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2026-07-17 - 19:00

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #4

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 rack7slot4s.osadl.org (updated Fri Jul 17, 2026 12:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5464995525,11cyclictest27-21ksoftirqd/209:10:142
544699553,41cyclictest3941-21ssh12:15:140
544699501,41cyclictest31127-21ssh12:30:120
544699471,36cyclictest7647-21ssh10:30:120
5464994615,21cyclictest27-21ksoftirqd/208:35:132
547299448,20cyclictest35966irq/58-eth011:25:133
5464994230,8cyclictest27-21ksoftirqd/211:10:142
547299402,18cyclictest35966irq/58-eth012:35:143
547299402,18cyclictest35966irq/58-eth012:35:143
5464994015,16cyclictest0-21swapper/207:35:132
5464994011,14cyclictest27-21ksoftirqd/212:25:122
5472993912,19cyclictest321rcuc/308:25:143
546499392,18cyclictest27113-21ssh12:10:012
547299383,24cyclictest35966irq/58-eth007:55:143
547299381,25cyclictest35966irq/58-eth009:50:123
546499383,21cyclictest12817-21ssh10:15:162
545699383,22cyclictest23039-21ssh09:45:141
546499377,22cyclictest27-21ksoftirqd/209:35:132
546499372,28cyclictest3707-21ssh10:10:142
5464993715,15cyclictest27-21ksoftirqd/211:25:122
5464993710,23cyclictest0-21swapper/209:40:142
547299363,20cyclictest35966irq/58-eth009:55:143
547299362,19cyclictest35966irq/58-eth009:30:123
5472993614,16cyclictest321rcuc/311:10:143
546499362,27cyclictest31016-21rm12:30:042
544699362,20cyclictest12-21ksoftirqd/012:10:140
547299353,21cyclictest0-21swapper/310:50:143
547299352,20cyclictest35966irq/58-eth012:15:133
545699354,17cyclictest24538-21ssh11:15:121
544699351,27cyclictest16752-21sh10:35:130
544699351,20cyclictest27043-21ssh10:05:150
546499342,27cyclictest23623-21cat11:30:312
545699342,29cyclictest23249-21ssh11:50:131
547299335,12cyclictest35966irq/58-eth010:15:153
547299333,17cyclictest35966irq/58-eth011:05:143
5464993312,15cyclictest5433-21cyclictest08:40:132
544699330,25cyclictest27980-21ssh09:30:130
5456993223,5cyclictest0-21swapper/109:55:141
547299302,17cyclictest35966irq/58-eth010:10:143
546499304,15cyclictest779-21ssh09:15:142
545699304,20cyclictest9888-21ssh09:20:141
545699302,22cyclictest24760-21rm12:07:321
5456993010,10cyclictest21-21ksoftirqd/110:35:131
547299298,11cyclictest0-21swapper/308:45:133
546499292,10cyclictest29197-21usage_EthcTask11:15:302
547299283,16cyclictest0-21swapper/309:38:323
546499282,21cyclictest28072-21ssh11:50:312
546499282,16cyclictest27346irq/40-dwc2_hso08:55:142
546499282,10cyclictest26456-21ssh12:09:302
545699282,21cyclictest12195-21sh09:38:321
544699282,19cyclictest18647-21cat09:40:310
5446992815,4cyclictest12-21ksoftirqd/007:30:130
547299273,16cyclictest0-21swapper/311:15:313
547299273,15cyclictest0-21swapper/312:30:053
547299273,15cyclictest0-21swapper/309:40:313
5472992713,8cyclictest35966irq/58-eth010:25:153
547299271,13cyclictest35966irq/58-eth009:10:123
546499273,18cyclictest27346irq/40-dwc2_hso07:25:132
546499273,18cyclictest27346irq/40-dwc2_hso07:25:122
546499273,16cyclictest27346irq/40-dwc2_hso07:15:132
546499272,20cyclictest0-21swapper/207:30:142
545699272,19cyclictest20721-21ssh11:47:321
544699272,19cyclictest21269-21ssh12:24:320
5472992613,8cyclictest321rcuc/307:40:133
546499269,13cyclictest3939-21/usr/sbin/munin11:55:292
546499265,7cyclictest131rcu_preempt08:00:142
546499261,9cyclictest32107-21ssh09:50:132
545699264,16cyclictest1916-21kworker/u8:110:50:151
544699261,19cyclictest669-21ssh11:19:560
544699261,19cyclictest6034-21users11:20:310
544699261,16cyclictest23675-21diskmemload11:30:140
5472992510,9cyclictest35966irq/58-eth012:00:123
546499255,12cyclictest27346irq/40-dwc2_hso08:20:122
546499252,18cyclictest9629-21ssh12:16:312
546499251,18cyclictest7695-21ssh12:35:062
546499251,18cyclictest7695-21ssh12:35:062
546499250,18cyclictest10349-21ls07:45:282
545699254,15cyclictest13035-21ssh12:20:121
545699253,18cyclictest29783-21ssh11:00:141
5456992513,8cyclictest0-21swapper/107:20:141
544699256,11cyclictest12-21ksoftirqd/008:55:140
544699252,17cyclictest25860-21ssh10:40:130
544699252,17cyclictest25860-21ssh10:40:120
544699251,17cyclictest8562-21apt-get12:00:040
547299249,11cyclictest0-21swapper/310:05:313
547299247,11cyclictest0-21swapper/311:24:313
547299243,15cyclictest0-21swapper/311:45:133
547299243,11cyclictest0-21swapper/311:40:153
547299242,15cyclictest35966irq/58-eth012:05:143
546499245,13cyclictest0-21swapper/209:00:122
546499245,13cyclictest0-21swapper/209:00:122
546499242,18cyclictest9764-21ssh11:24:562
546499242,17cyclictest0-21swapper/209:47:312
546499242,15cyclictest27-21ksoftirqd/208:25:132
546499242,13cyclictest27047-21ssh10:05:152
546499240,21cyclictest15156-21find07:20:132
545699242,17cyclictest13915-21ssh09:40:141
5456992411,7cyclictest0-21swapper/109:30:311
544699243,18cyclictest0-21swapper/011:25:120
544699241,13cyclictest2448-21ssh10:45:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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