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2026-04-21 - 12:26
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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 20 highest latencies:
System rack3slot6.osadl.org (updated Tue Apr 21, 2026 00:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15872998333,10cyclictest26-21ksoftirqd/123:05:281
15872997627,45cyclictest26-21ksoftirqd/122:30:161
15872997533,13cyclictest26-21ksoftirqd/121:20:001
15870997547,15cyclictest14-21ksoftirqd/000:05:280
15870997446,15cyclictest14-21ksoftirqd/023:15:280
15870997445,23cyclictest14-21ksoftirqd/023:25:170
1550027436,23sleep10-21swapper/119:07:581
1413427431,30sleep00-21swapper/019:05:130
15872997331,14cyclictest26-21ksoftirqd/121:55:001
270722710,5sleep127071-21sshd21:10:151
15872997133,13cyclictest26-21ksoftirqd/120:30:001
15872997133,13cyclictest26-21ksoftirqd/120:30:001
15872997127,14cyclictest26-21ksoftirqd/122:10:011
1587099717,55cyclictest15414-21apt-get23:40:140
15870997145,14cyclictest14-21ksoftirqd/022:24:200
15870997049,15cyclictest14-21ksoftirqd/020:50:450
15872996926,14cyclictest26-21ksoftirqd/121:05:001
15872996926,14cyclictest26-21ksoftirqd/120:00:011
1587099696,53cyclictest4881-21apt-get23:10:150
1587099695,55cyclictest32013-21apt-get22:55:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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