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2026-07-12 - 22:15
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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 Sun Jul 12, 2026 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
710766998364,18cyclictest781ktimers/611:35:156
710766998364,18cyclictest781ktimers/611:35:156
710764997717,39cyclictest1-21systemd10:30:164
710764997537,19cyclictest736973-21ntpq07:55:214
710764997517,39cyclictest825195-21if_err_eno510:35:174
710760997354,19cyclictest0-21swapper/012:00:160
710764997229,40cyclictest733794-21if_err_eno207:50:184
710764997214,39cyclictest878248-21taskset12:11:064
710760997214,19cyclictest0-21swapper/009:40:160
710764997133,38cyclictest0-21swapper/408:29:414
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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