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2026-06-06 - 00:45
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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 rack3slot6.osadl.org (updated Fri Jun 05, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
205119910475,20cyclictest14-21ksoftirqd/009:40:120
205119910475,20cyclictest14-21ksoftirqd/009:40:120
205119910071,20cyclictest14-21ksoftirqd/011:40:100
205119910071,19cyclictest14-21ksoftirqd/009:50:100
205119910070,19cyclictest14-21ksoftirqd/011:45:130
205119910068,18cyclictest0-21swapper/007:10:120
20511999968,18cyclictest0-21swapper/010:00:130
229562980,5chrt22955-21/usr/sbin/munin07:15:161
20511999871,15cyclictest14-21ksoftirqd/008:45:140
256462970,6chrt25645-21sed07:20:361
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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