/6	22:10:59	16
2292406	99	34	0,1	cyclictest	2548249	-40	tracker-miner-f	00:11:59	16
2292402	99	34	33,1	cyclictest	2439514	-40	tracker-miner-f	22:03:59	15
2292402	99	34	31,3	cyclictest	0	-21	swapper/5	21:43:59	15
2292400	99	34	32,1	cyclictest	2494018	-40	tracker-miner-f	23:08:59	14
2292400	99	34	0,33	cyclictest	0	-21	swapper/4	22:29:00	14
2292393	99	34	32,1	cyclictest	0	-21	swapper/2	19:30:20	12
2292390	99	34	26,8	cyclictest	0	-21	swapper/1	22:21:59	1
2292390	99	34	26,6	cyclictest	0	-21	swapper/1	23:24:59	1
2292390	99	34	1,14	cyclictest	2376647	-40	tracker-miner-f	20:47:59	1
2292386	99	34	28,6	cyclictest	2397644	-40	tracker-miner-f	21:13:59	0
2292386	99	34	28,6	cyclictest	0	-21	swapper/0	21:09:59	0
2292386	99	34	24,9	cyclictest	2485606	-40	tracker-miner-f	22:58:59	0
2292448	99	33	33,0	cyclictest	0	-21	swapper/19	23:37:59	11
2292448	99	33	33,0	cyclictest	0	-21	swapper/19	23:37:59	11
2292448	99	33	33,0	cyclictest	0	-21	swapper/19	21:26:00	11
2292448	99	33	33,0	cyclictest	0	-21	swapper/19	20:20:59	11
2292448	99	33	33,0	cyclictest	0	-21	swapper/19	20:20:59	11
2292448	99	33	33,0	cyclictest	0	-21	swapper/19	00:26:00	11
2292448	99	33	31,1	cyclictest	2527298	-40	tracker-miner-f	23:48:00	11
2292448	99	33	0,33	cyclictest	0	-21	swapper/19	22:59:00	11
2292448	99	33	0,33	cyclictest	0	-21	swapper/19	19:14:59	11
2292445	99	33	33,0	cyclictest	0	-21	swapper/18	22:12:59	10
2292445	99	33	0,32	cyclictest	0	-21	swapper/18	22:18:59	10
2292441	99	33	33,0	cyclictest	0	-21	swapper/17	22:14:59	9
2292441	99	33	33,0	cyclictest	0	-21	swapper/17	00:34:59	9
2292441	99	33	32,1	cyclictest	0	-21	swapper/17	23:40:00	9
2292441	99	33	32,1	cyclictest	0	-21	swapper/17	23:40:00	9
2292441	99	33	32,1	cyclictest	0	-21	swapper/17	00:25:59	9
2292441	99	33	0,33	cyclictest	0	-21	swapper/17	23:05:59	9
2292441	99	33	0,33	cyclictest	0	-21	swapper/17	22:48:00	9
2292441	99	33	0,33	cyclictest	0	-21	swapper/17	21:32:59	9
2292441	99	33	0,33	cyclictest	0	-21	swapper/17	21:20:00	9
2292441	99	33	0,33	cyclictest	0	-21	swapper/17	20:49:00	9
2292441	99	33	0,32	cyclictest	0	-21	swapper/17	22:58:00	9
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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