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2026-06-29 - 21:17

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, 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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6s.osadl.org (updated Mon Jun 29, 2026 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
199022123112,6sleep20-21swapper/207:07:232
20029211392,16sleep00-21swapper/007:09:010
19865211288,18sleep10-21swapper/107:06:531
20089210586,14sleep30-21swapper/307:09:483
55742820,1sleep23829-21diskmemload10:55:182
312412800,0sleep10-21swapper/112:34:391
244842770,0sleep00-21swapper/011:15:410
162032720,0sleep10-21swapper/111:06:361
101802690,0sleep00-21swapper/011:35:160
186622680,0sleep00-21swapper/011:45:110
173992580,1sleep30-21swapper/312:18:583
2013799280,2cyclictest0-21swapper/209:40:082
299732260,1sleep20-21swapper/212:32:232
299982240,0sleep00-21swapper/007:34:560
2013699231,20cyclictest0-21swapper/110:30:111
312382210,0sleep30-21swapper/310:14:033
2013699210,19cyclictest0-21swapper/110:05:121
20135992118,2cyclictest0-21swapper/010:25:120
20138992017,2cyclictest26400-21kworker/u8:207:52:043
20138992017,2cyclictest24493-21kworker/u8:109:26:063
2013899200,18cyclictest0-21swapper/307:30:173
2013899200,14cyclictest0-21swapper/311:00:053
2013799200,18cyclictest0-21swapper/209:05:122
89942190,0sleep30-21swapper/311:00:003
20138991916,2cyclictest21226-21kworker/u8:209:45:053
20138991916,2cyclictest10370-21kworker/u8:110:03:053
20137991914,3cyclictest13595-21ssh09:55:102
2013799191,2cyclictest0-21swapper/211:20:112
20138991815,2cyclictest7746-21kworker/u8:111:13:053
20138991815,2cyclictest30173-21kworker/u8:211:27:053
20138991815,2cyclictest24072-21kworker/u8:007:25:043
20138991815,2cyclictest18382-21kworker/u8:008:48:053
2013899180,2cyclictest0-21swapper/309:10:053
2013699180,16cyclictest0-21swapper/111:10:111
171272180,0sleep00-21swapper/011:42:550
129892180,1sleep012993-21latency08:10:180
115282180,0sleep10-21swapper/111:36:181
20138991714,2cyclictest9316-21kworker/u8:012:14:053
20138991714,2cyclictest4773-21kworker/u8:111:39:053
20138991714,2cyclictest29926-21kworker/u8:007:47:053
20138991714,2cyclictest27094-21kworker/u8:210:43:043
20138991714,2cyclictest25206-21kworker/u8:011:20:013
20138991714,2cyclictest1749-21kworker/u8:110:24:063
20138991714,2cyclictest13318-21kworker/u8:211:55:043
20138991714,2cyclictest13318-21kworker/u8:211:49:043
20138991714,2cyclictest12043-21kworker/u8:108:15:043
20138991712,3cyclictest0-21swapper/309:00:003
20137991714,2cyclictest27094-21kworker/u8:210:20:042
20137991714,2cyclictest16684-21kworker/u8:211:16:052
20138991613,2cyclictest27520-21kworker/u8:109:41:043
20138991613,2cyclictest27094-21kworker/u8:210:32:043
20138991613,2cyclictest25206-21kworker/u8:011:41:053
20138991613,2cyclictest24072-21kworker/u8:007:24:053
20138991613,2cyclictest23209-21kworker/u8:010:49:053
20138991613,2cyclictest21226-21kworker/u8:209:53:043
20138991613,2cyclictest16629-21kworker/u8:010:16:043
20138991613,2cyclictest14928-21kworker/u8:212:37:043
20138991613,2cyclictest12043-21kworker/u8:108:24:053
20138991613,2cyclictest10370-21kworker/u8:110:05:043
20138991613,2cyclictest10370-21kworker/u8:109:55:053
20138991611,3cyclictest9862-21gdbus08:04:503
20137991613,2cyclictest27094-21kworker/u8:210:41:052
20137991613,2cyclictest27094-21kworker/u8:210:30:012
20137991613,2cyclictest14928-21kworker/u8:212:19:052
20137991612,2cyclictest23209-21kworker/u8:010:53:052
20136991612,2cyclictest25330-21sh10:41:411
2013599160,5cyclictest0-21swapper/010:10:010
2013599160,14cyclictest0-21swapper/012:25:100
20138991512,2cyclictest7873-21kworker/u8:209:18:043
20138991512,2cyclictest7746-21kworker/u8:111:09:043
20138991512,2cyclictest26400-21kworker/u8:207:36:053
20138991512,2cyclictest25206-21kworker/u8:011:34:043
20138991512,2cyclictest24493-21kworker/u8:109:05:043
20138991512,2cyclictest18382-21kworker/u8:008:27:043
20138991512,2cyclictest15925-21kworker/u8:207:18:053
20138991512,2cyclictest14928-21kworker/u8:212:20:043
20138991512,2cyclictest12043-21kworker/u8:108:32:053
20138991510,3cyclictest24575-21awk08:40:093
2013899150,3cyclictest0-21swapper/308:40:003
2013899150,2cyclictest0-21swapper/309:20:053
2013899150,13cyclictest10670-21ssh10:26:013
2013899150,13cyclictest10250-21munin-node08:05:113
20137991512,2cyclictest26400-21kworker/u8:208:06:052
20137991512,2cyclictest13318-21kworker/u8:212:03:042
20137991512,2cyclictest10370-21kworker/u8:110:07:042
20136991510,3cyclictest32480-21aten2.4-expect09:00:101
2013699150,14cyclictest0-21swapper/109:25:161
2013699150,13cyclictest0-21swapper/107:10:181
2013599151,12cyclictest9432-21munin-node0
28942140,2sleep20-21swapper/211:27:392
20138991411,2cyclictest25720-21kworker/u8:012:30:053
20138991411,2cyclictest24493-21kworker/u8:108:53:043
20138991411,2cyclictest23209-21kworker/u8:010:52:023
20138991411,2cyclictest21226-21kworker/u8:209:37:053
20138991411,2cyclictest21226-21kworker/u8:209:34:043
20138991411,2cyclictest16127-21kworker/u8:110:36:053
20138991411,2cyclictest12043-21kworker/u8:108:10:023
2013799149,3cyclictest5794-21awk11:30:192
20137991411,2cyclictest27094-21kworker/u8:210:10:052
20137991411,2cyclictest24493-21kworker/u8:109:16:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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