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2026-03-10 - 10:46

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 Mar 10, 2026 00:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3184299584,38cyclictest31601-21ssh23:05:121
31859995427,20cyclictest28366irq/58-eth023:20:133
3185199544,32cyclictest22552-21ssh23:00:132
31842995412,31cyclictest21-21ksoftirqd/120:45:131
31842995130,9cyclictest21-21ksoftirqd/119:10:131
3184299481,38cyclictest29347-21ssh22:10:131
3184299473,32cyclictest17248-21ssh23:15:121
31851994626,15cyclictest0-21swapper/223:55:132
3183199456,7cyclictest131rcu_preempt21:30:120
3185999433,24cyclictest28366irq/58-eth023:00:143
3185999432,24cyclictest28366irq/58-eth000:20:123
3183199435,35cyclictest5972-21ssh22:15:130
3184299420,30cyclictest20322-21ssh22:05:131
3185999413,9cyclictest28366irq/58-eth023:25:123
3185999413,20cyclictest28366irq/58-eth021:10:143
3183199406,29cyclictest15020-21ssh22:20:120
3184299390,25cyclictest7450-21ssh21:40:131
3185999383,24cyclictest28366irq/58-eth022:20:123
3185999383,18cyclictest28366irq/58-eth021:40:133
3185999381,19cyclictest28366irq/58-eth019:30:113
3185199381,25cyclictest24077-21ssh22:25:132
3183199381,28cyclictest17231-21rm23:15:110
3185999374,23cyclictest28366irq/58-eth021:20:123
3185999374,23cyclictest28366irq/58-eth021:20:113
3185999372,12cyclictest0-21swapper/323:15:123
3185199372,28cyclictest5154-21grep21:20:192
3185199372,28cyclictest5154-21grep21:20:182
31842993714,7cyclictest21-21ksoftirqd/123:00:151
31831993718,12cyclictest131rcu_preempt21:20:120
31831993718,12cyclictest131rcu_preempt21:20:110
3185999365,19cyclictest28366irq/58-eth023:55:133
3185999365,15cyclictest28366irq/58-eth022:00:123
3185999363,20cyclictest28366irq/58-eth022:25:133
31859993621,10cyclictest28366irq/58-eth023:45:143
3184299366,19cyclictest4437-21ssh22:50:121
3184299365,21cyclictest21-21ksoftirqd/120:40:131
3184299362,19cyclictest11160-21ssh22:00:141
3184299361,26cyclictest28515-21ssh00:15:131
3183199353,20cyclictest32214-21ssh00:35:130
3185999342,17cyclictest28366irq/58-eth020:30:133
3184299344,23cyclictest26452-21ssh23:20:131
3184299341,3cyclictest131rcu_preempt23:10:131
3183199343,28cyclictest30805-21ssh21:35:140
3183199342,28cyclictest20316-21ssh22:05:140
3183199342,26cyclictest0-21swapper/021:55:130
3185999332,18cyclictest28366irq/58-eth019:10:123
3185999323,15cyclictest28366irq/58-eth021:25:113
3185999322,20cyclictest28366irq/58-eth022:35:123
3185199322,22cyclictest14096-21df_inode19:25:142
3183199326,22cyclictest15919-21ssh23:50:130
3183199323,26cyclictest30255-21ssh23:40:130
3185999313,16cyclictest28366irq/58-eth020:25:143
31851993110,3cyclictest131rcu_preempt19:20:132
3185199301,17cyclictest23270-21ssh00:30:142
3183199304,23cyclictest1502-21ssh00:00:130
3185999292,11cyclictest28366irq/58-eth019:45:133
3185199293,11cyclictest0-21swapper/222:39:182
3185199292,17cyclictest6924-21ssh23:45:132
3184299291,22cyclictest24865-21ssh23:55:141
3183199297,10cyclictest633-21Async12:11:530
3183199291,10cyclictest12-21ksoftirqd/020:30:140
3185999288,7cyclictest28366irq/58-eth000:15:143
3185999283,10cyclictest0-21swapper/322:09:203
3185999282,9cyclictest0-21swapper/322:55:133
3185999282,9cyclictest0-21swapper/322:55:133
31859992812,10cyclictest28366irq/58-eth023:05:143
3185199284,17cyclictest22346irq/40-dwc2_hso19:50:142
3185199282,22cyclictest27-21ksoftirqd/200:25:122
3184299282,20cyclictest5132-21ssh00:00:241
3184299282,20cyclictest18015-21ssh21:10:141
3184299281,3cyclictest131rcu_preempt19:50:141
3183199283,18cyclictest21151-21ssh23:35:110
3183199282,21cyclictest9725-21ssh22:35:120
3183199282,18cyclictest18936-21sh19:30:150
3185999273,16cyclictest0-21swapper/322:44:193
3185999272,10cyclictest0-21swapper/321:39:183
3185199277,13cyclictest27-21ksoftirqd/221:45:152
31851992710,12cyclictest27-21ksoftirqd/222:45:142
3184299271,19cyclictest201rcuc/122:45:151
3184299270,22cyclictest8661-21sh21:57:321
3183199276,12cyclictest12-21ksoftirqd/021:05:130
3183199273,8cyclictest12-21ksoftirqd/000:30:130
3183199272,19cyclictest12754-21ssh21:25:130
3183199271,16cyclictest12-21ksoftirqd/021:00:100
3185999263,16cyclictest0-21swapper/322:12:323
3185999262,10cyclictest0-21swapper/323:54:193
3185999262,10cyclictest0-21swapper/323:33:193
31859992617,6cyclictest28366irq/58-eth023:35:123
31859992612,4cyclictest0-21swapper/319:55:143
3185999261,16cyclictest28366irq/58-eth021:50:133
3185199262,20cyclictest26434-21sh23:20:122
3185199262,19cyclictest12553-21ssh22:17:342
31851992613,10cyclictest14397-21ssh23:12:062
3184299262,8cyclictest131rcu_preempt21:23:191
3184299262,8cyclictest131rcu_preempt21:23:181
3184299261,3cyclictest131rcu_preempt22:20:141
31831992619,4cyclictest28864-21sh00:15:170
31831992616,7cyclictest0-21swapper/021:15:150
3185999252,13cyclictest0-21swapper/322:15:143
3185199253,16cyclictest29356-21ssh22:10:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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