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2025-12-11 - 07:20
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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 Thu Dec 11, 2025 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81750rcu_preempt0-21swapper/122:49:541
81720rcu_preempt26619-21munin-run20:04:401
81710rcu_preempt12724-21cyclictest23:08:301
81700rcu_preempt28089-21ntpq21:40:021
81700rcu_preempt22112-21diskstats21:29:580
81700rcu_preempt0-21swapper/122:34:401
81700rcu_preempt0-21swapper/100:30:051
81690rcu_preempt6494-21ssh23:01:351
81690rcu_preempt0-21swapper/123:54:401
81690rcu_preempt0-21swapper/121:55:051
81690rcu_preempt0-21swapper/119:09:541
81680rcu_preempt29973-1kworker/0:2H00:06:300
81680rcu_preempt0-21swapper/021:40:060
81680rcu_preempt0-21swapper/000:22:430
81670rcu_preempt8419-21df_abs22:04:551
81670rcu_preempt19-21ksoftirqd/122:16:161
81660rcu_preempt6360-21tail20:50:011
81660rcu_preempt6335-21ntp_states22:00:040
81660rcu_preempt26689-21cut23:40:000
81650rcu_preempt10646-21diskmemload22:15:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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