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2026-07-21 - 22:53

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 Tue Jul 21, 2026 12:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26418996620,12cyclictest27-21ksoftirqd/212:10:152
26409996626,7cyclictest21-21ksoftirqd/112:35:131
2640999603,49cyclictest5682-21ssh10:00:131
26409995440,8cyclictest0-21swapper/112:20:121
2641899524,38cyclictest2203-21ssh11:10:132
26426994833,11cyclictest35966irq/58-eth010:00:143
2639599483,36cyclictest442-21ssh11:45:130
26409994729,5cyclictest21-21ksoftirqd/109:25:141
2642699463,26cyclictest35966irq/58-eth011:35:143
2640999462,36cyclictest21623-21ssh09:15:151
2640999441,35cyclictest4080-21ssh10:35:131
2642699422,26cyclictest35966irq/58-eth007:55:143
2640999421,30cyclictest16684-21ssh12:30:141
2639599426,28cyclictest11273-21ssh11:15:150
2639599411,32cyclictest13043-21ssh10:40:130
2639599411,32cyclictest13043-21ssh10:40:120
26418994014,21cyclictest2423-21kworker/2:110:00:142
2642699392,25cyclictest35966irq/58-eth012:05:143
2640999396,21cyclictest21-21ksoftirqd/110:15:131
2640999391,30cyclictest7635-21ssh10:55:111
2642699383,22cyclictest35966irq/58-eth012:25:123
2642699381,18cyclictest35966irq/58-eth010:55:113
26418993723,8cyclictest29334-21sh11:25:162
2641899371,28cyclictest1891-21ssh09:40:142
2641899371,28cyclictest1891-21ssh09:40:132
26395993610,18cyclictest12-21ksoftirqd/011:05:140
2642699351,27cyclictest35966irq/58-eth011:25:153
2642699343,17cyclictest35966irq/58-eth009:10:143
2642699342,16cyclictest35966irq/58-eth009:30:153
26409993416,6cyclictest21-21ksoftirqd/108:15:131
2639599343,23cyclictest12-21ksoftirqd/012:05:120
2642699332,20cyclictest35966irq/58-eth011:50:143
2642699332,20cyclictest35966irq/58-eth011:50:133
2640999332,26cyclictest27485-21ssh10:30:131
2640999322,21cyclictest23771-21ssh10:10:151
2640999322,21cyclictest23771-21ssh10:10:141
2641899313,20cyclictest18521-21sh11:55:142
2641899312,18cyclictest27346irq/40-dwc2_hso09:20:142
2640999311,16cyclictest27469-21sh12:00:121
26395993118,9cyclictest26576-21apt-get07:10:130
2639599310,22cyclictest21994-21sh10:45:110
26426993018,7cyclictest35966irq/58-eth009:25:133
26426993015,9cyclictest35966irq/58-eth010:30:143
2641899302,23cyclictest7185-21ssh09:25:142
2641899302,20cyclictest19853-21sh09:50:042
2641899301,22cyclictest25676-21ssh12:35:132
2640999302,20cyclictest29336-21sh11:25:151
26395993018,8cyclictest30349-21apt-get08:55:130
26426992915,9cyclictest35966irq/58-eth011:45:143
2642699291,15cyclictest35966irq/58-eth008:25:133
2641899292,23cyclictest12230-21diskmemload12:00:132
2641899291,10cyclictest93066snmpd09:37:482
26395992915,9cyclictest27820-21apt-get07:45:140
26395992915,9cyclictest27820-21apt-get07:45:130
26395992914,11cyclictest25260-21ssh09:35:100
2642699285,14cyclictest0-21swapper/311:20:143
2642699284,16cyclictest0-21swapper/309:40:143
2642699284,16cyclictest0-21swapper/309:40:133
2642699281,13cyclictest35966irq/58-eth011:15:143
2641899282,20cyclictest0-21swapper/212:15:142
2641899281,21cyclictest27501-21diskmemload10:30:142
26409992814,11cyclictest21-21ksoftirqd/109:40:141
26409992814,11cyclictest21-21ksoftirqd/109:40:131
26395992814,9cyclictest31051-21ssh10:50:110
2639599281,22cyclictest10931-21ssh09:45:150
2642699272,15cyclictest0-21swapper/311:05:143
26426992717,8cyclictest0-21swapper/310:35:133
26426992713,10cyclictest35966irq/58-eth011:00:143
2641899272,18cyclictest27346irq/40-dwc2_hso11:40:142
2641899271,20cyclictest21643-21ssh09:15:152
26418992710,12cyclictest27-21ksoftirqd/212:25:132
2639599271,6cyclictest0-21swapper/008:40:150
2639599271,19cyclictest16642-21ssh11:00:140
26395992710,4cyclictest2246766ssh10:25:300
2639599270,19cyclictest12-21ksoftirqd/007:25:140
2642699264,12cyclictest35966irq/58-eth011:10:143
2641899262,16cyclictest27346irq/40-dwc2_hso07:50:112
2641899260,18cyclictest25929-21ls10:45:272
2640999261,19cyclictest18539-21ssh11:55:161
2639599263,5cyclictest12-21ksoftirqd/007:15:160
2639599262,16cyclictest14706-21ssh10:05:140
2639599261,19cyclictest29071-21rm09:55:160
2641899253,13cyclictest27346irq/40-dwc2_hso09:05:112
2640999256,8cyclictest630-21Async09:36:311
2640999256,8cyclictest630-21Async09:36:311
2639599254,5cyclictest12-21ksoftirqd/011:29:510
26395992518,3cyclictest23744-21apt-get10:10:140
26395992518,3cyclictest23744-21apt-get10:10:130
2641899243,17cyclictest27346irq/40-dwc2_hso10:10:142
2641899243,17cyclictest27346irq/40-dwc2_hso10:10:132
2641899242,12cyclictest9610-21ssh11:50:162
2641899242,12cyclictest9610-21ssh11:50:152
2641899241,8cyclictest7654-21ssh10:55:122
2641899241,12cyclictest1792366ssh09:11:032
2639599249,9cyclictest1864-21apt-get09:40:140
2639599249,9cyclictest1864-21apt-get09:40:130
2639599246,6cyclictest12-21ksoftirqd/008:30:310
2639599244,6cyclictest12-21ksoftirqd/012:04:270
2639599244,6cyclictest12-21ksoftirqd/011:35:190
26395992419,2cyclictest13112-21apt-get12:10:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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