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2025-12-07 - 00:05
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 rackcslot3.osadl.org (updated Sat Dec 06, 2025 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81750rcu_preempt1649-21apt-get07:04:561
81720rcu_preempt29557-21needreboot10:55:071
81710rcu_preempt0-21swapper/108:44:591
81700rcu_preempt0-21swapper/109:19:261
81690rcu_preempt7246-21ssh12:13:271
81690rcu_preempt0-21swapper/012:08:120
81690rcu_preempt0-21swapper/010:30:310
81690rcu_preempt0-21swapper/009:35:100
81690rcu_preempt0-21swapper/008:15:010
81680rcu_preempt23282-21diskmemload11:42:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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