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2026-08-14 - 12:21
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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
Characteristics of the 10 highest latencies:
System rackcslot4.osadl.org (updated Fri Aug 14, 2026 00:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19427032278212,51sleep10-21swapper/119:05:231
19434562271199,27sleep00-21swapper/019:06:090
194408099613,6cyclictest1982982-21apt-get20:45:150
194408099582,5cyclictest2082730-21apt-get23:15:140
1944080995814,25cyclictest1944215-21apt-config19:10:040
20574782570,4sleep00-21swapper/022:40:000
194408099573,7cyclictest2039852-21apt-get22:15:140
20525952560,4sleep10-21swapper/122:32:121
194408099562,6cyclictest2068152-21apt-get22:55:130
194408099562,5cyclictest1974703-21apt-get20:25:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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