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2026-06-12 - 11:55
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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 Fri Jun 12, 2026 00:46:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2958820998548,18cyclictest601ktimers/422:12:014
2958820997838,19cyclictest3007686-21ntpq20:35:214
2958820997012,39cyclictest2998076-21aten2.4_rfpower20:20:124
2958820996951,18cyclictest0-21swapper/423:33:054
2958820996932,18cyclictest236199-21snmpd23:35:384
2958820996867,1cyclictest0-21swapper/400:30:114
2958820996727,0cyclictest0-21swapper/421:04:574
2958820996627,38cyclictest2972839-21aten2.4-expect19:35:134
2958820996626,19cyclictest0-21swapper/400:26:194
2958820996526,39cyclictest792-21rs:main4
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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