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2026-05-22 - 15:13
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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 20 highest latencies:
System rack3slot6.osadl.org (updated Fri May 22, 2026 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2785021030,18chrt26-21ksoftirqd/122:10:011
2789229816,38sleep00-21swapper/019:08:540
116412920,6chrt11639-21grep19:50:330
28181998045,22cyclictest27959-21apt-get22:10:150
28181997823,13cyclictest11377-21apt-get00:25:140
2674227728,26sleep10-21swapper/120:35:221
2818199767,58cyclictest32285-21apt-get19:20:130
28187997341,23cyclictest562-21runrttasks22:10:151
28181997337,25cyclictest19197-21apt-get21:45:120
28181997335,26cyclictest0-21swapper/019:55:140
28181997335,24cyclictest0-21swapper/022:55:140
28181997240,16cyclictest26168-21apt-get22:05:130
28181997233,26cyclictest0-21swapper/023:20:130
28187997138,17cyclictest2829-21apt-get22:30:131
28181997141,16cyclictest7196-21apt-get19:40:110
28181997141,14cyclictest5833-21apt-get00:10:130
28181997138,23cyclictest27713-21apt-get23:40:140
28181997138,23cyclictest27713-21apt-get23:40:140
28181997136,28cyclictest0-21swapper/023:35:120
28181997136,25cyclictest21203-21apt-get20:20:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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