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2026-08-15 - 13:26
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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 rackeslot5.osadl.org (updated Sat Aug 15, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1270099321,30cyclictest11700-21cron21:25:003
1269699320,0cyclictest0-21swapper/221:05:112
1270099310,30cyclictest20137-21cron22:50:003
12693993130,1cyclictest0-21swapper/121:05:111
12700993028,1cyclictest16363-21cron23:50:003
12700993028,1cyclictest15512-21cron20:25:003
12689993028,1cyclictest15523-21awk20:25:010
1268999300,29cyclictest20133-21idleruntime-cro22:50:000
12696992927,2cyclictest0-21swapper/221:35:132
12696992927,1cyclictest8557-21munin-run20:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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