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2025-12-07 - 04:12

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 Sun Dec 07, 2025 00:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2600199551,42cyclictest16271-21ssh00:15:150
26025995122,16cyclictest29566irq/58-eth023:05:133
2600199515,6cyclictest131rcu_preempt22:30:130
2600999483,35cyclictest24374-21ssh00:20:151
2600999481,38cyclictest28883-21ssh21:20:141
2602599474,26cyclictest29566irq/58-eth021:40:143
2600199471,40cyclictest20645-21ssh21:15:140
2600199464,8cyclictest131rcu_preempt00:35:130
2600199455,9cyclictest131rcu_preempt21:25:130
2600999432,32cyclictest3063-21ssh22:05:141
2600199433,32cyclictest32560-21ssh00:05:140
2602599423,25cyclictest29566irq/58-eth022:10:163
2600199422,29cyclictest26732-21ssh22:20:150
26009994127,3cyclictest21-21ksoftirqd/100:25:151
2600999391,31cyclictest8201-21ssh23:50:131
2600999391,31cyclictest8201-21ssh23:50:131
2600999391,30cyclictest2176-21ssh22:25:151
2600999391,30cyclictest2176-21ssh22:25:151
2600199391,6cyclictest131rcu_preempt20:50:170
2601799383,14cyclictest31890-21ssh00:25:162
2602599372,22cyclictest29566irq/58-eth000:05:143
26009993711,18cyclictest21-21ksoftirqd/123:45:131
2602599361,23cyclictest29566irq/58-eth019:30:143
2601799362,14cyclictest9426-21ssh22:50:132
26017993516,12cyclictest0-21swapper/222:20:152
2600999352,24cyclictest9057-21ssh23:10:141
2600999351,27cyclictest8574-21ssh23:30:131
2601799341,21cyclictest0-21swapper/220:10:162
2600999344,23cyclictest12473-21ssh21:30:141
2600199343,8cyclictest131rcu_preempt19:30:140
26025993317,12cyclictest29566irq/58-eth021:30:163
26017993313,3cyclictest131rcu_preempt20:00:152
2600199332,24cyclictest932-21snmpd20:00:160
26001993318,11cyclictest12-21ksoftirqd/019:15:120
26001993315,11cyclictest131rcu_preempt21:50:150
2601799321,23cyclictest564-21ssh23:25:132
2600199324,19cyclictest20523-21ssh21:35:130
2600199322,9cyclictest131rcu_preempt20:35:130
2601799316,17cyclictest26346irq/40-dwc2_hso19:15:132
2601799315,14cyclictest26346irq/40-dwc2_hso00:10:152
26017993122,5cyclictest24504-21sh00:00:152
26001993116,10cyclictest30040-1kworker/u9:223:50:140
26001993116,10cyclictest30040-1kworker/u9:223:50:140
2602599303,18cyclictest29566irq/58-eth023:55:133
26017993012,12cyclictest629-21Async14:00:482
2602599294,13cyclictest29566irq/58-eth023:20:143
2601799293,15cyclictest26346irq/40-dwc2_hso19:45:142
2601799292,19cyclictest26346irq/40-dwc2_hso22:45:142
2601799292,11cyclictest17875-21ssh22:35:112
2600999292,22cyclictest3918-21ssh21:45:151
26025992814,9cyclictest29566irq/58-eth021:55:123
2601799285,15cyclictest26346irq/40-dwc2_hso20:30:152
2601799284,13cyclictest26346irq/40-dwc2_hso19:20:132
2601799282,19cyclictest0-21swapper/221:00:152
2600199281,16cyclictest25541-21ssh23:00:130
2602599273,16cyclictest29566irq/58-eth023:25:113
26025992715,9cyclictest29566irq/58-eth023:00:143
2601799276,12cyclictest26346irq/40-dwc2_hso20:20:132
2601799276,12cyclictest13280-21kthreadcore22:10:242
2601799274,14cyclictest26346irq/40-dwc2_hso19:30:152
2601799272,12cyclictest12507-21ssh21:10:172
2600999279,12cyclictest21-21ksoftirqd/120:00:141
2600999273,17cyclictest24488-21ssh00:00:131
2600199271,21cyclictest27633-21ssh22:00:170
2601799264,17cyclictest26346irq/40-dwc2_hso20:55:142
2601799262,9cyclictest0-21swapper/219:50:152
2601799262,9cyclictest0-21swapper/219:50:152
26017992613,10cyclictest0-21swapper/221:20:272
2600199269,11cyclictest8537-21ssh23:09:500
2600199268,14cyclictest12-21ksoftirqd/021:20:150
26001992611,7cyclictest12-21ksoftirqd/021:30:160
2602599252,20cyclictest29566irq/58-eth021:35:133
26025992510,8cyclictest29566irq/58-eth022:25:173
26025992510,8cyclictest29566irq/58-eth022:25:163
26025992510,7cyclictest29566irq/58-eth023:50:153
26025992510,7cyclictest29566irq/58-eth023:50:143
2601799258,7cyclictest0-21swapper/222:05:142
2601799256,15cyclictest26346irq/40-dwc2_hso23:35:152
26017992514,8cyclictest0-21swapper/223:20:162
2600999253,17cyclictest18876-21ssh22:15:161
2600199253,14cyclictest8979-21kthreadcore19:25:210
2600199253,14cyclictest8979-21kthreadcore19:25:200
2600199252,15cyclictest12-21ksoftirqd/022:50:120
2600199251,7cyclictest131rcu_preempt20:25:130
2601799245,8cyclictest27-21ksoftirqd/223:52:242
2601799245,8cyclictest27-21ksoftirqd/223:52:232
2601799243,7cyclictest27-21ksoftirqd/223:15:162
2601799243,6cyclictest27-21ksoftirqd/221:25:192
26017992414,4cyclictest0-21swapper/219:55:232
2601799241,17cyclictest26346irq/40-dwc2_hso23:40:122
2601799240,9cyclictest26038-21ls22:40:192
2600999243,14cyclictest27613-21ssh22:00:151
2600999242,17cyclictest842-21munin-node19:50:151
2600999242,17cyclictest842-21munin-node19:50:151
2600999241,20cyclictest0-21swapper/100:30:141
2600199244,13cyclictest25057-21ssh23:20:140
2600199243,6cyclictest53046usb-storage20:05:040
2600199242,17cyclictest565-21ssh23:25:120
26001992414,7cyclictest22763-21cron23:17:010
26001992412,4cyclictest131rcu_preempt23:40:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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