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2025-08-27 - 15:03
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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 rackbslot7.osadl.org (updated Wed Aug 27, 2025 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1288821256,16sleep00-21swapper/019:01:080
13270999845,47cyclictest0-21swapper/223:13:192
13270999845,47cyclictest0-21swapper/223:13:192
1327099983,48cyclictest13589-21apt-get19:03:552
13266999883,9cyclictest0-21swapper/119:53:231
13263999872,20cyclictest14166-21latency_hist20:42:520
13266999635,53cyclictest14933-21idleruntime-cro19:07:511
13263999524,40cyclictest15-21ksoftirqd/019:49:250
13270999349,36cyclictest4982-21sh23:23:032
13270999349,36cyclictest4982-21sh23:23:032
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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