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2026-06-18 - 19:59

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 Thu Jun 18, 2026 12:45:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
513899686,52cyclictest15316-21ssh11:10:121
513299667,14cyclictest12-21ksoftirqd/008:25:120
513299667,14cyclictest12-21ksoftirqd/008:25:120
513899654,47cyclictest31455-21ssh09:50:131
514899624,33cyclictest7950-21ssh12:35:102
514899624,33cyclictest7950-21ssh12:35:102
5161995935,15cyclictest35966irq/58-eth009:35:133
513899599,6cyclictest131rcu_preempt07:45:101
516199525,27cyclictest35966irq/58-eth009:40:123
513299511,40cyclictest7967-21ssh12:35:110
513299511,40cyclictest7967-21ssh12:35:110
513299502,42cyclictest4068-21ssh12:15:130
513899483,25cyclictest30528-21ssh10:25:151
513899482,40cyclictest25499-21ssh10:40:141
513299483,32cyclictest31290-21ssh12:30:120
516199455,25cyclictest35966irq/58-eth011:55:113
5161994536,5cyclictest35966irq/58-eth012:35:103
5161994536,5cyclictest35966irq/58-eth012:35:093
513899452,34cyclictest4255-21ssh09:35:121
513899443,34cyclictest18228-21ssh12:05:131
5161994325,11cyclictest35966irq/58-eth010:30:133
5161994325,11cyclictest35966irq/58-eth010:30:123
5148994316,19cyclictest0-21swapper/209:25:122
5161994110,19cyclictest35966irq/58-eth012:10:133
516199403,25cyclictest35966irq/58-eth010:40:143
513899404,29cyclictest20421-21ssh10:55:141
5138994024,9cyclictest0-21swapper/110:20:121
516199394,22cyclictest35966irq/58-eth009:05:113
513299392,28cyclictest28527-21ssh11:35:140
5161993817,10cyclictest35966irq/58-eth011:40:143
513299383,25cyclictest3074-21ssh10:10:110
513299382,30cyclictest10333-21ssh11:25:130
514899372,18cyclictest2530-21ssh11:01:102
514899357,20cyclictest0-21swapper/212:30:112
513899351,23cyclictest7284-21ssh10:30:131
513899351,23cyclictest7284-21ssh10:30:131
5161993316,12cyclictest35966irq/58-eth011:45:133
514899335,15cyclictest27346irq/40-dwc2_hso07:20:102
514899334,19cyclictest0-21swapper/211:35:142
5148993317,5cyclictest2106-21ssh10:45:142
5161993215,10cyclictest35966irq/58-eth012:30:123
514899328,15cyclictest0-21swapper/207:50:132
514899327,17cyclictest18222-21ssh12:05:142
513899326,15cyclictest27381-21ssh12:10:141
516199316,11cyclictest0-21swapper/311:10:113
516199315,16cyclictest35966irq/58-eth012:00:123
516199314,19cyclictest35966irq/58-eth010:55:133
513299311,22cyclictest18375-21sh09:25:120
514899302,22cyclictest14177-21ssh11:09:092
514899302,21cyclictest28521-21ssh12:27:102
5138993018,4cyclictest131rcu_preempt11:40:121
516199293,16cyclictest35966irq/58-eth011:20:103
514899292,21cyclictest0-21swapper/208:30:122
514899292,20cyclictest0-21swapper/208:00:122
513899292,19cyclictest1143-21ssh11:35:431
5138992920,3cyclictest0-21swapper/109:45:111
513299294,4cyclictest131rcu_preempt12:10:140
513299291,22cyclictest1233-21ssh11:20:110
516199282,20cyclictest35966irq/58-eth009:45:113
514899285,14cyclictest27346irq/40-dwc2_hso08:05:132
514899282,14cyclictest27346irq/40-dwc2_hso08:20:132
514899282,10cyclictest0-21swapper/208:25:132
514899282,10cyclictest0-21swapper/208:25:122
514899281,21cyclictest0-21swapper/211:25:132
514899281,10cyclictest684166ssh10:10:272
5148992810,8cyclictest27-21ksoftirqd/209:45:272
514899280,10cyclictest7160-21ssh10:30:052
514899280,10cyclictest7160-21ssh10:30:042
513899286,11cyclictest22282-21ssh12:25:131
513899282,19cyclictest6228-21ssh11:20:411
516199273,16cyclictest0-21swapper/311:53:103
516199273,16cyclictest0-21swapper/311:53:103
516199273,15cyclictest0-21swapper/311:05:393
513899278,4cyclictest21-21ksoftirqd/109:00:101
513899272,18cyclictest11180-21ssh11:05:391
513899271,17cyclictest17271-21ssh10:00:131
513899271,17cyclictest17271-21ssh10:00:131
5132992714,7cyclictest0-21swapper/010:27:480
5132992712,8cyclictest0-21swapper/010:44:530
5132992711,9cyclictest0-21swapper/010:58:550
516199262,14cyclictest35966irq/58-eth012:25:143
514899265,14cyclictest27346irq/40-dwc2_hso11:15:112
514899262,9cyclictest9124-21ssh12:00:112
514899262,15cyclictest27-21ksoftirqd/211:55:182
514899261,17cyclictest14272-21rm11:45:122
5148992610,5cyclictest0-21swapper/212:15:152
513899267,13cyclictest21-21ksoftirqd/110:50:121
513899263,4cyclictest131rcu_preempt10:35:111
513299263,17cyclictest29503-21ssh11:00:130
5132992612,7cyclictest12-21ksoftirqd/011:40:110
516199252,18cyclictest35966irq/58-eth010:35:113
516199252,11cyclictest35966irq/58-eth010:15:113
514899258,7cyclictest27-21ksoftirqd/210:44:522
514899258,11cyclictest27-21ksoftirqd/210:01:142
514899258,11cyclictest27-21ksoftirqd/210:01:142
514899257,11cyclictest27-21ksoftirqd/211:31:532
514899255,7cyclictest27-21ksoftirqd/207:30:172
514899255,7cyclictest27-21ksoftirqd/207:30:162
514899254,14cyclictest27346irq/40-dwc2_hso09:30:132
513899252,17cyclictest30493-21ssh11:53:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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