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2026-06-04 - 22:58
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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 10 highest latencies:
System rackbslot7.osadl.org (updated Thu Jun 04, 2026 12:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2860991193,67cyclictest26886-21chrt11:15:073
2849991114,81cyclictest15031-21apt-get11:50:012
2830991103,84cyclictest32059-21apt-get10:30:050
2830991103,84cyclictest32059-21apt-get10:30:050
28419910831,45cyclictest0-21swapper/109:49:381
28419910831,45cyclictest0-21swapper/109:49:381
2660210611,64sleep12701-21munin-run06:59:461
2860991003,41cyclictest0-21swapper/310:10:063
2860991003,41cyclictest0-21swapper/310:10:063
28419910047,47cyclictest0-21swapper/107:55:081
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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