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2026-07-31 - 22:03
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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 Jul 31, 2026 12:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5819589914566,79cyclictest0-21swapper/411:10:174
581958997718,58cyclictest681441-21apt10:10:104
581958997619,38cyclictest597280-21ntpq07:35:224
581958997538,18cyclictest601ktimers/407:12:224
581958997335,38cyclictest747833-21gdbus12:10:004
581958997233,39cyclictest0-21swapper/411:39:404
581958997031,39cyclictest0-21swapper/411:28:324
581958996830,38cyclictest0-21swapper/410:27:054
58196099667,58cyclictest236199-21snmpd07:45:166
581958996627,39cyclictest0-21swapper/408:28:134
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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