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2024-07-27 - 04:02

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #5

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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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 50 highest latencies:
System rackeslot5s.osadl.org (updated Fri Jul 26, 2024 12:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1474699260,25cyclictest637-21sh09:35:383
1473599260,25cyclictest25884-21munin-run10:35:010
1474299250,24cyclictest8044-21diskmemload10:34:112
1474299250,24cyclictest0-21swapper/209:27:292
1473599250,24cyclictest11601-21ssh10:20:030
1474699240,2cyclictest13812-21ssh09:15:373
1474699240,23cyclictest20729-21sh11:36:213
1474699240,23cyclictest0-21swapper/311:25:413
1474699240,23cyclictest0-21swapper/311:25:413
1474699240,23cyclictest0-21swapper/310:05:303
14742992422,1cyclictest0-21swapper/211:05:242
14742992420,4cyclictest0-21swapper/209:21:322
1474299240,23cyclictest8044-21diskmemload11:11:462
1474299240,23cyclictest8044-21diskmemload09:15:252
1474299240,23cyclictest11362-21sh10:53:022
1474299240,23cyclictest0-21swapper/210:27:262
1474299240,23cyclictest0-21swapper/210:12:302
1474299240,1cyclictest0-21swapper/209:38:402
1473899240,24cyclictest0-21swapper/110:21:181
1473899240,0cyclictest8044-21diskmemload09:53:361
1473899240,0cyclictest8044-21diskmemload09:53:361
1473899240,0cyclictest0-21swapper/109:19:581
14735992421,2cyclictest14544-21awk09:50:010
1473599240,24cyclictest0-21swapper/011:26:180
1473599240,24cyclictest0-21swapper/011:26:180
1473599240,24cyclictest0-21swapper/010:04:010
1473599240,24cyclictest0-21swapper/009:20:560
1473599240,23cyclictest8044-21diskmemload10:43:370
1473599240,23cyclictest29791-21ssh11:45:150
1473599240,23cyclictest20307-21rm09:56:200
1473599240,23cyclictest16061-21ssh09:52:210
1473599240,23cyclictest16061-21ssh09:52:210
1473599240,23cyclictest0-21swapper/011:00:450
1473599240,0cyclictest0-21swapper/010:27:240
14746992323,0cyclictest8044-21diskmemload10:30:553
14746992323,0cyclictest0-21swapper/310:39:043
14746992323,0cyclictest0-21swapper/310:00:233
14746992321,1cyclictest0-21swapper/311:00:353
14746992321,1cyclictest0-21swapper/310:52:383
14746992321,1cyclictest0-21swapper/310:47:463
1474699230,23cyclictest0-21swapper/311:17:353
1474699230,22cyclictest8060-21ls09:10:013
1474699230,22cyclictest32476-21sh09:35:003
1474699230,22cyclictest2470-21ssh10:10:513
1474699230,22cyclictest19522-21ssh09:22:123
1474699230,22cyclictest0-21swapper/309:48:083
1474699230,1cyclictest0-21swapper/311:41:553
1474699230,0cyclictest8044-21diskmemload11:08:073
1474699230,0cyclictest0-21swapper/309:43:253
1474699230,0cyclictest0-21swapper/309:25:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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