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2026-08-16 - 01:17
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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 Sat Aug 15, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27356991182,76cyclictest4675-21ssh11:45:160
273569911584,25cyclictest27170-21sh12:20:170
273569911584,25cyclictest27170-21sh12:20:170
27364991044,72cyclictest20241-21apt-get08:25:182
27364991044,72cyclictest20241-21apt-get08:25:182
273649910058,13cyclictest181rcu_preempt12:30:162
273649910058,13cyclictest181rcu_preempt12:30:162
27356999869,20cyclictest6777-21latency_hist07:45:020
27356999863,25cyclictest10229-21latency_hist07:55:020
27364999777,15cyclictest27349-21cyclictest10:10:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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