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2024-05-28 - 06:17

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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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 rackeslot5s.osadl.org (updated Mon May 27, 2024 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2483699340,0cyclictest0-21swapper/011:26:330
2483699330,0cyclictest0-21swapper/007:44:440
24848993230,1cyclictest74-1kworker/2:1H07:44:442
24853993131,0cyclictest10154-21lspci07:44:453
24840992920,6cyclictest0-21swapper/112:17:041
2484099270,1cyclictest0-21swapper/112:26:011
24840992623,3cyclictest0-21swapper/109:41:521
24840992619,6cyclictest26862-21idleruntime-cro09:50:001
2484099260,0cyclictest0-21swapper/109:19:481
2484099250,0cyclictest0-21swapper/110:43:591
2484099250,0cyclictest0-21swapper/109:24:281
2483699250,24cyclictest20455-21diskmemload09:24:400
2485399240,24cyclictest20455-21diskmemload12:36:343
2485399240,23cyclictest20455-21diskmemload09:47:233
24848992421,2cyclictest597-21dbus-daemon10:35:002
2484899240,24cyclictest20455-21diskmemload09:58:482
2484899240,24cyclictest20455-21diskmemload09:42:572
2484899240,23cyclictest0-21swapper/210:50:472
2484899240,1cyclictest20455-21diskmemload11:10:252
2484899240,1cyclictest12219-21cron11:20:002
2484899240,0cyclictest0-21swapper/210:29:272
24840992420,4cyclictest0-21swapper/107:45:581
2484099240,23cyclictest0-21swapper/110:37:371
2484099240,23cyclictest0-21swapper/109:28:141
2484099240,0cyclictest20455-21diskmemload11:26:251
2484099240,0cyclictest0-21swapper/110:26:061
2484099240,0cyclictest0-21swapper/109:32:131
24836992420,3cyclictest0-21swapper/012:11:000
2483699240,24cyclictest0-21swapper/011:52:430
2483699240,24cyclictest0-21swapper/010:59:420
2483699240,23cyclictest20455-21diskmemload10:50:470
2483699240,23cyclictest20455-21diskmemload10:29:290
2483699240,23cyclictest0-21swapper/010:45:350
2483699240,1cyclictest0-21swapper/009:25:110
24853992323,0cyclictest0-21swapper/311:02:573
24853992323,0cyclictest0-21swapper/310:36:473
24853992323,0cyclictest0-21swapper/310:13:593
24853992321,1cyclictest6170-21sh09:27:303
24853992321,1cyclictest15241-21cron09:00:003
24853992320,2cyclictest21187-21rm10:54:163
2485399230,23cyclictest20455-21diskmemload11:49:263
2485399230,23cyclictest20455-21diskmemload11:13:123
2485399230,23cyclictest0-21swapper/312:29:173
2485399230,23cyclictest0-21swapper/312:17:583
2485399230,23cyclictest0-21swapper/311:20:113
2485399230,22cyclictest27684-21ssh09:16:133
2485399230,22cyclictest16418-21rm09:38:313
2485399230,22cyclictest1118-21ssh09:22:103
2485399230,22cyclictest0-21swapper/310:28:513
2485399230,1cyclictest4782-21ssh10:00:453
2485399230,1cyclictest17913-21diskmemload09:40:413
2485399230,0cyclictest20455-21diskmemload11:29:123
2485399230,0cyclictest0-21swapper/310:56:293
2485399230,0cyclictest0-21swapper/310:08:563
2485399230,0cyclictest0-21swapper/309:51:393
24848992323,0cyclictest0-21swapper/211:37:052
24848992323,0cyclictest0-21swapper/210:07:482
24848992323,0cyclictest0-21swapper/209:14:322
24848992321,1cyclictest0-21swapper/208:39:592
24848992320,2cyclictest1152-21ssh09:22:122
2484899230,2cyclictest30883-21perf11:05:012
2484899230,23cyclictest0-21swapper/211:43:472
2484899230,23cyclictest0-21swapper/209:52:052
2484899230,22cyclictest2783-21wc08:35:002
2484899230,22cyclictest26978-21if_enp1s009:16:042
2484899230,22cyclictest12848-21ssh09:35:182
2484899230,20cyclictest0-21swapper/210:56:182
2484899230,0cyclictest0-21swapper/211:56:002
2484899230,0cyclictest0-21swapper/209:30:082
24840992323,0cyclictest0-21swapper/112:23:581
24840992323,0cyclictest0-21swapper/112:10:471
24840992323,0cyclictest0-21swapper/111:35:041
24840992323,0cyclictest0-21swapper/111:18:321
24840992323,0cyclictest0-21swapper/109:55:301
24840992323,0cyclictest0-21swapper/109:54:191
24840992321,2cyclictest0-21swapper/111:50:321
24840992321,2cyclictest0-21swapper/111:32:441
24840992321,1cyclictest13700-21diskstats09:36:001
24840992321,1cyclictest10404-21awk07:45:001
24840992321,1cyclictest0-21swapper/110:49:121
24840992321,1cyclictest0-21swapper/110:16:031
24840992320,2cyclictest0-21swapper/112:07:441
24840992320,2cyclictest0-21swapper/110:52:131
24840992318,4cyclictest0-21swapper/108:50:581
2484099230,2cyclictest20662-21ptp4l12:36:131
2484099230,23cyclictest0-21swapper/111:58:091
2484099230,23cyclictest0-21swapper/109:10:181
2484099230,22cyclictest3120-21apt-get08:36:001
2484099230,22cyclictest16894-21awk11:25:001
2484099230,0cyclictest0-21swapper/111:40:431
2484099230,0cyclictest0-21swapper/111:08:071
2484099230,0cyclictest0-21swapper/110:20:431
2484099230,0cyclictest0-21swapper/110:12:421
2484099230,0cyclictest0-21swapper/108:25:021
24836992323,0cyclictest20455-21diskmemload10:32:490
24836992323,0cyclictest0-21swapper/012:19:000
24836992323,0cyclictest0-21swapper/011:58:520
24836992323,0cyclictest0-21swapper/011:32:100
24836992323,0cyclictest0-21swapper/009:52:290
24836992323,0cyclictest0-21swapper/009:34:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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