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2026-09-09 - 11:34
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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 Wed Sep 09, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38369910950,42cyclictest0-21swapper/022:49:540
38369910742,22cyclictest526-21rs:main0
38369910741,22cyclictest8381-21sed00:34:390
38369910739,38cyclictest878-21cpu23:29:520
38369910642,52cyclictest23161-21grep22:20:110
38369910642,52cyclictest23161-21grep22:20:110
38369910542,31cyclictest4647-21sendmail_mailst21:50:120
38369910541,19cyclictest500-21apt-key21:44:390
38369910537,28cyclictest9298-21date21:04:400
38369910537,28cyclictest9298-21date21:04:400
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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