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 04, 2026 00:46:01)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2135980	2	256	215,12	sleep17	0	-21	swapper/17	19:09:36	9
2135871	2	250	243,4	sleep10	0	-21	swapper/10	19:08:09	2
2135953	2	245	206,31	sleep13	0	-21	swapper/13	19:09:12	5
2135854	2	241	233,5	sleep0	0	-21	swapper/0	19:07:59	0
2135955	2	240	220,12	sleep15	0	-21	swapper/15	19:09:14	7
2135901	2	239	220,12	sleep12	0	-21	swapper/12	19:08:31	4
2135869	2	238	219,12	sleep8	0	-21	swapper/8	19:08:07	18
2135742	2	236	217,12	sleep9	0	-21	swapper/9	19:06:27	19
2135970	2	234	215,12	sleep7	0	-21	swapper/7	19:09:26	17
2135904	2	234	214,12	sleep14	0	-21	swapper/14	19:08:33	6
2135683	2	234	215,12	sleep2	0	-21	swapper/2	19:05:40	12
2135892	2	233	212,13	sleep4	0	-21	swapper/4	19:08:23	14
2135752	2	233	212,13	sleep19	0	-21	swapper/19	19:06:36	11
2135699	2	231	212,12	sleep16	0	-21	swapper/16	19:05:54	8
2135915	2	230	211,12	sleep3	0	-21	swapper/3	19:08:42	13
2135893	2	229	209,12	sleep5	0	-21	swapper/5	19:08:24	15
2135867	2	227	208,12	sleep6	0	-21	swapper/6	19:08:05	16
2135702	2	226	206,12	sleep18	0	-21	swapper/18	19:05:56	10
2136006	2	224	205,12	sleep11	0	-21	swapper/11	19:09:50	3
2135912	2	218	199,12	sleep1	0	-21	swapper/1	19:08:40	1
2136408	99	37	0,36	cyclictest	0	-21	swapper/15	22:45:19	7
2136419	99	35	35,0	cyclictest	0	-21	swapper/19	19:27:59	11
2136419	99	35	35,0	cyclictest	0	-21	swapper/19	19:12:59	11
2136417	99	35	35,0	cyclictest	0	-21	swapper/18	22:09:59	10
2136388	99	35	0,34	cyclictest	0	-21	swapper/9	21:03:59	19
2136379	99	35	0,34	cyclictest	0	-21	swapper/6	21:20:59	16
2136379	99	35	0,33	cyclictest	0	-21	swapper/6	20:57:59	16
2136419	99	34	34,0	cyclictest	0	-21	swapper/19	21:38:59	11
2136419	99	34	34,0	cyclictest	0	-21	swapper/19	21:32:59	11
2136419	99	34	34,0	cyclictest	0	-21	swapper/19	00:22:59	11
2136419	99	34	29,2	cyclictest	0	-21	swapper/19	22:44:59	11
2136417	99	34	0,0	cyclictest	0	-21	swapper/18	20:46:59	10
2136414	99	34	0,23	cyclictest	2790	-21	grafana	19:49:59	9
2136414	99	34	0,23	cyclictest	2790	-21	grafana	19:49:59	9
2136388	99	34	34,0	cyclictest	0	-21	swapper/9	22:05:59	19
2136388	99	34	34,0	cyclictest	0	-21	swapper/9	20:55:59	19
2136388	99	34	33,1	cyclictest	0	-21	swapper/9	21:45:59	19
2136388	99	34	0,0	cyclictest	0	-21	swapper/9	00:37:59	19
2136385	99	34	34,0	cyclictest	0	-21	swapper/8	23:18:59	18
2136385	99	34	34,0	cyclictest	0	-21	swapper/8	23:18:59	18
2136385	99	34	34,0	cyclictest	0	-21	swapper/8	22:45:59	18
2136385	99	34	34,0	cyclictest	0	-21	swapper/8	20:27:59	18
2136385	99	34	0,33	cyclictest	0	-21	swapper/8	23:35:59	18
2136374	99	34	0,33	cyclictest	0	-21	swapper/4	23:04:59	14
2136419	99	33	33,0	cyclictest	0	-21	swapper/19	21:14:59	11
2136419	99	33	33,0	cyclictest	0	-21	swapper/19	19:59:59	11
2136419	99	33	32,1	cyclictest	0	-21	swapper/19	22:34:59	11
2136419	99	33	0,0	cyclictest	0	-21	swapper/19	20:08:59	11
2136417	99	33	33,0	cyclictest	0	-21	swapper/18	22:14:59	10
2136417	99	33	33,0	cyclictest	0	-21	swapper/18	21:22:59	10
