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2026-05-09 - 08:16
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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 50 highest latencies:
System rack3slot6.osadl.org (updated Sat May 09, 2026 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1937821710,6sleep019380-21cat19:05:210
20531999770,13cyclictest14-21ksoftirqd/019:40:130
1995829518,30sleep10-21swapper/119:05:501
206232930,5chrt0-21swapper/119:10:141
20531999170,11cyclictest14-21ksoftirqd/021:30:110
20531999061,19cyclictest14-21ksoftirqd/019:35:250
20531999035,48cyclictest27409-21taskset00:00:150
20531998961,18cyclictest14-21ksoftirqd/023:15:120
20531998958,20cyclictest14-21ksoftirqd/020:20:150
20531998855,20cyclictest14-21ksoftirqd/021:10:120
20531998755,25cyclictest14-21ksoftirqd/021:05:240
20531998753,20cyclictest14-21ksoftirqd/019:55:140
20531998656,20cyclictest14-21ksoftirqd/019:20:130
20531998654,18cyclictest14-21ksoftirqd/022:20:120
20531998561,15cyclictest14-21ksoftirqd/021:40:110
20531998558,18cyclictest14-21ksoftirqd/020:05:120
20531998557,15cyclictest14-21ksoftirqd/022:45:140
20531998457,18cyclictest14-21ksoftirqd/023:50:130
20531998454,18cyclictest14-21ksoftirqd/023:40:240
20531998454,18cyclictest14-21ksoftirqd/023:10:120
277742820,7sleep1251rcuc/100:00:231
20531998249,27cyclictest14-21ksoftirqd/023:35:120
20531998249,27cyclictest14-21ksoftirqd/023:35:120
20531998153,16cyclictest14-21ksoftirqd/000:20:140
20531998152,16cyclictest14-21ksoftirqd/023:20:130
20531998049,17cyclictest14-21ksoftirqd/023:05:120
20531997928,45cyclictest3851-21grep21:20:450
20531997928,45cyclictest3851-21grep21:20:450
20531997852,18cyclictest14-21ksoftirqd/020:25:110
20531997849,19cyclictest14-21ksoftirqd/021:45:130
185402780,6sleep10-21swapper/123:35:251
185402780,6sleep10-21swapper/123:35:251
20531997746,19cyclictest0-21swapper/000:30:140
20531997718,51cyclictest0-21swapper/020:30:120
137782770,30sleep1251rcuc/121:50:241
2053199767,54cyclictest11784-21apt-get20:15:130
2053199757,57cyclictest18511-21apt-get22:05:120
20531997544,23cyclictest14-21ksoftirqd/020:40:120
20531997543,20cyclictest14-21ksoftirqd/000:05:130
20531997446,19cyclictest14-21ksoftirqd/023:25:130
20537997327,15cyclictest26-21ksoftirqd/120:20:011
2053199737,53cyclictest7982-21apt-get21:35:120
2053199737,52cyclictest28112-21apt-get19:30:140
2053199737,52cyclictest15011-21apt-get21:55:130
2053199737,51cyclictest693-21apt-get21:15:150
20531997328,39cyclictest25568-21apt-get23:55:120
2053799726,39cyclictest151rcu_preempt23:20:171
2053199729,50cyclictest0-21swapper/000:35:130
20531997111,47cyclictest0-21swapper/020:45:110
2053199709,48cyclictest0-21swapper/022:50:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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