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2026-05-29 - 20:21
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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
Compare latency of primary with shadow system
Characteristics of the 10 highest latencies:
System rackbslot7.osadl.org (updated Fri May 29, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9768999571,16cyclictest1-21systemd09:10:100
9768999468,17cyclictest12543-21latency_hist07:10:140
9768999364,18cyclictest9137-21kworker/u19:0-rpciod10:56:400
9768999215,43cyclictest15-21ksoftirqd/007:01:290
9768999067,15cyclictest21873-21latency_hist07:50:140
9776998824,25cyclictest19630-21seq11:57:282
9776998824,25cyclictest19630-21seq11:57:282
9768998860,9cyclictest181rcu_preempt12:20:490
9768998860,9cyclictest181rcu_preempt12:20:490
976899877,51cyclictest15-21ksoftirqd/008:21:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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