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2026-06-11 - 15:55
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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 rackfslot7.osadl.org (updated Thu Jun 11, 2026 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
304924997051,0cyclictest444257-21lpstat11:20:171
304923995512,19cyclictest0-21swapper/012:30:160
30493099540,35cyclictest0-21swapper/707:15:167
304928995214,19cyclictest0-21swapper/511:55:135
304925995214,19cyclictest0-21swapper/212:10:162
304927995111,39cyclictest0-21swapper/408:55:154
304927995010,39cyclictest0-21swapper/410:10:164
304929994931,18cyclictest0-21swapper/610:20:156
304924994948,1cyclictest101750irq/41-eno2-TxRx-208:25:131
30493099488,39cyclictest0-21swapper/711:05:167
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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