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2026-05-13 - 20:31
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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 rack1slot2.osadl.org (updated Wed May 13, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3069824635,0sleep00-21swapper/007:20:120
3073723929,0sleep30-21swapper/307:20:353
3077623725,0sleep20-21swapper/207:21:062
3067822723,0sleep10-21swapper/107:19:571
309819973,0cyclictest3524-21snmpd11:12:462
309819973,0cyclictest21898-21awk09:07:502
309819973,0cyclictest11128-21awk11:32:512
309819973,0cyclictest10944-21awk08:37:502
309819970,0cyclictest4443-21munin-node09:37:562
309819970,0cyclictest2369-21munin-run08:32:352
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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