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2026-06-22 - 12:45
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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 Mon Jun 22, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1607324330,49sleep216075-21switchtime18:54:192
1607324330,49sleep216075-21switchtime18:54:192
16659213012,85sleep116678-21munin-plugin-st18:58:351
16659213012,85sleep116678-21munin-plugin-st18:58:351
1531821126,15sleep00-21swapper/018:53:450
1531821126,15sleep00-21swapper/018:53:450
16816991084,41cyclictest28751-21munin-run23:48:350
168229910233,31cyclictest0-21swapper/100:26:211
16822999530,32cyclictest0-21swapper/121:13:411
16822999424,45cyclictest6750-21sh23:10:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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