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2026-05-23 - 19:38

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 Sat May 23, 2026 12:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
456899629,13cyclictest12-21ksoftirqd/011:55:130
4588995822,23cyclictest35966irq/58-eth010:35:133
458899495,26cyclictest35966irq/58-eth009:45:143
458099482,26cyclictest24514-21ssh11:15:132
458899473,26cyclictest35966irq/58-eth008:55:133
457299471,34cyclictest11496-21ssh10:50:121
456899467,12cyclictest12-21ksoftirqd/012:25:130
456899455,9cyclictest12-21ksoftirqd/012:05:130
458099431,31cyclictest27-21ksoftirqd/210:30:152
458899425,23cyclictest35966irq/58-eth011:30:133
458899422,25cyclictest35966irq/58-eth010:15:143
457299422,34cyclictest13309-21ssh09:40:121
458099392,31cyclictest4004-21ssh11:39:062
458099392,13cyclictest27-21ksoftirqd/211:55:132
4580993912,15cyclictest131rcu_preempt10:10:132
457299399,18cyclictest21-21ksoftirqd/110:05:141
458099382,31cyclictest15029-21sh12:38:062
458099382,31cyclictest15029-21sh12:38:062
458899375,19cyclictest35966irq/58-eth010:20:143
458899361,22cyclictest35966irq/58-eth012:10:123
458099362,27cyclictest19968-21ssh11:46:232
456899362,24cyclictest20656-21ssh10:55:130
456899362,23cyclictest23309-21ssh09:10:130
458899350,21cyclictest35966irq/58-eth009:30:123
457299355,19cyclictest21-21ksoftirqd/107:30:121
458899342,18cyclictest35966irq/58-eth011:05:123
458099347,16cyclictest4559-21cyclictest11:10:132
457299340,31cyclictest9273-21ssh12:00:131
458899332,19cyclictest35966irq/58-eth009:40:123
4580993320,8cyclictest261rcuc/211:31:132
4580993310,16cyclictest131rcu_preempt12:25:132
456899331,25cyclictest23491-21ssh11:50:130
458899321,23cyclictest35966irq/58-eth011:00:123
458899321,23cyclictest35966irq/58-eth011:00:123
458899321,16cyclictest35966irq/58-eth008:10:133
458099322,21cyclictest27346irq/40-dwc2_hso09:25:142
458099322,18cyclictest27346irq/40-dwc2_hso11:25:132
457299321,27cyclictest25570-21sh10:40:121
457299321,19cyclictest16484-21ssh10:35:121
458899311,21cyclictest0-21swapper/311:10:133
458099314,16cyclictest27346irq/40-dwc2_hso09:40:122
456899312,18cyclictest151rcuc/011:35:130
458099303,21cyclictest0-21swapper/212:15:062
458099301,21cyclictest131rcu_preempt08:40:142
458099301,21cyclictest131rcu_preempt08:40:142
457299305,22cyclictest22511-21ssh09:45:141
457299301,23cyclictest32441-21ssh09:15:141
456899308,7cyclictest131rcu_preempt09:20:130
458099293,18cyclictest31599-21rm09:50:142
458099293,18cyclictest27346irq/40-dwc2_hso07:20:142
458099292,7cyclictest131rcu_preempt08:10:132
457299292,23cyclictest21-21ksoftirqd/108:20:131
457299292,22cyclictest27350-21ssh12:10:121
4568992922,3cyclictest0-21swapper/011:10:130
458899282,15cyclictest35966irq/58-eth012:35:133
458899282,15cyclictest35966irq/58-eth012:35:133
458099283,20cyclictest0-21swapper/212:04:062
458099282,19cyclictest5089-21ssh11:40:072
457299287,11cyclictest21-21ksoftirqd/111:35:131
457299282,18cyclictest14319-21ssh11:45:131
4572992820,6cyclictest21-21ksoftirqd/107:45:141
456899284,20cyclictest13174-21ssh12:20:140
456899283,21cyclictest6495-21ssh11:05:130
456899282,20cyclictest12-21ksoftirqd/008:10:130
456899281,25cyclictest3207-21ssh10:10:140
458099273,16cyclictest27346irq/40-dwc2_hso08:50:132
458099272,18cyclictest0-21swapper/210:50:142
458099272,10cyclictest0-21swapper/207:50:142
458099271,18cyclictest23925-21find07:30:122
457299271,19cyclictest11683-21kworker/1:011:10:331
456899274,19cyclictest17542-21ssh10:00:140
456899273,15cyclictest9251-21ssh12:00:120
456899272,19cyclictest11953-21ssh12:19:060
456899271,18cyclictest25577-21ssh10:40:120
458899263,17cyclictest0-21swapper/312:34:063
458899263,15cyclictest0-21swapper/312:19:063
4588992610,11cyclictest35966irq/58-eth009:25:153
456899265,18cyclictest21489-21ssh10:20:150
456899262,5cyclictest12-21ksoftirqd/010:35:140
458899253,14cyclictest35966irq/58-eth009:50:133
458099257,12cyclictest0-21swapper/209:30:122
458099252,15cyclictest27346irq/40-dwc2_hso08:45:132
457299252,16cyclictest21-21ksoftirqd/109:20:121
4572992513,4cyclictest21-21ksoftirqd/111:05:121
457299251,11cyclictest29523-21kworker/1:011:55:011
456899252,21cyclictest27412-21ssh09:30:130
4568992514,3cyclictest12-21ksoftirqd/007:35:290
4568992513,4cyclictest12-21ksoftirqd/012:39:160
4568992513,4cyclictest12-21ksoftirqd/012:39:160
458899243,14cyclictest0-21swapper/311:39:063
458899243,12cyclictest35966irq/58-eth008:45:133
458099244,15cyclictest27346irq/40-dwc2_hso10:05:132
458099242,16cyclictest27346irq/40-dwc2_hso09:20:132
458099242,15cyclictest0-21swapper/208:20:052
4580992413,9cyclictest4050-21ssh11:02:402
4580992413,9cyclictest4050-21ssh11:02:402
458099241,13cyclictest12369-21ssh10:15:152
457299242,19cyclictest31354-21ssh12:30:141
457299241,17cyclictest22217-21ssh12:25:131
4572992410,8cyclictest30601-21ssh10:25:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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