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2026-04-30 - 11:33
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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 Apr 30, 2026 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81760rcu_preempt12795-21/usr/sbin/munin21:50:221
81730rcu_preempt31328-21apt-get22:30:151
81730rcu_preempt21444-21missed_timers19:05:210
81710rcu_preempt5999-21sh21:40:040
81710rcu_preempt3149-21sh22:38:550
81710rcu_preempt19-21ksoftirqd/123:06:321
81700rcu_preempt23008-21ssh23:20:131
81690rcu_preempt19-21ksoftirqd/121:57:251
89950680irq/17-ehci_hcd945-21usb-storage22:17:160
81680rcu_preempt3021-1kworker/0:2H21:15:040
81680rcu_preempt0-21swapper/023:59:100
81680rcu_preempt0-21swapper/023:00:190
81670rcu_preempt25687-21munin-run23:25:020
81670rcu_preempt21598-21munin-run22:10:010
81660rcu_preempt16796-21munin-run22:00:020
81650rcu_preempt0-21swapper/022:33:130
81650rcu_preempt0-21swapper/021:30:360
81640rcu_preempt3021-1kworker/0:2H23:36:310
81640rcu_preempt11124-21ssh21:47:400
81640rcu_preempt0-21swapper/023:26:570
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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