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2026-09-01 - 15:48
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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 Tue Sep 01, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
760121280,5chrt7605-21sed10:10:360
689328827,16sleep10-21swapper/107:09:531
7040998211,64cyclictest0-21swapper/009:35:120
168442780,6chrt0-21swapper/110:35:371
7045997540,16cyclictest7032-21cyclictest11:14:141
658627516,50sleep00-21swapper/007:07:070
110712750,7sleep1251rcuc/108:50:231
704099726,57cyclictest23886-21apt-get12:30:140
7040997110,56cyclictest0-21swapper/011:10:140
7045997037,17cyclictest26-21ksoftirqd/109:12:491
7040997038,27cyclictest26665-21telnet11:05:180
7045996933,15cyclictest26-21ksoftirqd/111:00:001
7045996933,15cyclictest26-21ksoftirqd/111:00:001
7045996833,14cyclictest26-21ksoftirqd/109:10:001
7045996833,14cyclictest26-21ksoftirqd/109:10:001
7045996832,14cyclictest26-21ksoftirqd/108:40:011
7045996831,14cyclictest26-21ksoftirqd/109:50:001
7045996830,33cyclictest26-21ksoftirqd/107:38:251
7045996830,14cyclictest26-21ksoftirqd/108:25:001
7040996810,52cyclictest0-21swapper/009:15:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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