2136414	99	33	0,33	cyclictest	0	-21	swapper/17	20:47:59	9
2136414	99	33	0,33	cyclictest	0	-21	swapper/17	19:56:59	9
2136408	99	33	0,32	cyclictest	0	-21	swapper/15	21:50:15	7
2136402	99	33	0,32	cyclictest	0	-21	swapper/13	21:55:59	5
2136397	99	33	32,0	cyclictest	0	-21	swapper/12	22:20:59	4
2136397	99	33	32,0	cyclictest	0	-21	swapper/12	21:23:59	4
2136397	99	33	32,0	cyclictest	0	-21	swapper/12	20:09:59	4
2136390	99	33	31,1	cyclictest	0	-21	swapper/10	22:48:59	2
2136388	99	33	33,0	cyclictest	0	-21	swapper/9	23:04:59	19
2136388	99	33	33,0	cyclictest	0	-21	swapper/9	22:17:59	19
2136388	99	33	33,0	cyclictest	0	-21	swapper/9	21:21:59	19
2136388	99	33	33,0	cyclictest	0	-21	swapper/9	20:07:59	19
2136385	99	33	33,0	cyclictest	0	-21	swapper/8	23:42:59	18
2136385	99	33	33,0	cyclictest	0	-21	swapper/8	19:22:59	18
2136385	99	33	0,33	cyclictest	0	-21	swapper/8	22:12:59	18
2136379	99	33	32,1	cyclictest	0	-21	swapper/6	23:54:59	16
2136379	99	33	32,0	cyclictest	0	-21	swapper/6	20:21:59	16
2136379	99	33	0,0	cyclictest	0	-21	swapper/6	23:32:59	16
2136379	99	33	0,0	cyclictest	0	-21	swapper/6	20:31:59	16
2136376	99	33	0,0	cyclictest	0	-21	swapper/5	23:55:59	15
2136374	99	33	33,0	cyclictest	0	-21	swapper/4	22:10:59	14
2136369	99	33	0,33	cyclictest	0	-21	swapper/3	23:45:59	13
2136369	99	33	0,0	cyclictest	0	-21	swapper/3	19:26:59	13
2136364	99	33	0,32	cyclictest	0	-21	swapper/1	22:28:59	1
2136419	99	32	32,0	cyclictest	0	-21	swapper/19	23:38:59	11
2136419	99	32	32,0	cyclictest	0	-21	swapper/19	23:25:59	11
2136419	99	32	32,0	cyclictest	0	-21	swapper/19	21:05:59	11
2136419	99	32	32,0	cyclictest	0	-21	swapper/19	20:33:59	11
2136419	99	32	32,0	cyclictest	0	-21	swapper/19	19:46:59	11
2136419	99	32	32,0	cyclictest	0	-21	swapper/19	19:46:59	11
2136419	99	32	32,0	cyclictest	0	-21	swapper/19	19:36:59	11
2136419	99	32	31,0	cyclictest	0	-21	swapper/19	20:35:59	11
2136419	99	32	0,0	cyclictest	0	-21	swapper/19	19:17:59	11
2136417	99	32	32,0	cyclictest	0	-21	swapper/18	20:34:59	10
2136414	99	32	32,0	cyclictest	0	-21	swapper/17	22:35:59	9
2136414	99	32	32,0	cyclictest	0	-21	swapper/17	21:02:59	9
2136414	99	32	32,0	cyclictest	0	-21	swapper/17	19:43:59	9
2136414	99	32	0,0	cyclictest	0	-21	swapper/17	00:36:59	9
2136408	99	32	32,0	cyclictest	0	-21	swapper/15	23:50:59	7
2136408	99	32	32,0	cyclictest	0	-21	swapper/15	23:30:59	7
2136408	99	32	32,0	cyclictest	0	-21	swapper/15	23:16:59	7
2136408	99	32	32,0	cyclictest	0	-21	swapper/15	23:16:59	7
2136408	99	32	32,0	cyclictest	0	-21	swapper/15	22:42:59	7
2136408	99	32	32,0	cyclictest	0	-21	swapper/15	21:37:59	7
2136408	99	32	32,0	cyclictest	0	-21	swapper/15	21:30:59	7
2136408	99	32	32,0	cyclictest	0	-21	swapper/15	00:17:59	7
2136402	99	32	32,0	cyclictest	0	-21	swapper/13	23:51:59	5
2136402	99	32	32,0	cyclictest	0	-21	swapper/13	23:36:59	5
2136397	99	32	31,0	cyclictest	0	-21	swapper/12	22:39:59	4
2136392	99	32	31,0	cyclictest	0	-21	swapper/11	20:06:59	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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