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2025-11-18 - 07:06
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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 20 highest latencies:
System rackcslot3.osadl.org (updated Tue Nov 18, 2025 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81720rcu_preempt375-21munin-run19:44:550
81710rcu_preempt3913-21apt-get22:35:100
81700rcu_preempt0-21swapper/000:35:120
81690rcu_preempt0-21swapper/122:55:161
81690rcu_preempt0-21swapper/100:30:201
81690rcu_preempt0-21swapper/000:14:550
81680rcu_preempt0-21swapper/100:05:161
81680rcu_preempt0-21swapper/022:04:130
81670rcu_preempt2235-21snmpd22:55:140
81670rcu_preempt21971-21diskmemload00:00:281
81670rcu_preempt15650-21cron20:44:551
81670rcu_preempt0-21swapper/123:47:151
81670rcu_preempt0-21swapper/123:35:161
81670rcu_preempt0-21swapper/122:36:311
81660rcu_preempt3318-21sh21:34:231
81660rcu_preempt3318-21sh21:34:231
81650rcu_preempt31352-21ntpq21:25:211
81650rcu_preempt26287-21tail19:15:201
81650rcu_preempt25322-21munin-run22:14:561
81650rcu_preempt0-21swapper/123:40:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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