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2025-12-18 - 13:53
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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 Dec 18, 2025 00:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
718049999836,59cyclictest810940-21ntpq21:50:193
718049998042,19cyclictest815037-21wc22:00:023
71804999668,39cyclictest725393-21ntpq19:20:213
71804999657,38cyclictest0-21swapper/322:10:173
71804999656,19cyclictest0-21swapper/300:15:123
718049996041,0cyclictest0-21swapper/300:39:523
71804999591,39cyclictest744900-21taskset19:55:173
71804999580,39cyclictest766296-21munin-run20:35:013
71804999580,38cyclictest879018-21basename23:50:213
718049995618,19cyclictest720861-21munin-run19:15:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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