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2026-08-06 - 12:48
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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 20 highest latencies:
System rack3slot6.osadl.org (updated Thu Aug 06, 2026 00:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1910129521,27sleep00-21swapper/019:06:140
19631998969,13cyclictest503-21snmpd21:25:260
19637998845,14cyclictest503-21snmpd23:35:371
19637998554,9cyclictest26-21ksoftirqd/120:05:401
19637998357,9cyclictest796-21ntpq21:15:291
19637998354,10cyclictest1827-21ntpq00:20:291
19637998254,9cyclictest26-21ksoftirqd/123:05:181
19631998057,10cyclictest14-21ksoftirqd/019:20:130
19637997955,12cyclictest12207-21ntpq20:15:391
19637997953,13cyclictest26-21ksoftirqd/120:56:231
307902760,6chrt30788-21apt-get21:10:111
19631997446,15cyclictest0-21swapper/019:35:120
19631997253,9cyclictest14-21ksoftirqd/022:25:110
19631997123,42cyclictest0-21swapper/023:00:130
19637997035,18cyclictest26-21ksoftirqd/121:33:381
19631997043,14cyclictest5625-21chrt20:00:140
19631997015,48cyclictest0-21swapper/020:30:110
19631997013,51cyclictest0-21swapper/022:20:140
19637996946,16cyclictest26-21ksoftirqd/120:39:261
19631996943,13cyclictest0-21swapper/020:40:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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